Add codecs to librbcodec.

Change-Id: Id7f4717d51ed02d67cb9f9cb3c0ada4a81843f97
Reviewed-on: http://gerrit.rockbox.org/137
Reviewed-by: Nils Wallménius <nils@rockbox.org>
Tested-by: Nils Wallménius <nils@rockbox.org>

1 files changed, 0 insertions, 521 deletions

diff --git a/apps/codecs/mpa.c b/apps/codecs/mpa.c
deleted file mode 100644
index f9bf7e6..0000000
--- a/apps/codecs/mpa.c
+++ /dev/null
@@ -1,521 +0,0 @@
-/***************************************************************************
- *             __________               __   ___.
- *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
- *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
- *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
- *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
- *                     \/            \/     \/    \/            \/
- * $Id$
- *
- * Copyright (C) 2005 Dave Chapman
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
- * KIND, either express or implied.
- *
- ****************************************************************************/
-
-#include "codeclib.h"
-#include <codecs/libmad/mad.h>
-#include <inttypes.h>
-
-CODEC_HEADER
-
-#if NUM_CORES > 1 && !defined(MPEGPLAYER)
-#define MPA_SYNTH_ON_COP
-#endif
-
-static struct mad_stream stream IBSS_ATTR;
-static struct mad_frame frame IBSS_ATTR;
-static struct mad_synth synth IBSS_ATTR;
-
-#ifdef MPA_SYNTH_ON_COP
-static volatile short die IBSS_ATTR = 0;          /*thread should die*/
-
-#if (CONFIG_CPU == PP5024) || (CONFIG_CPU == PP5022)
-static mad_fixed_t sbsample_prev[2][36][32] IBSS_ATTR;
-#else
-static mad_fixed_t sbsample_prev[2][36][32] SHAREDBSS_ATTR; 
-#endif
-
-static struct semaphore synth_done_sem IBSS_ATTR;
-static struct semaphore synth_pending_sem IBSS_ATTR;
-#endif
-
-#define INPUT_CHUNK_SIZE   8192
-
-static mad_fixed_t mad_frame_overlap[2][32][18] IBSS_ATTR;
-static mad_fixed_t sbsample[2][36][32] IBSS_ATTR;
-
-static unsigned char mad_main_data[MAD_BUFFER_MDLEN] IBSS_ATTR;
-/* TODO: what latency does layer 1 have? */
-static int mpeg_latency[3] = { 0, 481, 529 };
-static int mpeg_framesize[3] = {384, 1152, 1152};
-
-static void init_mad(void)
-{
-    ci->memset(&stream, 0, sizeof(struct mad_stream));
-    ci->memset(&frame , 0, sizeof(struct mad_frame));
-    ci->memset(&synth , 0, sizeof(struct mad_synth));
-
-#ifdef MPA_SYNTH_ON_COP
-    frame.sbsample_prev = &sbsample_prev;
-    frame.sbsample      = &sbsample;
-#else
-    frame.sbsample_prev = &sbsample;
-    frame.sbsample      = &sbsample;
-#endif
-
-    /* We do this so libmad doesn't try to call codec_calloc(). This needs to
-     * be called before mad_stream_init(), mad_frame_inti() and 
-     * mad_synth_init(). */
-    frame.overlap    = &mad_frame_overlap;
-    stream.main_data = &mad_main_data;
-    
-    /* Call mad initialization. Those will zero the arrays frame.overlap,
-     * frame.sbsample and frame.sbsample_prev. Therefore there is no need to 
-     * zero them here. */
-    mad_stream_init(&stream);
-    mad_frame_init(&frame);
-    mad_synth_init(&synth);
-}
-
-static int get_file_pos(int newtime)
-{
-    int pos = -1;
-    struct mp3entry *id3 = ci->id3;
-
-    if (id3->vbr) {
-        /* Convert newtime and id3->length to seconds to
-         * avoid overflow */
-        unsigned int newtime_s = newtime/1000;
-        unsigned int length_s  = id3->length/1000;
-        
-        if (id3->has_toc) {
-            /* Use the TOC to find the new position */
-            unsigned int percent, remainder;
-            int curtoc, nexttoc, plen;
-
-            percent = (newtime_s*100) / length_s;
-            if (percent > 99)
-                percent = 99;
-
-            curtoc = id3->toc[percent];
-
-            if (percent < 99) {
-                nexttoc = id3->toc[percent+1];
-            } else {
-                nexttoc = 256;
-            }
-
-            pos = (id3->filesize/256)*curtoc;
-
-            /* Use the remainder to get a more accurate position */
-            remainder   = (newtime_s*100) % length_s;
-            remainder   = (remainder*100) / length_s;
-            plen        = (nexttoc - curtoc)*(id3->filesize/256);
-            pos        += (plen/100)*remainder;
-        } else {
-            /* No TOC exists, estimate the new position */
-            pos = (id3->filesize / length_s) * newtime_s;
-        }
-    } else if (id3->bitrate) {
-        pos = newtime * (id3->bitrate / 8);
-    } else {
-        return -1;
-    }
-
-    /* Don't seek right to the end of the file so that we can
-       transition properly to the next song */
-    if (pos >= (int)(id3->filesize - id3->id3v1len))
-        pos = id3->filesize - id3->id3v1len - 1;
-
-    /* id3->filesize excludes id3->first_frame_offset, so add it now */
-    pos += id3->first_frame_offset;
-
-    return pos;
-}
-
-static void set_elapsed(struct mp3entry* id3)
-{
-    unsigned long offset = id3->offset > id3->first_frame_offset ?
