CLEANFILES = $(BUILT_SOURCES)
-libgstvideo_@GST_MAJORMINOR@_la_SOURCES = video.c gstvideosink.c gstvideofilter.c
+libgstvideo_@GST_MAJORMINOR@_la_SOURCES = \
+ video.c gstvideosink.c gstvideofilter.c \
+ gstbasevideoutils.c \
+ gstbasevideocodec.c \
+ gstbasevideodecoder.c \
+ gstbasevideoencoder.c \
+ gstbasevideoparse.c
nodist_libgstvideo_@GST_MAJORMINOR@_la_SOURCES = $(BUILT_SOURCES)
libgstvideo_@GST_MAJORMINOR@includedir = $(includedir)/gstreamer-@GST_MAJORMINOR@/gst/video
-libgstvideo_@GST_MAJORMINOR@include_HEADERS = video.h gstvideosink.h gstvideofilter.h
+libgstvideo_@GST_MAJORMINOR@include_HEADERS = \
+ video.h gstvideosink.h gstvideofilter.h \
+ gstbasevideoutils.h \
+ gstbasevideocodec.h \
+ gstbasevideodecoder.h \
+ gstbasevideoencoder.h \
+ gstbasevideoparse.h
nodist_libgstvideo_@GST_MAJORMINOR@include_HEADERS = $(built_headers)
libgstvideo_@GST_MAJORMINOR@_la_CFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(GST_CFLAGS)
--- /dev/null
+/* Schrodinger
+ * Copyright (C) 2006 David Schleef <ds@schleef.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "gstbasevideocodec.h"
+
+#include <string.h>
+#include <math.h>
+
+GST_DEBUG_CATEGORY (basevideo_debug);
+#define GST_CAT_DEFAULT basevideo_debug
+
+/* GstBaseVideoCodec signals and args */
+enum
+{
+ LAST_SIGNAL
+};
+
+enum
+{
+ ARG_0
+};
+
+static void gst_base_video_codec_finalize (GObject * object);
+
+//static const GstQueryType *gst_base_video_codec_get_query_types (GstPad *pad);
+//static gboolean gst_base_video_codec_src_query (GstPad *pad, GstQuery *query);
+//static gboolean gst_base_video_codec_sink_query (GstPad *pad, GstQuery *query);
+//static gboolean gst_base_video_codec_src_event (GstPad *pad, GstEvent *event);
+//static gboolean gst_base_video_codec_sink_event (GstPad *pad, GstEvent *event);
+static GstStateChangeReturn gst_base_video_codec_change_state (GstElement *
+ element, GstStateChange transition);
+//static GstFlowReturn gst_base_video_codec_push_all (GstBaseVideoCodec *base_video_codec,
+// gboolean at_eos);
+
+
+GST_BOILERPLATE (GstBaseVideoCodec, gst_base_video_codec, GstElement,
+ GST_TYPE_ELEMENT);
+
+static void
+gst_base_video_codec_base_init (gpointer g_class)
+{
+ GST_DEBUG_CATEGORY_INIT (basevideo_debug, "basevideo", 0,
+ "Base Video Classes");
+
+}
+
+static void
+gst_base_video_codec_class_init (GstBaseVideoCodecClass * klass)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *element_class;
+
+ gobject_class = G_OBJECT_CLASS (klass);
+ element_class = GST_ELEMENT_CLASS (klass);
+
+ gobject_class->finalize = gst_base_video_codec_finalize;
+
+ element_class->change_state = gst_base_video_codec_change_state;
+}
+
+static void
+gst_base_video_codec_init (GstBaseVideoCodec * base_video_codec,
+ GstBaseVideoCodecClass * klass)
+{
+ GstPadTemplate *pad_template;
+
+ GST_DEBUG ("gst_base_video_codec_init");
+
+ pad_template =
+ gst_element_class_get_pad_template (GST_ELEMENT_CLASS (klass), "sink");
+ g_return_if_fail (pad_template != NULL);
+
+ base_video_codec->sinkpad = gst_pad_new_from_template (pad_template, "sink");
+ //gst_pad_set_query_function (base_video_codec->sinkpad,
+ // gst_base_video_codec_sink_query);
+ gst_element_add_pad (GST_ELEMENT (base_video_codec),
+ base_video_codec->sinkpad);
+
+ pad_template =
+ gst_element_class_get_pad_template (GST_ELEMENT_CLASS (klass), "src");
+ g_return_if_fail (pad_template != NULL);
+
+ base_video_codec->srcpad = gst_pad_new_from_template (pad_template, "src");
+ gst_element_add_pad (GST_ELEMENT (base_video_codec),
+ base_video_codec->srcpad);
+
+ base_video_codec->input_adapter = gst_adapter_new ();
+ base_video_codec->output_adapter = gst_adapter_new ();
+
+}
+
+static void
+gst_base_video_codec_reset (GstBaseVideoCodec * base_video_codec)
+{
+ GST_DEBUG ("reset");
+
+ base_video_codec->system_frame_number = 0;
+
+ //gst_segment_init (&base_video_codec->state.segment, GST_FORMAT_TIME);
+ gst_adapter_clear (base_video_codec->input_adapter);
+ gst_adapter_clear (base_video_codec->output_adapter);
+
+}
+
+static void
+gst_base_video_codec_finalize (GObject * object)
+{
+ GstBaseVideoCodec *base_video_codec;
+
+ g_return_if_fail (GST_IS_BASE_VIDEO_CODEC (object));
+ base_video_codec = GST_BASE_VIDEO_CODEC (object);
+
+ if (base_video_codec->input_adapter) {
+ g_object_unref (base_video_codec->input_adapter);
+ }
+ if (base_video_codec->output_adapter) {
+ g_object_unref (base_video_codec->output_adapter);
+ }
+
+ G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+#ifdef unused
+static const GstQueryType *
+gst_base_video_codec_get_query_types (GstPad * pad)
+{
+ static const GstQueryType query_types[] = {
+ GST_QUERY_POSITION,
+ GST_QUERY_DURATION,
+ GST_QUERY_CONVERT,
+ 0
+ };
+
+ return query_types;
+}
+#endif
+
+#if 0
+static gboolean
+gst_base_video_codec_src_convert (GstPad * pad,
+ GstFormat src_format, gint64 src_value,
+ GstFormat * dest_format, gint64 * dest_value)
+{
+ gboolean res;
+ GstBaseVideoCodec *dec;
+
+ if (src_format == *dest_format) {
+ *dest_value = src_value;
+ return TRUE;
+ }
+
+ dec = GST_BASE_VIDEO_CODEC (gst_pad_get_parent (pad));
+
+ if (src_format == GST_FORMAT_DEFAULT && *dest_format == GST_FORMAT_TIME) {
+ if (dec->fps_d != 0) {
+ *dest_value = gst_util_uint64_scale (granulepos_to_frame (src_value),
+ dec->fps_d * GST_SECOND, dec->fps_n);
+ res = TRUE;
+ } else {
+ res = FALSE;
+ }
+ } else {
+ GST_WARNING ("unhandled conversion from %d to %d", src_format,
+ *dest_format);
+ res = FALSE;
+ }
+
+ gst_object_unref (dec);
+
+ return res;
+}
+
+static gboolean
+gst_base_video_codec_sink_convert (GstPad * pad,
+ GstFormat src_format, gint64 src_value,
+ GstFormat * dest_format, gint64 * dest_value)
+{
+ gboolean res = TRUE;
+ GstBaseVideoCodec *dec;
+
+ if (src_format == *dest_format) {
+ *dest_value = src_value;
+ return TRUE;
+ }
+
+ dec = GST_BASE_VIDEO_CODEC (gst_pad_get_parent (pad));
+
+ /* FIXME: check if we are in a decoding state */
+
+ switch (src_format) {
+ case GST_FORMAT_DEFAULT:
+ switch (*dest_format) {
+ case GST_FORMAT_TIME:
+ *dest_value = gst_util_uint64_scale (src_value,
+ dec->fps_d * GST_SECOND, dec->fps_n);
+ break;
+ default:
+ res = FALSE;
+ }
+ break;
+ case GST_FORMAT_TIME:
+ switch (*dest_format) {
+ case GST_FORMAT_DEFAULT:
+ {
+ *dest_value = gst_util_uint64_scale (src_value,
+ dec->fps_n, dec->fps_d * GST_SECOND);
+ break;
+ }
+ default:
+ res = FALSE;
+ break;
+ }
+ break;
+ default:
+ res = FALSE;
+ break;
+ }
+
+ gst_object_unref (dec);
+
+ return res;
+}
+#endif
+
+#ifdef unused
+static gboolean
+gst_base_video_codec_src_query (GstPad * pad, GstQuery * query)
+{
+ GstBaseVideoCodec *base_codec;
+ gboolean res = FALSE;
+
+ base_codec = GST_BASE_VIDEO_CODEC (gst_pad_get_parent (pad));
+
+ switch (GST_QUERY_TYPE (query)) {
+ case GST_QUERY_POSITION:
+ {
+ GstFormat format;
+ gint64 time;
+ gint64 value;
+
+ gst_query_parse_position (query, &format, NULL);
+
+ time = gst_util_uint64_scale (base_codec->system_frame_number,
+ base_codec->state.fps_n, base_codec->state.fps_d);
+ time += base_codec->state.segment.time;
+ GST_DEBUG ("query position %lld", time);
+ res = gst_base_video_encoded_video_convert (&base_codec->state,
+ GST_FORMAT_TIME, time, &format, &value);
+ if (!res)
+ goto error;
+
+ gst_query_set_position (query, format, value);
+ break;
+ }
+ case GST_QUERY_DURATION:
+ res = gst_pad_query (GST_PAD_PEER (base_codec->sinkpad), query);
+ if (!res)
+ goto error;
+ break;
+ case GST_QUERY_CONVERT:
+ {
+ GstFormat src_fmt, dest_fmt;
+ gint64 src_val, dest_val;
+
+ GST_DEBUG ("query convert");
+
+ gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
+ res = gst_base_video_encoded_video_convert (&base_codec->state,
+ src_fmt, src_val, &dest_fmt, &dest_val);
+ if (!res)
+ goto error;
+ gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
+ break;
+ }
+ default:
+ res = gst_pad_query_default (pad, query);
+ break;
+ }
+done:
+ gst_object_unref (base_codec);
+
+ return res;
+error:
+ GST_DEBUG_OBJECT (base_codec, "query failed");
+ goto done;
+}
+#endif
+
+#ifdef unused
+static gboolean
+gst_base_video_codec_sink_query (GstPad * pad, GstQuery * query)
+{
+ GstBaseVideoCodec *base_video_codec;
+ gboolean res = FALSE;
+
+ base_video_codec = GST_BASE_VIDEO_CODEC (gst_pad_get_parent (pad));
+
+ switch (GST_QUERY_TYPE (query)) {
+ case GST_QUERY_CONVERT:
+ {
+ GstFormat src_fmt, dest_fmt;
+ gint64 src_val, dest_val;
+
+ gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
+ res = gst_base_video_encoded_video_convert (&base_video_codec->state,
+ src_fmt, src_val, &dest_fmt, &dest_val);
+ if (!res)
+ goto error;
+ gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
+ break;
+ }
+ default:
+ res = gst_pad_query_default (pad, query);
+ break;
+ }
+done:
+ gst_object_unref (base_video_codec);
+
+ return res;
+error:
+ GST_DEBUG_OBJECT (base_video_codec, "query failed");
+ goto done;
+}
+#endif
+
+#ifdef unused
+static gboolean
+gst_base_video_codec_src_event (GstPad * pad, GstEvent * event)
+{
+ GstBaseVideoCodec *base_video_codec;
+ gboolean res = FALSE;
+
+ base_video_codec = GST_BASE_VIDEO_CODEC (gst_pad_get_parent (pad));
+
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_SEEK:
+ {
+ GstFormat format, tformat;
+ gdouble rate;
+ GstEvent *real_seek;
+ GstSeekFlags flags;
+ GstSeekType cur_type, stop_type;
+ gint64 cur, stop;
+ gint64 tcur, tstop;
+
+ gst_event_parse_seek (event, &rate, &format, &flags, &cur_type,
+ &cur, &stop_type, &stop);
+ gst_event_unref (event);
+
+ tformat = GST_FORMAT_TIME;
+ res = gst_base_video_encoded_video_convert (&base_video_codec->state,
+ format, cur, &tformat, &tcur);
+ if (!res)
+ goto convert_error;
+ res = gst_base_video_encoded_video_convert (&base_video_codec->state,
+ format, stop, &tformat, &tstop);
+ if (!res)
+ goto convert_error;
+
+ real_seek = gst_event_new_seek (rate, GST_FORMAT_TIME,
+ flags, cur_type, tcur, stop_type, tstop);
+
+ res = gst_pad_push_event (base_video_codec->sinkpad, real_seek);
+
+ break;
+ }
+#if 0
+ case GST_EVENT_QOS:
+ {
+ gdouble proportion;
+ GstClockTimeDiff diff;
+ GstClockTime timestamp;
+
+ gst_event_parse_qos (event, &proportion, &diff, ×tamp);
+
+ GST_OBJECT_LOCK (base_video_codec);
+ base_video_codec->proportion = proportion;
+ base_video_codec->earliest_time = timestamp + diff;
+ GST_OBJECT_UNLOCK (base_video_codec);
+
+ GST_DEBUG_OBJECT (base_video_codec,
+ "got QoS %" GST_TIME_FORMAT ", %" G_GINT64_FORMAT,
+ GST_TIME_ARGS (timestamp), diff);
+
+ res = gst_pad_push_event (base_video_codec->sinkpad, event);
+ break;
+ }
+#endif
+ default:
+ res = gst_pad_push_event (base_video_codec->sinkpad, event);
+ break;
+ }
+done:
+ gst_object_unref (base_video_codec);
+ return res;
+
+convert_error:
+ GST_DEBUG_OBJECT (base_video_codec, "could not convert format");
+ goto done;
+}
+#endif
+
+#ifdef unused
+static gboolean
+gst_base_video_codec_sink_event (GstPad * pad, GstEvent * event)
+{
+ GstBaseVideoCodec *base_video_codec;
+ gboolean ret = FALSE;
+
+ base_video_codec = GST_BASE_VIDEO_CODEC (gst_pad_get_parent (pad));
+
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_FLUSH_START:
+ ret = gst_pad_push_event (base_video_codec->srcpad, event);
+ break;
+ case GST_EVENT_FLUSH_STOP:
+ gst_base_video_codec_reset (base_video_codec);
+ ret = gst_pad_push_event (base_video_codec->srcpad, event);
+ break;
+ case GST_EVENT_EOS:
+ if (gst_base_video_codec_push_all (base_video_codec,
+ FALSE) == GST_FLOW_ERROR) {
+ gst_event_unref (event);
+ return FALSE;
+ }
+
+ ret = gst_pad_push_event (base_video_codec->srcpad, event);
+ break;
+ case GST_EVENT_NEWSEGMENT:
+ {
+ gboolean update;
+ GstFormat format;
+ gdouble rate;
+ gint64 start, stop, time;
+
+ gst_event_parse_new_segment (event, &update, &rate, &format, &start,
+ &stop, &time);
+
+ if (format != GST_FORMAT_TIME)
+ goto newseg_wrong_format;
+
+ if (rate <= 0.0)
+ goto newseg_wrong_rate;
+
+ GST_DEBUG ("newsegment %lld %lld", start, time);
+ gst_segment_set_newsegment (&base_video_codec->state.segment, update,
+ rate, format, start, stop, time);
+
+ ret = gst_pad_push_event (base_video_codec->srcpad, event);
+ break;
+ }
+ default:
+ ret = gst_pad_push_event (base_video_codec->srcpad, event);
+ break;
+ }
+done:
+ gst_object_unref (base_video_codec);
+ return ret;
+
+newseg_wrong_format:
+ GST_DEBUG_OBJECT (base_video_codec, "received non TIME newsegment");
+ gst_event_unref (event);
+ goto done;
+
+newseg_wrong_rate:
+ GST_DEBUG_OBJECT (base_video_codec, "negative rates not supported");
+ gst_event_unref (event);
+ goto done;
+}
+#endif
+
+
+static GstStateChangeReturn
+gst_base_video_codec_change_state (GstElement * element,
+ GstStateChange transition)
+{
+ GstBaseVideoCodec *base_video_codec = GST_BASE_VIDEO_CODEC (element);
+ GstStateChangeReturn ret;
+
+ switch (transition) {
+ case GST_STATE_CHANGE_NULL_TO_READY:
+ break;
+ case GST_STATE_CHANGE_READY_TO_PAUSED:
+ gst_base_video_codec_reset (base_video_codec);
+ break;
+ case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
+ break;
+ default:
+ break;
+ }
+
+ ret = parent_class->change_state (element, transition);
+
+ switch (transition) {
+ case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
+ break;
+ case GST_STATE_CHANGE_PAUSED_TO_READY:
+ gst_base_video_codec_reset (base_video_codec);
+ break;
+ case GST_STATE_CHANGE_READY_TO_NULL:
+ break;
+ default:
+ break;
+ }
+
+ return ret;
+}
+
+#if 0
+guint64
+gst_base_video_codec_get_timestamp (GstBaseVideoCodec * base_video_codec,
+ int picture_number)
+{
+ if (picture_number < 0) {
+ return base_video_codec->timestamp_offset -
+ (gint64) gst_util_uint64_scale (-picture_number,
+ base_video_codec->state.fps_d * GST_SECOND,
+ base_video_codec->state.fps_n);
+ } else {
+ return base_video_codec->timestamp_offset +
+ gst_util_uint64_scale (picture_number,
+ base_video_codec->state.fps_d * GST_SECOND,
+ base_video_codec->state.fps_n);
+ }
+}
+#endif
+
+GstVideoFrame *
+gst_base_video_codec_new_frame (GstBaseVideoCodec * base_video_codec)
+{
+ GstVideoFrame *frame;
+
+ frame = g_malloc0 (sizeof (GstVideoFrame));
+
+ frame->system_frame_number = base_video_codec->system_frame_number;
+ base_video_codec->system_frame_number++;
+
+ return frame;
+}
+
+void
+gst_base_video_codec_free_frame (GstVideoFrame * frame)
+{
+ if (frame->sink_buffer) {
+ gst_buffer_unref (frame->sink_buffer);
+ }
+#if 0
+ if (frame->src_buffer) {
+ gst_buffer_unref (frame->src_buffer);
+ }
+#endif
+
+ g_free (frame);
+}
--- /dev/null
+/* GStreamer
+ * Copyright (C) 2008 David Schleef <ds@schleef.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef _GST_BASE_VIDEO_CODEC_H_
+#define _GST_BASE_VIDEO_CODEC_H_
+
+#include <gst/gst.h>
+#include <gst/video/gstbasevideoutils.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_BASE_VIDEO_CODEC \
+ (gst_base_video_codec_get_type())
+#define GST_BASE_VIDEO_CODEC(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_BASE_VIDEO_CODEC,GstBaseVideoCodec))
+#define GST_BASE_VIDEO_CODEC_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_BASE_VIDEO_CODEC,GstBaseVideoCodecClass))
+#define GST_BASE_VIDEO_CODEC_GET_CLASS(obj) \
+ (G_TYPE_INSTANCE_GET_CLASS((obj),GST_TYPE_BASE_VIDEO_CODEC,GstBaseVideoCodecClass))
+#define GST_IS_BASE_VIDEO_CODEC(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_BASE_VIDEO_CODEC))
+#define GST_IS_BASE_VIDEO_CODEC_CLASS(obj) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_BASE_VIDEO_CODEC))
+
+/**
+ * GST_BASE_VIDEO_CODEC_SINK_NAME:
+ *
+ * The name of the templates for the sink pad.
