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Forward seeking fixed. Some comments added.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6700 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Miika Pekkarinen
parent
7dad7d3a6a
commit
d94cba6d0f
3 changed files with 58 additions and 24 deletions
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@ -125,19 +125,19 @@ static volatile int buf_widx;
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#define MAX_TRACK 10
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struct track_info {
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struct mp3entry id3;
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struct mp3info mp3data;
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char *codecbuf;
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size_t codecsize;
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int codectype;
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struct mp3entry id3; /* TAG metadata */
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struct mp3info mp3data; /* MP3 metadata */
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char *codecbuf; /* Pointer to codec buffer */
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size_t codecsize; /* Codec length in bytes */
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int codectype; /* Codec type (example AFMT_MPA_L3) */
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volatile char *filebuf;
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off_t filerem;
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off_t filesize;
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off_t filepos;
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volatile int available;
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bool taginfo_ready;
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int playlist_offset;
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off_t filerem; /* Remaining bytes of file NOT in buffer */
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off_t filesize; /* File total length */
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off_t filepos; /* Read position of file for next buffer fill */
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off_t start_pos; /* Position to first bytes of file in buffer */
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volatile int available; /* Available bytes to read from buffer */
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bool taginfo_ready; /* Is metadata read */
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int playlist_offset; /* File location in playlist */
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};
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/* Track information (count in file buffer, read/write indexes for
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@ -286,7 +286,11 @@ void codec_advance_buffer_callback(size_t amount)
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if ((int)amount > cur_ti->available) {
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codecbufused = 0;
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buf_ridx = buf_widx;
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buf_ridx = 0;
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buf_widx = 0;
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cur_ti->start_pos += amount;
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amount -= cur_ti->available;
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ci.curpos += cur_ti->available;
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cur_ti->available = 0;
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while ((int)amount < cur_ti->available && !ci.stop_codec)
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yield();
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@ -343,7 +347,8 @@ bool codec_seek_buffer_callback(off_t newpos)
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if (ci.curpos - difference < 0)
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difference = ci.curpos;
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if (codecbufused + difference > codecbuflen) {
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if (ci.curpos - difference < cur_ti->start_pos) {
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logf("Seek failed (reload song)");
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/* We need to reload the song. FIX THIS! */
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return false;
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}
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@ -473,8 +478,9 @@ void audio_fill_file_buffer(void)
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fill_bytesleft -= rc;
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}
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tracks[track_widx].filerem -= i;
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codecbufused += i;
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tracks[track_widx].filerem -= i;
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tracks[track_widx].start_pos = tracks[track_widx].filepos;
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tracks[track_widx].filepos += i;
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logf("Done:%d", tracks[track_widx].available);
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if (tracks[track_widx].filerem == 0) {
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@ -653,7 +659,8 @@ bool audio_load_track(int offset, bool start_play, int peek_offset)
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close(fd);
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return false;
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}
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tracks[track_widx].filebuf = &codecbuf[buf_widx];
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// tracks[track_widx].filebuf = &codecbuf[buf_widx];
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tracks[track_widx].start_pos = 0;
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//logf("%s", trackname);
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logf("Buffering track:%d/%d", track_widx, track_ridx);
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@ -681,6 +688,7 @@ bool audio_load_track(int offset, bool start_play, int peek_offset)
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tracks[track_widx].filepos = offset;
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tracks[track_widx].filerem = tracks[track_widx].filesize - offset;
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ci.curpos = offset;
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tracks[track_widx].start_pos = offset;
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} else {
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lseek(fd, 0, SEEK_SET);
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}
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@ -943,7 +951,7 @@ bool audio_load_track(int offset, bool start_play, int peek_offset)
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track_changed = true;
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track_count++;
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i = tracks[track_widx].filepos;
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i = tracks[track_widx].start_pos;
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while (i < size) {
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/* Give codecs some processing time to prevent glitches. */
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yield_codecs();
