31b7122867
This complements offset-based resume and playback start funcionality. The implementation is global on both HWCODEC and SWCODEC. Basically, if either the specified elapsed or offset are non-zero, it indicates a mid-track resume. To resume by time only, set elapsed to nonzero and offset to zero. To resume by offset only, set offset to nonzero and elapsed to zero. Which one the codec uses and which has priority is up to the codec; however, using an elapsed time covers more cases: * Codecs not able to use an offset such as VGM or other atomic formats * Starting playback at a nonzero elapsed time from a source that contains no offset, such as a cuesheet The change re-versions pretty much everything from tagcache to nvram. Change-Id: Ic7aebb24e99a03ae99585c5e236eba960d163f38 Reviewed-on: http://gerrit.rockbox.org/516 Reviewed-by: Michael Sevakis <jethead71@rockbox.org> Tested: Michael Sevakis <jethead71@rockbox.org>
263 lines
7.1 KiB
C
263 lines
7.1 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2002 Björn Stenberg
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "codeclib.h"
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#include "libtremor/ivorbisfile.h"
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#include "libtremor/ogg.h"
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#ifdef SIMULATOR
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#include <tlsf.h>
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#endif
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CODEC_HEADER
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#if defined(CPU_ARM) || defined(CPU_COLDFIRE) || defined(CPU_MIPS)
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#include <setjmp.h>
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jmp_buf rb_jump_buf;
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#endif
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/* Some standard functions and variables needed by Tremor */
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static size_t read_handler(void *ptr, size_t size, size_t nmemb, void *datasource)
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{
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(void)datasource;
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return ci->read_filebuf(ptr, nmemb*size);
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}
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static int initial_seek_handler(void *datasource, ogg_int64_t offset, int whence)
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{
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(void)datasource;
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(void)offset;
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(void)whence;
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return -1;
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}
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static int seek_handler(void *datasource, ogg_int64_t offset, int whence)
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{
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(void)datasource;
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if (whence == SEEK_CUR) {
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offset += ci->curpos;
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} else if (whence == SEEK_END) {
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offset += ci->filesize;
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}
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if (ci->seek_buffer(offset)) {
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return 0;
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}
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return -1;
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}
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static int close_handler(void *datasource)
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{
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(void)datasource;
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return 0;
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}
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static long tell_handler(void *datasource)
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{
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(void)datasource;
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return ci->curpos;
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}
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/* This sets the DSP parameters based on the current logical bitstream
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* (sampling rate, number of channels, etc).
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*/
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static bool vorbis_set_codec_parameters(OggVorbis_File *vf)
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{
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vorbis_info *vi;
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vi = ov_info(vf, -1);
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if (vi == NULL) {
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return false;
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}
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ci->configure(DSP_SET_FREQUENCY, ci->id3->frequency);
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codec_set_replaygain(ci->id3);
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if (vi->channels == 2) {
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ci->configure(DSP_SET_STEREO_MODE, STEREO_NONINTERLEAVED);
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} else if (vi->channels == 1) {
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ci->configure(DSP_SET_STEREO_MODE, STEREO_MONO);
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}
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return true;
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}
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/* this is the codec entry point */
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enum codec_status codec_main(enum codec_entry_call_reason reason)
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{
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if (reason == CODEC_LOAD) {
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if (codec_init())
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return CODEC_ERROR;
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ci->configure(DSP_SET_SAMPLE_DEPTH, 24);
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}
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return CODEC_OK;
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}
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/* this is called for each file to process */
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enum codec_status codec_run(void)
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{
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ov_callbacks callbacks;
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OggVorbis_File vf;
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ogg_int32_t **pcm;
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int error = CODEC_ERROR;
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long n;
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int current_section;
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int previous_section;
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ogg_int64_t vf_offsets[2];
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ogg_int64_t vf_dataoffsets;
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ogg_uint32_t vf_serialnos;
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ogg_int64_t vf_pcmlengths[2];
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intptr_t param;
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#if defined(CPU_ARM) || defined(CPU_COLDFIRE) || defined(CPU_MIPS)
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if (setjmp(rb_jump_buf) != 0) {
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/* malloc failed; finish with this track */
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goto done;
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}
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#endif
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ogg_malloc_init();
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/* Create a decoder instance */
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callbacks.read_func = read_handler;
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callbacks.seek_func = initial_seek_handler;
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callbacks.tell_func = tell_handler;
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callbacks.close_func = close_handler;
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ci->seek_buffer(0);
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/* Open a non-seekable stream */
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error = ov_open_callbacks(ci, &vf, NULL, 0, callbacks);
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/* If the non-seekable open was successful, we need to supply the missing
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* data to make it seekable. This is a hack, but it's reasonable since we
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* don't want to run the whole file through the buffer before we start
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* playing. Using Tremor's seekable open routine would cause us to do
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* this, so we pretend not to be seekable at first. Then we fill in the
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* missing fields of vf with 1) information in ci->id3, and 2) info
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* obtained by Tremor in the above ov_open call.
