--- /dev/null
+/* GStreamer
+ * Copyright (C) 2010 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.
+ */
+/**
+ * SECTION:element-gsty4mdec
+ *
+ * The gsty4mdec element decodes uncompressed video in YUV4MPEG format.
+ *
+ * <refsect2>
+ * <title>Example launch line</title>
+ * |[
+ * gst-launch -v filesrc location=file.y4m ! y4mdec ! xvimagesink
+ * ]|
+ * </refsect2>
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gst/gst.h>
+#include <gst/video/video.h>
+#include "gsty4mdec.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+#define MAX_SIZE 32768
+
+GST_DEBUG_CATEGORY (y4mdec_debug);
+#define GST_CAT_DEFAULT y4mdec_debug
+
+/* prototypes */
+
+
+static void gst_y4m_dec_set_property (GObject * object,
+ guint property_id, const GValue * value, GParamSpec * pspec);
+static void gst_y4m_dec_get_property (GObject * object,
+ guint property_id, GValue * value, GParamSpec * pspec);
+static void gst_y4m_dec_dispose (GObject * object);
+static void gst_y4m_dec_finalize (GObject * object);
+
+static GstFlowReturn gst_y4m_dec_chain (GstPad * pad, GstBuffer * buffer);
+static gboolean gst_y4m_dec_sink_event (GstPad * pad, GstEvent * event);
+
+static gboolean gst_y4m_dec_src_event (GstPad * pad, GstEvent * event);
+static gboolean gst_y4m_dec_src_query (GstPad * pad, GstQuery * query);
+
+static GstStateChangeReturn
+gst_y4m_dec_change_state (GstElement * element, GstStateChange transition);
+
+enum
+{
+ PROP_0
+};
+
+/* pad templates */
+
+static GstStaticPadTemplate gst_y4m_dec_sink_template =
+GST_STATIC_PAD_TEMPLATE ("sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS ("application/x-yuv4mpeg, y4mversion=2")
+ );
+
+static GstStaticPadTemplate gst_y4m_dec_src_template =
+GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("{I420,Y42B,Y444}"))
+ );
+
+/* class initialization */
+
+GST_BOILERPLATE (GstY4mDec, gst_y4m_dec, GstElement, GST_TYPE_ELEMENT);
+
+static void
+gst_y4m_dec_base_init (gpointer g_class)
+{
+ GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
+
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&gst_y4m_dec_src_template));
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&gst_y4m_dec_sink_template));
+
+ gst_element_class_set_details_simple (element_class,
+ "YUV4MPEG demuxer/decoder", "Codec/Demuxer",
+ "Demuxes/decodes YUV4MPEG streams", "David Schleef <ds@schleef.org>");
+}
+
+static void
+gst_y4m_dec_class_init (GstY4mDecClass * klass)
+{
+ GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+ GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
+
+ gobject_class->set_property = gst_y4m_dec_set_property;
+ gobject_class->get_property = gst_y4m_dec_get_property;
+ gobject_class->dispose = gst_y4m_dec_dispose;
+ gobject_class->finalize = gst_y4m_dec_finalize;
+ element_class->change_state = GST_DEBUG_FUNCPTR (gst_y4m_dec_change_state);
+
+}
+
+static void
