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Viewing changes to libavfilter/audio.c

  • Committer: Package Import Robot
  • Author(s): Reinhard Tartler
  • Date: 2012-12-21 15:32:13 UTC
  • mto: (1.2.18)
  • mto: This revision was merged to the branch mainline in revision 34.
  • Revision ID: package-import@ubuntu.com-20121221153213-fudzrugjzivtv0wp
Tags: upstream-9~beta3
Import upstream version 9~beta3

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libavfilter/audio.c
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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#include "libavutil/audioconvert.h"
 
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#include "libavutil/channel_layout.h"
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#include "libavutil/common.h"
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#include "audio.h"
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    av_freep(&samples);
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    return NULL;
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}
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static int default_filter_samples(AVFilterLink *link,
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                                  AVFilterBufferRef *samplesref)
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{
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    return ff_filter_samples(link->dst->outputs[0], samplesref);
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}
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int ff_filter_samples(AVFilterLink *link, AVFilterBufferRef *samplesref)
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{
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    int (*filter_samples)(AVFilterLink *, AVFilterBufferRef *);
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    AVFilterPad *dst = link->dstpad;
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    AVFilterBufferRef *buf_out;
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    FF_DPRINTF_START(NULL, filter_samples); ff_dlog_link(NULL, link, 1);
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    if (!(filter_samples = dst->filter_samples))
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        filter_samples = default_filter_samples;
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    /* prepare to copy the samples if the buffer has insufficient permissions */
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    if ((dst->min_perms & samplesref->perms) != dst->min_perms ||
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        dst->rej_perms & samplesref->perms) {
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        av_log(link->dst, AV_LOG_DEBUG,
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               "Copying audio data in avfilter (have perms %x, need %x, reject %x)\n",
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               samplesref->perms, link->dstpad->min_perms, link->dstpad->rej_perms);
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        buf_out = ff_default_get_audio_buffer(link, dst->min_perms,
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                                              samplesref->audio->nb_samples);
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        if (!buf_out) {
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            avfilter_unref_buffer(samplesref);
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            return AVERROR(ENOMEM);
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        }
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        buf_out->pts                = samplesref->pts;
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        buf_out->audio->sample_rate = samplesref->audio->sample_rate;
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        /* Copy actual data into new samples buffer */
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        av_samples_copy(buf_out->extended_data, samplesref->extended_data,
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                        0, 0, samplesref->audio->nb_samples,
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                        av_get_channel_layout_nb_channels(link->channel_layout),
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                        link->format);
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        avfilter_unref_buffer(samplesref);
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    } else
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        buf_out = samplesref;
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    return filter_samples(link, buf_out);
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}
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