+ */
+#define GST_BASE_VIDEO_CODEC_SINK_NAME "sink"
+/**
+ * GST_BASE_VIDEO_CODEC_SRC_NAME:
+ *
+ * The name of the templates for the source pad.
+ */
+#define GST_BASE_VIDEO_CODEC_SRC_NAME "src"
+
+/**
+ * GST_BASE_VIDEO_CODEC_SRC_PAD:
+ * @obj: base video codec instance
+ *
+ * Gives the pointer to the source #GstPad object of the element.
+ */
+#define GST_BASE_VIDEO_CODEC_SRC_PAD(obj) (((GstBaseVideoCodec *) (obj))->srcpad)
+
+/**
+ * GST_BASE_VIDEO_CODEC_SINK_PAD:
+ * @obj: base video codec instance
+ *
+ * Gives the pointer to the sink #GstPad object of the element.
+ */
+#define GST_BASE_VIDEO_CODEC_SINK_PAD(obj) (((GstBaseVideoCodec *) (obj))->sinkpad)
+
+/**
+ * GST_BASE_VIDEO_CODEC_FLOW_NEED_DATA:
+ *
+ */
+#define GST_BASE_VIDEO_CODEC_FLOW_NEED_DATA GST_FLOW_CUSTOM_SUCCESS
+
+typedef struct _GstBaseVideoCodec GstBaseVideoCodec;
+typedef struct _GstBaseVideoCodecClass GstBaseVideoCodecClass;
+
+struct _GstBaseVideoCodec
+{
+ GstElement element;
+
+ /*< private >*/
+ GstPad *sinkpad;
+ GstPad *srcpad;
+ GstAdapter *input_adapter;
+ GstAdapter *output_adapter;
+
+#if 0
+ /* FIXME need to move from subclasses */
+ GstVideoState state;
+#endif
+
+ //int reorder_depth;
+
+ //gboolean have_sync;
+ //gboolean discont;
+ //gboolean started;
+
+ //GstVideoFrame *current_frame;
+ //int distance_from_sync;
+
+ //gboolean sink_clipping;
+
+ //guint64 presentation_frame_number;
+ guint64 system_frame_number;
+
+ //GstCaps *caps;
+ //gboolean set_output_caps;
+
+ //GstClockTime buffer_timestamp;
+
+ GstClockTime timestamp_offset;
+};
+
+struct _GstBaseVideoCodecClass
+{
+ GstElementClass element_class;
+
+ gboolean (*start) (GstBaseVideoCodec *codec);
+ gboolean (*stop) (GstBaseVideoCodec *codec);
+ gboolean (*reset) (GstBaseVideoCodec *codec);
+ GstFlowReturn (*parse_data) (GstBaseVideoCodec *codec, gboolean at_eos);
+ int (*scan_for_sync) (GstAdapter *adapter, gboolean at_eos,
+ int offset, int n);
+ GstFlowReturn (*shape_output) (GstBaseVideoCodec *codec, GstVideoFrame *frame);
+ GstCaps *(*get_caps) (GstBaseVideoCodec *codec);
+
+};
+
+GType gst_base_video_codec_get_type (void);
+
+#if 0
+guint64 gst_base_video_codec_get_timestamp (GstBaseVideoCodec *codec,
+ int picture_number);
+#endif
+
+GstVideoFrame * gst_base_video_codec_new_frame (GstBaseVideoCodec *base_video_codec);
+void gst_base_video_codec_free_frame (GstVideoFrame *frame);
+
+
+G_END_DECLS
+
+#endif
+
--- /dev/null
+/* GStreamer
+ * Copyright (C) 2008 David Schleef <ds@schleef.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "gstbasevideodecoder.h"
+
+#include <string.h>
+
+GST_DEBUG_CATEGORY_EXTERN (basevideo_debug);
+#define GST_CAT_DEFAULT basevideo_debug
+
+static void gst_base_video_decoder_finalize (GObject * object);
+
+static gboolean gst_base_video_decoder_sink_setcaps (GstPad * pad,
+ GstCaps * caps);
+static gboolean gst_base_video_decoder_sink_event (GstPad * pad,
+ GstEvent * event);
+static gboolean gst_base_video_decoder_src_event (GstPad * pad,
+ GstEvent * event);
+static GstFlowReturn gst_base_video_decoder_chain (GstPad * pad,
+ GstBuffer * buf);
+static gboolean gst_base_video_decoder_sink_query (GstPad * pad,
+ GstQuery * query);
+//static GstFlowReturn gst_base_video_decoder_process (GstBaseVideoDecoder *base_video_decoder);
+static GstStateChangeReturn gst_base_video_decoder_change_state (GstElement *
+ element, GstStateChange transition);
+static const GstQueryType *gst_base_video_decoder_get_query_types (GstPad *
+ pad);
+static gboolean gst_base_video_decoder_src_query (GstPad * pad,
+ GstQuery * query);
+static gboolean gst_base_video_decoder_src_convert (GstPad * pad,
+ GstFormat src_format, gint64 src_value, GstFormat * dest_format,
+ gint64 * dest_value);
+static void gst_base_video_decoder_reset (GstBaseVideoDecoder *
+ base_video_decoder);
+
+static guint64
+gst_base_video_decoder_get_timestamp (GstBaseVideoDecoder * base_video_decoder,
+ int picture_number);
+static guint64
+gst_base_video_decoder_get_field_timestamp (GstBaseVideoDecoder *
+ base_video_decoder, int field_offset);
+static GstVideoFrame *gst_base_video_decoder_new_frame (GstBaseVideoDecoder *
+ base_video_decoder);
+static void gst_base_video_decoder_free_frame (GstVideoFrame * frame);
+
+GST_BOILERPLATE (GstBaseVideoDecoder, gst_base_video_decoder,
+ GstBaseVideoCodec, GST_TYPE_BASE_VIDEO_CODEC);
+
+static void
+gst_base_video_decoder_base_init (gpointer g_class)
+{
+
+}
+
+static void
+gst_base_video_decoder_class_init (GstBaseVideoDecoderClass * klass)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *gstelement_class;
+
+ gobject_class = G_OBJECT_CLASS (klass);
+ gstelement_class = GST_ELEMENT_CLASS (klass);
+
+ gobject_class->finalize = gst_base_video_decoder_finalize;
+
+ gstelement_class->change_state = gst_base_video_decoder_change_state;
+
+ parent_class = g_type_class_peek_parent (klass);
+}
+
+static void
+gst_base_video_decoder_init (GstBaseVideoDecoder * base_video_decoder,
+ GstBaseVideoDecoderClass * klass)
+{
+ GstPad *pad;
+
+ GST_DEBUG ("gst_base_video_decoder_init");
+
+ pad = GST_BASE_VIDEO_CODEC_SINK_PAD (base_video_decoder);
+
+ gst_pad_set_chain_function (pad, gst_base_video_decoder_chain);
+ gst_pad_set_event_function (pad, gst_base_video_decoder_sink_event);
+ gst_pad_set_setcaps_function (pad, gst_base_video_decoder_sink_setcaps);
+ gst_pad_set_query_function (pad, gst_base_video_decoder_sink_query);
+
+ pad = GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_decoder);
+
+ gst_pad_set_event_function (pad, gst_base_video_decoder_src_event);
+ gst_pad_set_query_type_function (pad, gst_base_video_decoder_get_query_types);
+ gst_pad_set_query_function (pad, gst_base_video_decoder_src_query);
+
+ base_video_decoder->input_adapter = gst_adapter_new ();
+ base_video_decoder->output_adapter = gst_adapter_new ();
+
+ gst_segment_init (&base_video_decoder->state.segment, GST_FORMAT_TIME);
+ gst_base_video_decoder_reset (base_video_decoder);
+
+ base_video_decoder->current_frame =
+ gst_base_video_decoder_new_frame (base_video_decoder);
+
+ base_video_decoder->sink_clipping = TRUE;
+}
+
+static gboolean
+gst_base_video_decoder_sink_setcaps (GstPad * pad, GstCaps * caps)
+{
+ GstBaseVideoDecoder *base_video_decoder;
+ GstBaseVideoDecoderClass *base_video_decoder_class;
+ GstStructure *structure;
+ const GValue *codec_data;
+
+ base_video_decoder = GST_BASE_VIDEO_DECODER (gst_pad_get_parent (pad));
+ base_video_decoder_class =
+ GST_BASE_VIDEO_DECODER_GET_CLASS (base_video_decoder);
+
+ GST_DEBUG ("setcaps %" GST_PTR_FORMAT, caps);
+
+ if (base_video_decoder->codec_data) {
+ gst_buffer_unref (base_video_decoder->codec_data);
+ base_video_decoder->codec_data = NULL;
+ }
+
+ structure = gst_caps_get_structure (caps, 0);
+
+ codec_data = gst_structure_get_value (structure, "codec_data");
+ if (codec_data && G_VALUE_TYPE (codec_data) == GST_TYPE_BUFFER) {
+ base_video_decoder->codec_data = gst_value_get_buffer (codec_data);
+ }
+
+ if (base_video_decoder_class->start) {
+ base_video_decoder_class->start (base_video_decoder);
+ }
+
+ g_object_unref (base_video_decoder);
+
+ return TRUE;
+}
+
+static void
+gst_base_video_decoder_finalize (GObject * object)
+{
+ GstBaseVideoDecoder *base_video_decoder;
+ GstBaseVideoDecoderClass *base_video_decoder_class;
+
+ g_return_if_fail (GST_IS_BASE_VIDEO_DECODER (object));
+ base_video_decoder = GST_BASE_VIDEO_DECODER (object);
+ base_video_decoder_class = GST_BASE_VIDEO_DECODER_GET_CLASS (object);
+
+ gst_base_video_decoder_reset (base_video_decoder);
+
+ GST_DEBUG_OBJECT (object, "finalize");
+
+ G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static gboolean
+gst_base_video_decoder_sink_event (GstPad * pad, GstEvent * event)
+{
+ GstBaseVideoDecoder *base_video_decoder;
+ GstBaseVideoDecoderClass *base_video_decoder_class;
+ gboolean ret = FALSE;
+
+ base_video_decoder = GST_BASE_VIDEO_DECODER (gst_pad_get_parent (pad));
+ base_video_decoder_class =
+ GST_BASE_VIDEO_DECODER_GET_CLASS (base_video_decoder);
+
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_EOS:
+ {
+ GstVideoFrame *frame;
+
+ frame = g_malloc0 (sizeof (GstVideoFrame));
+ frame->presentation_frame_number =
+ base_video_decoder->presentation_frame_number;
+ frame->presentation_duration = 0;
+ //frame->presentation_duration = 0;
+ base_video_decoder->presentation_frame_number++;
+
+ base_video_decoder->frames =
+ g_list_append (base_video_decoder->frames, frame);
+ if (base_video_decoder_class->finish) {
+ base_video_decoder_class->finish (base_video_decoder, frame);
+ }
+
+ ret =
+ gst_pad_push_event (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_decoder),
+ event);
+ }
+ break;
+ case GST_EVENT_NEWSEGMENT:
+ {
+ gboolean update;
+ double rate;
+ double applied_rate;
+ GstFormat format;
+ gint64 start;
+ gint64 stop;
+ gint64 position;
+
+ gst_event_parse_new_segment_full (event, &update, &rate,
+ &applied_rate, &format, &start, &stop, &position);
+
+ if (format != GST_FORMAT_TIME)
+ goto newseg_wrong_format;
+
+ GST_DEBUG ("new segment %lld %lld", start, position);
+
+ //gst_base_video_decoder_reset (base_video_decoder);
+
+ //base_video_decoder->timestamp_offset = start;
+
+ gst_segment_set_newsegment_full (&base_video_decoder->state.segment,
+ update, rate, applied_rate, format, start, stop, position);
+
+ ret =
+ gst_pad_push_event (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_decoder),
+ event);
+ }
+ break;
+ default:
+ /* FIXME this changes the order of events */
+ ret =
+ gst_pad_push_event (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_decoder),
+ event);
+ break;
+ }
+
+done:
+ gst_object_unref (base_video_decoder);
+ return ret;
+
+newseg_wrong_format:
+ {
+ GST_DEBUG_OBJECT (base_video_decoder, "received non TIME newsegment");
+ gst_event_unref (event);
+ goto done;
+ }
+}
+
+static gboolean
+gst_base_video_decoder_src_event (GstPad * pad, GstEvent * event)
+{
+ GstBaseVideoDecoder *base_video_decoder;
+ gboolean res = FALSE;
+
+ base_video_decoder = GST_BASE_VIDEO_DECODER (gst_pad_get_parent (pad));
+
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_SEEK:
+ {
+ GstFormat format, tformat;
+ gdouble rate;
+ GstEvent *real_seek;
+ GstSeekFlags flags;
+ GstSeekType cur_type, stop_type;
+ gint64 cur, stop;
+ gint64 tcur, tstop;
+
+ gst_event_parse_seek (event, &rate, &format, &flags, &cur_type,
+ &cur, &stop_type, &stop);
+ gst_event_unref (event);
+
+ tformat = GST_FORMAT_TIME;
+ res =
+ gst_base_video_decoder_src_convert (pad, format, cur, &tformat,
+ &tcur);
+ if (!res)
+ goto convert_error;
+ res =
+ gst_base_video_decoder_src_convert (pad, format, stop, &tformat,
+ &tstop);
+ if (!res)
+ goto convert_error;
+
+ real_seek = gst_event_new_seek (rate, GST_FORMAT_TIME,
+ flags, cur_type, tcur, stop_type, tstop);
+
+ res =
+ gst_pad_push_event (GST_BASE_VIDEO_CODEC_SINK_PAD
+ (base_video_decoder), real_seek);
+
+ break;
+ }
+ case GST_EVENT_QOS:
+ {
+ gdouble proportion;
+ GstClockTimeDiff diff;
+ GstClockTime timestamp;
+
+ gst_event_parse_qos (event, &proportion, &diff, ×tamp);
+
+ GST_OBJECT_LOCK (base_video_decoder);
+ base_video_decoder->proportion = proportion;
+ base_video_decoder->earliest_time = timestamp + diff;
+ GST_OBJECT_UNLOCK (base_video_decoder);
+
+ GST_DEBUG_OBJECT (base_video_decoder,
+ "got QoS %" GST_TIME_FORMAT ", %" G_GINT64_FORMAT ", %g",
+ GST_TIME_ARGS (timestamp), diff, proportion);
+
+ res =
+ gst_pad_push_event (GST_BASE_VIDEO_CODEC_SINK_PAD
+ (base_video_decoder), event);
+ break;
+ }
+ default:
+ res =
+ gst_pad_push_event (GST_BASE_VIDEO_CODEC_SINK_PAD
+ (base_video_decoder), event);
+ break;
+ }
+done:
+ gst_object_unref (base_video_decoder);
+ return res;
+
+convert_error:
+ GST_DEBUG_OBJECT (base_video_decoder, "could not convert format");
+ goto done;
+}
+
+
+#if 0
+static gboolean
