gstreamer/gst-libs/gst/video/gstbasevideocodec.c

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/* 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 GstStateChangeReturn gst_base_video_codec_change_state (GstElement *
element, GstStateChange transition);
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_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_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, &timestamp);
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);
}