+gst_y4m_dec_init (GstY4mDec * y4mdec, GstY4mDecClass * y4mdec_class)
+{
+ y4mdec->adapter = gst_adapter_new ();
+
+ y4mdec->sinkpad =
+ gst_pad_new_from_static_template (&gst_y4m_dec_sink_template, "sink");
+ gst_pad_set_event_function (y4mdec->sinkpad,
+ GST_DEBUG_FUNCPTR (gst_y4m_dec_sink_event));
+ gst_pad_set_chain_function (y4mdec->sinkpad,
+ GST_DEBUG_FUNCPTR (gst_y4m_dec_chain));
+ gst_element_add_pad (GST_ELEMENT (y4mdec), y4mdec->sinkpad);
+
+ y4mdec->srcpad = gst_pad_new_from_static_template (&gst_y4m_dec_src_template,
+ "src");
+ gst_pad_set_event_function (y4mdec->srcpad,
+ GST_DEBUG_FUNCPTR (gst_y4m_dec_src_event));
+ gst_pad_set_query_function (y4mdec->srcpad,
+ GST_DEBUG_FUNCPTR (gst_y4m_dec_src_query));
+ gst_pad_use_fixed_caps (y4mdec->srcpad);
+ gst_element_add_pad (GST_ELEMENT (y4mdec), y4mdec->srcpad);
+
+}
+
+void
+gst_y4m_dec_set_property (GObject * object, guint property_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ GstY4mDec *y4mdec;
+
+ g_return_if_fail (GST_IS_Y4M_DEC (object));
+ y4mdec = GST_Y4M_DEC (object);
+
+ switch (property_id) {
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+void
+gst_y4m_dec_get_property (GObject * object, guint property_id,
+ GValue * value, GParamSpec * pspec)
+{
+ GstY4mDec *y4mdec;
+
+ g_return_if_fail (GST_IS_Y4M_DEC (object));
+ y4mdec = GST_Y4M_DEC (object);
+
+ switch (property_id) {
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+void
+gst_y4m_dec_dispose (GObject * object)
+{
+ GstY4mDec *y4mdec;
+
+ g_return_if_fail (GST_IS_Y4M_DEC (object));
+ y4mdec = GST_Y4M_DEC (object);
+
+ /* clean up as possible. may be called multiple times */
+ if (y4mdec->adapter) {
+ g_object_unref (y4mdec->adapter);
+ y4mdec->adapter = NULL;
+ }
+
+ G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+void
+gst_y4m_dec_finalize (GObject * object)
+{
+ GstY4mDec *y4mdec;
+
+ g_return_if_fail (GST_IS_Y4M_DEC (object));
+ y4mdec = GST_Y4M_DEC (object);
+
+ /* clean up object here */
+
+ G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static GstStateChangeReturn
+gst_y4m_dec_change_state (GstElement * element, GstStateChange transition)
+{
+ GstY4mDec *y4mdec;
+ GstStateChangeReturn ret;
+
+ g_return_val_if_fail (GST_IS_Y4M_DEC (element), GST_STATE_CHANGE_FAILURE);
+ y4mdec = GST_Y4M_DEC (element);
+
+ switch (transition) {
+ case GST_STATE_CHANGE_NULL_TO_READY:
+ break;
+ case GST_STATE_CHANGE_READY_TO_PAUSED:
+ 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:
+ break;
+ case GST_STATE_CHANGE_READY_TO_NULL:
+ break;
+ default:
+ break;
+ }
+
+ return ret;
+}
+
+static GstClockTime
+gst_y4m_dec_frames_to_timestamp (GstY4mDec * y4mdec, int frame_index)
+{
+ return gst_util_uint64_scale (frame_index, GST_SECOND * y4mdec->fps_d,
+ y4mdec->fps_n);
+}
+
+static int
+gst_y4m_dec_timestamp_to_frames (GstY4mDec * y4mdec, GstClockTime timestamp)
+{
+ return gst_util_uint64_scale (timestamp, y4mdec->fps_n,