+gst_base_video_decoder_sink_convert (GstPad * pad,
+ GstFormat src_format, gint64 src_value,
+ GstFormat * dest_format, gint64 * dest_value)
+{
+ gboolean res = TRUE;
+ GstBaseVideoDecoder *enc;
+
+ if (src_format == *dest_format) {
+ *dest_value = src_value;
+ return TRUE;
+ }
+
+ enc = GST_BASE_VIDEO_DECODER (gst_pad_get_parent (pad));
+
+ /* FIXME: check if we are in a decoding state */
+
+ switch (src_format) {
+ case GST_FORMAT_BYTES:
+ switch (*dest_format) {
+#if 0
+ case GST_FORMAT_DEFAULT:
+ *dest_value = gst_util_uint64_scale_int (src_value, 1,
+ enc->bytes_per_picture);
+ break;
+#endif
+ case GST_FORMAT_TIME:
+ /* seems like a rather silly conversion, implement me if you like */
+ default:
+ res = FALSE;
+ }
+ break;
+ case GST_FORMAT_DEFAULT:
+ switch (*dest_format) {
+ case GST_FORMAT_TIME:
+ *dest_value = gst_util_uint64_scale (src_value,
+ GST_SECOND * enc->fps_d, enc->fps_n);
+ break;
+#if 0
+ case GST_FORMAT_BYTES:
+ *dest_value = gst_util_uint64_scale_int (src_value,
+ enc->bytes_per_picture, 1);
+ break;
+#endif
+ default:
+ res = FALSE;
+ }
+ break;
+ default:
+ res = FALSE;
+ break;
+ }
+}
+#endif
+
+static gboolean
+gst_base_video_decoder_src_convert (GstPad * pad,
+ GstFormat src_format, gint64 src_value,
+ GstFormat * dest_format, gint64 * dest_value)
+{
+ gboolean res = TRUE;
+ GstBaseVideoDecoder *enc;
+
+ if (src_format == *dest_format) {
+ *dest_value = src_value;
+ return TRUE;
+ }
+
+ enc = GST_BASE_VIDEO_DECODER (gst_pad_get_parent (pad));
+
+ /* FIXME: check if we are in a encoding state */
+
+ GST_DEBUG ("src convert");
+ switch (src_format) {
+#if 0
+ case GST_FORMAT_DEFAULT:
+ switch (*dest_format) {
+ case GST_FORMAT_TIME:
+ *dest_value = gst_util_uint64_scale (granulepos_to_frame (src_value),
+ enc->fps_d * GST_SECOND, enc->fps_n);
+ break;
+ default:
+ res = FALSE;
+ }
+ break;
+ case GST_FORMAT_TIME:
+ switch (*dest_format) {
+ case GST_FORMAT_DEFAULT:
+ {
+ *dest_value = gst_util_uint64_scale (src_value,
+ enc->fps_n, enc->fps_d * GST_SECOND);
+ break;
+ }
+ default:
+ res = FALSE;
+ break;
+ }
+ break;
+#endif
+ default:
+ res = FALSE;
+ break;
+ }
+
+ gst_object_unref (enc);
+
+ return res;
+}
+
+static const GstQueryType *
+gst_base_video_decoder_get_query_types (GstPad * pad)
+{
+ static const GstQueryType query_types[] = {
+ //GST_QUERY_POSITION,
+ //GST_QUERY_DURATION,
+ GST_QUERY_CONVERT,
+ 0
+ };
+
+ return query_types;
+}
+
+static gboolean
+gst_base_video_decoder_src_query (GstPad * pad, GstQuery * query)
+{
+ GstBaseVideoDecoder *enc;
+ gboolean res;
+
+ enc = GST_BASE_VIDEO_DECODER (gst_pad_get_parent (pad));
+
+ switch GST_QUERY_TYPE
+ (query) {
+ case GST_QUERY_CONVERT:
+ {
+ GstFormat src_fmt, dest_fmt;
+ gint64 src_val, dest_val;
+
+ gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
+ res =
+ gst_base_video_decoder_src_convert (pad, src_fmt, src_val, &dest_fmt,
+ &dest_val);
+ if (!res)
+ goto error;
+ gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
+ break;
+ }
+ default:
+ res = gst_pad_query_default (pad, query);
+ }
+ gst_object_unref (enc);
+ return res;
+
+error:
+ GST_DEBUG_OBJECT (enc, "query failed");
+ gst_object_unref (enc);
+ return res;
+}
+
+static gboolean
+gst_base_video_decoder_sink_query (GstPad * pad, GstQuery * query)
+{
+ GstBaseVideoDecoder *base_video_decoder;
+ gboolean res = FALSE;
+
+ base_video_decoder = GST_BASE_VIDEO_DECODER (gst_pad_get_parent (pad));
+
+ GST_DEBUG_OBJECT (base_video_decoder, "sink query fps=%d/%d",
+ base_video_decoder->state.fps_n, base_video_decoder->state.fps_d);
+ switch (GST_QUERY_TYPE (query)) {
+ case GST_QUERY_CONVERT:
+ {
+ GstFormat src_fmt, dest_fmt;
+ gint64 src_val, dest_val;
+
+ gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
+ res = gst_base_video_rawvideo_convert (&base_video_decoder->state,
+ src_fmt, src_val, &dest_fmt, &dest_val);
+ if (!res)
+ goto error;
+ gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
+ break;
+ }
+ default:
+ res = gst_pad_query_default (pad, query);
+ break;
+ }
+done:
+ gst_object_unref (base_video_decoder);
+
+ return res;
+error:
+ GST_DEBUG_OBJECT (base_video_decoder, "query failed");
+ goto done;
+}
+
+
+#if 0
+static gboolean
+gst_pad_is_negotiated (GstPad * pad)
+{
+ GstCaps *caps;
+
+ g_return_val_if_fail (pad != NULL, FALSE);
+
+ caps = gst_pad_get_negotiated_caps (pad);
+ if (caps) {
+ gst_caps_unref (caps);
+ return TRUE;
+ }
+
+ return FALSE;
+}
+#endif
+
+static void
+gst_base_video_decoder_reset (GstBaseVideoDecoder * base_video_decoder)
+{
+ GstBaseVideoDecoderClass *base_video_decoder_class;
+ GList *g;
+
+ base_video_decoder_class =
+ GST_BASE_VIDEO_DECODER_GET_CLASS (base_video_decoder);
+
+ GST_DEBUG ("reset");
+
+ base_video_decoder->started = FALSE;
+
+ base_video_decoder->discont = TRUE;
+ base_video_decoder->have_sync = FALSE;
+
+ base_video_decoder->timestamp_offset = GST_CLOCK_TIME_NONE;
+ base_video_decoder->system_frame_number = 0;
+ base_video_decoder->presentation_frame_number = 0;
+ base_video_decoder->last_sink_timestamp = GST_CLOCK_TIME_NONE;
+ base_video_decoder->last_sink_offset_end = GST_CLOCK_TIME_NONE;
+ base_video_decoder->base_picture_number = 0;
+ base_video_decoder->last_timestamp = GST_CLOCK_TIME_NONE;
+
+ base_video_decoder->offset = 0;
+
+ if (base_video_decoder->caps) {
+ gst_caps_unref (base_video_decoder->caps);
+ base_video_decoder->caps = NULL;
+ }
+ //gst_segment_init (&base_video_decoder->state.segment, GST_FORMAT_TIME);
+
+ if (base_video_decoder->current_frame) {
+ gst_base_video_decoder_free_frame (base_video_decoder->current_frame);
+ base_video_decoder->current_frame = NULL;
+ }
+
+ base_video_decoder->have_src_caps = FALSE;
+
+ for (g = g_list_first (base_video_decoder->frames); g; g = g_list_next (g)) {
+ GstVideoFrame *frame = g->data;
+ gst_base_video_decoder_free_frame (frame);
+ }
+ g_list_free (base_video_decoder->frames);
+ base_video_decoder->frames = NULL;
+
+ if (base_video_decoder_class->reset) {
+ base_video_decoder_class->reset (base_video_decoder);
+ }
+}
+
+static GstFlowReturn
+gst_base_video_decoder_chain (GstPad * pad, GstBuffer * buf)
+{
+ GstBaseVideoDecoder *base_video_decoder;
+ GstBaseVideoDecoderClass *klass;
+ GstBuffer *buffer;
+ GstFlowReturn ret;
+
+ GST_DEBUG ("chain %lld", GST_BUFFER_TIMESTAMP (buf));
+
+#if 0
+ /* requiring the pad to be negotiated makes it impossible to use
+ * oggdemux or filesrc ! decoder */
+ if (!gst_pad_is_negotiated (pad)) {
+ GST_DEBUG ("not negotiated");
+ return GST_FLOW_NOT_NEGOTIATED;
+ }
+#endif
+
+ base_video_decoder = GST_BASE_VIDEO_DECODER (gst_pad_get_parent (pad));
+ klass = GST_BASE_VIDEO_DECODER_GET_CLASS (base_video_decoder);
+
+ GST_DEBUG_OBJECT (base_video_decoder, "chain");
+
+ if (G_UNLIKELY (GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DISCONT))) {
+ GST_DEBUG_OBJECT (base_video_decoder, "received DISCONT buffer");
+ if (base_video_decoder->started) {
+ gst_base_video_decoder_reset (base_video_decoder);
+ }
+ }
+
+ if (!base_video_decoder->started) {
+ klass->start (base_video_decoder);
+ base_video_decoder->started = TRUE;
+ }
+
+ if (GST_BUFFER_TIMESTAMP (buf) != GST_CLOCK_TIME_NONE) {
+ GST_DEBUG ("timestamp %lld offset %lld", GST_BUFFER_TIMESTAMP (buf),
+ base_video_decoder->offset);
+ base_video_decoder->last_sink_timestamp = GST_BUFFER_TIMESTAMP (buf);
+ }
+ if (GST_BUFFER_OFFSET_END (buf) != -1) {
+ GST_DEBUG ("gp %lld", GST_BUFFER_OFFSET_END (buf));
+ base_video_decoder->last_sink_offset_end = GST_BUFFER_OFFSET_END (buf);
+ }
+ base_video_decoder->offset += GST_BUFFER_SIZE (buf);
+
+#if 0
+ if (base_video_decoder->timestamp_offset == GST_CLOCK_TIME_NONE &&
+ GST_BUFFER_TIMESTAMP (buf) != GST_CLOCK_TIME_NONE) {
+ GST_DEBUG ("got new offset %lld", GST_BUFFER_TIMESTAMP (buf));
+ base_video_decoder->timestamp_offset = GST_BUFFER_TIMESTAMP (buf);
+ }
+#endif
+
+ if (base_video_decoder->current_frame == NULL) {
+ base_video_decoder->current_frame =
+ gst_base_video_decoder_new_frame (base_video_decoder);
+ }
+
+ gst_adapter_push (base_video_decoder->input_adapter, buf);
+
+ if (!base_video_decoder->have_sync) {
+ int n, m;
+
+ GST_DEBUG ("no sync, scanning");
+
+ n = gst_adapter_available (base_video_decoder->input_adapter);
+ m = klass->scan_for_sync (base_video_decoder, FALSE, 0, n);
+
+ gst_adapter_flush (base_video_decoder->input_adapter, m);
+
+ if (m < n) {
+ GST_DEBUG ("found possible sync after %d bytes (of %d)", m, n);
+
+ /* this is only "maybe" sync */
+ base_video_decoder->have_sync = TRUE;
+ }
+
+ if (!base_video_decoder->have_sync) {
+ gst_object_unref (base_video_decoder);
+ return GST_FLOW_OK;
+ }
+ }
+
+ buffer = gst_adapter_get_buffer (base_video_decoder->input_adapter);
+
+ base_video_decoder->buffer_timestamp = GST_BUFFER_TIMESTAMP (buffer);
+ gst_buffer_unref (buffer);
+
+ do {
+ ret = klass->parse_data (base_video_decoder, FALSE);
+ } while (ret == GST_FLOW_OK);
+
+ if (ret == GST_BASE_VIDEO_DECODER_FLOW_NEED_DATA) {
+ gst_object_unref (base_video_decoder);
+ return GST_FLOW_OK;
+ }
+
+ gst_object_unref (base_video_decoder);
+ return ret;
+}
+
+static GstStateChangeReturn
+gst_base_video_decoder_change_state (GstElement * element,
+ GstStateChange transition)
+{
+ GstBaseVideoDecoder *base_video_decoder;
+ GstBaseVideoDecoderClass *base_video_decoder_class;
+ GstStateChangeReturn ret;
+
+ base_video_decoder = GST_BASE_VIDEO_DECODER (element);
+ base_video_decoder_class = GST_BASE_VIDEO_DECODER_GET_CLASS (element);
+
+ switch (transition) {
+ default:
+ break;
+ }
+
+ ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+
+ switch (transition) {
+ case GST_STATE_CHANGE_PAUSED_TO_READY:
+ if (base_video_decoder_class->stop) {
+ base_video_decoder_class->stop (base_video_decoder);
+ }
+ break;
+ default:
+ break;
+ }
+
+ return ret;
+}
+
+static void
+gst_base_video_decoder_free_frame (GstVideoFrame * frame)
+{
+ g_return_if_fail (frame != NULL);
+
+ if (frame->sink_buffer) {
+ gst_buffer_unref (frame->sink_buffer);
+ }
+#if 0
+ if (frame->src_buffer) {
+ gst_buffer_unref (frame->src_buffer);
+ }
+#endif
+
+ g_free (frame);
+}
+
+static GstVideoFrame *
+gst_base_video_decoder_new_frame (GstBaseVideoDecoder * base_video_decoder)
+{
+ GstVideoFrame *frame;
+
+ frame = g_malloc0 (sizeof (GstVideoFrame));
+
+ frame->system_frame_number = base_video_decoder->system_frame_number;
+ base_video_decoder->system_frame_number++;
+
+ frame->decode_frame_number = frame->system_frame_number -
+ base_video_decoder->reorder_depth;
+
+ frame->decode_timestamp = -1;
+ frame->presentation_timestamp = -1;
+ frame->presentation_duration = -1;
+ frame->n_fields = 2;
+
+ return frame;
+}
+
+GstFlowReturn
+gst_base_video_decoder_finish_frame (GstBaseVideoDecoder * base_video_decoder,
+ GstVideoFrame * frame)
+{
+ GstBaseVideoDecoderClass *base_video_decoder_class;
+ GstBuffer *src_buffer;
+
+ GST_DEBUG ("finish frame");
+
+ base_video_decoder_class =
+ GST_BASE_VIDEO_DECODER_GET_CLASS (base_video_decoder);
+
+ GST_DEBUG ("finish frame sync=%d pts=%lld", frame->is_sync_point,
+ frame->presentation_timestamp);
+
+ if (frame->is_sync_point) {
+ if (GST_CLOCK_TIME_IS_VALID (frame->presentation_timestamp)) {
+ if (frame->presentation_timestamp != base_video_decoder->timestamp_offset) {
+ GST_DEBUG ("sync timestamp %lld diff %lld",
+ frame->presentation_timestamp,
+ frame->presentation_timestamp -
+ base_video_decoder->state.segment.start);
+ base_video_decoder->timestamp_offset = frame->presentation_timestamp;
+ base_video_decoder->field_index = 0;
+ } else {
+ /* This case is for one initial timestamp and no others, e.g.,
+ * filesrc ! decoder ! xvimagesink */
+ GST_WARNING ("sync timestamp didn't change, ignoring");
+ frame->presentation_timestamp = GST_CLOCK_TIME_NONE;
+ }
+ } else {
+ GST_WARNING ("sync point doesn't have timestamp");
