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"Detach" ATRAC3 from RM. Since ATRAC3 isn't really specific to RM, it must not be obligatory to initialize the decoder through RMContext.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24682 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Mohamed Tarek 2010-02-16 01:47:22 +00:00
parent 419e8aad78
commit 2e314093c8
6 changed files with 45 additions and 54 deletions
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27
apps/codecs/atrac3_oma.c
View file

@ -31,24 +31,8 @@ CODEC_HEADER
#define FRAMESIZE ci->id3->bytesperframe
#define BITRATE ci->id3->bitrate
/* The codec has nothing to do with RM, it just uses an RMContext struct to *
* store the data needs to be passed to the decoder initializing function. */
RMContext rmctx;
ATRAC3Context q IBSS_ATTR;
static void init_rm(RMContext *rmctx, struct mp3entry *id3)
{
rmctx->sample_rate = id3->frequency;
rmctx->nb_channels = 2;
rmctx->bit_rate = id3->bitrate;
rmctx->block_align = id3->bytesperframe;
/* 14-byte extra-data was faked in the metadata parser so that *
* the ATRAC3 decoder would parse it as WAV format extra-data. */
rmctx->extradata_size = 14;
memcpy(rmctx->codec_extradata, &id3->id3v1buf[0][0], 14);
}
/* this is the codec entry point */
enum codec_status codec_main(void)
{
@ -67,17 +51,14 @@ next_track:
ci->sleep(1);
codec_set_replaygain(ci->id3);
ci->memset(&rmctx,0,sizeof(RMContext));
ci->memset(&q,0,sizeof(ATRAC3Context));
init_rm(&rmctx, ci->id3);
ci->configure(DSP_SET_FREQUENCY, ci->id3->frequency);
ci->configure(DSP_SET_SAMPLE_DEPTH, 17); /* Remark: atrac3 uses s15.0 by default, s15.2 was hacked. */
ci->configure(DSP_SET_STEREO_MODE, rmctx.nb_channels == 1 ?
ci->configure(DSP_SET_STEREO_MODE, ci->id3->channels == 1 ?
STEREO_MONO : STEREO_NONINTERLEAVED);
res =atrac3_decode_init(&q, &rmctx);
res =atrac3_decode_init(&q, ci->id3);
if(res < 0) {
DEBUGF("failed to initialize atrac decoder\n");
return CODEC_ERROR;
@ -133,7 +114,7 @@ seek_start :
ci->seek_complete();
}
res = atrac3_decode_frame(&rmctx, &q, &datasize, bit_buffer, FRAMESIZE);
res = atrac3_decode_frame(FRAMESIZE, &q, &datasize, bit_buffer, FRAMESIZE);
if(res != (int)FRAMESIZE) {
DEBUGF("codec error\n");
@ -141,7 +122,7 @@ seek_start :
}
if(datasize)
ci->pcmbuf_insert(q.outSamples, q.outSamples + 1024, q.samples_per_frame / rmctx.nb_channels);
ci->pcmbuf_insert(q.outSamples, q.outSamples + 1024, q.samples_per_frame / ci->id3->channels);
elapsed += (FRAMESIZE * 8) / BITRATE;
ci->set_elapsed(elapsed);

8
apps/codecs/atrac3_rm.c
View file

@ -34,7 +34,11 @@ ATRAC3Context q IBSS_ATTR;
static void init_rm(RMContext *rmctx)
{
/* initialize the RMContext */
memcpy(rmctx, (void*)(( (intptr_t)ci->id3->id3v2buf + 3 ) &~ 3), sizeof(RMContext));
/* and atrac3 expects extadata in id3v2buf, so we shall give it that */
memcpy(ci->id3->id3v2buf, (char*)rmctx->codec_extradata, rmctx->extradata_size*sizeof(char));
}
/* this is the codec entry point */
@ -77,7 +81,7 @@ next_track:
h = rmctx.sub_packet_h;
scrambling_unit_size = h*fs;
res =atrac3_decode_init(&q, &rmctx);
res =atrac3_decode_init(&q, ci->id3);
if(res < 0) {
DEBUGF("failed to initialize atrac decoder\n");
return CODEC_ERROR;
@ -168,7 +172,7 @@ seek_start :
ci->seek_complete();
}
if(pkt.length)
res = atrac3_decode_frame(&rmctx, &q, &datasize, pkt.frames[i], rmctx.block_align);
res = atrac3_decode_frame(rmctx.block_align, &q, &datasize, pkt.frames[i], rmctx.block_align);
else /* indicates that there are no remaining frames */
goto done;