+ GST_SECOND * y4mdec->fps_d);
+}
+
+static int
+gst_y4m_dec_bytes_to_frames (GstY4mDec * y4mdec, gint64 bytes)
+{
+ if (bytes < y4mdec->header_size)
+ return 0;
+ return (bytes - y4mdec->header_size) / (y4mdec->frame_size + 6);
+}
+
+static gint64
+gst_y4m_dec_frames_to_bytes (GstY4mDec * y4mdec, int frame_index)
+{
+ return y4mdec->header_size + (y4mdec->frame_size + 6) * frame_index;
+}
+
+static GstClockTime
+gst_y4m_dec_bytes_to_timestamp (GstY4mDec * y4mdec, gint64 bytes)
+{
+ return gst_y4m_dec_frames_to_timestamp (y4mdec,
+ gst_y4m_dec_bytes_to_frames (y4mdec, bytes));
+}
+
+
+static gboolean
+gst_y4m_dec_parse_header (GstY4mDec * y4mdec, char *header)
+{
+ char *end;
+ int format = -1;
+ int interlaced_char;
+
+ if (memcmp (header, "YUV4MPEG2 ", 10) != 0) {
+ return FALSE;
+ }
+
+ header += 10;
+ while (*header) {
+ GST_DEBUG_OBJECT (y4mdec, "parsing at '%s'", header);
+ switch (*header) {
+ case ' ':
+ header++;
+ break;
+ case 'C':
+ header++;
+ format = strtoul (header, &end, 10);
+ if (end == header)
+ goto error;
+ header = end;
+ break;
+ case 'W':
+ header++;
+ y4mdec->width = strtoul (header, &end, 10);
+ if (end == header)
+ goto error;
+ header = end;
+ break;
+ case 'H':
+ header++;
+ y4mdec->height = strtoul (header, &end, 10);
+ if (end == header)
+ goto error;
+ header = end;
+ break;
+ case 'I':
+ header++;
+ if (header[0] == 0) {
+ GST_WARNING_OBJECT (y4mdec, "Expecting interlaced flag");
+ return FALSE;
+ }
+ interlaced_char = header[0];
+ header++;
+ break;
+ case 'F':
+ header++;
+ y4mdec->fps_n = strtoul (header, &end, 10);
+ if (end == header)
+ goto error;
+ header = end;
+ if (header[0] != ':') {
+ GST_WARNING_OBJECT (y4mdec, "Expecting :");
+ return FALSE;
+ }
+ header++;
+ y4mdec->fps_d = strtoul (header, &end, 10);
+ if (end == header)
+ goto error;
+ header = end;
+ break;
+ case 'A':
+ header++;
+ y4mdec->par_n = strtoul (header, &end, 10);
+ if (end == header)
+ goto error;
+ header = end;
+ if (header[0] != ':') {
+ GST_WARNING_OBJECT (y4mdec, "Expecting :");
+ return FALSE;
+ }
+ header++;
+ y4mdec->par_d = strtoul (header, &end, 10);
+ if (end == header)
+ goto error;
+ header = end;
+ break;
+ default:
+ GST_WARNING_OBJECT (y4mdec, "Unknown y4m header field '%c', ignoring",
+ *header);
+ while (*header && *header != ' ')
+ header++;
+ break;
+ }
+ }
+
+ switch (format) {
+ case 420:
+ y4mdec->format = GST_VIDEO_FORMAT_I420;
+ break;
+ case 422:
+ y4mdec->format = GST_VIDEO_FORMAT_Y42B;
+ break;
+ case 444:
+ y4mdec->format = GST_VIDEO_FORMAT_Y444;
+ break;
+ default:
+ GST_WARNING_OBJECT (y4mdec, "unknown y4m format %d", format);
+ return FALSE;
+ }
+
+ if (y4mdec->width <= 0 || y4mdec->width > MAX_SIZE ||
+ y4mdec->height <= 0 || y4mdec->height > MAX_SIZE) {
+ GST_WARNING_OBJECT (y4mdec, "Dimensions %dx%d out of range",
+ y4mdec->width, y4mdec->height);
+ return FALSE;
