static gboolean
gst_base_video_encoder_sink_setcaps (GstPad * pad, GstCaps * caps)
{
GstBaseVideoEncoder *base_video_encoder;
GstBaseVideoEncoderClass *base_video_encoder_class;
gboolean ret;
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);
ret = base_video_encoder_class->set_format (base_video_encoder,
&base_video_encoder->state);
if (ret) {
ret = base_video_encoder_class->start (base_video_encoder);
}
g_object_unref (base_video_encoder);
return ret;
}
static void
gst_base_video_encoder_finalize (GObject * object)
{
GstBaseVideoEncoder *base_video_encoder;
GstBaseVideoEncoderClass *base_video_encoder_class;
GList *g;
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");
for (g = base_video_encoder->frames; g; g = g_list_next (g)) {
gst_base_video_codec_free_frame ((GstVideoFrame *) g->data);
}
g_list_free (base_video_encoder->frames);
if (base_video_encoder->caps) {
gst_caps_unref (base_video_encoder->caps);
base_video_encoder->caps = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
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;
}
static gboolean
gst_base_video_encoder_sink_setcaps (GstPad * pad, GstCaps * caps)
{
GstBaseVideoEncoder *base_video_encoder;
GstBaseVideoEncoderClass *base_video_encoder_class;
GstStructure *structure;
GstVideoState *state;
gboolean ret;
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");
state = &GST_BASE_VIDEO_CODEC (base_video_encoder)->state;
structure = gst_caps_get_structure (caps, 0);
gst_video_format_parse_caps (caps, &state->format,
&state->width, &state->height);
state->fps_n = 0;
state->fps_d = 1;
gst_video_parse_caps_framerate (caps, &state->fps_n, &state->fps_d);
if (state->fps_d == 0) {
state->fps_n = 0;
state->fps_d = 1;
}
state->par_n = 1;
state->par_d = 1;
gst_video_parse_caps_pixel_aspect_ratio (caps, &state->par_n, &state->par_d);
state->have_interlaced = 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;
ret = base_video_encoder_class->set_format (base_video_encoder,
&GST_BASE_VIDEO_CODEC (base_video_encoder)->state);
if (ret) {
ret = base_video_encoder_class->start (base_video_encoder);
}
g_object_unref (base_video_encoder);
return ret;
}
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->a.at_eos) {
return GST_FLOW_UNEXPECTED;
}
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 (&GST_BASE_VIDEO_CODEC (base_video_encoder)->segment,
GST_FORMAT_TIME, start, stop, &clip_start, &clip_stop)) {
GST_DEBUG ("clipping to segment dropped frame");
goto done;
}
}
frame =
gst_base_video_codec_new_frame (GST_BASE_VIDEO_CODEC
(base_video_encoder));
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++;
GST_BASE_VIDEO_CODEC (base_video_encoder)->frames =
g_list_append (GST_BASE_VIDEO_CODEC (base_video_encoder)->frames, frame);
klass->handle_frame (base_video_encoder, frame);
done:
g_object_unref (base_video_encoder);
return GST_FLOW_OK;
}
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 *enc;
GstBaseVideoEncoderClass *klass;
gboolean handled = FALSE;
gboolean ret = TRUE;
enc = GST_BASE_VIDEO_ENCODER (gst_pad_get_parent (pad));
klass = GST_BASE_VIDEO_ENCODER_GET_CLASS (enc);
GST_DEBUG_OBJECT (enc, "received event %d, %s", GST_EVENT_TYPE (event),
GST_EVENT_TYPE_NAME (event));
if (klass->event)
handled = klass->event (enc, event);
if (!handled)
handled = gst_base_video_encoder_sink_eventfunc (enc, event);
if (!handled) {
/* Forward non-serialized events and EOS/FLUSH_STOP immediately.
* For EOS this is required because no buffer or serialized event
* will come after EOS and nothing could trigger another
* _finish_frame() call. *
* If the subclass handles sending of EOS manually it can return
* _DROPPED from ::finish() and all other subclasses should have
* decoded/flushed all remaining data before this
*
* For FLUSH_STOP this is required because it is expected
* to be forwarded immediately and no buffers are queued anyway.
