6b807b2d24
for that bug. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@7260 a1c6a512-1295-4272-9138-f99709370657
260 lines
8.6 KiB
C
260 lines
8.6 KiB
C
/***************************************************************************
|
|
* __________ __ ___.
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
|
* \/ \/ \/ \/ \/
|
|
* $Id$
|
|
*
|
|
* Copyright (C) 2005 Dave Chapman
|
|
*
|
|
* All files in this archive are subject to the GNU General Public License.
|
|
* See the file COPYING in the source tree root for full license agreement.
|
|
*
|
|
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
|
* KIND, either express or implied.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#include "codec.h"
|
|
|
|
#include <codecs/libmad/mad.h>
|
|
|
|
#include "playback.h"
|
|
#include "dsp.h"
|
|
#include "lib/codeclib.h"
|
|
#include "system.h"
|
|
|
|
struct mad_stream Stream IDATA_ATTR;
|
|
struct mad_frame Frame IDATA_ATTR;
|
|
struct mad_synth Synth IDATA_ATTR;
|
|
mad_timer_t Timer;
|
|
|
|
/* The following function is used inside libmad - let's hope it's never
|
|
called.
|
|
*/
|
|
|
|
void abort(void) {
|
|
}
|
|
|
|
|
|
#define INPUT_CHUNK_SIZE 8192
|
|
|
|
mad_fixed_t mad_frame_overlap[2][32][18] IDATA_ATTR;
|
|
unsigned char mad_main_data[MAD_BUFFER_MDLEN] IDATA_ATTR;
|
|
/* TODO: what latency does layer 1 have? */
|
|
int mpeg_latency[3] = { 0, 481, 529 };
|
|
#ifdef USE_IRAM
|
|
extern char iramcopy[];
|
|
extern char iramstart[];
|
|
extern char iramend[];
|
|
#endif
|
|
|
|
/* this is the codec entry point */
|
|
enum codec_status codec_start(struct codec_api* api)
|
|
{
|
|
struct codec_api *ci = api;
|
|
int Status = 0;
|
|
size_t size;
|
|
int file_end;
|
|
char *InputBuffer;
|
|
unsigned int samplecount;
|
|
unsigned int samplesdone;
|
|
bool first_frame;
|
|
int stop_skip, start_skip;
|
|
int current_stereo_mode = -1;
|
|
int frequency_divider;
|
|
|
|
/* Generic codec inititialisation */
|
|
TEST_CODEC_API(api);
|
|
|
|
#ifdef USE_IRAM
|
|
ci->memcpy(iramstart, iramcopy, iramend - iramstart);
|
|
#endif
|
|
|
|
/* This function sets up the buffers and reads the file into RAM */
|
|
|
|
if (codec_init(api)) {
|
|
return CODEC_ERROR;
|
|
}
|
|
|
|
/* Create a decoder instance */
|
|
|
|
ci->configure(CODEC_SET_FILEBUF_LIMIT, (int *)(1024*1024*2));
|
|
ci->configure(CODEC_SET_FILEBUF_CHUNKSIZE, (int *)(1024*16));
|
|
ci->configure(DSP_SET_CLIP_MIN, (int *)-MAD_F_ONE);
|
|
ci->configure(DSP_SET_CLIP_MAX, (int *)(MAD_F_ONE - 1));
|
|
ci->configure(DSP_SET_SAMPLE_DEPTH, (int *)(MAD_F_FRACBITS));
|
|
ci->configure(DSP_DITHER, (bool *)false);
|
|
ci->configure(CODEC_DSP_ENABLE, (bool *)true);
|
|
|
|
ci->memset(&Stream, 0, sizeof(struct mad_stream));
|
|
ci->memset(&Frame, 0, sizeof(struct mad_frame));
|
|
ci->memset(&Synth, 0, sizeof(struct mad_synth));
|
|
ci->memset(&Timer, 0, sizeof(mad_timer_t));
|
|
|
|
#if defined(CPU_COLDFIRE) && !defined(SIMULATOR)
|
|
mcf5249_init_mac();
|
|
#endif
|
|
mad_stream_init(&Stream);
|
|
mad_frame_init(&Frame);
|
|
mad_synth_init(&Synth);
|
|
mad_timer_reset(&Timer);
|
|
|
|
/* We do this so libmad doesn't try to call codec_calloc() */
|
|
memset(mad_frame_overlap, 0, sizeof(mad_frame_overlap));
|
|
Frame.overlap = &mad_frame_overlap;
|
|
Stream.main_data = &mad_main_data;
|
|
/* This label might need to be moved above all the init code, but I don't
|
|
think reiniting the codec is necessary for MPEG. It might even be unwanted
|
|
for gapless playback */
|
|
next_track:
|
|
|
|
first_frame = false;
|
|
file_end = 0;
|
|
|
|
while (!*ci->taginfo_ready && !ci->stop_codec)
|
|
ci->sleep(1);
|
|
|
|
frequency_divider = ci->id3->frequency / 100;
|
|
if (frequency_divider <= 0)
|
|
frequency_divider = 441;
|
|
|
|
ci->configure(DSP_SET_FREQUENCY, (int *)ci->id3->frequency);
|
|
codec_set_replaygain(ci->id3);
|
|
|
|
ci->request_buffer(&size, ci->id3->first_frame_offset);
|
|
ci->advance_buffer(size);
|
|
|
|
if (ci->id3->lead_trim >= 0 && ci->id3->tail_trim >= 0) {
|
|