+ }
+
+ y4mdec->frame_size = gst_video_format_get_size (y4mdec->format,
+ y4mdec->width, y4mdec->height);
+
+ switch (interlaced_char) {
+ case 0:
+ case '?':
+ case 'p':
+ y4mdec->interlaced = FALSE;
+ break;
+ case 't':
+ case 'b':
+ y4mdec->interlaced = TRUE;
+ y4mdec->tff = (interlaced_char == 't');
+ break;
+ default:
+ GST_WARNING_OBJECT (y4mdec, "Unknown interlaced char '%c'",
+ interlaced_char);
+ return FALSE;
+ break;
+ }
+
+ if (y4mdec->fps_n == 0)
+ y4mdec->fps_n = 1;
+ if (y4mdec->fps_d == 0)
+ y4mdec->fps_d = 1;
+ if (y4mdec->par_n == 0)
+ y4mdec->par_n = 1;
+ if (y4mdec->par_d == 0)
+ y4mdec->par_d = 1;
+
+ return TRUE;
+error:
+ GST_WARNING_OBJECT (y4mdec, "Expecting number y4m header at '%s'", header);
+ return FALSE;
+}
+
+static GstFlowReturn
+gst_y4m_dec_chain (GstPad * pad, GstBuffer * buffer)
+{
+ GstY4mDec *y4mdec;
+ int n_avail;
+ GstFlowReturn flow_ret = GST_FLOW_OK;
+#define MAX_HEADER_LENGTH 80
+ char header[MAX_HEADER_LENGTH];
+ int i;
+ int len;
+
+ y4mdec = GST_Y4M_DEC (gst_pad_get_parent (pad));
+
+ GST_DEBUG_OBJECT (y4mdec, "chain");
+
+ if (GST_BUFFER_IS_DISCONT (buffer)) {
+ GST_DEBUG ("got discont");
+ gst_adapter_clear (y4mdec->adapter);
+ }
+
+ gst_adapter_push (y4mdec->adapter, buffer);
+ n_avail = gst_adapter_available (y4mdec->adapter);
+
+ if (!y4mdec->have_header) {
+ gboolean ret;
+ GstCaps *caps;
+
+ if (n_avail < MAX_HEADER_LENGTH)
+ return GST_FLOW_OK;
+
+ gst_adapter_copy (y4mdec->adapter, (guint8 *) header, 0, MAX_HEADER_LENGTH);
+
+ header[MAX_HEADER_LENGTH - 1] = 0;
+ for (i = 0; i < MAX_HEADER_LENGTH; i++) {
+ if (header[i] == 0x0a)
+ header[i] = 0;
+ }
+
+ ret = gst_y4m_dec_parse_header (y4mdec, header);
+ if (!ret) {
+ GST_ELEMENT_ERROR (y4mdec, STREAM, DECODE,
+ ("Failed to parse YUV4MPEG header"), (NULL));
+ return GST_FLOW_ERROR;
+ }
+
+ y4mdec->header_size = strlen (header) + 1;
+ gst_adapter_flush (y4mdec->adapter, y4mdec->header_size);
+
+ caps = gst_video_format_new_caps_interlaced (y4mdec->format,
+ y4mdec->width, y4mdec->height,
+ y4mdec->fps_n, y4mdec->fps_d,
+ y4mdec->par_n, y4mdec->par_d, y4mdec->interlaced);
+ ret = gst_pad_set_caps (y4mdec->srcpad, caps);
+ gst_caps_unref (caps);
+ if (!ret) {
+ GST_DEBUG_OBJECT (y4mdec, "Couldn't set caps on src pad");
+ return GST_FLOW_ERROR;
+ }
+
+ y4mdec->have_header = TRUE;
+ }
+
+ if (y4mdec->have_new_segment) {
+ GstEvent *event;
+ GstClockTime start = gst_y4m_dec_bytes_to_timestamp (y4mdec,
+ y4mdec->segment_start);
+ GstClockTime stop = gst_y4m_dec_bytes_to_timestamp (y4mdec,
+ y4mdec->segment_stop);
+ GstClockTime position = gst_y4m_dec_bytes_to_timestamp (y4mdec,
+ y4mdec->segment_position);
+
+ event = gst_event_new_new_segment (FALSE, 1.0,
+ GST_FORMAT_TIME, start, stop, position);
+
+ gst_pad_push_event (y4mdec->srcpad, event);
+ //gst_event_unref (event);
+
+ y4mdec->have_new_segment = FALSE;