*/
if (!GST_EVENT_IS_SERIALIZED (event)
|| GST_EVENT_TYPE (event) == GST_EVENT_EOS
|| GST_EVENT_TYPE (event) == GST_EVENT_FLUSH_STOP) {
ret = gst_pad_push_event (enc->base_video_codec.srcpad, event);
} else {
GST_BASE_VIDEO_CODEC_STREAM_LOCK (enc);
enc->current_frame_events =
g_list_prepend (enc->current_frame_events, event);
GST_BASE_VIDEO_CODEC_STREAM_UNLOCK (enc);
}
}
GST_DEBUG_OBJECT (enc, "event handled");
gst_object_unref (enc);
return ret;
}
static gboolean
gst_base_video_encoder_src_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_CUSTOM_UPSTREAM:
{
const GstStructure *s;
s = gst_event_get_structure (event);
if (gst_structure_has_name (s, "GstForceKeyUnit")) {
GST_OBJECT_LOCK (base_video_encoder);
base_video_encoder->force_keyframe = TRUE;
GST_OBJECT_UNLOCK (base_video_encoder);
gst_event_unref (event);
ret = TRUE;
} else {
ret =
gst_pad_push_event (GST_BASE_VIDEO_CODEC_SINK_PAD
(base_video_encoder), event);
}
break;
}
default:
ret =
gst_pad_push_event (GST_BASE_VIDEO_CODEC_SINK_PAD
(base_video_encoder), event);
break;
}
gst_object_unref (base_video_encoder);
return ret;
}
static gboolean
gst_base_video_encoder_drain (GstBaseVideoEncoder * enc)
{
GstBaseVideoCodec *codec;
GstBaseVideoEncoderClass *enc_class;
gboolean ret = TRUE;
codec = GST_BASE_VIDEO_CODEC (enc);
enc_class = GST_BASE_VIDEO_ENCODER_GET_CLASS (enc);
GST_DEBUG_OBJECT (enc, "draining");
if (enc->drained) {
GST_DEBUG_OBJECT (enc, "already drained");
return TRUE;
}
if (enc_class->reset) {
GST_DEBUG_OBJECT (enc, "requesting subclass to finish");
ret = enc_class->reset (enc);
}
/* everything should be away now */
if (codec->frames) {
/* not fatal/impossible though if subclass/codec eats stuff */
GST_WARNING_OBJECT (enc, "still %d frames left after draining",
g_list_length (codec->frames));
#if 0
/* FIXME should do this, but subclass may come up with it later on ?
* and would then need refcounting or so on frames */
g_list_foreach (codec->frames,
(GFunc) gst_base_video_codec_free_frame, NULL);
#endif
}
return ret;
}
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:
{
if (base_video_encoder_class->finish) {
base_video_encoder_class->finish (base_video_encoder);
}
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->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;
}
}
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 =
GST_BASE_VIDEO_CODEC (base_video_encoder)->system_frame_number;
GST_BASE_VIDEO_CODEC (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 * GST_BASE_VIDEO_CODEC (base_video_encoder)->state.fps_d,
GST_BASE_VIDEO_CODEC (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;
GST_BASE_VIDEO_CODEC (base_video_encoder)->frames =
g_list_remove (GST_BASE_VIDEO_CODEC (base_video_encoder)->frames, frame);
if (!base_video_encoder->set_output_caps) {
if (base_video_encoder_class->get_caps) {
GST_BASE_VIDEO_CODEC (base_video_encoder)->caps =
base_video_encoder_class->get_caps (base_video_encoder);
} else {
GST_BASE_VIDEO_CODEC (base_video_encoder)->caps =
gst_caps_new_simple ("video/unknown", NULL);
}
gst_pad_set_caps (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_encoder),
GST_BASE_VIDEO_CODEC (base_video_encoder)->caps);
base_video_encoder->set_output_caps = TRUE;
}
gst_buffer_set_caps (GST_BUFFER (frame->src_buffer),
GST_BASE_VIDEO_CODEC (base_video_encoder)->caps);
if (frame->force_keyframe) {
GstClockTime stream_time;
GstClockTime running_time;
GstStructure *s;
running_time =
gst_segment_to_running_time (&GST_BASE_VIDEO_CODEC
(base_video_encoder)->segment, GST_FORMAT_TIME,
frame->presentation_timestamp);
stream_time =
gst_segment_to_stream_time (&GST_BASE_VIDEO_CODEC
