/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ * Copyright (C) <2006> Mark Nauwelaerts <mnauw@skynet.be>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* Boston, MA 02111-1307, USA.
*/
+/* see mjpegtools/yuv4mpeg.h for yuv4mpeg format */
+
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
-#include <math.h>
#include <gst/gst.h>
#include <gst/video/video.h>
#include "gsty4mencode.h"
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
- GST_STATIC_CAPS ("application/x-yuv4mpeg, " "y4mversion = (int) 1")
+ GST_STATIC_CAPS ("application/x-yuv4mpeg, " "y4mversion = (int) 2")
);
static GstStaticPadTemplate y4mencode_sink_factory =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
- GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420"))
+ GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("{ IYUV, I420 }"))
);
-static void gst_y4mencode_base_init (gpointer g_class);
-static void gst_y4mencode_class_init (GstY4mEncodeClass * klass);
-static void gst_y4mencode_init (GstY4mEncode * filter);
-static void gst_y4mencode_set_property (GObject * object,
+static void gst_y4m_encode_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
-static void gst_y4mencode_get_property (GObject * object,
+static void gst_y4m_encode_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
-static void gst_y4mencode_chain (GstPad * pad, GstData * _data);
-static GstStateChangeReturn gst_y4mencode_change_state (GstElement * element,
- GstStateChange transition);
-
-
-static GstElementClass *parent_class = NULL;
+static void gst_y4m_encode_reset (GstY4mEncode * filter);
-/*static guint gst_filter_signals[LAST_SIGNAL] = { 0 }; */
+static gboolean gst_y4m_encode_setcaps (GstPad * pad, GstCaps * vscaps);
+static GstFlowReturn gst_y4m_encode_chain (GstPad * pad, GstBuffer * buf);
+static GstStateChangeReturn gst_y4m_encode_change_state (GstElement * element,
+ GstStateChange transition);
-GType
-gst_y4mencode_get_type (void)
-{
- static GType y4mencode_type = 0;
-
- if (!y4mencode_type) {
- static const GTypeInfo y4mencode_info = {
- sizeof (GstY4mEncodeClass),
- gst_y4mencode_base_init,
- NULL,
- (GClassInitFunc) gst_y4mencode_class_init,
- NULL,
- NULL,
- sizeof (GstY4mEncode),
- 0,
- (GInstanceInitFunc) gst_y4mencode_init,
- };
-
- y4mencode_type = g_type_register_static (GST_TYPE_ELEMENT,
- "GstY4mEncode", &y4mencode_info, 0);
- }
- return y4mencode_type;
-}
+GST_BOILERPLATE (GstY4mEncode, gst_y4m_encode, GstElement, GST_TYPE_ELEMENT);
static void
-gst_y4mencode_base_init (gpointer g_class)
+gst_y4m_encode_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_static_pad_template_get (&y4mencode_sink_factory));
gst_element_class_set_details (element_class, &y4mencode_details);
}
+
static void
-gst_y4mencode_class_init (GstY4mEncodeClass * klass)
+gst_y4m_encode_class_init (GstY4mEncodeClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
- parent_class = g_type_class_peek_parent (klass);
+ gstelement_class->change_state =
+ GST_DEBUG_FUNCPTR (gst_y4m_encode_change_state);
- gstelement_class->change_state = gst_y4mencode_change_state;
-
- gobject_class->set_property = gst_y4mencode_set_property;
- gobject_class->get_property = gst_y4mencode_get_property;
-}
-
-static GstPadLinkReturn
-gst_y4mencode_sinkconnect (GstPad * pad, const GstCaps * caps)
-{
- GstY4mEncode *filter;
- gint idx = -1, i;
- gdouble fps;
- gdouble framerates[] = {
- 00.000,
- 24000 / 1001., 24.000, /* 24fps movie */
- 25.000, /* PAL */
- 30000 / 1001., 30.000, /* NTSC */
- 50.000,
- 60000 / 1001., 60.000
- };
- GstStructure *structure;
-
- filter = GST_Y4MENCODE (gst_pad_get_parent (pad));
-
- structure = gst_caps_get_structure (caps, 0);
-
- if (!gst_structure_get_int (structure, "width", &filter->width) ||
- !gst_structure_get_int (structure, "height", &filter->height) ||
- !gst_structure_get_double (structure, "framerate", &fps))