-        id3->offset - id3->first_frame_offset : 0;
-    unsigned long elapsed = id3->elapsed;
-
-    if ( id3->vbr ) {
-        if ( id3->has_toc ) {
-            /* calculate elapsed time using TOC */
-            int i;
-            unsigned int remainder, plen, relpos, nextpos;
-
-            /* find wich percent we're at */
-            for (i=0; i<100; i++ )
-                if ( offset < id3->toc[i] * (id3->filesize / 256) )
-                    break;
-
-            i--;
-            if (i < 0)
-                i = 0;
-
-            relpos = id3->toc[i];
-
-            if (i < 99)
-                nextpos = id3->toc[i+1];
-            else
-                nextpos = 256;
-
-            remainder = offset - (relpos * (id3->filesize / 256));
-
-            /* set time for this percent (divide before multiply to prevent
-               overflow on long files. loss of precision is negligible on
-               short files) */
-            elapsed = i * (id3->length / 100);
-
-            /* calculate remainder time */
-            plen = (nextpos - relpos) * (id3->filesize / 256);
-            elapsed += (((remainder * 100) / plen) * (id3->length / 10000));
-        }
-        else {
-            /* no TOC exists. set a rough estimate using average bitrate */
-            int tpk = id3->length /
-                ((id3->filesize - id3->first_frame_offset - id3->id3v1len) /
-                1024);
-            elapsed = offset / 1024 * tpk;
-        }
-    }
-    else
-    {
-        /* constant bitrate, use exact calculation */
-        if (id3->bitrate != 0)
-            elapsed = offset / (id3->bitrate / 8);
-    }
-
-    ci->set_elapsed(elapsed);
-}
-
-#ifdef MPA_SYNTH_ON_COP
-
-/*
- * Run the synthesis filter on the COProcessor 
- */
-
-static int mad_synth_thread_stack[DEFAULT_STACK_SIZE/sizeof(int)] IBSS_ATTR;
-
-static const unsigned char * const mad_synth_thread_name = "mp3dec";
-static unsigned int mad_synth_thread_id = 0;
-
-
-static void mad_synth_thread(void)
-{
-    while(1) {
-        ci->semaphore_release(&synth_done_sem);
-        ci->semaphore_wait(&synth_pending_sem, TIMEOUT_BLOCK);
-        
-        if(die)
-            break;
-
-        mad_synth_frame(&synth, &frame);
-    }    
-}
-
-/* wait for the synth thread to go idle which indicates a PCM frame has been
- * synthesized */
-static inline void mad_synth_thread_wait_pcm(void)
-{
-    ci->semaphore_wait(&synth_done_sem, TIMEOUT_BLOCK);
-}
-
-/* increment the done semaphore - used after a wait for idle to preserve the
- * semaphore count */
-static inline void mad_synth_thread_unwait_pcm(void)
-{
-    ci->semaphore_release(&synth_done_sem);
-}
-
-/* after synth thread has gone idle - switch decoded frames and commence
- * synthesis on it */
-static void mad_synth_thread_ready(void)
-{
-    mad_fixed_t (*temp)[2][36][32];
-
-    /*circular buffer that holds 2 frames' samples*/
-    temp=frame.sbsample;
-    frame.sbsample = frame.sbsample_prev;
-    frame.sbsample_prev=temp;
-
-    ci->semaphore_release(&synth_pending_sem);
-}
-
-static bool mad_synth_thread_create(void)
-{
-    ci->semaphore_init(&synth_done_sem, 1, 0);
-    ci->semaphore_init(&synth_pending_sem, 1, 0);
-       
-    mad_synth_thread_id = ci->create_thread(mad_synth_thread, 
-                            mad_synth_thread_stack,
-                            sizeof(mad_synth_thread_stack), 0,
-                            mad_synth_thread_name 
-                            IF_PRIO(, PRIORITY_PLAYBACK)
-                            IF_COP(, COP));
-    
-    if (mad_synth_thread_id == 0)
-        return false;
-
-    return true;
-}
-
-static void mad_synth_thread_quit(void)
-{
-    /* mop up COP thread */
-    die = 1;
-    ci->semaphore_release(&synth_pending_sem);
