[FFmpeg-trac] #1834(swresample:reopened): swr_convert() results in integer division by zero exception

[FFmpeg]

#1834: swr_convert() results in integer division by zero exception
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             Reporter:  mbradshaw   |                    Owner:  michael
                 Type:  defect      |                   Status:  reopened
             Priority:  normal      |                Component:  swresample
              Version:  git-master  |               Resolution:
             Keywords:              |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
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Changes (by TheSHEEEP):

 * status:  closed => reopened
 * resolution:  invalid =>


Comment:

 Hey.

 I do have the same problem as the OP, but mine did not go away after
 calling swr_init() as I did so from the beginning.

 Here us how I initialize the context:
 {{{
 SwrContext* swrContext = swr_alloc_set_opts(NULL,
                 audioCodecContext->channel_layout, AV_SAMPLE_FMT_S16P,
 audioCodecContext->sample_rate,
                 audioCodecContext->channel_layout,
 audioCodecContext->sample_fmt, audioCodecContext->sample_rate,
                 0, NULL);
 int result = swr_init(swrContext);

 // Create destination sample buffer
 uint8_t* destBuffer = NULL;
 int destBufferLinesize;
 av_samples_alloc(   &destBuffer,
                         &destBufferLinesize,
                         videoInfo.audioNumChannels,
                         2048,
                         AV_SAMPLE_FMT_S16P,
                         0);
 }}}

 And here is the call to convert:
 {{{
 int outputSamples = swr_convert(p_swrContext,
                                 &p_destBuffer, 2048,
                                 (const uint8_t**)p_frame->extended_data,
 p_frame->nb_samples);
 }}}

 I also tried using AV_SAMPLE_FMT_S16 (non-planaer, as that is what OpenAL
 wants AFAIK), but it yields the same error.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/1834#comment:4>
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