- return GST_PAD_LINK_REFUSED;
-
- /* find fps idx */
- idx = 0;
- for (i = 1; i < 9; i++) {
- gdouble old_diff = fabs (framerates[idx] - fps),
- new_diff = fabs (framerates[i] - fps);
-
- if (new_diff < old_diff) {
- idx = i;
- }
- }
- filter->fps_idx = idx;
-
- return GST_PAD_LINK_OK;
+ gobject_class->set_property = gst_y4m_encode_set_property;
+ gobject_class->get_property = gst_y4m_encode_get_property;
}
static void
-gst_y4mencode_init (GstY4mEncode * filter)
+gst_y4m_encode_init (GstY4mEncode * filter, GstY4mEncodeClass * klass)
{
filter->sinkpad =
gst_pad_new_from_template (gst_static_pad_template_get
(&y4mencode_sink_factory), "sink");
gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad);
- gst_pad_set_chain_function (filter->sinkpad, gst_y4mencode_chain);
- gst_pad_set_link_function (filter->sinkpad, gst_y4mencode_sinkconnect);
+ gst_pad_set_chain_function (filter->sinkpad,
+ GST_DEBUG_FUNCPTR (gst_y4m_encode_chain));
+ gst_pad_set_setcaps_function (filter->sinkpad,
+ GST_DEBUG_FUNCPTR (gst_y4m_encode_setcaps));
filter->srcpad =
gst_pad_new_from_template (gst_static_pad_template_get
(&y4mencode_src_factory), "src");
gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad);
+ gst_pad_use_fixed_caps (filter->srcpad);
- filter->init = TRUE;
+ /* init properties */
+ gst_y4m_encode_reset (filter);
}
static void
-gst_y4mencode_chain (GstPad * pad, GstData * _data)
+gst_y4m_encode_reset (GstY4mEncode * filter)
+{
+ filter->width = filter->height = -1;
+ filter->fps_num = filter->fps_den = 1;
+ filter->par_num = filter->par_den = 1;
+}
+
+static gboolean
+gst_y4m_encode_setcaps (GstPad * pad, GstCaps * vscaps)
{
- GstBuffer *buf = GST_BUFFER (_data);
GstY4mEncode *filter;
- GstBuffer *outbuf;
- gchar *header;
- gint len;
+ GstStructure *structure;
+ gint w, h;
+ const GValue *fps, *par;
+
+ filter = GST_Y4M_ENCODE (GST_PAD_PARENT (pad));
+
+ structure = gst_caps_get_structure (vscaps, 0);
+
+ g_return_val_if_fail (gst_structure_get_int (structure, "width", &w), FALSE);
+ g_return_val_if_fail (gst_structure_get_int (structure, "height", &h), FALSE);
+ fps = gst_structure_get_value (structure, "framerate");
+ g_return_val_if_fail (w > 0 && h > 0
+ && fps != NULL && GST_VALUE_HOLDS_FRACTION (fps), FALSE);
+ /* optional par info */
+ par = gst_structure_get_value (structure, "pixel-aspect-ratio");
+
+ filter->width = w;
+ filter->height = h;
+ filter->fps_num = gst_value_get_fraction_numerator (fps);
+ filter->fps_den = gst_value_get_fraction_denominator (fps);
+ if ((par != NULL) && GST_VALUE_HOLDS_FRACTION (par)) {
+ filter->par_num = gst_value_get_fraction_numerator (par);
+ filter->par_den = gst_value_get_fraction_denominator (par);
+ } else { /* indicates unknown */
+ filter->par_num = 0;
+ filter->par_den = 0;
+ }
- g_return_if_fail (pad != NULL);
- g_return_if_fail (GST_IS_PAD (pad));
- g_return_if_fail (buf != NULL);
+ /* the template caps will do for the src pad, should always accept */
+ return gst_pad_set_caps (filter->srcpad,
+ gst_caps_copy (gst_pad_get_pad_template_caps (filter->srcpad)));
+}
- filter = GST_Y4MENCODE (gst_pad_get_parent (pad));
- g_return_if_fail (filter != NULL);
- g_return_if_fail (GST_IS_Y4MENCODE (filter));
+static inline GstBuffer *
+gst_y4m_encode_get_stream_header (GstY4mEncode * filter)
+{
+ gpointer header;
+ GstBuffer *buf;
- outbuf = gst_buffer_new ();
- GST_BUFFER_DATA (outbuf) = g_malloc (GST_BUFFER_SIZE (buf) + 256);
+ header = g_strdup_printf ("YUV4MPEG2 W%d H%d I? F%d:%d A%d:%d\n",
+ filter->width, filter->height,
+ filter->fps_num, filter->fps_den, filter->par_num, filter->par_den);
- if (filter->init) {
- header = "YUV4MPEG W%d H%d I? %d\nFRAME\n";
- filter->init = FALSE;
- } else {
- header = "FRAME\n";
- }
+ buf = gst_buffer_new ();
+ gst_buffer_set_data (buf, header, strlen (header));
+ /* so it gets free'd when needed */
+ GST_BUFFER_MALLOCDATA (buf) = header;