(base_video_encoder)->segment, GST_FORMAT_TIME,
frame->presentation_timestamp);
/* FIXME this should send the event that we got on the sink pad
instead of creating a new one */
s = gst_structure_new ("GstForceKeyUnit",
"timestamp", G_TYPE_UINT64, frame->presentation_timestamp,
"stream-time", G_TYPE_UINT64, stream_time,
"running-time", G_TYPE_UINT64, running_time, NULL);
gst_pad_push_event (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_encoder),
gst_event_new_custom (GST_EVENT_CUSTOM_DOWNSTREAM, s));
}
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);
}
gst_base_video_codec_free_frame (frame);
return ret;
}
static gboolean
gst_base_video_encoder_sink_setcaps (GstPad * pad, GstCaps * caps)
{
GstBaseVideoEncoder *base_video_encoder;
GstBaseVideoEncoderClass *base_video_encoder_class;
GstStructure *structure;
GstVideoState *state, tmp_state;
gboolean ret;
gboolean changed = 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);
/* subclass should do something here ... */
g_return_val_if_fail (base_video_encoder_class->set_format != NULL, FALSE);
GST_DEBUG_OBJECT (base_video_encoder, "setcaps %" GST_PTR_FORMAT, caps);
GST_BASE_VIDEO_CODEC_STREAM_LOCK (base_video_encoder);
state = &GST_BASE_VIDEO_CODEC (base_video_encoder)->state;
memset (&tmp_state, 0, sizeof (tmp_state));
tmp_state.caps = gst_caps_ref (caps);
structure = gst_caps_get_structure (caps, 0);
ret =
gst_video_format_parse_caps (caps, &tmp_state.format, &tmp_state.width,
&tmp_state.height);
if (!ret)
goto exit;
changed = (tmp_state.format != state->format
|| tmp_state.width != state->width || tmp_state.height != state->height);
if (!gst_video_parse_caps_framerate (caps, &tmp_state.fps_n,
&tmp_state.fps_d)) {
tmp_state.fps_n = 0;
tmp_state.fps_d = 1;
}
changed = changed || (tmp_state.fps_n != state->fps_n
|| tmp_state.fps_d != state->fps_d);
if (!gst_video_parse_caps_pixel_aspect_ratio (caps, &tmp_state.par_n,
&tmp_state.par_d)) {
tmp_state.par_n = 1;
tmp_state.par_d = 1;
}
changed = changed || (tmp_state.par_n != state->par_n
|| tmp_state.par_d != state->par_d);
tmp_state.have_interlaced =
gst_structure_get_boolean (structure, "interlaced",
&tmp_state.interlaced);
changed = changed || (tmp_state.have_interlaced != state->have_interlaced
|| tmp_state.interlaced != state->interlaced);
tmp_state.bytes_per_picture =
gst_video_format_get_size (tmp_state.format, tmp_state.width,
tmp_state.height);
tmp_state.clean_width = tmp_state.width;
tmp_state.clean_height = tmp_state.height;
tmp_state.clean_offset_left = 0;
tmp_state.clean_offset_top = 0;
if (changed) {
/* arrange draining pending frames */
gst_base_video_encoder_drain (base_video_encoder);
/* and subclass should be ready to configure format at any time around */
if (base_video_encoder_class->set_format)
ret =
base_video_encoder_class->set_format (base_video_encoder, &tmp_state);
if (ret) {
gst_caps_replace (&state->caps, NULL);
*state = tmp_state;
}
} else {
/* no need to stir things up */
GST_DEBUG_OBJECT (base_video_encoder,
"new video format identical to configured format");
gst_caps_unref (tmp_state.caps);
ret = TRUE;
}
exit:
GST_BASE_VIDEO_CODEC_STREAM_UNLOCK (base_video_encoder);
if (!ret) {
GST_WARNING_OBJECT (base_video_encoder, "rejected caps %" GST_PTR_FORMAT,
caps);
}
g_object_unref (base_video_encoder);
return ret;
}
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:
{
if (base_video_encoder_class->finish) {
base_video_encoder_class->finish (base_video_encoder);
}
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 %" GST_TIME_FORMAT " %" GST_TIME_FORMAT,
GST_TIME_ARGS (start), GST_TIME_ARGS (position));
