static gboolean
settings_changed (GstFFMpegAudDec * ffmpegdec, AVFrame * frame)
{
GstAudioFormat format;
gint channels =
av_get_channel_layout_nb_channels (av_frame_get_channel_layout (frame));
format = gst_ffmpeg_smpfmt_to_audioformat (frame->format);
if (format == GST_AUDIO_FORMAT_UNKNOWN)
return TRUE;
return !(ffmpegdec->info.rate ==
av_frame_get_sample_rate (frame) &&
ffmpegdec->info.channels == channels &&
ffmpegdec->info.finfo->format == format);
}
static gboolean
gst_ffmpegauddec_negotiate (GstFFMpegAudDec * ffmpegdec,
AVCodecContext * context, AVFrame * frame, gboolean force)
{
GstFFMpegAudDecClass *oclass;
GstAudioFormat format;
gint channels;
GstAudioChannelPosition pos[64] = { 0, };
oclass = (GstFFMpegAudDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
format = gst_ffmpeg_smpfmt_to_audioformat (frame->format);
if (format == GST_AUDIO_FORMAT_UNKNOWN)
goto no_caps;
channels =
av_get_channel_layout_nb_channels (av_frame_get_channel_layout (frame));
if (channels == 0)
channels = av_frame_get_channels (frame);
if (channels == 0)
goto no_caps;
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->format, av_frame_get_sample_rate (frame), channels,
format);
gst_ffmpeg_channel_layout_to_gst (av_frame_get_channel_layout (frame),
channels, pos);
memcpy (ffmpegdec->ffmpeg_layout, pos,
sizeof (GstAudioChannelPosition) * channels);
/* Get GStreamer channel layout */
gst_audio_channel_positions_to_valid_order (pos, channels);
ffmpegdec->needs_reorder =
memcmp (pos, ffmpegdec->ffmpeg_layout, sizeof (pos[0]) * channels) != 0;
gst_audio_info_set_format (&ffmpegdec->info, format,
av_frame_get_sample_rate (frame), channels, pos);
if (!gst_audio_decoder_set_output_format (GST_AUDIO_DECODER (ffmpegdec),
&ffmpegdec->info))
goto caps_failed;
return TRUE;
/* ERRORS */
no_caps:
{
#ifdef HAVE_LIBAV_UNINSTALLED
/* using internal ffmpeg snapshot */
GST_ELEMENT_ERROR (ffmpegdec, CORE, NEGOTIATION,
("Could not find GStreamer caps mapping for libav codec '%s'.",
oclass->in_plugin->name), (NULL));
#else
/* using external ffmpeg */
GST_ELEMENT_ERROR (ffmpegdec, CORE, NEGOTIATION,
("Could not find GStreamer caps mapping for libav codec '%s', and "
"you are using an external libavcodec. This is most likely due to "
"a packaging problem and/or libavcodec having been upgraded to a "
"version that is not compatible with this version of "
"gstreamer-libav. Make sure your gstreamer-libav and libavcodec "
"packages come from the same source/repository.",
oclass->in_plugin->name), (NULL));
#endif
return FALSE;
}
caps_failed:
{
GST_ELEMENT_ERROR (ffmpegdec, CORE, NEGOTIATION, (NULL),
("Could not set caps for libav decoder (%s), not fixed?",
oclass->in_plugin->name));
memset (&ffmpegdec->info, 0, sizeof (ffmpegdec->info));
return FALSE;
}
}
int AudioSamples::sampleRate() const
{
return m_raw ? av_frame_get_sample_rate(m_raw) : 0;
}
