[FFmpeg-devel] Trouble with GSM audio.
Artem Korneev
tema
Tue Oct 2 23:33:04 CEST 2007
Last weeks I spent in attempting to decode audio frames from GSM format
to PCM. But I still have no solution. :(
I've initialize codec context by these lines:
inCtx->bit_rate = 13000;
inCtx->sample_rate = 8000;
inCtx->channels = 1;
and after that, decode buffer with GSM audio by this code:
while ( in_size > 0 ) {
outbuf_size = AVCODEC_MAX_AUDIO_FRAME_SIZE;
decoded_len = avcodec_decode_audio2(inCtx, samples_ptr,
&outbuf_size, inbuf_ptr, in_size);
in_size -= decoded_len;
inbuf_ptr += decoded_len;
samples_ptr += outbuf_size;
}
..and only noise I have as result. :( Does anybody have a workable
example of code for decoding GSM?
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