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Optimization for cook codec. Rework sample output to be able to use highly optimized dsp routines. Moved some functions to iram. Speeds up codec by 1.3 MHz on PP5022.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24815 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Andree Buschmann 2010-02-21 19:47:05 +00:00
parent a31624e76e
commit 3d6faa08bf
5 changed files with 34 additions and 56 deletions
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14
apps/codecs/cook.c
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@ -31,6 +31,7 @@ CODEC_HEADER
RMContext rmctx;
RMPacket pkt;
COOKContext q IBSS_ATTR;
int32_t rm_outbuf[2048];
static void init_rm(RMContext *rmctx)
{
@ -43,7 +44,6 @@ enum codec_status codec_main(void)
static size_t buff_size;
int datasize, res, consumed, i, time_offset;
uint8_t *bit_buffer;
int16_t outbuf[2048] __attribute__((aligned(32)));
uint16_t fs,sps,h;
uint32_t packet_count;
int scrambling_unit_size, num_units;
@ -65,9 +65,11 @@ next_track:
init_rm(&rmctx);
ci->configure(DSP_SET_FREQUENCY, ci->id3->frequency);
ci->configure(DSP_SET_SAMPLE_DEPTH, 16);
/* cook's sample representation is 21.11
* DSP_SET_SAMPLE_DEPTH = 11 (FRACT) + 16 (NATIVE) - 1 (SIGN) = 26 */
ci->configure(DSP_SET_SAMPLE_DEPTH, 26);
ci->configure(DSP_SET_STEREO_MODE, rmctx.nb_channels == 1 ?
STEREO_MONO : STEREO_INTERLEAVED);
STEREO_MONO : STEREO_NONINTERLEAVED);
packet_count = rmctx.nb_packets;
rmctx.audio_framesize = rmctx.block_align;
@ -155,7 +157,7 @@ seek_start :
ci->set_elapsed(rmctx.audiotimestamp+(1000*8*sps/rmctx.bit_rate)*i);
ci->seek_complete();
}
res = cook_decode_frame(&rmctx,&q, outbuf, &datasize, pkt.frames[i], rmctx.block_align);
res = cook_decode_frame(&rmctx,&q, rm_outbuf, &datasize, pkt.frames[i], rmctx.block_align);
rmctx.frame_number++;
/* skip the first two frames; no valid audio */
@ -166,7 +168,9 @@ seek_start :
return CODEC_ERROR;
}
ci->pcmbuf_insert(outbuf, NULL, q.samples_per_frame / rmctx.nb_channels);
ci->pcmbuf_insert(rm_outbuf,
rm_outbuf+q.samples_per_channel,
q.samples_per_channel);
ci->set_elapsed(rmctx.audiotimestamp+(1000*8*sps/rmctx.bit_rate)*i);
}
packet_count -= rmctx.audio_pkt_cnt;