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Commit FS#12069 - Playback rework - first stages. Gives as thorough as possible a treatment of codec management, track change and metadata logic as possible while maintaining fairly narrow focus and not rewriting everything all at once. Please see the rockbox-dev mail archive on 2011-04-25 (Playback engine rework) for a more thorough manifest of what was addressed. Plugins and codecs become incompatible.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29785 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Michael Sevakis 2011-04-27 03:08:23 +00:00
parent dcf0f8de4a
commit c537d5958e
62 changed files with 6047 additions and 4221 deletions
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72
apps/codecs/sid.c
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@ -1203,34 +1203,47 @@ unsigned short LoadSIDFromMemory(void *pSidData, unsigned short *load_addr,
return *load_addr;
}
static int nSamplesRendered = 0;
static int nSamplesPerCall = 882; /* This is PAL SID single speed (44100/50Hz) */
static int nSamplesToRender = 0;
enum codec_status codec_main(void)
/* this is the codec entry point */
enum codec_status codec_main(enum codec_entry_call_reason reason)
{
if (reason == CODEC_LOAD) {
/* Make use of 44.1khz */
ci->configure(DSP_SWITCH_FREQUENCY, 44100);
/* Sample depth is 28 bit host endian */
ci->configure(DSP_SET_SAMPLE_DEPTH, 28);
/* Mono output */
ci->configure(DSP_SET_STEREO_MODE, STEREO_MONO);
}
return CODEC_OK;
}
/* this is called for each file to process */
enum codec_status codec_run(void)
{
unsigned int filesize;
unsigned short load_addr, init_addr, play_addr;
unsigned char subSongsMax, subSong, song_speed;
intptr_t param;
int nSamplesRendered = 0;
int nSamplesPerCall = 882; /* This is PAL SID single speed (44100/50Hz) */
int nSamplesToRender = 0;
next_track:
if (codec_init()) {
return CODEC_ERROR;
}
if (codec_wait_taginfo() != 0)
goto request_next_track;
codec_set_replaygain(ci->id3);
/* Load SID file the read_filebuf callback will return the full requested
* size if at all possible, so there is no need to loop */
* size if at all possible, so there is no need to loop */
ci->seek_buffer(0);
filesize = ci->read_filebuf(sidfile, sizeof(sidfile));
if (filesize == 0)
if (filesize == 0) {
return CODEC_ERROR;
}
c64Init(44100);
LoadSIDFromMemory(sidfile, &load_addr, &init_addr, &play_addr,
@ -1239,37 +1252,30 @@ next_track:
cpuJSR(init_addr, subSong); /* Start the song initialize */
/* Make use of 44.1khz */
ci->configure(DSP_SWITCH_FREQUENCY, 44100);
/* Sample depth is 28 bit host endian */
ci->configure(DSP_SET_SAMPLE_DEPTH, 28);
/* Mono output */
ci->configure(DSP_SET_STEREO_MODE, STEREO_MONO);
/* Set the elapsed time to the current subsong (in seconds) */
ci->set_elapsed(subSong*1000);
/* The main decoder loop */
while (1) {
ci->yield();
if (ci->stop_codec || ci->new_track)
enum codec_command_action action = ci->get_command(&param);
if (action == CODEC_ACTION_HALT)
break;
if (ci->seek_time) {
/* New time is ready in ci->seek_time */
if (action == CODEC_ACTION_SEEK_TIME) {
/* New time is ready in param */
/* Start playing from scratch */
c64Init(44100);
LoadSIDFromMemory(sidfile, &load_addr, &init_addr, &play_addr, &subSongsMax, &subSong, &song_speed, filesize);
sidPoke(24, 15); /* Turn on full volume */
subSong = ci->seek_time / 1000; /* Now use the current seek time in seconds as subsong */
cpuJSR(init_addr, subSong); /* Start the song initialize */
nSamplesToRender = 0; /* Start the rendering from scratch */
ci->seek_complete();
LoadSIDFromMemory(sidfile, &load_addr, &init_addr, &play_addr,
&subSongsMax, &subSong, &song_speed, filesize);
sidPoke(24, 15); /* Turn on full volume */
subSong = param / 1000; /* Now use the current seek time in seconds as subsong */
cpuJSR(init_addr, subSong); /* Start the song initialize */
nSamplesToRender = 0; /* Start the rendering from scratch */
/* Set the elapsed time to the current subsong (in seconds) */
ci->seek_complete();
ci->set_elapsed(subSong*1000);
}
@ -1306,9 +1312,5 @@ next_track:
ci->pcmbuf_insert(samples, NULL, CHUNK_SIZE);
}
request_next_track:
if (ci->request_next_track())
goto next_track;
return CODEC_OK;
}