+ if (GST_CLOCK_TIME_IS_VALID (base_video_decoder->timestamp_offset)) {
+ GST_ERROR ("No base timestamp. Assuming frames start at 0");
+ base_video_decoder->timestamp_offset = 0;
+ base_video_decoder->field_index = 0;
+ }
+ }
+ }
+ frame->field_index = base_video_decoder->field_index;
+ base_video_decoder->field_index += frame->n_fields;
+
+ if (frame->presentation_timestamp == GST_CLOCK_TIME_NONE) {
+ frame->presentation_timestamp =
+ gst_base_video_decoder_get_field_timestamp (base_video_decoder,
+ frame->field_index);
+ frame->presentation_duration = GST_CLOCK_TIME_NONE;
+ frame->decode_timestamp =
+ gst_base_video_decoder_get_timestamp (base_video_decoder,
+ frame->decode_frame_number);
+ }
+ if (frame->presentation_duration == GST_CLOCK_TIME_NONE) {
+ frame->presentation_duration =
+ gst_base_video_decoder_get_field_timestamp (base_video_decoder,
+ frame->field_index + frame->n_fields) - frame->presentation_timestamp;
+ }
+
+ if (GST_CLOCK_TIME_IS_VALID (base_video_decoder->last_timestamp)) {
+ if (frame->presentation_timestamp < base_video_decoder->last_timestamp) {
+ GST_WARNING ("decreasing timestamp (%lld < %lld)",
+ frame->presentation_timestamp, base_video_decoder->last_timestamp);
+ }
+ }
+ base_video_decoder->last_timestamp = frame->presentation_timestamp;
+
+ GST_BUFFER_FLAG_UNSET (frame->src_buffer, GST_BUFFER_FLAG_DELTA_UNIT);
+ if (base_video_decoder->state.interlaced) {
+#ifndef GST_VIDEO_BUFFER_TFF
+#define GST_VIDEO_BUFFER_TFF (GST_MINI_OBJECT_FLAG_LAST << 5)
+#endif
+#ifndef GST_VIDEO_BUFFER_RFF
+#define GST_VIDEO_BUFFER_RFF (GST_MINI_OBJECT_FLAG_LAST << 6)
+#endif
+#ifndef GST_VIDEO_BUFFER_ONEFIELD
+#define GST_VIDEO_BUFFER_ONEFIELD (GST_MINI_OBJECT_FLAG_LAST << 7)
+#endif
+ int tff = base_video_decoder->state.top_field_first;
+
+ if (frame->field_index & 1) {
+ tff ^= 1;
+ }
+ if (tff) {
+ GST_BUFFER_FLAG_SET (frame->src_buffer, GST_VIDEO_BUFFER_TFF);
+ } else {
+ GST_BUFFER_FLAG_UNSET (frame->src_buffer, GST_VIDEO_BUFFER_TFF);
+ }
+ GST_BUFFER_FLAG_UNSET (frame->src_buffer, GST_VIDEO_BUFFER_RFF);
+ GST_BUFFER_FLAG_UNSET (frame->src_buffer, GST_VIDEO_BUFFER_ONEFIELD);
+ if (frame->n_fields == 3) {
+ GST_BUFFER_FLAG_SET (frame->src_buffer, GST_VIDEO_BUFFER_RFF);
+ } else if (frame->n_fields == 1) {
+ GST_BUFFER_FLAG_UNSET (frame->src_buffer, GST_VIDEO_BUFFER_ONEFIELD);
+ }
+ }
+
+ GST_BUFFER_TIMESTAMP (frame->src_buffer) = frame->presentation_timestamp;
+ GST_BUFFER_DURATION (frame->src_buffer) = frame->presentation_duration;
+ GST_BUFFER_OFFSET (frame->src_buffer) = -1;
+ GST_BUFFER_OFFSET_END (frame->src_buffer) = -1;
+
+ GST_DEBUG ("pushing frame %lld", frame->presentation_timestamp);
+
+ base_video_decoder->frames =
+ g_list_remove (base_video_decoder->frames, frame);
+
+ gst_base_video_decoder_set_src_caps (base_video_decoder);
+
+ src_buffer = frame->src_buffer;
+
+ g_free (frame);
+
+ if (base_video_decoder->sink_clipping) {
+ gint64 start = GST_BUFFER_TIMESTAMP (src_buffer);
+ gint64 stop = GST_BUFFER_TIMESTAMP (src_buffer) +
+ GST_BUFFER_DURATION (src_buffer);
+
+ if (gst_segment_clip (&base_video_decoder->state.segment, GST_FORMAT_TIME,
+ start, stop, &start, &stop)) {
+ GST_BUFFER_TIMESTAMP (src_buffer) = start;
+ GST_BUFFER_DURATION (src_buffer) = stop - start;
+ } else {
+ GST_DEBUG ("dropping buffer outside segment");
+ gst_buffer_unref (src_buffer);
+ return GST_FLOW_OK;
+ }
+ }
+
+ return gst_pad_push (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_decoder),
+ src_buffer);
+}
+
+int
+gst_base_video_decoder_get_height (GstBaseVideoDecoder * base_video_decoder)
+{
+ return base_video_decoder->state.height;
+}
+
+int
+gst_base_video_decoder_get_width (GstBaseVideoDecoder * base_video_decoder)
+{
+ return base_video_decoder->state.width;
+}
+
+GstFlowReturn
+gst_base_video_decoder_end_of_stream (GstBaseVideoDecoder * base_video_decoder,
+ GstBuffer * buffer)
+{
+
+ if (base_video_decoder->frames) {
+ GST_DEBUG ("EOS with frames left over");
+ }
+
+ return gst_pad_push (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_decoder),
+ buffer);
+}
+
+void
+gst_base_video_decoder_add_to_frame (GstBaseVideoDecoder * base_video_decoder,
+ int n_bytes)
+{
+ GstBuffer *buf;
+
+ GST_DEBUG ("add to frame");
+
+#if 0
+ if (gst_adapter_available (base_video_decoder->output_adapter) == 0) {
+ GstBuffer *buffer;
+
+ buffer =
+ gst_adapter_get_orig_buffer_at_offset
+ (base_video_decoder->input_adapter, 0);
+ if (buffer) {
+ base_video_decoder->current_frame->presentation_timestamp =
+ GST_BUFFER_TIMESTAMP (buffer);
+ gst_buffer_unref (buffer);
+ }
+ }
+#endif
+
+ if (n_bytes == 0)
+ return;
+
+ buf = gst_adapter_take_buffer (base_video_decoder->input_adapter, n_bytes);
+
+ gst_adapter_push (base_video_decoder->output_adapter, buf);
+}
+
+static guint64
+gst_base_video_decoder_get_timestamp (GstBaseVideoDecoder * base_video_decoder,
+ int picture_number)
+{
+ if (base_video_decoder->state.fps_d == 0) {
+ return -1;
+ }
+ if (picture_number < base_video_decoder->base_picture_number) {
+ return base_video_decoder->timestamp_offset -
+ (gint64) gst_util_uint64_scale (base_video_decoder->base_picture_number
+ - picture_number, base_video_decoder->state.fps_d * GST_SECOND,
+ base_video_decoder->state.fps_n);
+ } else {
+ return base_video_decoder->timestamp_offset +
+ gst_util_uint64_scale (picture_number -
+ base_video_decoder->base_picture_number,
+ base_video_decoder->state.fps_d * GST_SECOND,
+ base_video_decoder->state.fps_n);
+ }
+}
+
+static guint64
+gst_base_video_decoder_get_field_timestamp (GstBaseVideoDecoder *
+ base_video_decoder, int field_offset)
+{
+ if (base_video_decoder->state.fps_d == 0) {
+ return GST_CLOCK_TIME_NONE;
+ }
+ if (field_offset < 0) {
+ GST_WARNING ("field offset < 0");
+ return GST_CLOCK_TIME_NONE;
+ }
+ return base_video_decoder->timestamp_offset +
+ gst_util_uint64_scale (field_offset,
+ base_video_decoder->state.fps_d * GST_SECOND,
+ base_video_decoder->state.fps_n * 2);
+}
+
+
+GstFlowReturn
+gst_base_video_decoder_have_frame (GstBaseVideoDecoder * base_video_decoder)
+{
+ GstVideoFrame *frame = base_video_decoder->current_frame;
+ GstBuffer *buffer;
+ GstBaseVideoDecoderClass *base_video_decoder_class;
+ GstFlowReturn ret = GST_FLOW_OK;
+ int n_available;
+
+ GST_DEBUG ("have_frame");
+
+ base_video_decoder_class =
+ GST_BASE_VIDEO_DECODER_GET_CLASS (base_video_decoder);
+
+ n_available = gst_adapter_available (base_video_decoder->output_adapter);
+ if (n_available) {
+ buffer = gst_adapter_take_buffer (base_video_decoder->output_adapter,
+ n_available);
+ } else {
+ buffer = gst_buffer_new_and_alloc (0);
+ }
+
+ frame->distance_from_sync = base_video_decoder->distance_from_sync;
+ base_video_decoder->distance_from_sync++;
+
+#if 0
+ if (frame->presentation_timestamp == GST_CLOCK_TIME_NONE) {
+ frame->presentation_timestamp =
+ gst_base_video_decoder_get_timestamp (base_video_decoder,
+ frame->presentation_frame_number);
+ frame->presentation_duration =
+ gst_base_video_decoder_get_timestamp (base_video_decoder,
+ frame->presentation_frame_number + 1) - frame->presentation_timestamp;
+ frame->decode_timestamp =
+ gst_base_video_decoder_get_timestamp (base_video_decoder,
+ frame->decode_frame_number);
+ }
+#endif
+
+#if 0
+ GST_BUFFER_TIMESTAMP (buffer) = frame->presentation_timestamp;
+ GST_BUFFER_DURATION (buffer) = frame->presentation_duration;
+ if (frame->decode_frame_number < 0) {
+ GST_BUFFER_OFFSET (buffer) = 0;
+ } else {
+ GST_BUFFER_OFFSET (buffer) = frame->decode_timestamp;
+ }
+ GST_BUFFER_OFFSET_END (buffer) = GST_CLOCK_TIME_NONE;
+#endif
+
+ GST_DEBUG ("pts %" GST_TIME_FORMAT,
+ GST_TIME_ARGS (frame->presentation_timestamp));
+ GST_DEBUG ("dts %" GST_TIME_FORMAT, GST_TIME_ARGS (frame->decode_timestamp));
+ GST_DEBUG ("dist %d", frame->distance_from_sync);
+
+ if (frame->is_sync_point) {
+ GST_BUFFER_FLAG_UNSET (buffer, GST_BUFFER_FLAG_DELTA_UNIT);
+ } else {
+ GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT);
+ }
+ if (base_video_decoder->discont) {
+ GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
+ base_video_decoder->discont = FALSE;
+ }
+
+ frame->sink_buffer = buffer;
+
+ base_video_decoder->frames = g_list_append (base_video_decoder->frames,
+ frame);
+
+ /* do something with frame */
+ ret = base_video_decoder_class->handle_frame (base_video_decoder, frame);
+ if (!GST_FLOW_IS_SUCCESS (ret)) {
+ GST_DEBUG ("flow error!");
+ }
+
+ /* create new frame */
+ base_video_decoder->current_frame =
+ gst_base_video_decoder_new_frame (base_video_decoder);
+
+ return ret;
+}
+
+GstVideoState *
+gst_base_video_decoder_get_state (GstBaseVideoDecoder * base_video_decoder)
+{
+ return &base_video_decoder->state;
+
+}
+
+void
+gst_base_video_decoder_set_state (GstBaseVideoDecoder * base_video_decoder,
+ GstVideoState * state)
+{
+ memcpy (&base_video_decoder->state, state, sizeof (*state));
+
+}
+
+void
+gst_base_video_decoder_lost_sync (GstBaseVideoDecoder * base_video_decoder)
+{
+ g_return_if_fail (GST_IS_BASE_VIDEO_DECODER (base_video_decoder));
+
+ GST_DEBUG ("lost_sync");
+
+ if (gst_adapter_available (base_video_decoder->input_adapter) >= 1) {
+ gst_adapter_flush (base_video_decoder->input_adapter, 1);
+ }
+
+ base_video_decoder->have_sync = FALSE;
+}
+
+void
+gst_base_video_decoder_set_sync_point (GstBaseVideoDecoder * base_video_decoder)
+{
+ GST_DEBUG ("set_sync_point");
+
+ base_video_decoder->current_frame->is_sync_point = TRUE;
+ base_video_decoder->distance_from_sync = 0;
+
+ base_video_decoder->current_frame->presentation_timestamp =
+ base_video_decoder->last_sink_timestamp;
+
+
+}
+
+GstVideoFrame *
+gst_base_video_decoder_get_frame (GstBaseVideoDecoder * base_video_decoder,
+ int frame_number)
+{
+ GList *g;
+
+ for (g = g_list_first (base_video_decoder->frames); g; g = g_list_next (g)) {
+ GstVideoFrame *frame = g->data;
+
+ if (frame->system_frame_number == frame_number) {
+ return frame;
+ }
+ }
+
+ return NULL;
+}
+
+void
+gst_base_video_decoder_set_src_caps (GstBaseVideoDecoder * base_video_decoder)
+{
+ GstCaps *caps;
+ GstVideoState *state = &base_video_decoder->state;
+
+ if (base_video_decoder->have_src_caps)
+ return;
+
+ caps = gst_video_format_new_caps (state->format,
+ state->width, state->height,
+ state->fps_n, state->fps_d, state->par_n, state->par_d);
+ gst_caps_set_simple (caps, "interlaced",
+ G_TYPE_BOOLEAN, state->interlaced, NULL);
+
+ GST_DEBUG ("setting caps %" GST_PTR_FORMAT, caps);
+
+ gst_pad_set_caps (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_decoder), caps);
+
+ base_video_decoder->have_src_caps = TRUE;
+}
--- /dev/null
+/* GStreamer
+ * Copyright (C) 2008 David Schleef <ds@schleef.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef _GST_BASE_VIDEO_DECODER_H_
+#define _GST_BASE_VIDEO_DECODER_H_
+
+#include <gst/video/gstbasevideocodec.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_BASE_VIDEO_DECODER \
+ (gst_base_video_decoder_get_type())
+#define GST_BASE_VIDEO_DECODER(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_BASE_VIDEO_DECODER,GstBaseVideoDecoder))
+#define GST_BASE_VIDEO_DECODER_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_BASE_VIDEO_DECODER,GstBaseVideoDecoderClass))
+#define GST_BASE_VIDEO_DECODER_GET_CLASS(obj) \
+ (G_TYPE_INSTANCE_GET_CLASS((obj),GST_TYPE_BASE_VIDEO_DECODER,GstBaseVideoDecoderClass))
+#define GST_IS_BASE_VIDEO_DECODER(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_BASE_VIDEO_DECODER))
+#define GST_IS_BASE_VIDEO_DECODER_CLASS(obj) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_BASE_VIDEO_DECODER))
+
+/**
+ * GST_BASE_VIDEO_DECODER_SINK_NAME:
+ *
+ * The name of the templates for the sink pad.
+ */
+#define GST_BASE_VIDEO_DECODER_SINK_NAME "sink"
+/**
+ * GST_BASE_VIDEO_DECODER_SRC_NAME:
+ *
+ * The name of the templates for the source pad.