stop_skip = ci->id3->tail_trim - mpeg_latency[ci->id3->layer];
|
|
if (stop_skip < 0) stop_skip = 0;
|
|
start_skip = ci->id3->lead_trim + mpeg_latency[ci->id3->layer];
|
|
} else {
|
|
stop_skip = 0;
|
|
/* We want to skip this amount anyway */
|
|
start_skip = mpeg_latency[ci->id3->layer];
|
|
}
|
|
|
|
/* NOTE: currently this doesn't work, the below calculated samples_count
|
|
seems to be right, but sometimes libmad just can't supply us with
|
|
all the data we need... */
|
|
if (ci->id3->frame_count) {
|
|
/* TODO: 1152 is the frame size in samples for MPEG1 layer 2 and layer 3,
|
|
it's probably not correct at all for MPEG2 and layer 1 */
|
|
samplecount = ci->id3->frame_count*1152 - (start_skip + stop_skip);
|
|
samplesdone = ci->id3->elapsed * frequency_divider / 10;
|
|
} else {
|
|
samplecount = ci->id3->length * frequency_divider / 10;
|
|
samplesdone = ci->id3->elapsed * frequency_divider / 10;
|
|
}
|
|
|
|
/* This is the decoding loop. */
|
|
while (1) {
|
|
ci->yield();
|
|
if (ci->stop_codec || ci->reload_codec) {
|
|
break ;
|
|
}
|
|
|
|
if (ci->seek_time) {
|
|
unsigned int sample_loc;
|
|
int newpos;
|
|
|
|
sample_loc = ci->seek_time * frequency_divider / 10;
|
|
newpos = ci->mp3_get_filepos(ci->seek_time-1);
|
|
if (sample_loc >= samplecount + samplesdone)
|
|
break ;
|
|
|
|
if (ci->seek_buffer(newpos)) {
|
|
samplecount += samplesdone - sample_loc;
|
|
samplesdone = sample_loc;
|
|
}
|
|
ci->seek_time = 0;
|
|
}
|
|
|
|
/* Lock buffers */
|
|
if (Stream.error == 0) {
|
|
InputBuffer = ci->request_buffer(&size, INPUT_CHUNK_SIZE);
|
|
if (size == 0 || InputBuffer == NULL)
|
|
break ;
|
|
mad_stream_buffer(&Stream, InputBuffer, size);
|
|
}
|
|
|
|
if(mad_frame_decode(&Frame,&Stream))
|
|
{
|
|
if (Stream.error == MAD_FLAG_INCOMPLETE || Stream.error == MAD_ERROR_BUFLEN) {
|
|
// ci->splash(HZ*1, true, "Incomplete");
|
|
/* This makes the codec to support partially corrupted files too. */
|
|
if (file_end == 30)
|
|
break ;
|
|
|
|
/* Fill the buffer */
|
|
Stream.error = 0;
|
|
file_end++;
|
|
continue ;
|
|
}
|
|
else if(MAD_RECOVERABLE(Stream.error))
|
|
{
|
|
if(Stream.error!=MAD_ERROR_LOSTSYNC)
|
|
{
|
|
// rb->splash(HZ*1, true, "Recoverable...!");
|
|
}
|
|
continue;
|
|
}
|
|
else if(Stream.error==MAD_ERROR_BUFLEN) {
|
|
//rb->splash(HZ*1, true, "Buflen error");
|
|
break ;
|
|
} else {
|
|
//rb->splash(HZ*1, true, "Unrecoverable error");
|
|
Status=1;
|
|
break;
|
|
}
|
|
break ;
|
|
}
|
|
|
|
file_end = false;
|
|
/* ?? Do we need the timer module? */
|
|
// mad_timer_add(&Timer,Frame.header.duration);
|
|
|
|
mad_synth_frame(&Synth,&Frame);
|
|
|
|
/* Convert MAD's numbers to an array of 16-bit LE signed integers */
|
|
/* We skip start_skip number of samples here, this should only happen for
|
|
very first frame in the stream. */
|
|
/* TODO: possible for start_skip to exceed one frames worth of samples? */
|
|
|
|
if (MAD_NCHANNELS(&Frame.header) == 2) {
|
|
if (current_stereo_mode != STEREO_NONINTERLEAVED) {
|
|
ci->configure(DSP_SET_STEREO_MODE, (int *)STEREO_NONINTERLEAVED);
|
|
current_stereo_mode = STEREO_NONINTERLEAVED;
|
|
}
|
|
ci->pcmbuf_insert_split(&Synth.pcm.samples[0][start_skip],
|
|
&Synth.pcm.samples[1][start_skip],
|
|
(Synth.pcm.length - start_skip) * 4);
|
|
} else {
|
|
if (current_stereo_mode != STEREO_MONO) {
|
|
ci->configure(DSP_SET_STEREO_MODE, (int *)STEREO_MONO);
|
|
current_stereo_mode = STEREO_MONO;
|
|
}
|
|
ci->pcmbuf_insert((char *)&Synth.pcm.samples[0][start_skip],
|
|
(Synth.pcm.length - start_skip) * 4);
|
|
}
|
|
start_skip = 0; /* not very elegant, and might want to keep this value */
|
|
|
|
if (Stream.next_frame)
|
|
ci->advance_buffer_loc((void *)Stream.next_frame);
|
|
else
|
|
ci->advance_buffer(size);
|
|
|
|
samplesdone += Synth.pcm.length;
|
|
samplecount -= Synth.pcm.length;
|
|
ci->set_elapsed(samplesdone / (frequency_divider / 10));
|
|
}
|
|
|
|
Stream.error = 0;
|
|
|
|
if (ci->request_next_track())
|
|
goto next_track;
|
|
return CODEC_OK;
|
|
}
|