+ y4mdec->frame_index = gst_y4m_dec_bytes_to_frames (y4mdec,
+ y4mdec->segment_position);
+ GST_DEBUG ("new frame_index %d", y4mdec->frame_index);
+
+ }
+
+ while (1) {
+ n_avail = gst_adapter_available (y4mdec->adapter);
+ if (n_avail < MAX_HEADER_LENGTH)
+ break;
+
+ gst_adapter_copy (y4mdec->adapter, (guint8 *) header, 0, MAX_HEADER_LENGTH);
+ header[MAX_HEADER_LENGTH - 1] = 0;
+ for (i = 0; i < MAX_HEADER_LENGTH; i++) {
+ if (header[i] == 0x0a)
+ header[i] = 0;
+ }
+ if (memcmp (header, "FRAME", 5) != 0) {
+ GST_ELEMENT_ERROR (y4mdec, STREAM, DECODE,
+ ("Failed to parse YUV4MPEG frame"), (NULL));
+ flow_ret = GST_FLOW_ERROR;
+ break;
+ }
+
+ len = strlen (header);
+ if (n_avail < y4mdec->frame_size + len + 1) {
+ /* not enough data */
+ GST_DEBUG ("not enough data for frame %d < %d",
+ n_avail, y4mdec->frame_size + len + 1);
+ break;
+ }
+
+ gst_adapter_flush (y4mdec->adapter, len + 1);
+
+ buffer = gst_adapter_take_buffer (y4mdec->adapter, y4mdec->frame_size);
+
+ GST_BUFFER_CAPS (buffer) = gst_caps_ref (GST_PAD_CAPS (y4mdec->srcpad));
+ GST_BUFFER_TIMESTAMP (buffer) =
+ gst_y4m_dec_frames_to_timestamp (y4mdec, y4mdec->frame_index);
+ GST_BUFFER_DURATION (buffer) =
+ gst_y4m_dec_frames_to_timestamp (y4mdec, y4mdec->frame_index) -
+ GST_BUFFER_TIMESTAMP (buffer);
+ if (y4mdec->interlaced && y4mdec->tff) {
+ GST_BUFFER_FLAG_SET (buffer, GST_VIDEO_BUFFER_TFF);
+ }
+
+ y4mdec->frame_index++;
+
+ flow_ret = gst_pad_push (y4mdec->srcpad, buffer);
+ if (flow_ret != GST_FLOW_OK)
+ break;
+ }
+
+ gst_object_unref (y4mdec);
+ GST_DEBUG ("returning %d", flow_ret);
+ return flow_ret;
+}
+
+static gboolean
+gst_y4m_dec_sink_event (GstPad * pad, GstEvent * event)
+{
+ gboolean res;
+ GstY4mDec *y4mdec;
+
+ y4mdec = GST_Y4M_DEC (gst_pad_get_parent (pad));
+
+ GST_DEBUG_OBJECT (y4mdec, "event");
+
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_FLUSH_START:
+ res = gst_pad_push_event (y4mdec->srcpad, event);
+ break;
+ case GST_EVENT_FLUSH_STOP:
+ res = gst_pad_push_event (y4mdec->srcpad, event);
+ break;
+ case GST_EVENT_NEWSEGMENT:
+ {
+ gboolean update;
+ gdouble rate;
+ gdouble 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);
+
+ GST_DEBUG ("new_segment: update: %d rate: %g applied_rate: %g "
+ "format: %d start: %" G_GUINT64_FORMAT " stop: %" G_GUINT64_FORMAT
+ " position %" G_GUINT64_FORMAT,
+ update, rate, applied_rate, format, start, stop, position);
+
+ if (format == GST_FORMAT_BYTES) {
+ y4mdec->segment_start = start;
+ y4mdec->segment_stop = stop;
+ y4mdec->segment_position = position;
+ y4mdec->have_new_segment = TRUE;
+ }
+
+ res = TRUE;
+ //res = gst_pad_push_event (y4mdec->srcpad, event);
+ }
+ break;
+ case GST_EVENT_EOS:
+ res = gst_pad_push_event (y4mdec->srcpad, event);
+ break;
+ default:
+ res = gst_pad_push_event (y4mdec->srcpad, event);
+ break;
+ }
+
+ gst_object_unref (y4mdec);
+ return res;
+}
+
+static gboolean