+ */
+#define GST_BASE_VIDEO_DECODER_SRC_NAME "src"
+
+/**
+ * * GST_BASE_VIDEO_DECODER_FLOW_NEED_DATA:
+ * *
+ * */
+#define GST_BASE_VIDEO_DECODER_FLOW_NEED_DATA GST_FLOW_CUSTOM_SUCCESS
+
+
+typedef struct _GstBaseVideoDecoder GstBaseVideoDecoder;
+typedef struct _GstBaseVideoDecoderClass GstBaseVideoDecoderClass;
+
+struct _GstBaseVideoDecoder
+{
+ GstBaseVideoCodec base_video_codec;
+
+ /*< private >*/
+ GstAdapter *input_adapter;
+ GstAdapter *output_adapter;
+
+ GList *frames;
+
+ gboolean have_sync;
+ gboolean discont;
+ gboolean started;
+
+ GstVideoState state;
+
+ gboolean sink_clipping;
+
+ guint64 presentation_frame_number;
+ guint64 system_frame_number;
+
+ GstCaps *caps;
+ gboolean have_src_caps;
+
+ GstVideoFrame *current_frame;
+
+ int distance_from_sync;
+ int reorder_depth;
+
+ GstClockTime buffer_timestamp;
+
+ GstClockTime timestamp_offset;
+
+ gdouble proportion;
+ GstClockTime earliest_time;
+
+ GstBuffer *codec_data;
+
+ guint64 offset;
+ GstClockTime last_timestamp;
+
+ GstClockTime last_sink_timestamp;
+ GstClockTime last_sink_offset_end;
+ guint64 base_picture_number;
+
+ int field_index;
+};
+
+struct _GstBaseVideoDecoderClass
+{
+ GstBaseVideoCodecClass base_video_codec_class;
+
+ gboolean (*set_format) (GstBaseVideoDecoder *coder, GstVideoFormat,
+ int width, int height, int fps_n, int fps_d,
+ int par_n, int par_d);
+ gboolean (*start) (GstBaseVideoDecoder *coder);
+ gboolean (*stop) (GstBaseVideoDecoder *coder);
+ gboolean (*reset) (GstBaseVideoDecoder *coder);
+ int (*scan_for_sync) (GstBaseVideoDecoder *decoder, gboolean at_eos,
+ int offset, int n);
+ GstFlowReturn (*parse_data) (GstBaseVideoDecoder *decoder, gboolean at_eos);
+ gboolean (*finish) (GstBaseVideoDecoder *coder, GstVideoFrame *frame);
+ GstFlowReturn (*handle_frame) (GstBaseVideoDecoder *coder, GstVideoFrame *frame);
+ GstFlowReturn (*shape_output) (GstBaseVideoDecoder *coder, GstVideoFrame *frame);
+ GstCaps *(*get_caps) (GstBaseVideoDecoder *coder);
+
+};
+
+GType gst_base_video_decoder_get_type (void);
+
+int gst_base_video_decoder_get_width (GstBaseVideoDecoder *coder);
+int gst_base_video_decoder_get_height (GstBaseVideoDecoder *coder);
+
+guint64 gst_base_video_decoder_get_timestamp_offset (GstBaseVideoDecoder *coder);
+
+GstVideoFrame *gst_base_video_decoder_get_frame (GstBaseVideoDecoder *coder,
+ int frame_number);
+void gst_base_video_decoder_add_to_frame (GstBaseVideoDecoder *base_video_decoder,
+ int n_bytes);
+GstFlowReturn gst_base_video_decoder_finish_frame (GstBaseVideoDecoder *base_video_decoder,
+ GstVideoFrame *frame);
+GstFlowReturn gst_base_video_decoder_end_of_stream (GstBaseVideoDecoder *base_video_decoder,
+ GstBuffer *buffer);
+GstFlowReturn
+gst_base_video_decoder_have_frame (GstBaseVideoDecoder *base_video_decoder);
+GstVideoState * gst_base_video_decoder_get_state (GstBaseVideoDecoder *base_video_decoder);
+void gst_base_video_decoder_set_state (GstBaseVideoDecoder *base_video_decoder,
+ GstVideoState *state);
+void gst_base_video_decoder_lost_sync (GstBaseVideoDecoder *base_video_decoder);
+void gst_base_video_decoder_set_sync_point (GstBaseVideoDecoder *base_video_decoder);
+
+void gst_base_video_decoder_set_src_caps (GstBaseVideoDecoder *base_video_decoder);
+
+
+G_END_DECLS
+
+#endif
+
--- /dev/null
+/* GStreamer
+ * Copyright (C) 2008 David Schleef <ds@schleef.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "gstbasevideoencoder.h"
+#include "gstbasevideoutils.h"
+
+GST_DEBUG_CATEGORY_EXTERN (basevideo_debug);
+#define GST_CAT_DEFAULT basevideo_debug
+
+static void gst_base_video_encoder_finalize (GObject * object);
+
+static gboolean gst_base_video_encoder_sink_setcaps (GstPad * pad,
+ GstCaps * caps);
+static gboolean gst_base_video_encoder_sink_event (GstPad * pad,
+ GstEvent * event);
+static GstFlowReturn gst_base_video_encoder_chain (GstPad * pad,
+ GstBuffer * buf);
+//static GstFlowReturn gst_base_video_encoder_process (GstBaseVideoEncoder *base_video_encoder);
+static GstStateChangeReturn gst_base_video_encoder_change_state (GstElement *
+ element, GstStateChange transition);
+static const GstQueryType *gst_base_video_encoder_get_query_types (GstPad *
+ pad);
+static gboolean gst_base_video_encoder_src_query (GstPad * pad,
+ GstQuery * query);
+
+
+GST_BOILERPLATE (GstBaseVideoEncoder, gst_base_video_encoder, GstBaseVideoCodec,
+ GST_TYPE_BASE_VIDEO_CODEC);
+
+static void
+gst_base_video_encoder_base_init (gpointer g_class)
+{
+
+}
+
+static void
+gst_base_video_encoder_class_init (GstBaseVideoEncoderClass * klass)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *gstelement_class;
+
+ gobject_class = G_OBJECT_CLASS (klass);
+ gstelement_class = GST_ELEMENT_CLASS (klass);
+
+ gobject_class->finalize = gst_base_video_encoder_finalize;
+
+ gstelement_class->change_state = gst_base_video_encoder_change_state;
+
+ parent_class = g_type_class_peek_parent (klass);
+}
+
+static void
+gst_base_video_encoder_init (GstBaseVideoEncoder * base_video_encoder,
+ GstBaseVideoEncoderClass * klass)
+{
+ GstPad *pad;
+
+ GST_DEBUG ("gst_base_video_encoder_init");
+
+ pad = GST_BASE_VIDEO_CODEC_SINK_PAD (base_video_encoder);
+
+ gst_pad_set_chain_function (pad, gst_base_video_encoder_chain);
+ gst_pad_set_event_function (pad, gst_base_video_encoder_sink_event);
+ gst_pad_set_setcaps_function (pad, gst_base_video_encoder_sink_setcaps);
+ //gst_pad_set_query_function (pad, gst_base_video_encoder_sink_query);
+
+ pad = GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_encoder);
+
+ gst_pad_set_query_type_function (pad, gst_base_video_encoder_get_query_types);
+ gst_pad_set_query_function (pad, gst_base_video_encoder_src_query);
+}
+
+static gboolean
+gst_base_video_encoder_sink_setcaps (GstPad * pad, GstCaps * caps)
+{
+ GstBaseVideoEncoder *base_video_encoder;
+ GstBaseVideoEncoderClass *base_video_encoder_class;
+
+ base_video_encoder = GST_BASE_VIDEO_ENCODER (gst_pad_get_parent (pad));
+ base_video_encoder_class =
+ GST_BASE_VIDEO_ENCODER_GET_CLASS (base_video_encoder);
+
+ GST_DEBUG ("setcaps");
+
+ gst_base_video_state_from_caps (&base_video_encoder->state, caps);
+
+ base_video_encoder_class->set_format (base_video_encoder,
+ &base_video_encoder->state);
+
+ base_video_encoder_class->start (base_video_encoder);
+
+ g_object_unref (base_video_encoder);
+
+ return TRUE;
+}
+
+static void
+gst_base_video_encoder_finalize (GObject * object)
+{
+ GstBaseVideoEncoder *base_video_encoder;
+ GstBaseVideoEncoderClass *base_video_encoder_class;
+
+ g_return_if_fail (GST_IS_BASE_VIDEO_ENCODER (object));
+ base_video_encoder = GST_BASE_VIDEO_ENCODER (object);
+ base_video_encoder_class = GST_BASE_VIDEO_ENCODER_GET_CLASS (object);
+
+ GST_DEBUG ("finalize");
+
+ G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static gboolean
+gst_base_video_encoder_sink_event (GstPad * pad, GstEvent * event)
+{
+ GstBaseVideoEncoder *base_video_encoder;
+ GstBaseVideoEncoderClass *base_video_encoder_class;
+ gboolean ret = FALSE;
+
+ base_video_encoder = GST_BASE_VIDEO_ENCODER (gst_pad_get_parent (pad));
+ base_video_encoder_class =
+ GST_BASE_VIDEO_ENCODER_GET_CLASS (base_video_encoder);
+
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_EOS:
+ {
+ GstVideoFrame *frame;
+
+ frame = g_malloc0 (sizeof (GstVideoFrame));
+ frame->presentation_frame_number =
+ base_video_encoder->presentation_frame_number;
+ frame->presentation_duration = 0;
+ frame->is_eos = TRUE;
+ //frame->presentation_duration = 0;
+ base_video_encoder->presentation_frame_number++;
+
+ base_video_encoder->frames =
+ g_list_append (base_video_encoder->frames, frame);
+ base_video_encoder_class->finish (base_video_encoder, frame);
+
+ ret =
+ gst_pad_push_event (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_encoder),
+ event);
+ }
+ break;
+ case GST_EVENT_NEWSEGMENT:
+ {
+ gboolean update;
+ double rate;
+ double applied_rate;
+ GstFormat format;
+ gint64 start;
+ gint64 stop;
+ gint64 position;
+
+ gst_event_parse_new_segment_full (event, &update, &rate,
+ &applied_rate, &format, &start, &stop, &position);
+
+ if (format != GST_FORMAT_TIME)
+ goto newseg_wrong_format;
+
+ GST_DEBUG ("new segment %lld %lld", start, position);
+
+ gst_segment_set_newsegment_full (&base_video_encoder->state.segment,
+ update, rate, applied_rate, format, start, stop, position);
+
+ ret =
+ gst_pad_push_event (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_encoder),
+ event);
+ }
+ break;
+ default:
+ /* FIXME this changes the order of events */
+ ret =
+ gst_pad_push_event (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_encoder),
+ event);
+ break;
+ }
+
+done:
+ gst_object_unref (base_video_encoder);
+ return ret;
+
+newseg_wrong_format:
+ {
+ GST_DEBUG_OBJECT (base_video_encoder, "received non TIME newsegment");
+ gst_event_unref (event);
+ goto done;
+ }
+}
+
+static const GstQueryType *
+gst_base_video_encoder_get_query_types (GstPad * pad)
+{
+ static const GstQueryType query_types[] = {
+ //GST_QUERY_POSITION,
+ //GST_QUERY_DURATION,
+ GST_QUERY_CONVERT,
+ GST_QUERY_LATENCY,
+ 0
+ };
+
+ return query_types;
+}
+
+static gboolean
+gst_base_video_encoder_src_query (GstPad * pad, GstQuery * query)
+{
+ GstBaseVideoEncoder *enc;
+ gboolean res;
+ GstPad *peerpad;
+
+ enc = GST_BASE_VIDEO_ENCODER (gst_pad_get_parent (pad));
+ peerpad = gst_pad_get_peer (GST_BASE_VIDEO_CODEC_SINK_PAD (enc));
+
+ switch GST_QUERY_TYPE
+ (query) {
+ case GST_QUERY_CONVERT:
+ {
+ GstFormat src_fmt, dest_fmt;
+ gint64 src_val, dest_val;
+
+ gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
+ res =
+ gst_base_video_encoded_video_convert (&enc->state, src_fmt, src_val,
+ &dest_fmt, &dest_val);
+ if (!res)
+ goto error;
+ gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
+ break;
+ }
+ case GST_QUERY_LATENCY:
+ {
+ gboolean live;
+ GstClockTime min_latency, max_latency;
+
+ res = gst_pad_query (peerpad, query);
+ if (res) {
+ gst_query_parse_latency (query, &live, &min_latency, &max_latency);
+
+ min_latency += enc->min_latency;
+ if (max_latency != GST_CLOCK_TIME_NONE) {
+ max_latency += enc->max_latency;
+ }
+
+ gst_query_set_latency (query, live, min_latency, max_latency);
+ }
+ }
+ break;
+ default:
+ res = gst_pad_query_default (pad, query);
+ }
+ gst_object_unref (peerpad);
+ gst_object_unref (enc);
+ return res;
+
+error:
+ GST_DEBUG_OBJECT (enc, "query failed");
+ gst_object_unref (peerpad);
+ gst_object_unref (enc);
+ return res;
+}
+
+static gboolean
+gst_pad_is_negotiated (GstPad * pad)
+{
+ GstCaps *caps;
+
+ g_return_val_if_fail (pad != NULL, FALSE);
+
+ caps = gst_pad_get_negotiated_caps (pad);
+ if (caps) {
+ gst_caps_unref (caps);
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+static GstFlowReturn
+gst_base_video_encoder_chain (GstPad * pad, GstBuffer * buf)
+{
+ GstBaseVideoEncoder *base_video_encoder;
+ GstBaseVideoEncoderClass *klass;
+ GstVideoFrame *frame;
+
+ if (!gst_pad_is_negotiated (pad)) {
+ return GST_FLOW_NOT_NEGOTIATED;
+ }
+
+ base_video_encoder = GST_BASE_VIDEO_ENCODER (gst_pad_get_parent (pad));
+ klass = GST_BASE_VIDEO_ENCODER_GET_CLASS (base_video_encoder);
+
+ if (base_video_encoder->sink_clipping) {
+ gint64 start = GST_BUFFER_TIMESTAMP (buf);
+ gint64 stop = start + GST_BUFFER_DURATION (buf);
+ gint64 clip_start;
+ gint64 clip_stop;
+
+ if (!gst_segment_clip (&base_video_encoder->state.segment,
+ GST_FORMAT_TIME, start, stop, &clip_start, &clip_stop)) {
+ GST_DEBUG ("clipping to segment dropped frame");
+ goto done;
+ }
+ }
+
+ frame = g_malloc0 (sizeof (GstVideoFrame));
+ frame->sink_buffer = buf;
+ frame->presentation_timestamp = GST_BUFFER_TIMESTAMP (buf);
+ frame->presentation_duration = GST_BUFFER_DURATION (buf);
+ frame->presentation_frame_number =
+ base_video_encoder->presentation_frame_number;
+ base_video_encoder->presentation_frame_number++;
+
+ base_video_encoder->frames =
+ g_list_append (base_video_encoder->frames, frame);
+
+ klass->handle_frame (base_video_encoder, frame);
+
+done:
+ g_object_unref (base_video_encoder);
+
+ return GST_FLOW_OK;
+}
+
+static GstStateChangeReturn
+gst_base_video_encoder_change_state (GstElement * element,
+ GstStateChange transition)
+{
+ GstBaseVideoEncoder *base_video_encoder;
+ GstBaseVideoEncoderClass *base_video_encoder_class;
+ GstStateChangeReturn ret;
+
+ base_video_encoder = GST_BASE_VIDEO_ENCODER (element);
+ base_video_encoder_class = GST_BASE_VIDEO_ENCODER_GET_CLASS (element);
+
+ switch (transition) {
+ default:
+ break;
+ }
+
+ ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+
+ switch (transition) {
+ case GST_STATE_CHANGE_PAUSED_TO_READY:
+ if (base_video_encoder_class->stop) {
+ base_video_encoder_class->stop (base_video_encoder);
+ }
+ break;
+ default:
+ break;
+ }
+
+ return ret;
+}
+
+GstFlowReturn
+gst_base_video_encoder_finish_frame (GstBaseVideoEncoder * base_video_encoder,
+ GstVideoFrame * frame)
+{
+ GstFlowReturn ret;
+ GstBaseVideoEncoderClass *base_video_encoder_class;
+
+ base_video_encoder_class =
+ GST_BASE_VIDEO_ENCODER_GET_CLASS (base_video_encoder);
+
+ frame->system_frame_number = base_video_encoder->system_frame_number;
+ base_video_encoder->system_frame_number++;
+
+ if (frame->is_sync_point) {
+ base_video_encoder->distance_from_sync = 0;
+ GST_BUFFER_FLAG_UNSET (frame->src_buffer, GST_BUFFER_FLAG_DELTA_UNIT);
+ } else {
+ GST_BUFFER_FLAG_SET (frame->src_buffer, GST_BUFFER_FLAG_DELTA_UNIT);
+ }
+
+ frame->distance_from_sync = base_video_encoder->distance_from_sync;
+ base_video_encoder->distance_from_sync++;
+
+ frame->decode_frame_number = frame->system_frame_number - 1;
+ if (frame->decode_frame_number < 0) {
+ frame->decode_timestamp = 0;
+ } else {
+ frame->decode_timestamp = gst_util_uint64_scale (frame->decode_frame_number,
+ GST_SECOND * base_video_encoder->state.fps_d,
+ base_video_encoder->state.fps_n);
+ }
+
+ GST_BUFFER_TIMESTAMP (frame->src_buffer) = frame->presentation_timestamp;
+ GST_BUFFER_DURATION (frame->src_buffer) = frame->presentation_duration;
+ GST_BUFFER_OFFSET (frame->src_buffer) = frame->decode_timestamp;
+
+ base_video_encoder->frames =
+ g_list_remove (base_video_encoder->frames, frame);
+
+ if (!base_video_encoder->set_output_caps) {
+ GstCaps *caps;
+
+ if (base_video_encoder_class->get_caps) {
+ caps = base_video_encoder_class->get_caps (base_video_encoder);
+ } else {
+ caps = gst_caps_new_simple ("video/unknown", NULL);
+ }
+ base_video_encoder->caps = gst_caps_ref (caps);
+ gst_pad_set_caps (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_encoder), caps);
+ base_video_encoder->set_output_caps = TRUE;
+ }
+
+ if (base_video_encoder_class->shape_output) {
+ ret = base_video_encoder_class->shape_output (base_video_encoder, frame);
+ } else {
+ ret =
+ gst_pad_push (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_encoder),
+ frame->src_buffer);
+ }
+
+ g_free (frame);
+
+ return ret;
+}
+
+int
+gst_base_video_encoder_get_height (GstBaseVideoEncoder * base_video_encoder)
+{
+ return base_video_encoder->state.height;
+}
+
+int
+gst_base_video_encoder_get_width (GstBaseVideoEncoder * base_video_encoder)
+{
+ return base_video_encoder->state.width;
+}
+
+const GstVideoState *
+gst_base_video_encoder_get_state (GstBaseVideoEncoder * base_video_encoder)
+{
+ return &base_video_encoder->state;
+}
+
+GstFlowReturn
+gst_base_video_encoder_end_of_stream (GstBaseVideoEncoder * base_video_encoder,
+ GstBuffer * buffer)
+{
+
+ if (base_video_encoder->frames) {
+ GST_WARNING ("EOS with frames left over");
+ }
+
+ return gst_pad_push (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_encoder),
+ buffer);
+}
+
+void
+gst_base_video_encoder_set_latency (GstBaseVideoEncoder * base_video_encoder,
+ GstClockTime min_latency, GstClockTime max_latency)
+{
+ g_return_if_fail (min_latency >= 0);
+ g_return_if_fail (max_latency >= min_latency);
+
+ base_video_encoder->min_latency = min_latency;
+ base_video_encoder->max_latency = max_latency;
+}
+
+void
+gst_base_video_encoder_set_latency_fields (GstBaseVideoEncoder *
+ base_video_encoder, int n_fields)
+{
+ gint64 latency;
+
+ latency = gst_util_uint64_scale (n_fields,
+ base_video_encoder->state.fps_d * GST_SECOND,
+ 2 * base_video_encoder->state.fps_n);
+
+ gst_base_video_encoder_set_latency (base_video_encoder, latency, latency);
+
+}
--- /dev/null
+/* GStreamer
+ * Copyright (C) 2008 David Schleef <ds@schleef.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef _GST_BASE_VIDEO_ENCODER_H_
+#define _GST_BASE_VIDEO_ENCODER_H_
+
+#include <gst/video/gstbasevideocodec.h>
+#include <gst/video/gstbasevideoutils.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_BASE_VIDEO_ENCODER \
+ (gst_base_video_encoder_get_type())
+#define GST_BASE_VIDEO_ENCODER(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_BASE_VIDEO_ENCODER,GstBaseVideoEncoder))
+#define GST_BASE_VIDEO_ENCODER_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_BASE_VIDEO_ENCODER,GstBaseVideoEncoderClass))
+#define GST_BASE_VIDEO_ENCODER_GET_CLASS(obj) \
+ (G_TYPE_INSTANCE_GET_CLASS((obj),GST_TYPE_BASE_VIDEO_ENCODER,GstBaseVideoEncoderClass))
+#define GST_IS_BASE_VIDEO_ENCODER(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_BASE_VIDEO_ENCODER))
+#define GST_IS_BASE_VIDEO_ENCODER_CLASS(obj) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_BASE_VIDEO_ENCODER))
+
+/**
+ * GST_BASE_VIDEO_ENCODER_SINK_NAME:
+ *
+ * The name of the templates for the sink pad.
