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Simplifying buffering to make an Opus-level highpass possible

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This commit is contained in:
Jean-Marc Valin 2011-09-01 16:56:40 -04:00
parent b6c3f06b53
commit 2f0ca7618d
1 changed files with 11 additions and 18 deletions
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29
src/opus_encoder.c
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@ -467,6 +467,12 @@ int opus_encode_float(OpusEncoder *st, const opus_val16 *pcm, int frame_size,
ec_enc_init(&enc, data, max_data_bytes-1);
ALLOC(pcm_buf, (st->delay_compensation+frame_size)*st->channels, opus_val16);
for (i=0;i<st->delay_compensation*st->channels;i++)
pcm_buf[i] = st->delay_buffer[(st->encoder_buffer-st->delay_compensation)*st->channels+i];
for (i=0;i<frame_size*st->channels;i++)
pcm_buf[st->delay_compensation*st->channels + i] = pcm[i];
/* SILK processing */
if (st->mode != MODE_CELT_ONLY)
{
@ -537,10 +543,10 @@ int opus_encode_float(OpusEncoder *st, const opus_val16 *pcm, int frame_size,
}
#ifdef FIXED_POINT
pcm_silk = pcm;
pcm_silk = pcm_buf+st->delay_compensation*st->channels;
#else
for (i=0;i<frame_size*st->channels;i++)
pcm_silk[i] = FLOAT2INT16(pcm[i]);
pcm_silk[i] = FLOAT2INT16(pcm_buf[st->delay_compensation*st->channels + i]);
#endif
ret = silk_Encode( silk_enc, &st->silk_mode, pcm_silk, frame_size, &enc, &nBytes, 0 );
if( ret ) {
@ -634,11 +640,9 @@ int opus_encode_float(OpusEncoder *st, const opus_val16 *pcm, int frame_size,
nb_compr_bytes = 0;
}
ALLOC(pcm_buf, IMAX(frame_size, st->Fs/200)*st->channels, opus_val16);
for (i=0;i<IMIN(frame_size, st->delay_compensation)*st->channels;i++)
pcm_buf[i] = st->delay_buffer[(st->encoder_buffer-st->delay_compensation)*st->channels+i];
for (;i<frame_size*st->channels;i++)
pcm_buf[i] = pcm[i-st->delay_compensation*st->channels];
for (i=0;i<st->encoder_buffer*st->channels;i++)
st->delay_buffer[i] = pcm_buf[(frame_size+st->delay_compensation-st->encoder_buffer)*st->channels+i];
if( st->mode == MODE_HYBRID && st->stream_channels == 2 ) {
/* Apply stereo width reduction (at low bitrates) */
@ -735,17 +739,6 @@ int opus_encode_float(OpusEncoder *st, const opus_val16 *pcm, int frame_size,
}
if (frame_size>st->encoder_buffer)
{
for (i=0;i<st->encoder_buffer*st->channels;i++)
st->delay_buffer[i] = pcm[(frame_size-st->encoder_buffer)*st->channels+i];
} else {
int tmp = st->encoder_buffer-frame_size;
for (i=0;i<tmp*st->channels;i++)
st->delay_buffer[i] = st->delay_buffer[i+frame_size*st->channels];
for (i=0;i<frame_size*st->channels;i++)
st->delay_buffer[tmp*st->channels+i] = pcm[i];
}
/* Signalling the mode in the first byte */
data--;