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*
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* Note that this assumes there is only ONE logical Vorbis bitstream in our
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* physical Ogg bitstream. This is verified in metadata.c, well before we
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* get here.
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*/
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if (!error) {
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ogg_free(vf.offsets);
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ogg_free(vf.dataoffsets);
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ogg_free(vf.serialnos);
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vf.offsets = vf_offsets;
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vf.dataoffsets = &vf_dataoffsets;
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vf.serialnos = &vf_serialnos;
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vf.pcmlengths = vf_pcmlengths;
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vf.offsets[0] = 0;
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vf.offsets[1] = ci->id3->filesize;
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vf.dataoffsets[0] = vf.offset;
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vf.pcmlengths[0] = 0;
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vf.pcmlengths[1] = ci->id3->samples;
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vf.serialnos[0] = vf.current_serialno;
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vf.callbacks.seek_func = seek_handler;
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vf.seekable = 1;
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vf.end = ci->id3->filesize;
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vf.ready_state = OPENED;
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vf.links = 1;
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} else {
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DEBUGF("Vorbis: ov_open failed: %d\n", error);
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goto done;
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}
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if (ci->id3->offset) {
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ci->seek_buffer(ci->id3->offset);
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ov_raw_seek(&vf, ci->id3->offset);
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ci->set_offset(ov_raw_tell(&vf));
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}
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else if (ci->id3->elapsed) {
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ov_time_seek(&vf, ci->id3->elapsed);
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}
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ci->set_elapsed(ov_time_tell(&vf));
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previous_section = -1;
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while (1) {
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enum codec_command_action action = ci->get_command(¶m);
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if (action == CODEC_ACTION_HALT)
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break;
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if (action == CODEC_ACTION_SEEK_TIME) {
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if (ov_time_seek(&vf, param)) {
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//ci->logf("ov_time_seek failed");
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}
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ci->set_elapsed(ov_time_tell(&vf));
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ci->seek_complete();
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}
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/* Read host-endian signed 24-bit PCM samples */
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n = ov_read_fixed(&vf, &pcm, 1024, ¤t_section);
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/* Change DSP and buffer settings for this bitstream */
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if (current_section != previous_section) {
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if (!vorbis_set_codec_parameters(&vf)) {
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goto done;
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} else {
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previous_section = current_section;
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}
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}
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if (n == 0) {
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break;
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} else if (n < 0) {
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DEBUGF("Vorbis: Error decoding frame\n");
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} else {
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ci->pcmbuf_insert(pcm[0], pcm[1], n);
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ci->set_offset(ov_raw_tell(&vf));
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ci->set_elapsed(ov_time_tell(&vf));
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}
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}
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error = CODEC_OK;
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done:
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#if 0 /* defined(SIMULATOR) */
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{
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size_t bufsize;
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void* buf = ci->codec_get_buffer(&bufsize);
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DEBUGF("Vorbis: Memory max: %zu\n", get_max_size(buf));
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}
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#endif
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ogg_malloc_destroy();
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/* Clean things up for the next track */
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vf.dataoffsets = NULL;
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vf.offsets = NULL;
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vf.serialnos = NULL;
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vf.pcmlengths = NULL;
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ov_clear(&vf);
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return error;
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}
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