+ */
+#define GST_BASE_VIDEO_ENCODER_SINK_NAME "sink"
+/**
+ * GST_BASE_VIDEO_ENCODER_SRC_NAME:
+ *
+ * The name of the templates for the source pad.
+ */
+#define GST_BASE_VIDEO_ENCODER_SRC_NAME "src"
+
+
+typedef struct _GstBaseVideoEncoder GstBaseVideoEncoder;
+typedef struct _GstBaseVideoEncoderClass GstBaseVideoEncoderClass;
+
+struct _GstBaseVideoEncoder
+{
+ GstBaseVideoCodec base_video_codec;
+
+ /*< private >*/
+ GList *frames;
+
+ GstVideoState state;
+
+ gboolean sink_clipping;
+
+ guint64 presentation_frame_number;
+ guint64 system_frame_number;
+ int distance_from_sync;
+
+ GstCaps *caps;
+ gboolean set_output_caps;
+
+ gint64 min_latency;
+ gint64 max_latency;
+};
+
+struct _GstBaseVideoEncoderClass
+{
+ GstBaseVideoCodecClass base_video_codec_class;
+
+ gboolean (*set_format) (GstBaseVideoEncoder *coder, GstVideoState *state);
+ gboolean (*start) (GstBaseVideoEncoder *coder);
+ gboolean (*stop) (GstBaseVideoEncoder *coder);
+ gboolean (*finish) (GstBaseVideoEncoder *coder, GstVideoFrame *frame);
+ gboolean (*handle_frame) (GstBaseVideoEncoder *coder, GstVideoFrame *frame);
+ GstFlowReturn (*shape_output) (GstBaseVideoEncoder *coder, GstVideoFrame *frame);
+ GstCaps *(*get_caps) (GstBaseVideoEncoder *coder);
+
+};
+
+GType gst_base_video_encoder_get_type (void);
+
+int gst_base_video_encoder_get_width (GstBaseVideoEncoder *coder);
+int gst_base_video_encoder_get_height (GstBaseVideoEncoder *coder);
+const GstVideoState *gst_base_video_encoder_get_state (GstBaseVideoEncoder *coder);
+
+guint64 gst_base_video_encoder_get_timestamp_offset (GstBaseVideoEncoder *coder);
+
+GstVideoFrame *gst_base_video_encoder_get_frame (GstBaseVideoEncoder *coder,
+ int frame_number);
+GstFlowReturn gst_base_video_encoder_finish_frame (GstBaseVideoEncoder *base_video_encoder,
+ GstVideoFrame *frame);
+GstFlowReturn gst_base_video_encoder_end_of_stream (GstBaseVideoEncoder *base_video_encoder,
+ GstBuffer *buffer);
+
+void gst_base_video_encoder_set_latency (GstBaseVideoEncoder *base_video_encoder,
+ GstClockTime min_latency, GstClockTime max_latency);
+void gst_base_video_encoder_set_latency_fields (GstBaseVideoEncoder *base_video_encoder,
+ int n_fields);
+
+
+G_END_DECLS
+
+#endif
+
--- /dev/null
+/* Schrodinger
+ * Copyright (C) 2006 David Schleef <ds@schleef.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "gstbasevideoparse.h"
+
+#include <string.h>
+#include <math.h>
+
+GST_DEBUG_CATEGORY_EXTERN (basevideo_debug);
+#define GST_CAT_DEFAULT basevideo_debug
+
+
+
+/* GstBaseVideoParse signals and args */
+enum
+{
+ LAST_SIGNAL
+};
+
+enum
+{
+ ARG_0
+};
+
+static void gst_base_video_parse_finalize (GObject * object);
+
+static const GstQueryType *gst_base_video_parse_get_query_types (GstPad * pad);
+static gboolean gst_base_video_parse_src_query (GstPad * pad, GstQuery * query);
+static gboolean gst_base_video_parse_sink_query (GstPad * pad,
+ GstQuery * query);
+static gboolean gst_base_video_parse_src_event (GstPad * pad, GstEvent * event);
+static gboolean gst_base_video_parse_sink_event (GstPad * pad,
+ GstEvent * event);
+static GstStateChangeReturn gst_base_video_parse_change_state (GstElement *
+ element, GstStateChange transition);
+static GstFlowReturn gst_base_video_parse_push_all (GstBaseVideoParse *
+ base_video_parse, gboolean at_eos);
+static GstFlowReturn gst_base_video_parse_chain (GstPad * pad, GstBuffer * buf);
+static void gst_base_video_parse_free_frame (GstVideoFrame * frame);
+static GstVideoFrame *gst_base_video_parse_new_frame (GstBaseVideoParse *
+ base_video_parse);
+
+
+GST_BOILERPLATE (GstBaseVideoParse, gst_base_video_parse,
+ GstBaseVideoCodec, GST_TYPE_BASE_VIDEO_CODEC);
+
+static void
+gst_base_video_parse_base_init (gpointer g_class)
+{
+
+}
+
+static void
+gst_base_video_parse_class_init (GstBaseVideoParseClass * klass)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *element_class;
+
+ gobject_class = G_OBJECT_CLASS (klass);
+ element_class = GST_ELEMENT_CLASS (klass);
+
+ gobject_class->finalize = gst_base_video_parse_finalize;
+
+ element_class->change_state = gst_base_video_parse_change_state;
+}
+
+static void
+gst_base_video_parse_init (GstBaseVideoParse * base_video_parse,
+ GstBaseVideoParseClass * klass)
+{
+ GstPad *pad;
+
+ GST_DEBUG ("gst_base_video_parse_init");
+
+ pad = GST_BASE_VIDEO_CODEC_SINK_PAD (base_video_parse);
+
+ gst_pad_set_chain_function (pad, gst_base_video_parse_chain);
+ gst_pad_set_query_function (pad, gst_base_video_parse_sink_query);
+ gst_pad_set_event_function (pad, gst_base_video_parse_sink_event);
+
+ pad = GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_parse);
+
+ gst_pad_set_query_type_function (pad, gst_base_video_parse_get_query_types);
+ gst_pad_set_query_function (pad, gst_base_video_parse_src_query);
+ gst_pad_set_event_function (pad, gst_base_video_parse_src_event);
+
+ base_video_parse->input_adapter = gst_adapter_new ();
+ base_video_parse->output_adapter = gst_adapter_new ();
+
+ base_video_parse->reorder_depth = 1;
+
+ base_video_parse->current_frame =
+ gst_base_video_parse_new_frame (base_video_parse);
+}
+
+static void
+gst_base_video_parse_reset (GstBaseVideoParse * base_video_parse)
+{
+ GST_DEBUG ("reset");
+
+ base_video_parse->discont = TRUE;
+ base_video_parse->have_sync = FALSE;
+
+ base_video_parse->system_frame_number = 0;
+ base_video_parse->presentation_frame_number = 0;
+
+ if (base_video_parse->caps) {
+ gst_caps_unref (base_video_parse->caps);
+ base_video_parse->caps = NULL;
+ }
+
+ gst_segment_init (&base_video_parse->state.segment, GST_FORMAT_TIME);
+ gst_adapter_clear (base_video_parse->input_adapter);
+ gst_adapter_clear (base_video_parse->output_adapter);
+
+ if (base_video_parse->current_frame) {
+ gst_base_video_parse_free_frame (base_video_parse->current_frame);
+ }
+ base_video_parse->current_frame =
+ gst_base_video_parse_new_frame (base_video_parse);
+
+}
+
+static void
+gst_base_video_parse_finalize (GObject * object)
+{
+ GstBaseVideoParse *base_video_parse;
+
+ g_return_if_fail (GST_IS_BASE_VIDEO_PARSE (object));
+ base_video_parse = GST_BASE_VIDEO_PARSE (object);
+
+ if (base_video_parse->input_adapter) {
+ g_object_unref (base_video_parse->input_adapter);
+ }
+ if (base_video_parse->output_adapter) {
+ g_object_unref (base_video_parse->output_adapter);
+ }
+
+ G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static const GstQueryType *
+gst_base_video_parse_get_query_types (GstPad * pad)
+{
+ static const GstQueryType query_types[] = {
+ GST_QUERY_POSITION,
+ GST_QUERY_DURATION,
+ GST_QUERY_CONVERT,
+ 0
+ };
+
+ return query_types;
+}
+
+#if 0
+static gboolean
+gst_base_video_parse_src_convert (GstPad * pad,
+ GstFormat src_format, gint64 src_value,
+ GstFormat * dest_format, gint64 * dest_value)
+{
+ gboolean res;
+ GstBaseVideoParse *dec;
+
+ if (src_format == *dest_format) {
+ *dest_value = src_value;
+ return TRUE;
+ }
+
+ dec = GST_BASE_VIDEO_PARSE (gst_pad_get_parent (pad));
+
+ if (src_format == GST_FORMAT_DEFAULT && *dest_format == GST_FORMAT_TIME) {
+ if (dec->fps_d != 0) {
+ *dest_value = gst_util_uint64_scale (granulepos_to_frame (src_value),
+ dec->fps_d * GST_SECOND, dec->fps_n);
+ res = TRUE;
+ } else {
+ res = FALSE;
+ }
+ } else {
+ GST_WARNING ("unhandled conversion from %d to %d", src_format,
+ *dest_format);
+ res = FALSE;
+ }
+
+ gst_object_unref (dec);
+
+ return res;
+}
+
+static gboolean
+gst_base_video_parse_sink_convert (GstPad * pad,
+ GstFormat src_format, gint64 src_value,
+ GstFormat * dest_format, gint64 * dest_value)
+{
+ gboolean res = TRUE;
+ GstBaseVideoParse *dec;
+
+ if (src_format == *dest_format) {
+ *dest_value = src_value;
+ return TRUE;
+ }
+
+ dec = GST_BASE_VIDEO_PARSE (gst_pad_get_parent (pad));
+
+ /* FIXME: check if we are in a decoding state */
+
+ switch (src_format) {
+ case GST_FORMAT_DEFAULT:
+ switch (*dest_format) {
+ case GST_FORMAT_TIME:
+ *dest_value = gst_util_uint64_scale (src_value,
+ dec->fps_d * GST_SECOND, dec->fps_n);
+ break;
+ default:
+ res = FALSE;
+ }
+ break;
+ case GST_FORMAT_TIME:
+ switch (*dest_format) {
+ case GST_FORMAT_DEFAULT:
+ {
+ *dest_value = gst_util_uint64_scale (src_value,
+ dec->fps_n, dec->fps_d * GST_SECOND);
+ break;
+ }
+ default:
+ res = FALSE;
+ break;
+ }
+ break;
+ default:
+ res = FALSE;
+ break;
+ }
+
+ gst_object_unref (dec);
+
+ return res;
+}
+#endif
+
+static gboolean
+gst_base_video_parse_src_query (GstPad * pad, GstQuery * query)
+{
+ GstBaseVideoParse *base_parse;
+ gboolean res = FALSE;
+
+ base_parse = GST_BASE_VIDEO_PARSE (gst_pad_get_parent (pad));
+
+ switch (GST_QUERY_TYPE (query)) {
+ case GST_QUERY_POSITION:
+ {
+ GstFormat format;
+ gint64 time;
+ gint64 value;
+
+ gst_query_parse_position (query, &format, NULL);
+
+ time = gst_util_uint64_scale (base_parse->presentation_frame_number,
+ base_parse->state.fps_n, base_parse->state.fps_d);
+ time += base_parse->state.segment.time;
+ GST_DEBUG ("query position %lld", time);
+ res = gst_base_video_encoded_video_convert (&base_parse->state,
+ GST_FORMAT_TIME, time, &format, &value);
+ if (!res)
+ goto error;
+
+ gst_query_set_position (query, format, value);
+ break;
+ }
+ case GST_QUERY_DURATION:
+ res =
+ gst_pad_query (GST_PAD_PEER (GST_BASE_VIDEO_CODEC_SINK_PAD
+ (base_parse)), query);
+ if (!res)
+ goto error;
+ break;
+ case GST_QUERY_CONVERT:
+ {
+ GstFormat src_fmt, dest_fmt;
+ gint64 src_val, dest_val;
+
+ GST_WARNING ("query convert");
+
+ gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
+ res = gst_base_video_encoded_video_convert (&base_parse->state,
+ src_fmt, src_val, &dest_fmt, &dest_val);
+ if (!res)
+ goto error;
+ gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
+ break;
+ }
+ default:
+ res = gst_pad_query_default (pad, query);
+ break;
+ }
+done:
+ gst_object_unref (base_parse);
+
+ return res;
+error:
+ GST_DEBUG_OBJECT (base_parse, "query failed");
+ goto done;
+}
+
+static gboolean
+gst_base_video_parse_sink_query (GstPad * pad, GstQuery * query)
+{
+ GstBaseVideoParse *base_video_parse;
+ gboolean res = FALSE;
+
+ base_video_parse = GST_BASE_VIDEO_PARSE (gst_pad_get_parent (pad));
+
+ switch (GST_QUERY_TYPE (query)) {
+ case GST_QUERY_CONVERT:
+ {
+ GstFormat src_fmt, dest_fmt;
+ gint64 src_val, dest_val;
+
+ gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
+ res = gst_base_video_encoded_video_convert (&base_video_parse->state,
+ src_fmt, src_val, &dest_fmt, &dest_val);
+ if (!res)
+ goto error;
+ gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
+ break;
+ }
+ default:
+ res = gst_pad_query_default (pad, query);
+ break;
+ }
+done:
+ gst_object_unref (base_video_parse);
+
+ return res;
+error:
+ GST_DEBUG_OBJECT (base_video_parse, "query failed");
+ goto done;
+}
+
+static gboolean
+gst_base_video_parse_src_event (GstPad * pad, GstEvent * event)
+{
+ GstBaseVideoParse *base_video_parse;
+ gboolean res = FALSE;
+
+ base_video_parse = GST_BASE_VIDEO_PARSE (gst_pad_get_parent (pad));
+
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_SEEK:
+ {
+ GstFormat format, tformat;
+ gdouble rate;
+ GstEvent *real_seek;
+ GstSeekFlags flags;
+ GstSeekType cur_type, stop_type;
+ gint64 cur, stop;
+ gint64 tcur, tstop;
+
+ gst_event_parse_seek (event, &rate, &format, &flags, &cur_type,
+ &cur, &stop_type, &stop);
+ gst_event_unref (event);
+
+ tformat = GST_FORMAT_TIME;
+ res = gst_base_video_encoded_video_convert (&base_video_parse->state,
+ format, cur, &tformat, &tcur);
+ if (!res)
+ goto convert_error;
+ res = gst_base_video_encoded_video_convert (&base_video_parse->state,
+ format, stop, &tformat, &tstop);
+ if (!res)
+ goto convert_error;
+
+ real_seek = gst_event_new_seek (rate, GST_FORMAT_TIME,
+ flags, cur_type, tcur, stop_type, tstop);
+
+ res =
+ gst_pad_push_event (GST_BASE_VIDEO_CODEC_SINK_PAD (base_video_parse),
+ real_seek);
+
+ break;
+ }
+#if 0
+ case GST_EVENT_QOS:
+ {
+ gdouble proportion;
+ GstClockTimeDiff diff;
+ GstClockTime timestamp;
+
+ gst_event_parse_qos (event, &proportion, &diff, ×tamp);
+
+ GST_OBJECT_LOCK (base_video_parse);
+ base_video_parse->proportion = proportion;
+ base_video_parse->earliest_time = timestamp + diff;
+ GST_OBJECT_UNLOCK (base_video_parse);
+
+ GST_DEBUG_OBJECT (base_video_parse,
+ "got QoS %" GST_TIME_FORMAT ", %" G_GINT64_FORMAT,
+ GST_TIME_ARGS (timestamp), diff);
+
+ res = gst_pad_push_event (base_video_parse->sinkpad, event);
+ break;
+ }
+#endif
+ default:
+ res =
+ gst_pad_push_event (GST_BASE_VIDEO_CODEC_SINK_PAD (base_video_parse),
+ event);
+ break;
+ }