gst_segment_set_newsegment_full (&GST_BASE_VIDEO_CODEC
(base_video_encoder)->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;
case GST_EVENT_CUSTOM_DOWNSTREAM:
{
const GstStructure *s;
s = gst_event_get_structure (event);
if (gst_structure_has_name (s, "GstForceKeyUnit")) {
GST_OBJECT_LOCK (base_video_encoder);
base_video_encoder->force_keyframe = TRUE;
GST_OBJECT_UNLOCK (base_video_encoder);
gst_event_unref (event);
ret = GST_FLOW_OK;
} else {
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 gboolean
gst_base_video_encoder_sink_eventfunc (GstBaseVideoEncoder * base_video_encoder,
GstEvent * event)
{
GstBaseVideoEncoderClass *base_video_encoder_class;
gboolean ret = FALSE;
base_video_encoder_class =
GST_BASE_VIDEO_ENCODER_GET_CLASS (base_video_encoder);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_EOS:
{
GstFlowReturn flow_ret;
GST_BASE_VIDEO_CODEC_STREAM_LOCK (base_video_encoder);
base_video_encoder->a.at_eos = TRUE;
if (base_video_encoder_class->finish) {
flow_ret = base_video_encoder_class->finish (base_video_encoder);
} else {
flow_ret = GST_FLOW_OK;
}
ret = (flow_ret == GST_BASE_VIDEO_ENCODER_FLOW_DROPPED);
GST_BASE_VIDEO_CODEC_STREAM_UNLOCK (base_video_encoder);
break;
}
case GST_EVENT_NEWSEGMENT:
{
gboolean update;
double rate;
double applied_rate;
GstFormat format;
gint64 start;
gint64 stop;
gint64 position;
GST_BASE_VIDEO_CODEC_STREAM_LOCK (base_video_encoder);
gst_event_parse_new_segment_full (event, &update, &rate, &applied_rate,
&format, &start, &stop, &position);
GST_DEBUG_OBJECT (base_video_encoder, "newseg rate %g, applied rate %g, "
"format %d, start = %" GST_TIME_FORMAT ", stop = %" GST_TIME_FORMAT
", pos = %" GST_TIME_FORMAT, rate, applied_rate, format,
GST_TIME_ARGS (start), GST_TIME_ARGS (stop),
GST_TIME_ARGS (position));
if (format != GST_FORMAT_TIME) {
GST_DEBUG_OBJECT (base_video_encoder, "received non TIME newsegment");
GST_BASE_VIDEO_CODEC_STREAM_UNLOCK (base_video_encoder);
break;
}
base_video_encoder->a.at_eos = FALSE;
gst_segment_set_newsegment_full (&GST_BASE_VIDEO_CODEC
(base_video_encoder)->segment, update, rate, applied_rate, format,
start, stop, position);
GST_BASE_VIDEO_CODEC_STREAM_UNLOCK (base_video_encoder);
break;
}
case GST_EVENT_CUSTOM_DOWNSTREAM:
{
const GstStructure *s;
s = gst_event_get_structure (event);
if (gst_structure_has_name (s, "GstForceKeyUnit")) {
GST_OBJECT_LOCK (base_video_encoder);
base_video_encoder->force_keyframe = TRUE;
if (base_video_encoder->force_keyunit_event)
gst_event_unref (base_video_encoder->force_keyunit_event);
base_video_encoder->force_keyunit_event = gst_event_copy (event);
GST_OBJECT_UNLOCK (base_video_encoder);
gst_event_unref (event);
ret = TRUE;
}
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) {
if (base_video_encoder_class->get_caps) {
base_video_encoder->caps =
base_video_encoder_class->get_caps (base_video_encoder);
} else {
base_video_encoder->caps = gst_caps_new_simple ("video/unknown", NULL);
}
gst_pad_set_caps (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_encoder),
base_video_encoder->caps);
base_video_encoder->set_output_caps = TRUE;
}
gst_buffer_set_caps (GST_BUFFER (frame->src_buffer),
base_video_encoder->caps);
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);
}
gst_base_video_codec_free_frame (frame);
return ret;
}
/**
* gst_base_video_encoder_finish_frame:
* @base_video_encoder: a #GstBaseVideoEncoder
* @frame: an encoded #GstVideoFrame
*
* @frame must have a valid encoded data buffer, whose metadata fields
* are then appropriately set according to frame data or no buffer at
* all if the frame should be dropped.