+gst_y4m_dec_src_event (GstPad * pad, GstEvent * event)
+{
+ gboolean res;
+ GstY4mDec *y4mdec;
+
+ y4mdec = GST_Y4M_DEC (gst_pad_get_parent (pad));
+
+ GST_DEBUG_OBJECT (y4mdec, "event");
+
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_SEEK:
+ {
+ gdouble rate;
+ GstFormat format;
+ GstSeekFlags flags;
+ GstSeekType start_type, stop_type;
+ gint64 start, stop;
+ int framenum;
+ guint64 byte;
+
+ gst_event_parse_seek (event, &rate, &format, &flags, &start_type,
+ &start, &stop_type, &stop);
+
+ if (format != GST_FORMAT_TIME) {
+ res = FALSE;
+ break;
+ }
+
+ framenum = gst_y4m_dec_timestamp_to_frames (y4mdec, start);
+ GST_DEBUG ("seeking to frame %d", framenum);
+
+ byte = gst_y4m_dec_frames_to_bytes (y4mdec, framenum);
+ GST_DEBUG ("offset %d", (int) byte);
+
+ gst_event_unref (event);
+ event = gst_event_new_seek (rate, GST_FORMAT_BYTES, flags,
+ start_type, byte, stop_type, -1);
+
+ res = gst_pad_push_event (y4mdec->sinkpad, event);
+ }
+ break;
+ default:
+ res = gst_pad_push_event (y4mdec->sinkpad, event);
+ break;
+ }
+
+ gst_object_unref (y4mdec);
+ return res;
+}
+
+static gboolean
+gst_y4m_dec_src_query (GstPad * pad, GstQuery * query)
+{
+ GstY4mDec *y4mdec = GST_Y4M_DEC (gst_pad_get_parent (pad));
+ gboolean res = FALSE;
+
+ switch (GST_QUERY_TYPE (query)) {
+ case GST_QUERY_DURATION:
+ {
+ GstFormat format;
+ GstPad *peer;
+
+ GST_DEBUG ("duration query");
+
+ gst_query_parse_duration (query, &format, NULL);
+
+ if (format != GST_FORMAT_TIME) {
+ res = FALSE;
+ GST_DEBUG_OBJECT (y4mdec, "not handling duration query in format %d",
+ format);
+ break;
+ }
+
+ peer = gst_pad_get_peer (y4mdec->sinkpad);
+ if (peer) {
+ GstQuery *peer_query = gst_query_new_duration (GST_FORMAT_BYTES);
+
+ res = gst_pad_query (peer, peer_query);
+ if (res) {
+ gint64 duration;
+ int n_frames;
+
+ gst_query_parse_duration (peer_query, &format, &duration);
+
+ n_frames = gst_y4m_dec_bytes_to_frames (y4mdec, duration);
+ GST_DEBUG ("duration in frames %d", n_frames);
+
+ duration = gst_y4m_dec_frames_to_timestamp (y4mdec, n_frames);
+ GST_DEBUG ("duration in time %" GST_TIME_FORMAT,
+ GST_TIME_ARGS (duration));
+
+ gst_query_set_duration (query, GST_FORMAT_TIME, duration);
+ res = TRUE;
+ }
+
+ gst_query_unref (peer_query);
+ gst_object_unref (peer);
+ }
+ break;
+ }
+ default:
+ res = gst_pad_query_default (pad, query);
+ break;
+ }
+
+ gst_object_unref (y4mdec);
+ return res;
+}
+
+
+static gboolean
+plugin_init (GstPlugin * plugin)
+{
+
+ gst_element_register (plugin, "y4mdec", GST_RANK_SECONDARY,
+ gst_y4m_dec_get_type ());
+
+ GST_DEBUG_CATEGORY_INIT (y4mdec_debug, "y4mdec", 0, "y4mdec element");
+
+ return TRUE;
+}
+
+
+GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
+ GST_VERSION_MINOR,
+ "y4mdec",
+ "FIXME", plugin_init, VERSION, "LGPL", PACKAGE_NAME, GST_PACKAGE_ORIGIN)
projects / platform / upstream / gst-plugins-bad.git / commitdiff