+done:
+ gst_object_unref (base_video_parse);
+ return res;
+
+convert_error:
+ GST_DEBUG_OBJECT (base_video_parse, "could not convert format");
+ goto done;
+}
+
+static gboolean
+gst_base_video_parse_sink_event (GstPad * pad, GstEvent * event)
+{
+ GstBaseVideoParse *base_video_parse;
+ gboolean ret = FALSE;
+
+ base_video_parse = GST_BASE_VIDEO_PARSE (gst_pad_get_parent (pad));
+
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_FLUSH_START:
+ ret =
+ gst_pad_push_event (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_parse),
+ event);
+ break;
+ case GST_EVENT_FLUSH_STOP:
+ gst_base_video_parse_reset (base_video_parse);
+ ret =
+ gst_pad_push_event (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_parse),
+ event);
+ break;
+ case GST_EVENT_EOS:
+ if (gst_base_video_parse_push_all (base_video_parse,
+ FALSE) == GST_FLOW_ERROR) {
+ gst_event_unref (event);
+ return FALSE;
+ }
+
+ ret =
+ gst_pad_push_event (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_parse),
+ event);
+ break;
+ case GST_EVENT_NEWSEGMENT:
+ {
+ gboolean update;
+ GstFormat format;
+ gdouble rate;
+ gint64 start, stop, time;
+
+ gst_event_parse_new_segment (event, &update, &rate, &format, &start,
+ &stop, &time);
+
+ if (format != GST_FORMAT_TIME)
+ goto newseg_wrong_format;
+
+ if (rate <= 0.0)
+ goto newseg_wrong_rate;
+
+ GST_DEBUG ("newsegment %lld %lld", start, time);
+ gst_segment_set_newsegment (&base_video_parse->state.segment, update,
+ rate, format, start, stop, time);
+
+ ret =
+ gst_pad_push_event (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_parse),
+ event);
+ break;
+ }
+ default:
+ ret =
+ gst_pad_push_event (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_parse),
+ event);
+ break;
+ }
+done:
+ gst_object_unref (base_video_parse);
+ return ret;
+
+newseg_wrong_format:
+ GST_DEBUG_OBJECT (base_video_parse, "received non TIME newsegment");
+ gst_event_unref (event);
+ goto done;
+
+newseg_wrong_rate:
+ GST_DEBUG_OBJECT (base_video_parse, "negative rates not supported");
+ gst_event_unref (event);
+ goto done;
+}
+
+
+static GstStateChangeReturn
+gst_base_video_parse_change_state (GstElement * element,
+ GstStateChange transition)
+{
+ GstBaseVideoParse *base_parse = GST_BASE_VIDEO_PARSE (element);
+ GstStateChangeReturn ret;
+
+ switch (transition) {
+ case GST_STATE_CHANGE_NULL_TO_READY:
+ break;
+ case GST_STATE_CHANGE_READY_TO_PAUSED:
+ gst_base_video_parse_reset (base_parse);
+ break;
+ case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
+ break;
+ default:
+ break;
+ }
+
+ ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+
+ switch (transition) {
+ case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
+ break;
+ case GST_STATE_CHANGE_PAUSED_TO_READY:
+ gst_base_video_parse_reset (base_parse);
+ break;
+ case GST_STATE_CHANGE_READY_TO_NULL:
+ break;
+ default:
+ break;
+ }
+
+ return ret;
+}
+
+static guint64
+gst_base_video_parse_get_timestamp (GstBaseVideoParse * base_video_parse,
+ int picture_number)
+{
+ if (picture_number < 0) {
+ return base_video_parse->timestamp_offset -
+ (gint64) gst_util_uint64_scale (-picture_number,
+ base_video_parse->state.fps_d * GST_SECOND,
+ base_video_parse->state.fps_n);
+ } else {
+ return base_video_parse->timestamp_offset +
+ gst_util_uint64_scale (picture_number,
+ base_video_parse->state.fps_d * GST_SECOND,
+ base_video_parse->state.fps_n);
+ }
+}
+
+static GstFlowReturn
+gst_base_video_parse_push_all (GstBaseVideoParse * base_video_parse,
+ gboolean at_eos)
+{
+ GstFlowReturn ret = GST_FLOW_OK;
+
+ /* FIXME do stuff */
+
+ return ret;
+}
+
+static GstFlowReturn
+gst_base_video_parse_chain (GstPad * pad, GstBuffer * buf)
+{
+ GstBaseVideoParse *base_video_parse;
+ GstBaseVideoParseClass *klass;
+ GstBuffer *buffer;
+ GstFlowReturn ret;
+
+ GST_DEBUG ("chain with %d bytes", GST_BUFFER_SIZE (buf));
+
+ base_video_parse = GST_BASE_VIDEO_PARSE (GST_PAD_PARENT (pad));
+ klass = GST_BASE_VIDEO_PARSE_GET_CLASS (base_video_parse);
+
+ if (!base_video_parse->started) {
+ klass->start (base_video_parse);
+ base_video_parse->started = TRUE;
+ }
+
+ if (G_UNLIKELY (GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DISCONT))) {
+ GST_DEBUG_OBJECT (base_video_parse, "received DISCONT buffer");
+ gst_base_video_parse_reset (base_video_parse);
+ base_video_parse->discont = TRUE;
+ base_video_parse->have_sync = FALSE;
+ }
+
+ if (GST_BUFFER_TIMESTAMP (buf) != GST_CLOCK_TIME_NONE) {
+ base_video_parse->last_timestamp = GST_BUFFER_TIMESTAMP (buf);
+ }
+ gst_adapter_push (base_video_parse->input_adapter, buf);
+
+ if (!base_video_parse->have_sync) {
+ int n, m;
+
+ GST_DEBUG ("no sync, scanning");
+
+ n = gst_adapter_available (base_video_parse->input_adapter);
+ m = klass->scan_for_sync (base_video_parse->input_adapter, FALSE, 0, n);
+
+ gst_adapter_flush (base_video_parse->input_adapter, m);
+
+ if (m < n) {
+ GST_DEBUG ("found possible sync after %d bytes (of %d)", m, n);
+
+ /* this is only "maybe" sync */
+ base_video_parse->have_sync = TRUE;
+ }
+
+ if (!base_video_parse->have_sync) {
+ return GST_FLOW_OK;
+ }
+ }
+
+ buffer = gst_adapter_get_buffer (base_video_parse->input_adapter);
+
+ //base_video_parse->buffer_timestamp = GST_BUFFER_TIMESTAMP (buffer);
+ gst_buffer_unref (buffer);
+
+ /* FIXME check klass->parse_data */
+
+ do {
+ ret = klass->parse_data (base_video_parse, FALSE);
+ } while (ret == GST_FLOW_OK);
+
+ if (ret == GST_BASE_VIDEO_PARSE_FLOW_NEED_DATA) {
+ return GST_FLOW_OK;
+ }
+ return ret;
+}
+
+GstVideoState *
+gst_base_video_parse_get_state (GstBaseVideoParse * base_video_parse)
+{
+ return &base_video_parse->state;
+}
+
+void
+gst_base_video_parse_set_state (GstBaseVideoParse * base_video_parse,
+ GstVideoState * state)
+{
+ GST_DEBUG ("set_state");
+
+ memcpy (&base_video_parse->state, state, sizeof (GstVideoState));
+
+ /* FIXME set caps */
+
+}
+
+
+gboolean
+gst_base_video_parse_set_src_caps (GstBaseVideoParse * base_video_parse,
+ GstCaps * caps)
+{
+ g_return_val_if_fail (GST_IS_BASE_VIDEO_PARSE (base_video_parse), FALSE);
+
+ GST_DEBUG ("set_src_caps");
+
+ return gst_pad_set_caps (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_parse),
+ caps);
+}
+
+void
+gst_base_video_parse_lost_sync (GstBaseVideoParse * base_video_parse)
+{
+ g_return_if_fail (GST_IS_BASE_VIDEO_PARSE (base_video_parse));
+
+ GST_DEBUG ("lost_sync");
+
+ if (gst_adapter_available (base_video_parse->input_adapter) >= 1) {
+ gst_adapter_flush (base_video_parse->input_adapter, 1);
+ }
+
+ base_video_parse->have_sync = FALSE;
+}
+
+GstVideoFrame *
+gst_base_video_parse_get_frame (GstBaseVideoParse * base_video_parse)
+{
+ g_return_val_if_fail (GST_IS_BASE_VIDEO_PARSE (base_video_parse), NULL);
+
+ return base_video_parse->current_frame;
+}
+
+void
+gst_base_video_parse_add_to_frame (GstBaseVideoParse * base_video_parse,
+ int n_bytes)
+{
+ GstBuffer *buf;
+
+ GST_DEBUG ("add_to_frame");
+
+ buf = gst_adapter_take_buffer (base_video_parse->input_adapter, n_bytes);
+
+ gst_adapter_push (base_video_parse->output_adapter, buf);
+}
+
+GstFlowReturn
+gst_base_video_parse_finish_frame (GstBaseVideoParse * base_video_parse)
+{
+ GstVideoFrame *frame = base_video_parse->current_frame;
+ GstBuffer *buffer;
+ GstBaseVideoParseClass *base_video_parse_class;
+ GstFlowReturn ret;
+
+ GST_DEBUG ("finish_frame");
+
+ base_video_parse_class = GST_BASE_VIDEO_PARSE_GET_CLASS (base_video_parse);
+
+ buffer = gst_adapter_take_buffer (base_video_parse->output_adapter,
+ gst_adapter_available (base_video_parse->output_adapter));
+
+ if (frame->is_sync_point) {
+ base_video_parse->timestamp_offset = base_video_parse->last_timestamp -
+ gst_util_uint64_scale (frame->presentation_frame_number,
+ base_video_parse->state.fps_d * GST_SECOND,
+ base_video_parse->state.fps_n);
+ base_video_parse->distance_from_sync = 0;
+ }
+
+ frame->distance_from_sync = base_video_parse->distance_from_sync;
+ base_video_parse->distance_from_sync++;
+
+ frame->presentation_timestamp =
+ gst_base_video_parse_get_timestamp (base_video_parse,
+ frame->presentation_frame_number);
+ frame->presentation_duration =
+ gst_base_video_parse_get_timestamp (base_video_parse,
+ frame->presentation_frame_number + 1) - frame->presentation_timestamp;
+ frame->decode_timestamp =
+ gst_base_video_parse_get_timestamp (base_video_parse,
+ frame->decode_frame_number);
+
+ GST_BUFFER_TIMESTAMP (buffer) = frame->presentation_timestamp;
+ GST_BUFFER_DURATION (buffer) = frame->presentation_duration;
+ if (frame->decode_frame_number < 0) {
+ GST_BUFFER_OFFSET (buffer) = 0;
+ } else {
+ GST_BUFFER_OFFSET (buffer) = frame->decode_timestamp;
+ }
+ GST_BUFFER_OFFSET_END (buffer) = GST_CLOCK_TIME_NONE;
+
+ GST_DEBUG ("pts %" GST_TIME_FORMAT,
+ GST_TIME_ARGS (frame->presentation_timestamp));
+ GST_DEBUG ("dts %" GST_TIME_FORMAT, GST_TIME_ARGS (frame->decode_timestamp));
+ GST_DEBUG ("dist %d", frame->distance_from_sync);
+
+ if (frame->is_sync_point) {
+ GST_BUFFER_FLAG_UNSET (buffer, GST_BUFFER_FLAG_DELTA_UNIT);
+ } else {
+ GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT);
+ }
+
+ frame->src_buffer = buffer;
+ ret = base_video_parse_class->shape_output (base_video_parse, frame);
+
+ gst_base_video_parse_free_frame (base_video_parse->current_frame);
+
+ /* create new frame */
+ base_video_parse->current_frame =
+ gst_base_video_parse_new_frame (base_video_parse);
+
+ return ret;
+}
+
+static void
+gst_base_video_parse_free_frame (GstVideoFrame * frame)
+{
+ if (frame->sink_buffer) {
+ gst_buffer_unref (frame->sink_buffer);
+ }
+#if 0
+ if (frame->src_buffer) {
+ gst_buffer_unref (frame->src_buffer);
+ }
+#endif
+
+ g_free (frame);
+}
+
+static GstVideoFrame *
+gst_base_video_parse_new_frame (GstBaseVideoParse * base_video_parse)
+{
+ GstVideoFrame *frame;
+
+ frame = g_malloc0 (sizeof (GstVideoFrame));
+
+ frame->system_frame_number = base_video_parse->system_frame_number;
+ base_video_parse->system_frame_number++;
+
+ frame->decode_frame_number = frame->system_frame_number -
+ base_video_parse->reorder_depth;
+
+ return frame;
+}
+
+void
+gst_base_video_parse_set_sync_point (GstBaseVideoParse * base_video_parse)
+{
+ GST_DEBUG ("set_sync_point");
+
+ base_video_parse->current_frame->is_sync_point = TRUE;
+
+ base_video_parse->distance_from_sync = 0;
+}
+
+GstFlowReturn
+gst_base_video_parse_push (GstBaseVideoParse * base_video_parse,
+ GstBuffer * buffer)
+{
+ GstBaseVideoParseClass *base_video_parse_class;
+
+ base_video_parse_class = GST_BASE_VIDEO_PARSE_GET_CLASS (base_video_parse);
+
+ if (base_video_parse->caps == NULL) {
+ gboolean ret;
+
+ base_video_parse->caps =
+ base_video_parse_class->get_caps (base_video_parse);
+
+ ret = gst_pad_set_caps (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_parse),
+ base_video_parse->caps);
+
+ if (!ret) {
+ GST_WARNING ("pad didn't accept caps");
+ return GST_FLOW_ERROR;
+ }
+ }
+ gst_buffer_set_caps (buffer, base_video_parse->caps);
+
+ GST_DEBUG ("pushing ts=%lld dur=%lld off=%lld off_end=%lld",
+ GST_BUFFER_TIMESTAMP (buffer),
+ GST_BUFFER_DURATION (buffer),
+ GST_BUFFER_OFFSET (buffer), GST_BUFFER_OFFSET_END (buffer));
+
+ if (base_video_parse->discont) {
+ GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
+ base_video_parse->discont = FALSE;
+ } else {
+ GST_BUFFER_FLAG_UNSET (buffer, GST_BUFFER_FLAG_DISCONT);
+ }
+
+ return gst_pad_push (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_parse), buffer);
+}
--- /dev/null
+/* GStreamer
+ * Copyright (C) 2008 David Schleef <ds@schleef.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef _GST_BASE_VIDEO_PARSE_H_
+#define _GST_BASE_VIDEO_PARSE_H_
+
+#include <gst/video/gstbasevideocodec.h>
+#include <gst/video/gstbasevideoutils.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_BASE_VIDEO_PARSE \
+ (gst_base_video_parse_get_type())
+#define GST_BASE_VIDEO_PARSE(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_BASE_VIDEO_PARSE,GstBaseVideoParse))
+#define GST_BASE_VIDEO_PARSE_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_BASE_VIDEO_PARSE,GstBaseVideoParseClass))
+#define GST_BASE_VIDEO_PARSE_GET_CLASS(obj) \
+ (G_TYPE_INSTANCE_GET_CLASS((obj),GST_TYPE_BASE_VIDEO_PARSE,GstBaseVideoParseClass))
+#define GST_IS_BASE_VIDEO_PARSE(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_BASE_VIDEO_PARSE))
+#define GST_IS_BASE_VIDEO_PARSE_CLASS(obj) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_BASE_VIDEO_PARSE))
+
+/**
+ * GST_BASE_VIDEO_PARSE_SINK_NAME:
+ *
+ * The name of the templates for the sink pad.
