Support for playback of atrac3 audio in rm, in sim.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22311 a1c6a512-1295-4272-9138-f99709370657

apps/codecs/SOURCES

@@ -12,6 +12,7 @@ alac.c
 cook.c
 raac.c
 a52_rm.c
+atrac3_rm.c
 mpc.c
 wma.c
 sid.c

apps/codecs/atrac3_rm.c

@@ -0,0 +1,173 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * Copyright (C) 2009 Mohamed Tarek
+ *
+ * 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 <string.h>
+
+#include "logf.h"
+#include "codeclib.h"
+#include "inttypes.h"
+#include "libatrac/atrac3.h"
+
+CODEC_HEADER
+
+RMContext rmctx;
+RMPacket pkt;
+ATRAC3Context q;
+
+static void init_rm(RMContext *rmctx)
+{
+    memcpy(rmctx, (void*)(( (intptr_t)ci->id3->id3v2buf + 3 ) &~ 3), sizeof(RMContext));
+}
+
+/* this is the codec entry point */
+enum codec_status codec_main(void)
+{ 
+    static size_t buff_size;
+    int datasize, res, consumed, i, time_offset;
+    uint8_t *bit_buffer;
+    int16_t outbuf[2048] __attribute__((aligned(32)));
+    uint16_t fs,sps,h;
+    uint32_t packet_count;
+    int scrambling_unit_size, num_units, elapsed = 0;
+
+next_track:
+    if (codec_init()) {
+        DEBUGF("codec init failed\n");
+        return CODEC_ERROR;
+    }
+    while (!*ci->taginfo_ready && !ci->stop_codec)
+        ci->sleep(1);
+
+    codec_set_replaygain(ci->id3);
+    ci->memset(&rmctx,0,sizeof(RMContext));
+    ci->memset(&pkt,0,sizeof(RMPacket));
+    ci->memset(&q,0,sizeof(ATRAC3Context));
+
+    init_rm(&rmctx);
+ 
+    ci->configure(DSP_SET_FREQUENCY, ci->id3->frequency);
+    ci->configure(DSP_SET_SAMPLE_DEPTH, 16);
+    ci->configure(DSP_SET_STEREO_MODE, rmctx.nb_channels == 1 ?
+                  STEREO_MONO : STEREO_INTERLEAVED);
+
+    packet_count = rmctx.nb_packets;
+    rmctx.audio_framesize = rmctx.block_align;
+    rmctx.block_align = rmctx.sub_packet_size;
+    fs = rmctx.audio_framesize;
+    sps= rmctx.block_align;
+    h = rmctx.sub_packet_h;
+    scrambling_unit_size = h*fs;
+    
+    res =atrac3_decode_init(&q, &rmctx);
+    if(res < 0) {
+        DEBUGF("failed to initialize atrac decoder\n");
+        return CODEC_ERROR;
+    }
+
+    ci->set_elapsed(0);
+    ci->advance_buffer(rmctx.data_offset + DATA_HEADER_SIZE);
+
+    /* The main decoder loop */  
+seek_start :         
+    while((unsigned)elapsed < rmctx.duration)
+    {  
+        bit_buffer = (uint8_t *) ci->request_buffer(&buff_size, scrambling_unit_size);
+        consumed = rm_get_packet(&bit_buffer, &rmctx, &pkt);
+        if(consumed < 0) {
+            DEBUGF("rm_get_packet failed\n");
+            return CODEC_ERROR;
+        }
+       
+        for(i = 0; i < rmctx.audio_pkt_cnt*(fs/sps) ; i++)
+        { 
+            ci->yield();
+            if (ci->stop_codec || ci->new_track)
+                goto done;
+
+            if (ci->seek_time) {
+                ci->set_elapsed(ci->seek_time);
+
+                /* Do not allow seeking beyond the file's length */
+                if ((unsigned) ci->seek_time > ci->id3->length) {
+                    ci->seek_complete();
+                    goto done;
+                }       
+
+                ci->seek_buffer(rmctx.data_offset + DATA_HEADER_SIZE);
+                packet_count = rmctx.nb_packets;
+                rmctx.audio_pkt_cnt = 0;
+                rmctx.frame_number = 0;
+
+                /* Seek to the start of the track */
+                if (ci->seek_time == 1) {
+                    ci->set_elapsed(0);
+                    ci->seek_complete();
+                    goto seek_start;           
+                }                                                                
+                num_units = ((ci->seek_time)/(sps*1000*8/rmctx.bit_rate))/(h*(fs/sps));                    
+                ci->seek_buffer(rmctx.data_offset + DATA_HEADER_SIZE + consumed * num_units);
+                bit_buffer = (uint8_t *) ci->request_buffer(&buff_size, scrambling_unit_size);
+                consumed = rm_get_packet(&bit_buffer, &rmctx, &pkt);
+                if(consumed < 0) {
+                     DEBUGF("rm_get_packet failed\n");
+                     return CODEC_ERROR;
+                } 
+                packet_count = rmctx.nb_packets - rmctx.audio_pkt_cnt * num_units;
+                rmctx.frame_number = ((ci->seek_time)/(sps*1000*8/rmctx.bit_rate)); 
+                while(rmctx.audiotimestamp > (unsigned) ci->seek_time) {
+                    rmctx.audio_pkt_cnt = 0;
+                    ci->seek_buffer(rmctx.data_offset + DATA_HEADER_SIZE + consumed * (num_units-1));
+                    bit_buffer = (uint8_t *) ci->request_buffer(&buff_size, scrambling_unit_size); 
+                    consumed = rm_get_packet(&bit_buffer, &rmctx, &pkt);                                                                             
+                    packet_count += rmctx.audio_pkt_cnt;
+                    num_units--;
+                }
+                time_offset = ci->seek_time - rmctx.audiotimestamp;
+                i = (time_offset/((sps * 8 * 1000)/rmctx.bit_rate));
+                elapsed = rmctx.audiotimestamp+(1000*8*sps/rmctx.bit_rate)*i;
+                ci->set_elapsed(elapsed);
+                ci->seek_complete(); 
+            }
+            if(pkt.length)    
+                res = atrac3_decode_frame(&rmctx,&q, outbuf, &datasize, pkt.frames[i], rmctx.block_align);
+            else /* indicates that there are no remaining frames */
+                goto done;
+
+            if(res != rmctx.block_align) {
+                DEBUGF("codec error\n");
+                return CODEC_ERROR;
+            }
+
+            if(datasize)
+                ci->pcmbuf_insert(outbuf, NULL, q.samples_per_frame / rmctx.nb_channels);
+            elapsed = rmctx.audiotimestamp+(1000*8*sps/rmctx.bit_rate)*i;
+            ci->set_elapsed(elapsed);
+            rmctx.frame_number++;
+        }
+        packet_count -= rmctx.audio_pkt_cnt;
+        rmctx.audio_pkt_cnt = 0;
+        ci->advance_buffer(consumed);
+    }
+
+    done :
+    if (ci->request_next_track())
+        goto next_track;
+
+    return CODEC_OK;    
+}