+
+ return buf;
+}
- snprintf (GST_BUFFER_DATA (outbuf), 255, header,
- filter->width, filter->height, filter->fps_idx);
- len = strlen (GST_BUFFER_DATA (outbuf));
+static inline GstBuffer *
+gst_y4m_encode_get_frame_header (GstY4mEncode * filter)
+{
+ gpointer header;
+ GstBuffer *buf;
- memcpy (GST_BUFFER_DATA (outbuf) + len, GST_BUFFER_DATA (buf),
- GST_BUFFER_SIZE (buf));
- GST_BUFFER_SIZE (outbuf) = GST_BUFFER_SIZE (buf) + len;
+ header = g_strdup_printf ("FRAME\n");
- gst_buffer_unref (buf);
+ buf = gst_buffer_new ();
+ gst_buffer_set_data (buf, header, strlen (header));
+ /* so it gets free'd when needed */
+ GST_BUFFER_MALLOCDATA (buf) = header;
- gst_pad_push (filter->srcpad, GST_DATA (outbuf));
+ return buf;
+}
+
+static GstFlowReturn
+gst_y4m_encode_chain (GstPad * pad, GstBuffer * buf)
+{
+ GstY4mEncode *filter = GST_Y4M_ENCODE (GST_PAD_PARENT (pad));
+ GstBuffer *outbuf;
+
+ /* check we got some decent info from caps */
+ if (filter->width < 0) {
+ GST_ELEMENT_ERROR ("filter", CORE, NEGOTIATION, (NULL),
+ ("format wasn't negotiated before chain function"));
+ gst_buffer_unref (buf);
+ return GST_FLOW_NOT_NEGOTIATED;
+ }
+
+ if (G_UNLIKELY (!filter->header)) {
+ outbuf = gst_y4m_encode_get_stream_header (filter);
+ filter->header = TRUE;
+ outbuf = gst_buffer_join (outbuf, gst_y4m_encode_get_frame_header (filter));
+ } else {
+ outbuf = gst_y4m_encode_get_frame_header (filter);
+ }
+ /* join with data */
+ outbuf = gst_buffer_join (outbuf, buf);
+ /* decorate */
+ gst_buffer_make_metadata_writable (outbuf);
+ gst_buffer_set_caps (outbuf, GST_PAD_CAPS (filter->srcpad));
+ /* strip to avoid sink dropping on time-base, decorate and send */
+ GST_BUFFER_TIMESTAMP (outbuf) = GST_CLOCK_TIME_NONE;
+ return gst_pad_push (filter->srcpad, outbuf);
}
static void
-gst_y4mencode_set_property (GObject * object, guint prop_id,
+gst_y4m_encode_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstY4mEncode *filter;
- g_return_if_fail (GST_IS_Y4MENCODE (object));
- filter = GST_Y4MENCODE (object);
+ g_return_if_fail (GST_IS_Y4M_ENCODE (object));
+ filter = GST_Y4M_ENCODE (object);
switch (prop_id) {
default:
}
static void
-gst_y4mencode_get_property (GObject * object, guint prop_id, GValue * value,
+gst_y4m_encode_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstY4mEncode *filter;
- g_return_if_fail (GST_IS_Y4MENCODE (object));
- filter = GST_Y4MENCODE (object);
+ g_return_if_fail (GST_IS_Y4M_ENCODE (object));
+ filter = GST_Y4M_ENCODE (object);
switch (prop_id) {
default:
}
static GstStateChangeReturn
-gst_y4mencode_change_state (GstElement * element, GstStateChange transition)
+gst_y4m_encode_change_state (GstElement * element, GstStateChange transition)
{
- GstY4mEncode *filter;
+ GstY4mEncode *filter = GST_Y4M_ENCODE (element);
+ GstStateChangeReturn ret;
- g_return_val_if_fail (GST_IS_Y4MENCODE (element), GST_STATE_CHANGE_FAILURE);
+ switch (transition) {
+ case GST_STATE_CHANGE_NULL_TO_READY:
+ case GST_STATE_CHANGE_READY_TO_PAUSED:
+ break;
+ default:
+ break;
+ }
- filter = GST_Y4MENCODE (element);
+ ret = GST_CALL_PARENT_WITH_DEFAULT (GST_ELEMENT_CLASS, change_state,
+ (element, transition), GST_STATE_CHANGE_SUCCESS);
+ if (ret != GST_STATE_CHANGE_SUCCESS)
+ return ret;
- if (transition == GST_STATE_CHANGE_NULL_TO_READY) {
- filter->init = TRUE;
+ switch (transition) {
+ case GST_STATE_CHANGE_PAUSED_TO_READY:
+ gst_y4m_encode_reset (filter);
+ break;
+ default:
+ break;
}
- if (GST_ELEMENT_CLASS (parent_class)->change_state)
- return GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
-
return GST_STATE_CHANGE_SUCCESS;
}
plugin_init (GstPlugin * plugin)
{
return gst_element_register (plugin, "y4menc", GST_RANK_NONE,
- GST_TYPE_Y4MENCODE);
+ GST_TYPE_Y4M_ENCODE);
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
projects / platform / upstream / gstreamer.git / commitdiff