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avauddec: Negotiate based on the AVFrame instead of just the AVCodecContext

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This commit is contained in:
Sebastian Dröge 2015-06-27 20:08:46 +02:00
parent 523ddb5346
commit 0767bdda5f
1 changed files with 41 additions and 22 deletions
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63
ext/libav/gstavauddec.c
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@ -27,6 +27,7 @@
#include <string.h>
#include <libavcodec/avcodec.h>
#include <libavutil/channel_layout.h>
#include <gst/gst.h>
@ -52,7 +53,7 @@ static GstFlowReturn gst_ffmpegauddec_handle_frame (GstAudioDecoder * decoder,
GstBuffer * inbuf);
static gboolean gst_ffmpegauddec_negotiate (GstFFMpegAudDec * ffmpegdec,
gboolean force);
AVCodecContext * context, AVFrame * frame, gboolean force);
static void gst_ffmpegauddec_drain (GstFFMpegAudDec * ffmpegdec);
@ -273,12 +274,17 @@ gst_ffmpegauddec_get_buffer (AVCodecContext * context, AVFrame * frame)
BufferInfo *buffer_info;
ffmpegdec = (GstFFMpegAudDec *) context->opaque;
if (G_UNLIKELY (!gst_ffmpegauddec_negotiate (ffmpegdec, FALSE)))
if (ffmpegdec->info.finfo && settings_changed (ffmpegdec, context, frame))
goto fallback;
if (G_UNLIKELY (!gst_ffmpegauddec_negotiate (ffmpegdec, context, frame,
FALSE)))
goto negotiate_failed;
/* Always use the default allocator for planar audio formats because
* we will have to copy and deinterleave later anyway */
if (av_sample_fmt_is_planar (ffmpegdec->context->sample_fmt))
if (av_sample_fmt_is_planar (frame->format))
goto fallback;
info = gst_audio_decoder_get_audio_info (GST_AUDIO_DECODER (ffmpegdec));
@ -372,45 +378,57 @@ open_failed:
}
static gboolean
gst_ffmpegauddec_negotiate (GstFFMpegAudDec * ffmpegdec, gboolean force)
settings_changed (GstFFMpegAudDec * ffmpegdec, AVFrame * frame)
{
GstAudioFormat format;
gint channels = av_get_channel_layout_nb_channels (frame->channel_layout);
format = gst_ffmpeg_smpfmt_to_audioformat (frame->format);
if (format == GST_AUDIO_FORMAT_UNKNOWN)
return TRUE;
return !(ffmpegdec->info.rate ==
frame->sample_rate &&
ffmpegdec->info.channels == channels &&
ffmpegdec->info.finfo->format == format);
}
static gboolean
gst_ffmpegauddec_negotiate (GstFFMpegAudDec * ffmpegdec,
AVCodecContext * context, AVFrame * frame, gboolean force)
{
GstFFMpegAudDecClass *oclass;
gint depth;
GstAudioFormat format;
gint channels;
GstAudioChannelPosition pos[64] = { 0, };
oclass = (GstFFMpegAudDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
depth = av_smp_format_depth (ffmpegdec->context->sample_fmt) * 8;
format = gst_ffmpeg_smpfmt_to_audioformat (ffmpegdec->context->sample_fmt);
format = gst_ffmpeg_smpfmt_to_audioformat (frame->format);
if (format == GST_AUDIO_FORMAT_UNKNOWN)
goto no_caps;
channels = av_get_channel_layout_nb_channels (frame->channel_layout);
if (channels == 0)
goto no_caps;
if (!force && ffmpegdec->info.rate ==
ffmpegdec->context->sample_rate &&
ffmpegdec->info.channels == ffmpegdec->context->channels &&
ffmpegdec->info.finfo->depth == depth)
if (!force && !settings_changed (ffmpegdec, frame))
return TRUE;
GST_DEBUG_OBJECT (ffmpegdec,
"Renegotiating audio from %dHz@%dchannels (%d) to %dHz@%dchannels (%d)",
ffmpegdec->info.rate, ffmpegdec->info.channels,
ffmpegdec->info.finfo->depth,
ffmpegdec->context->sample_rate, ffmpegdec->context->channels, depth);
ffmpegdec->info.finfo->format, frame->sample_rate, channels, format);
gst_ffmpeg_channel_layout_to_gst (ffmpegdec->context->channel_layout,
ffmpegdec->context->channels, pos);
gst_ffmpeg_channel_layout_to_gst (frame->channel_layout, channels, pos);
memcpy (ffmpegdec->ffmpeg_layout, pos,
sizeof (GstAudioChannelPosition) * ffmpegdec->context->channels);
sizeof (GstAudioChannelPosition) * channels);
/* Get GStreamer channel layout */
gst_audio_channel_positions_to_valid_order (pos,
ffmpegdec->context->channels);
gst_audio_channel_positions_to_valid_order (pos, channels);
ffmpegdec->needs_reorder =
memcmp (pos, ffmpegdec->ffmpeg_layout,
sizeof (pos[0]) * ffmpegdec->context->channels) != 0;
memcmp (pos, ffmpegdec->ffmpeg_layout, sizeof (pos[0]) * channels) != 0;
gst_audio_info_set_format (&ffmpegdec->info, format,
ffmpegdec->context->sample_rate, ffmpegdec->context->channels, pos);
frame->sample_rate, channels, pos);
if (!gst_audio_decoder_set_output_format (GST_AUDIO_DECODER (ffmpegdec),
&ffmpegdec->info))
@ -482,7 +500,8 @@ gst_ffmpegauddec_audio_frame (GstFFMpegAudDec * ffmpegdec,
gint nsamples, channels, byte_per_sample;
gsize output_size;
if (!gst_ffmpegauddec_negotiate (ffmpegdec, FALSE)) {
if (!gst_ffmpegauddec_negotiate (ffmpegdec, ffmpegdec->context, &frame,
FALSE)) {
*outbuf = NULL;
*ret = GST_FLOW_NOT_NEGOTIATED;
len = -1;