* It is subsequently pushed downstream or provided to @shape_output.
* In any case, the frame is considered finished and released.
*
* Returns: a #GstFlowReturn resulting from sending data downstream
*/
GstFlowReturn
gst_base_video_encoder_finish_frame (GstBaseVideoEncoder * base_video_encoder,
GstVideoFrame * frame)
{
GstFlowReturn ret = GST_FLOW_OK;
GstBaseVideoEncoderClass *base_video_encoder_class;
GList *l;
base_video_encoder_class =
GST_BASE_VIDEO_ENCODER_GET_CLASS (base_video_encoder);
GST_LOG_OBJECT (base_video_encoder,
"finish frame fpn %d", frame->presentation_frame_number);
GST_BASE_VIDEO_CODEC_STREAM_LOCK (base_video_encoder);
/* Push all pending events that arrived before this frame */
for (l = base_video_encoder->base_video_codec.frames; l; l = l->next) {
GstVideoFrame *tmp = l->data;
if (tmp->events) {
GList *k;
for (k = g_list_last (tmp->events); k; k = k->prev)
gst_pad_push_event (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_encoder),
k->data);
g_list_free (tmp->events);
tmp->events = NULL;
}
if (tmp == frame)
break;
}
if (frame->force_keyframe) {
GstClockTime stream_time;
GstClockTime running_time;
GstEvent *ev;
running_time =
gst_segment_to_running_time (&GST_BASE_VIDEO_CODEC
(base_video_encoder)->segment, GST_FORMAT_TIME,
frame->presentation_timestamp);
stream_time =
gst_segment_to_stream_time (&GST_BASE_VIDEO_CODEC
(base_video_encoder)->segment, GST_FORMAT_TIME,
frame->presentation_timestamp);
/* re-use upstream event if any so it also conveys any additional
* info upstream arranged in there */
GST_OBJECT_LOCK (base_video_encoder);
if (base_video_encoder->force_keyunit_event) {
ev = base_video_encoder->force_keyunit_event;
base_video_encoder->force_keyunit_event = NULL;
} else {
ev = gst_event_new_custom (GST_EVENT_CUSTOM_DOWNSTREAM,
gst_structure_new ("GstForceKeyUnit", NULL));
}
GST_OBJECT_UNLOCK (base_video_encoder);
gst_structure_set (ev->structure,
"timestamp", G_TYPE_UINT64, frame->presentation_timestamp,
"stream-time", G_TYPE_UINT64, stream_time,
"running-time", G_TYPE_UINT64, running_time, NULL);
gst_pad_push_event (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_encoder), ev);
}
/* no buffer data means this frame is skipped/dropped */
if (!frame->src_buffer) {
GST_DEBUG_OBJECT (base_video_encoder, "skipping frame %" GST_TIME_FORMAT,
GST_TIME_ARGS (frame->presentation_timestamp));
goto done;
}
if (frame->is_sync_point) {
GST_LOG_OBJECT (base_video_encoder, "key frame");
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 * GST_BASE_VIDEO_CODEC (base_video_encoder)->state.fps_d,
GST_BASE_VIDEO_CODEC (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;
/* update rate estimate */
GST_BASE_VIDEO_CODEC (base_video_encoder)->bytes +=
GST_BUFFER_SIZE (frame->src_buffer);
if (GST_CLOCK_TIME_IS_VALID (frame->presentation_duration)) {
GST_BASE_VIDEO_CODEC (base_video_encoder)->time +=
frame->presentation_duration;
} else {
/* better none than nothing valid */