36
apps/codecs/libatrac/atrac3.c
View file

@ -1074,17 +1074,17 @@ static int decodeFrame(ATRAC3Context *q, const uint8_t* databuf, int off)
* @param rmctx pointer to the AVCodecContext
*/
int atrac3_decode_frame(RMContext *rmctx, ATRAC3Context *q,
int atrac3_decode_frame(unsigned long block_align, ATRAC3Context *q,
int *data_size, const uint8_t *buf, int buf_size) {
int result = 0, off = 0;
const uint8_t* databuf;
if (buf_size < rmctx->block_align)
if (buf_size < block_align)
return buf_size;
/* Check if we need to descramble and what buffer to pass on. */
if (q->scrambled_stream) {
off = decode_bytes(buf, q->decoded_bytes_buffer, rmctx->block_align);
off = decode_bytes(buf, q->decoded_bytes_buffer, block_align);
databuf = q->decoded_bytes_buffer;
} else {
databuf = buf;
@ -1102,7 +1102,7 @@ int atrac3_decode_frame(RMContext *rmctx, ATRAC3Context *q,
else
*data_size = 2048 * sizeof(int32_t);
return rmctx->block_align;
return block_align;
}
@ -1111,23 +1111,23 @@ int atrac3_decode_frame(RMContext *rmctx, ATRAC3Context *q,
*
* @param rmctx pointer to the RMContext
*/
int atrac3_decode_init(ATRAC3Context *q, RMContext *rmctx)
int atrac3_decode_init(ATRAC3Context *q, struct mp3entry *id3)
{
int i;
uint8_t *edata_ptr = rmctx->codec_extradata;
uint8_t *edata_ptr = (uint8_t*)&id3->id3v2buf;
static VLC_TYPE atrac3_vlc_table[4096][2];
static int vlcs_initialized = 0;
/* Take data from the AVCodecContext (RM container). */
q->sample_rate = rmctx->sample_rate;
q->channels = rmctx->nb_channels;
q->bit_rate = rmctx->bit_rate;
q->bits_per_frame = rmctx->block_align * 8;
q->bytes_per_frame = rmctx->block_align;
/* Take data from the RM container. */
q->sample_rate = id3->frequency;
q->channels = id3->channels;
q->bit_rate = id3->bitrate * 1000;
q->bits_per_frame = id3->bytesperframe * 8;
q->bytes_per_frame = id3->bytesperframe;
/* Take care of the codec-specific extradata. */
if (rmctx->extradata_size == 14) {
if (id3->extradata_size == 14) {
/* Parse the extradata, WAV format */
DEBUGF("[0-1] %d\n",rm_get_uint16le(&edata_ptr[0])); /* Unknown value always 1 */
q->samples_per_channel = rm_get_uint32le(&edata_ptr[2]);
@ -1152,7 +1152,7 @@ int atrac3_decode_init(ATRAC3Context *q, RMContext *rmctx)
return -1;
}
} else if (rmctx->extradata_size == 10) {
} else if (id3->extradata_size == 10) {
/* Parse the extradata, RM format. */
q->atrac3version = rm_get_uint32be(&edata_ptr[0]);
q->samples_per_frame = rm_get_uint16be(&edata_ptr[4]);
@ -1163,7 +1163,7 @@ int atrac3_decode_init(ATRAC3Context *q, RMContext *rmctx)
q->scrambled_stream = 1;
} else {
DEBUGF("Unknown extradata size %d.\n",rmctx->extradata_size);
DEBUGF("Unknown extradata size %d.\n",id3->extradata_size);
}
/* Check the extradata. */
@ -1191,13 +1191,13 @@ int atrac3_decode_init(ATRAC3Context *q, RMContext *rmctx)
return -1;
}
if (rmctx->nb_channels <= 0 || rmctx->nb_channels > 2 /*|| ((rmctx->channels * 1024) != q->samples_per_frame)*/) {
if (id3->channels <= 0 || id3->channels > 2 ) {
DEBUGF("Channel configuration error!\n");
return -1;
}
if(rmctx->block_align >= UINT16_MAX/2)
if(id3->bytesperframe >= UINT16_MAX/2)
return -1;

