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flvmux: Correctly mark buffers as delta units

Browse source 
Mark video interframes, video codec data buffers and audio buffers (if
it's not an audio-only stream) as delta units.
This commit is contained in:
Jan Urbański 2010-03-15 01:09:49 +01:00 committed by Sebastian Dröge
parent 9fdecbc1c1
commit c69c5cb0d7
1 changed files with 26 additions and 11 deletions
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37
gst/flv/gstflvmux.c
View file

@ -867,8 +867,8 @@ gst_flv_mux_create_metadata (GstFlvMux * mux)
}
static GstBuffer *
gst_flv_mux_buffer_to_tag_internal (GstBuffer * buffer, GstFlvPad * cpad,
gboolean is_codec_data)
gst_flv_mux_buffer_to_tag_internal (GstFlvMux * mux, GstBuffer * buffer,
GstFlvPad * cpad, gboolean is_codec_data)
{
GstBuffer *tag;
guint8 *data;
@ -951,6 +951,12 @@ gst_flv_mux_buffer_to_tag_internal (GstBuffer * buffer, GstFlvPad * cpad,
GST_WRITE_UINT32_BE (data + size - 4, size - 4);
gst_buffer_copy_metadata (tag, buffer, GST_BUFFER_COPY_TIMESTAMPS);
/* mark the buffer if it's an audio buffer and there's also video being muxed
* or it's a video interframe */
if ((mux->have_video && !cpad->video) ||
GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT))
GST_BUFFER_FLAG_SET (tag, GST_BUFFER_FLAG_DELTA_UNIT);
GST_BUFFER_OFFSET (tag) = GST_BUFFER_OFFSET_END (tag) =
GST_BUFFER_OFFSET_NONE;
@ -958,15 +964,17 @@ gst_flv_mux_buffer_to_tag_internal (GstBuffer * buffer, GstFlvPad * cpad,
}
static inline GstBuffer *
gst_flv_mux_buffer_to_tag (GstBuffer * buffer, GstFlvPad * cpad)
gst_flv_mux_buffer_to_tag (GstFlvMux * mux, GstBuffer * buffer,
GstFlvPad * cpad)
{
return gst_flv_mux_buffer_to_tag_internal (buffer, cpad, FALSE);
return gst_flv_mux_buffer_to_tag_internal (mux, buffer, cpad, FALSE);
}
static inline GstBuffer *
gst_flv_mux_codec_data_buffer_to_tag (GstBuffer * buffer, GstFlvPad * cpad)
gst_flv_mux_codec_data_buffer_to_tag (GstFlvMux * mux, GstBuffer * buffer,
GstFlvPad * cpad)
{
return gst_flv_mux_buffer_to_tag_internal (buffer, cpad, TRUE);
return gst_flv_mux_buffer_to_tag_internal (mux, buffer, cpad, TRUE);
}
static void
@ -1010,24 +1018,31 @@ gst_flv_mux_write_header (GstFlvMux * mux)
"output might not be playable");
else
video_codec_data =
gst_flv_mux_codec_data_buffer_to_tag (cpad->video_codec_data, cpad);
gst_flv_mux_codec_data_buffer_to_tag (mux, cpad->video_codec_data,
cpad);
} else if (cpad && !cpad->video && cpad->audio_codec == 10) {
if (cpad->audio_codec_data == NULL)
GST_WARNING_OBJECT (mux, "Codec data for audio stream not found, "
"output might not be playable");
else
audio_codec_data =
gst_flv_mux_codec_data_buffer_to_tag (cpad->audio_codec_data, cpad);
gst_flv_mux_codec_data_buffer_to_tag (mux, cpad->audio_codec_data,
cpad);
}
}
/* mark buffers that will go in the streamheader */
GST_BUFFER_FLAG_SET (header, GST_BUFFER_FLAG_IN_CAPS);
GST_BUFFER_FLAG_SET (metadata, GST_BUFFER_FLAG_IN_CAPS);
if (video_codec_data != NULL)
if (video_codec_data != NULL) {
GST_BUFFER_FLAG_SET (video_codec_data, GST_BUFFER_FLAG_IN_CAPS);
if (audio_codec_data != NULL)
/* mark as a delta unit, so downstream will not try to synchronize on that
* buffer - to actually start playback you need a real video keyframe */
GST_BUFFER_FLAG_SET (video_codec_data, GST_BUFFER_FLAG_DELTA_UNIT);
}
if (audio_codec_data != NULL) {
GST_BUFFER_FLAG_SET (audio_codec_data, GST_BUFFER_FLAG_IN_CAPS);
}
/* put buffers in streamheader */
g_value_init (&streamheader, GST_TYPE_ARRAY);
@ -1103,7 +1118,7 @@ gst_flv_mux_write_buffer (GstFlvMux * mux, GstFlvPad * cpad)
if (!mux->is_live)
gst_flv_mux_update_index (mux, buffer, cpad);
tag = gst_flv_mux_buffer_to_tag (buffer, cpad);
tag = gst_flv_mux_buffer_to_tag (mux, buffer, cpad);
gst_buffer_unref (buffer);