+ */
+#define GST_BASE_VIDEO_PARSE_SINK_NAME "sink"
+/**
+ * GST_BASE_VIDEO_PARSE_SRC_NAME:
+ *
+ * The name of the templates for the source pad.
+ */
+#define GST_BASE_VIDEO_PARSE_SRC_NAME "src"
+
+/**
+ * GST_BASE_VIDEO_PARSE_FLOW_NEED_DATA:
+ *
+ */
+#define GST_BASE_VIDEO_PARSE_FLOW_NEED_DATA GST_FLOW_CUSTOM_SUCCESS
+
+typedef struct _GstBaseVideoParse GstBaseVideoParse;
+typedef struct _GstBaseVideoParseClass GstBaseVideoParseClass;
+
+struct _GstBaseVideoParse
+{
+ GstBaseVideoCodec base_video_codec;
+
+ /*< private >*/
+ GstAdapter *input_adapter;
+ GstAdapter *output_adapter;
+
+ int reorder_depth;
+
+ gboolean have_sync;
+ gboolean discont;
+ gboolean started;
+
+ GstVideoFrame *current_frame;
+ GstVideoState state;
+ int distance_from_sync;
+
+ gboolean sink_clipping;
+
+ guint64 presentation_frame_number;
+ guint64 system_frame_number;
+
+ GstCaps *caps;
+ gboolean set_output_caps;
+
+ GstClockTime last_timestamp;
+
+ gint64 timestamp_offset;
+};
+
+struct _GstBaseVideoParseClass
+{
+ GstBaseVideoCodecClass base_video_codec_class;
+
+ gboolean (*start) (GstBaseVideoParse *parse);
+ gboolean (*stop) (GstBaseVideoParse *parse);
+ gboolean (*reset) (GstBaseVideoParse *parse);
+ GstFlowReturn (*parse_data) (GstBaseVideoParse *parse, gboolean at_eos);
+ int (*scan_for_sync) (GstAdapter *adapter, gboolean at_eos,
+ int offset, int n);
+ GstFlowReturn (*shape_output) (GstBaseVideoParse *parse, GstVideoFrame *frame);
+ GstCaps *(*get_caps) (GstBaseVideoParse *parse);
+
+};
+
+GType gst_base_video_parse_get_type (void);
+
+int gst_base_video_parse_get_width (GstBaseVideoParse *parse);
+int gst_base_video_parse_get_height (GstBaseVideoParse *parse);
+GstVideoState *gst_base_video_parse_get_state (GstBaseVideoParse *parse);
+void gst_base_video_parse_set_state (GstBaseVideoParse *parse,
+ GstVideoState *state);
+
+guint64 gst_base_video_parse_get_timestamp_offset (GstBaseVideoParse *parse);
+
+gboolean gst_base_video_parse_set_src_caps (GstBaseVideoParse *base_video_parse, GstCaps *caps);
+
+GstFlowReturn gst_base_video_parse_end_of_stream (GstBaseVideoParse *base_video_parse,
+ GstBuffer *buffer);
+
+void gst_base_video_parse_lost_sync (GstBaseVideoParse *base_video_parse);
+
+GstVideoFrame * gst_base_video_parse_get_frame (GstBaseVideoParse *base_video_parse);
+void gst_base_video_parse_add_to_frame (GstBaseVideoParse *base_video_parse, int n_bytes);
+GstFlowReturn gst_base_video_parse_finish_frame (GstBaseVideoParse *base_video_parse);
+void gst_base_video_parse_set_sync_point (GstBaseVideoParse *base_video_parse);
+GstFlowReturn gst_base_video_parse_push (GstBaseVideoParse *base_video_parse,
+ GstBuffer *buffer);
+
+G_END_DECLS
+
+#endif
+
--- /dev/null
+/* GStreamer
+ * Copyright (C) 2008 David Schleef <ds@schleef.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "gstbasevideoutils.h"
+
+#include <string.h>
+
+GST_DEBUG_CATEGORY_EXTERN (basevideo_debug);
+#define GST_CAT_DEFAULT basevideo_debug
+
+
+guint64
+gst_base_video_convert_bytes_to_frames (GstVideoState * state, guint64 bytes)
+{
+ return gst_util_uint64_scale_int (bytes, 1, state->bytes_per_picture);
+}
+
+guint64
+gst_base_video_convert_frames_to_bytes (GstVideoState * state, guint64 frames)
+{
+ return frames * state->bytes_per_picture;
+}
+
+
+gboolean
+gst_base_video_rawvideo_convert (GstVideoState * state,
+ GstFormat src_format, gint64 src_value,
+ GstFormat * dest_format, gint64 * dest_value)
+{
+ gboolean res = FALSE;
+
+ if (src_format == *dest_format) {
+ *dest_value = src_value;
+ return TRUE;
+ }
+
+ if (src_format == GST_FORMAT_BYTES &&
+ *dest_format == GST_FORMAT_DEFAULT && state->bytes_per_picture != 0) {
+ /* convert bytes to frames */
+ *dest_value = gst_util_uint64_scale_int (src_value, 1,
+ state->bytes_per_picture);
+ res = TRUE;
+ } else if (src_format == GST_FORMAT_DEFAULT &&
+ *dest_format == GST_FORMAT_BYTES && state->bytes_per_picture != 0) {
+ /* convert bytes to frames */
+ *dest_value = src_value * state->bytes_per_picture;
+ res = TRUE;
+ } else if (src_format == GST_FORMAT_DEFAULT &&
+ *dest_format == GST_FORMAT_TIME && state->fps_n != 0) {
+ /* convert frames to time */
+ /* FIXME add segment time? */
+ *dest_value = gst_util_uint64_scale (src_value,
+ GST_SECOND * state->fps_d, state->fps_n);
+ res = TRUE;
+ } else if (src_format == GST_FORMAT_TIME &&
+ *dest_format == GST_FORMAT_DEFAULT && state->fps_d != 0) {
+ /* convert time to frames */
+ /* FIXME subtract segment time? */
+ *dest_value = gst_util_uint64_scale (src_value, state->fps_n,
+ GST_SECOND * state->fps_d);
+ res = TRUE;
+ }
+
+ /* FIXME add bytes <--> time */
+
+ return res;
+}
+
+gboolean
+gst_base_video_encoded_video_convert (GstVideoState * state,
+ GstFormat src_format, gint64 src_value,
+ GstFormat * dest_format, gint64 * dest_value)
+{
+ gboolean res = FALSE;
+
+ if (src_format == *dest_format) {
+ *dest_value = src_value;
+ return TRUE;
+ }
+
+ GST_DEBUG ("src convert");
+
+#if 0
+ if (src_format == GST_FORMAT_DEFAULT && *dest_format == GST_FORMAT_TIME) {
+ if (dec->fps_d != 0) {
+ *dest_value = gst_util_uint64_scale (granulepos_to_frame (src_value),
+ dec->fps_d * GST_SECOND, dec->fps_n);
+ res = TRUE;
+ } else {
+ res = FALSE;
+ }
+ } else {
+ GST_WARNING ("unhandled conversion from %d to %d", src_format,
+ *dest_format);
+ res = FALSE;
+ }
+#endif
+
+ return res;
+}
+
+gboolean
+gst_base_video_state_from_caps (GstVideoState * state, GstCaps * caps)
+{
+
+ gst_video_format_parse_caps (caps, &state->format,
+ &state->width, &state->height);
+
+ gst_video_parse_caps_framerate (caps, &state->fps_n, &state->fps_d);
+
+ state->par_n = 1;
+ state->par_d = 1;
+ gst_video_parse_caps_pixel_aspect_ratio (caps, &state->par_n, &state->par_d);
+
+ {
+ GstStructure *structure = gst_caps_get_structure (caps, 0);
+ state->interlaced = FALSE;
+ gst_structure_get_boolean (structure, "interlaced", &state->interlaced);
+ }
+
+ state->clean_width = state->width;
+ state->clean_height = state->height;
+ state->clean_offset_left = 0;
+ state->clean_offset_top = 0;
+
+ /* FIXME need better error handling */
+ return TRUE;
+}
+
+GstClockTime
+gst_video_state_get_timestamp (const GstVideoState * state, int frame_number)
+{
+ if (frame_number < 0) {
+ return state->segment.start -
+ (gint64) gst_util_uint64_scale (-frame_number,
+ state->fps_d * GST_SECOND, state->fps_n);
+ } else {
+ return state->segment.start +
+ gst_util_uint64_scale (frame_number,
+ state->fps_d * GST_SECOND, state->fps_n);
+ }
+}
+
+/* gst adapter */
+
+static GSList *
+get_chunk (GstAdapter * adapter, int offset, int *skip)
+{
+ GSList *g;
+
+#if 1
+ if (skip)
+ *skip = 0;
+#endif
+
+ g_return_val_if_fail (offset >= 0, NULL);
+ g_return_val_if_fail (offset < adapter->size, NULL);
+
+ offset += adapter->skip;
+ g = adapter->buflist;
+ while (g) {
+ if (offset < GST_BUFFER_SIZE (GST_BUFFER (g->data))) {
+ if (skip)
+ *skip = offset;
+ return g;
+ }
+ offset -= GST_BUFFER_SIZE (GST_BUFFER (g->data));
+ g = g->next;
+ }
+
+ g_assert_not_reached ();
+}
+
+static int
+scan_fast (guint8 * data, guint32 pattern, guint32 mask, int n)
+{
+ int i;
+
+ pattern &= mask;
+ for (i = 0; i < n; i++) {
+ if ((GST_READ_UINT32_BE (data + i) & mask) == pattern) {
+ return i;
+ }
+ }
+ return n;
+}
+
+static gboolean
+scan_slow (GstAdapter * adapter, GSList * g, int skip, guint32 pattern,
+ guint32 mask)
+{
+ guint8 tmp[4];
+ int j;
+
+ pattern &= mask;
+ for (j = 0; j < 4; j++) {
+ tmp[j] = ((guint8 *) GST_BUFFER_DATA (GST_BUFFER (g->data)))[skip];
+ skip++;
+ if (skip >= GST_BUFFER_SIZE (GST_BUFFER (g->data))) {
+ g = g->next;
+ skip = 0;
+ }
+ }
+
+ return ((GST_READ_UINT32_BE (tmp) & mask) == pattern);
+}
+
+
+int
+gst_adapter_masked_scan_uint32 (GstAdapter * adapter,
+ guint32 pattern, guint32 mask, int offset, int n)
+{
+ GSList *g;
+ int j;
+ int k;
+ int skip;
+ int m;
+
+ g_return_val_if_fail (n >= 0, 0);
+ g_return_val_if_fail (offset >= 0, 0);
+ g_return_val_if_fail (offset + n + 4 <= adapter->size, 0);
+
+ g = get_chunk (adapter, offset, &skip);
+ j = 0;
+ while (j < n) {
+ m = MIN (GST_BUFFER_SIZE (GST_BUFFER (g->data)) - skip - 4, 0);
+ if (m > 0) {
+ k = scan_fast (GST_BUFFER_DATA (GST_BUFFER (g->data)) + skip,
+ pattern, mask, m);
+ if (k < m) {
+ return offset + j + k;
+ }
+ j += m;
+ skip += m;
+ } else {
+ if (scan_slow (adapter, g, skip, pattern, mask)) {
+ return offset + j;
+ }
+ j++;
+ skip++;
+ }
+ if (skip >= GST_BUFFER_SIZE (GST_BUFFER (g->data))) {
+ g = g->next;
+ skip = 0;
+ }
+ }
+
+ return n;
+}
+
+GstBuffer *
+gst_adapter_get_buffer (GstAdapter * adapter)
+{
+ return gst_buffer_ref (GST_BUFFER (adapter->buflist->data));
+
+}
--- /dev/null
+/* GStreamer
+ * Copyright (C) 2008 David Schleef <ds@schleef.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef _GST_BASE_VIDEO_UTILS_H_
+#define _GST_BASE_VIDEO_UTILS_H_
+
+#include <gst/gst.h>
+#include <gst/video/video.h>
+#include <gst/base/gstadapter.h>
+
+G_BEGIN_DECLS
+
+typedef struct _GstVideoState GstVideoState;
+typedef struct _GstVideoFrame GstVideoFrame;
+
+struct _GstVideoState
+{
+ GstVideoFormat format;
+ int width, height;
+ int fps_n, fps_d;
+ int par_n, par_d;
+ gboolean interlaced;
+ gboolean top_field_first;
+
+ int clean_width, clean_height;
+ int clean_offset_left, clean_offset_top;
+
+ int bytes_per_picture;
+
+ GstSegment segment;
+
+ int picture_number;
+};
+
+struct _GstVideoFrame
+{
+ guint64 decode_timestamp;
+ guint64 presentation_timestamp;
+ guint64 presentation_duration;
+
+ gint system_frame_number;
+ gint decode_frame_number;
+ gint presentation_frame_number;
+
+ int distance_from_sync;
+ gboolean is_sync_point;
+ gboolean is_eos;
+
+ GstBuffer *sink_buffer;
+ GstBuffer *src_buffer;
+
+ int field_index;
+ int n_fields;
+
+ void *coder_hook;
+};
+
+gboolean gst_base_video_rawvideo_convert (GstVideoState *state,
+ GstFormat src_format, gint64 src_value,
+ GstFormat * dest_format, gint64 *dest_value);
+gboolean gst_base_video_encoded_video_convert (GstVideoState *state,
+ GstFormat src_format, gint64 src_value,
+ GstFormat * dest_format, gint64 *dest_value);
+
+gboolean gst_base_video_state_from_caps (GstVideoState *state,
+ GstCaps *caps);
+
+GstClockTime gst_video_state_get_timestamp (const GstVideoState *state,
+ int frame_number);
+
+int gst_adapter_masked_scan_uint32 (GstAdapter *adapter,
+ guint32 pattern, guint32 mask, int offset, int n);
+GstBuffer *gst_adapter_get_buffer (GstAdapter *adapter);
+
+G_END_DECLS
+
+#endif
+
projects / platform / upstream / gstreamer.git / commitdiff