MrBesen/ffmpeg
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Refactor windowing and early psy from bitstream writing parts of the AAC encoder.

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Originally committed as revision 19380 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Alex Converse 2009-07-08 23:10:13 +00:00
parent 7a4eebcdce
commit 5962f6b0da
1 changed files with 16 additions and 5 deletions
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21
libavcodec/aacenc.c
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@ -485,6 +485,7 @@ static int aac_encode_frame(AVCodecContext *avctx,
int i, j, chans, tag, start_ch;
const uint8_t *chan_map = aac_chan_configs[avctx->channels-1];
int chan_el_counter[4];
FFPsyWindowInfo windows[avctx->channels];
if (s->last_frame)
return 0;
@ -510,13 +511,9 @@ static int aac_encode_frame(AVCodecContext *avctx,
return 0;
}
init_put_bits(&s->pb, frame, buf_size*8);
if ((avctx->frame_number & 0xFF)==1 && !(avctx->flags & CODEC_FLAG_BITEXACT))
put_bitstream_info(avctx, s, LIBAVCODEC_IDENT);
start_ch = 0;
memset(chan_el_counter, 0, sizeof(chan_el_counter));
for (i = 0; i < chan_map[0]; i++) {
FFPsyWindowInfo wi[2];
FFPsyWindowInfo* wi = windows + start_ch;
tag = chan_map[i+1];
chans = tag == TYPE_CPE ? 2 : 1;
cpe = &s->cpe[i];
@ -540,6 +537,20 @@ static int aac_encode_frame(AVCodecContext *avctx,
s->cur_channel = start_ch + j;
apply_window_and_mdct(avctx, s, &cpe->ch[j], samples2, j);
}
start_ch += chans;
}
init_put_bits(&s->pb, frame, buf_size*8);
if ((avctx->frame_number & 0xFF)==1 && !(avctx->flags & CODEC_FLAG_BITEXACT))
put_bitstream_info(avctx, s, LIBAVCODEC_IDENT);
start_ch = 0;
memset(chan_el_counter, 0, sizeof(chan_el_counter));
for (i = 0; i < chan_map[0]; i++) {
FFPsyWindowInfo* wi = windows + start_ch;
tag = chan_map[i+1];
chans = tag == TYPE_CPE ? 2 : 1;
cpe = &s->cpe[i];
for (j = 0; j < chans; j++) {
s->coder->search_for_quantizers(avctx, s, &cpe->ch[j], s->lambda);
}
cpe->common_window = 0;