GST_BASE_VIDEO_CODEC (base_video_encoder)->time = GST_CLOCK_TIME_NONE;
}
if (G_UNLIKELY (GST_BASE_VIDEO_CODEC (base_video_encoder)->discont)) {
GST_LOG_OBJECT (base_video_encoder, "marking discont");
GST_BUFFER_FLAG_SET (frame->src_buffer, GST_BUFFER_FLAG_DISCONT);
GST_BASE_VIDEO_CODEC (base_video_encoder)->discont = FALSE;
}
gst_buffer_set_caps (GST_BUFFER (frame->src_buffer),
GST_PAD_CAPS (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_encoder)));
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);
}
frame->src_buffer = NULL;
done:
/* handed out */
GST_BASE_VIDEO_CODEC (base_video_encoder)->frames =
g_list_remove (GST_BASE_VIDEO_CODEC (base_video_encoder)->frames, frame);
gst_base_video_codec_free_frame (frame);
GST_BASE_VIDEO_CODEC_STREAM_UNLOCK (base_video_encoder);
return ret;
}
static GstFlowReturn
gst_base_video_encoder_chain (GstPad * pad, GstBuffer * buf)
{
GstBaseVideoEncoder *base_video_encoder;
GstBaseVideoEncoderClass *klass;
GstVideoFrame *frame;
GstFlowReturn ret = GST_FLOW_OK;
base_video_encoder = GST_BASE_VIDEO_ENCODER (gst_pad_get_parent (pad));
klass = GST_BASE_VIDEO_ENCODER_GET_CLASS (base_video_encoder);
g_return_val_if_fail (klass->handle_frame != NULL, GST_FLOW_ERROR);
GST_BASE_VIDEO_CODEC_STREAM_LOCK (base_video_encoder);
if (!GST_PAD_CAPS (pad)) {
ret = GST_FLOW_NOT_NEGOTIATED;
goto done;
}
GST_LOG_OBJECT (base_video_encoder,
"received buffer of size %d with ts %" GST_TIME_FORMAT
", duration %" GST_TIME_FORMAT, GST_BUFFER_SIZE (buf),
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)),
GST_TIME_ARGS (GST_BUFFER_DURATION (buf)));
if (base_video_encoder->a.at_eos) {
ret = GST_FLOW_UNEXPECTED;
goto done;
}
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 (&GST_BASE_VIDEO_CODEC (base_video_encoder)->segment,
GST_FORMAT_TIME, start, stop, &clip_start, &clip_stop)) {
GST_DEBUG_OBJECT (base_video_encoder,
"clipping to segment dropped frame");
goto done;
}
}
if (G_UNLIKELY (GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DISCONT))) {
GST_LOG_OBJECT (base_video_encoder, "marked discont");
GST_BASE_VIDEO_CODEC (base_video_encoder)->discont = TRUE;
}
frame =
gst_base_video_codec_new_frame (GST_BASE_VIDEO_CODEC
(base_video_encoder));
frame->events = base_video_encoder->current_frame_events;
base_video_encoder->current_frame_events = NULL;
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++;
frame->force_keyframe = base_video_encoder->force_keyframe;
base_video_encoder->force_keyframe = FALSE;
GST_BASE_VIDEO_CODEC (base_video_encoder)->frames =
g_list_append (GST_BASE_VIDEO_CODEC (base_video_encoder)->frames, frame);
/* new data, more finish needed */
base_video_encoder->drained = FALSE;
GST_LOG_OBJECT (base_video_encoder, "passing frame pfn %d to subclass",
frame->presentation_frame_number);
ret = klass->handle_frame (base_video_encoder, frame);
done:
GST_BASE_VIDEO_CODEC_STREAM_UNLOCK (base_video_encoder);
g_object_unref (base_video_encoder);
return ret;
}