-    ci->thread_wait(mad_synth_thread_id);
-    ci->commit_discard_dcache();
-}
-#else
-static inline void mad_synth_thread_ready(void)
-{
-     mad_synth_frame(&synth, &frame);
-}
-
-static inline bool mad_synth_thread_create(void)
-{
-    return true;
-}
-
-static inline void mad_synth_thread_quit(void)
-{
-}
-
-static inline void mad_synth_thread_wait_pcm(void)
-{
-}
-
-static inline void mad_synth_thread_unwait_pcm(void)
-{
-}
-#endif /* MPA_SYNTH_ON_COP */
-
-/* this is the codec entry point */
-enum codec_status codec_main(enum codec_entry_call_reason reason)
-{
-    if (reason == CODEC_LOAD) {
-        /* Create a decoder instance */
-        if (codec_init())
-            return CODEC_ERROR;
-
-        ci->configure(DSP_SET_SAMPLE_DEPTH, MAD_F_FRACBITS);
-
-        /* does nothing on 1 processor systems except return true */
-        if(!mad_synth_thread_create())
-            return CODEC_ERROR;
-    }
-    else if (reason == CODEC_UNLOAD) {
-        /* mop up COP thread - MT only */
-        mad_synth_thread_quit();
-    }
-
-    return CODEC_OK;
-}
-
-/* this is called for each file to process */
-enum codec_status codec_run(void)
-{
-    size_t size;
-    int file_end;
-    int samples_to_skip; /* samples to skip in total for this file (at start) */
-    char *inputbuffer;
-    int64_t samplesdone;
-    int stop_skip, start_skip;
-    int current_stereo_mode = -1;
-    unsigned long current_frequency = 0;
-    int framelength;
-    int padding = MAD_BUFFER_GUARD; /* to help mad decode the last frame */
-    intptr_t param;
-
-    /* Reinitializing seems to be necessary to avoid playback quircks when seeking. */
-    init_mad();
-
-    file_end = 0;
-
-    ci->configure(DSP_SWITCH_FREQUENCY, ci->id3->frequency);
-    current_frequency = ci->id3->frequency;
-    codec_set_replaygain(ci->id3);
-    
-    if (ci->id3->offset) {
-        ci->seek_buffer(ci->id3->offset);
-        set_elapsed(ci->id3);
-    }
-    else
-        ci->seek_buffer(ci->id3->first_frame_offset);
-
-    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];
-    }
-
-    /* Libmad will not decode the last frame without 8 bytes of extra padding
-       in the buffer. So, we can trick libmad into not decoding the last frame
-       if we are to skip it entirely and then cut the appropriate samples from
-       final frame that we did decode. Note, if all tags (ID3, APE) are not
-       properly stripped from the end of the file, this trick will not work. */
-    if (stop_skip >= mpeg_framesize[ci->id3->layer]) {
-        padding = 0;
-        stop_skip -= mpeg_framesize[ci->id3->layer];
-    } else {
-        padding = MAD_BUFFER_GUARD;
-    }
-
-    samplesdone = ((int64_t)ci->id3->elapsed) * current_frequency / 1000;
-
-    /* Don't skip any samples unless we start at the beginning. */
-    if (samplesdone > 0)
-        samples_to_skip = 0;
-    else
-        samples_to_skip = start_skip;
-
-    framelength = 0;
-
-    /* This is the decoding loop. */
-    while (1) {
-        enum codec_command_action action = ci->get_command(&param);
-
-        if (action == CODEC_ACTION_HALT)
-            break;
-
-        if (action == CODEC_ACTION_SEEK_TIME) {
-            int newpos;
-
-            /*make sure the synth thread is idle before seeking - MT only*/
-            mad_synth_thread_wait_pcm();
-            mad_synth_thread_unwait_pcm();
-
-            samplesdone = ((int64_t)param)*current_frequency/1000;
-
-            if (param == 0) {
-                newpos = ci->id3->first_frame_offset;
-                samples_to_skip = start_skip;
-            } else {
-                newpos = get_file_pos(param);
-                samples_to_skip = 0;
-            }
-
-            if (!ci->seek_buffer(newpos))
-            {
