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G.729 decoder initialization routine (skeleton)

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Originally committed as revision 19188 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Vladimir Voroshilov
2009-06-14 02:31:06 +00:00
parent 730c1e4a06
commit 94994d8d9a
1 changed files with 8 additions and 0 deletions
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8
libavcodec/g729dec.c
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@@ -97,11 +97,19 @@ static inline int get_parity(uint8_t value)
return (0x6996966996696996ULL >> (value >> 2)) & 1;
}
static av_cold int decoder_init(AVCodecContext * avctx)
{
if (avctx->channels != 1) {
av_log(avctx, AV_LOG_ERROR, "Only mono sound is supported (requested channels: %d).\n", avctx->channels);
return AVERROR_NOFMT;
}
/* Both 8kbit/s and 6.4kbit/s modes uses two subframes per frame. */
avctx->frame_size = SUBFRAME_SIZE << 1;
return 0;
}
ff_acelp_weighted_vector_sum(fc + pitch_delay_int[i],
fc + pitch_delay_int[i],
fc, 1 << 14,