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@ -20,6 +20,7 @@
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#ifndef _AUDIO_H
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#define _AUDIO_H
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/* Supported file types. */
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#define AFMT_MPA_L1 0x0001 // MPEG Audio layer 1
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#define AFMT_MPA_L2 0x0002 // MPEG Audio layer 2
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#define AFMT_MPA_L3 0x0004 // MPEG Audio layer 3
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@ -36,6 +37,7 @@
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#define AFMT_UNKNOWN 0x1000 // Unknown file format
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#define AFMT_WAVPACK 0x2000 // WavPack
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/* File buffer configuration keys. */
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#define CODEC_SET_FILEBUF_WATERMARK 1
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#define CODEC_SET_FILEBUF_CHUNKSIZE 2
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#define CODEC_SET_FILEBUF_LIMIT 3
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@ -43,32 +45,56 @@
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/* Not yet implemented. */
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#define CODEC_SET_AUDIOBUF_WATERMARK 4
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/* Codec Interface */
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struct codec_api {
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off_t filesize;
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off_t curpos;
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size_t bitspersampe;
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off_t filesize; /* Total file length */
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off_t curpos; /* Current buffer position */
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/* For gapless mp3 */
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struct mp3entry *id3;
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struct mp3info *mp3data;
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bool *taginfo_ready;
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struct mp3entry *id3; /* TAG metadata pointer */
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struct mp3info *mp3data; /* MP3 metadata pointer */
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bool *taginfo_ready; /* Is metadata read */
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/* Codec should periodically check if stop_codec is set to true.
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In case it's, codec must return with PLUGIN_OK status immediately. */
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bool stop_codec;
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/* Codec should periodically check if reload_codec is set to true.
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In case it's, codec should reload itself without exiting. */
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bool reload_codec;
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/* If seek_time != 0, codec should seek to that song position (in ms)
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if codec supports seeking. */
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int seek_time;
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/* Returns buffer to malloc array. Only codeclib should need this. */
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void* (*get_codec_memory)(size_t *size);
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/* Insert PCM data into audio buffer for playback. Playback will start
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automatically. */
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bool (*audiobuffer_insert)(char *data, size_t length);
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/* Set song position in WPS (value in ms). */
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void (*set_elapsed)(unsigned int value);
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/* Read next <size> amount bytes from file buffer to <ptr>.
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Will return number of bytes read or 0 if end of file. */
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size_t (*read_filebuf)(void *ptr, size_t size);
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/* Request pointer to file buffer which can be used to read
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<realsize> amount of data. <reqsize> tells the buffer system
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how much data it should try to allocate. If <realsize> is 0,
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end of file is reached. */
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void* (*request_buffer)(size_t *realsize, size_t reqsize);
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/* Advance file buffer position by <amount> amount of bytes. */
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void (*advance_buffer)(size_t amount);
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/* Advance file buffer to a pointer location inside file buffer. */
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void (*advance_buffer_loc)(void *ptr);
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/* Seek file buffer to position <newpos> beginning of file. */
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bool (*seek_buffer)(off_t newpos);
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/* Calculate mp3 seek position from given time data in ms. */
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off_t (*mp3_get_filepos)(int newtime);
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/* Request file change from file buffer. Returns true is next
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track is available and changed. If return value is false,
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codec should exit immediately with PLUGIN_OK status. */
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bool (*request_next_track)(void);
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/* Configure different codec buffer parameters. */
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void (*configure)(int setting, void *value);
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};
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@ -305,12 +305,12 @@ enum plugin_status plugin_start(struct plugin_api* api, void* parm)
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sample_loc = ci->seek_time/1000 * ci->id3->frequency;
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newpos = ci->mp3_get_filepos(ci->seek_time-1);
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if (ci->seek_buffer(newpos)) {
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ci->seek_time = 0;
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if (sample_loc >= samplecount + samplesdone)
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break ;
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samplecount += samplesdone - sample_loc;
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samplesdone = sample_loc;
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}
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ci->seek_time = 0;
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}
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/* Lock buffers */
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