7
apps/codecs/libatrac/atrac3.h
View file

@ -1,5 +1,8 @@
#include "ffmpeg_bitstream.h"
#include "../librm/rm.h"
#ifdef ROCKBOX
#include "codeclib.h"
#endif
#if (CONFIG_CPU == PP5022) || (CONFIG_CPU == PP5024) || (CONFIG_CPU == MCF5250)
/* PP5022/24 and MCF5250 have larger IRAM */
@ -82,8 +85,8 @@ typedef struct {
//@}
} ATRAC3Context;
int atrac3_decode_init(ATRAC3Context *q, RMContext *rmctx);
int atrac3_decode_init(ATRAC3Context *q, struct mp3entry *id3);
int atrac3_decode_frame(RMContext *rmctx, ATRAC3Context *q,
int atrac3_decode_frame(unsigned long block_align, ATRAC3Context *q,
int *data_size, const uint8_t *buf, int buf_size);

19
apps/metadata/oma.c
View file

@ -137,7 +137,7 @@ int oma_read_header(int fd, struct mp3entry* id3)
case OMA_CODECID_ATRAC3:
id3->frequency = srate_tab[(codec_params >> 13) & 7]*100;
if (id3->frequency != 44100) {
DEBUGF("Unsupported sample rate, send sample file to developers: %d\n", samplerate);
DEBUGF("Unsupported sample rate, send sample file to developers: %d\n", id3->frequency);
return -1;
}
@ -149,16 +149,17 @@ int oma_read_header(int fd, struct mp3entry* id3)
/* fake the atrac3 extradata (wav format, makes stream copy to wav work) */
/* ATRAC3 expects and extra-data size of 14 bytes for wav format; extra-data size *
* is stored in ATRAC3Context before initializing the decoder. See atrac3_oma.codec. *
* is stored in ATRAC3Context before initializing the decoder. *
* We use id3v2buf to hold the (fake) extra-data provided from the container. */
id3->extradata_size = 14;
AV_WL16(&id3->id3v2buf[0], 1); // always 1
AV_WL32(&id3->id3v2buf[2], id3->frequency); // samples rate
AV_WL16(&id3->id3v2buf[6], jsflag); // coding mode
AV_WL16(&id3->id3v2buf[8], jsflag); // coding mode
AV_WL16(&id3->id3v2buf[10], 1); // always 1
AV_WL16(&id3->id3v2buf[12], 0); // always 0
AV_WL16(&id3->id3v1buf[0][0], 1); // always 1
AV_WL32(&id3->id3v1buf[0][2], id3->frequency); // samples rate
AV_WL16(&id3->id3v1buf[0][6], jsflag); // coding mode
AV_WL16(&id3->id3v1buf[0][8], jsflag); // coding mode
AV_WL16(&id3->id3v1buf[0][10], 1); // always 1
AV_WL16(&id3->id3v1buf[0][12], 0); // always 0
id3->channels = 2;
DEBUGF("sample_rate = %d\n", id3->frequency);
DEBUGF("frame_size = %d\n", id3->bytesperframe);
DEBUGF("stereo_coding_mode = %d\n", jsflag);

2
apps/metadata/rm.c
View file

@ -438,6 +438,8 @@ bool get_rm_metadata(int fd, struct mp3entry* id3)
break;
}
id3->channels = rmctx->nb_channels;
id3->extradata_size = rmctx->extradata_size;
id3->bitrate = rmctx->bit_rate / 1000;
id3->frequency = rmctx->sample_rate;
id3->length = rmctx->duration;