-                ci->seek_complete();
-                break;
-            }
-
-            ci->set_elapsed((samplesdone * 1000) / current_frequency);
-            ci->seek_complete();
-            init_mad();
-            framelength = 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, (unsigned char *)inputbuffer,
-                              size + padding);
-        }
-
-        if (mad_frame_decode(&frame, &stream)) {
-            if (stream.error == MAD_ERROR_BUFLEN) {
-                /* This makes the codec support partially corrupted files */
-                if (file_end == 30)
-                    break;
-
-                /* Fill the buffer */
-                if (stream.next_frame)
-                    ci->advance_buffer(stream.next_frame - stream.buffer);
-                else
-                    ci->advance_buffer(size);
-                stream.error = 0; /* Must get new inputbuffer next time */
-                file_end++;
-                continue;
-            } else if (MAD_RECOVERABLE(stream.error)) {
-                /* Probably syncing after a seek */
-                continue;
-            } else {
-                /* Some other unrecoverable error */
-               return CODEC_ERROR;
-            }
-        }
-
-        /* Do the pcmbuf insert here. Note, this is the PREVIOUS frame's pcm
-           data (not the one just decoded above). When we exit the decoding
-           loop we will need to process the final frame that was decoded. */
-        mad_synth_thread_wait_pcm();
-
-        if (framelength > 0) {
-            
-            /* In case of a mono file, the second array will be ignored. */
-            ci->pcmbuf_insert(&synth.pcm.samples[0][samples_to_skip],
-                              &synth.pcm.samples[1][samples_to_skip],
-                              framelength);
-
-            /* Only skip samples for the first frame added. */
-            samples_to_skip = 0;
-        }
-
-        /* Initiate PCM synthesis on the COP (MT) or perform it here (ST) */
-        mad_synth_thread_ready();
-
-        /* Check if sample rate and stereo settings changed in this frame. */
-        if (frame.header.samplerate != current_frequency) {
-            current_frequency = frame.header.samplerate;
-            ci->configure(DSP_SWITCH_FREQUENCY, current_frequency);
-        }
-        if (MAD_NCHANNELS(&frame.header) == 2) {
-            if (current_stereo_mode != STEREO_NONINTERLEAVED) {
-                ci->configure(DSP_SET_STEREO_MODE, STEREO_NONINTERLEAVED);
-                current_stereo_mode = STEREO_NONINTERLEAVED;
-            }
-        } else {
-            if (current_stereo_mode != STEREO_MONO) {
-                ci->configure(DSP_SET_STEREO_MODE, STEREO_MONO);
-                current_stereo_mode = STEREO_MONO;
-            }
-        }
-
-        if (stream.next_frame)
-            ci->advance_buffer(stream.next_frame - stream.buffer);
-        else
-            ci->advance_buffer(size);
-        stream.error = 0; /* Must get new inputbuffer next time */
-        file_end = 0;
-
-        framelength = synth.pcm.length - samples_to_skip;
-        if (framelength < 0) {
-            framelength = 0;
-            samples_to_skip -= synth.pcm.length;
-        }
-
-        samplesdone += framelength;
-        ci->set_elapsed((samplesdone * 1000) / current_frequency);
-    }
-
-    /* wait for synth idle - MT only*/
-    mad_synth_thread_wait_pcm();
-    mad_synth_thread_unwait_pcm();
-
-    /* Finish the remaining decoded frame.
-       Cut the required samples from the end. */
-    if (framelength > stop_skip){
-        ci->pcmbuf_insert(synth.pcm.samples[0], synth.pcm.samples[1],
-                          framelength - stop_skip);
-    }
-
-    return CODEC_OK;
-}