apps/codecs/codecs.make

@@ -35,6 +35,7 @@ include $(APPSDIR)/codecs/libwavpack/libwavpack.make
 include $(APPSDIR)/codecs/libwma/libwma.make
 include $(APPSDIR)/codecs/libcook/libcook.make
 include $(APPSDIR)/codecs/librm/librm.make
+include $(APPSDIR)/codecs/libatrac/libatrac.make
 
 # compile flags for codecs
 CODECFLAGS = $(CFLAGS) -I$(APPSDIR)/codecs -I$(APPSDIR)/codecs/lib \
@@ -50,6 +51,7 @@ CODEC_CRT0 := $(CODECDIR)/codec_crt0.o
 CODECLIBS := $(DEMACLIB) $(A52LIB) $(ALACLIB) $(ASAPLIB) \
 	$(FAADLIB) $(FFMPEGFLACLIB) $(M4ALIB) $(MADLIB) $(MUSEPACKLIB) \
 	$(SPCLIB) $(SPEEXLIB) $(TREMORLIB) $(WAVPACKLIB) $(WMALIB) $(COOKLIB) \
+	$(ATRACLIB) \
 	$(CODECLIB)
 
 $(CODECS): $(CODEC_CRT0) $(CODECLINK_LDS) 
@@ -78,6 +80,7 @@ $(CODECDIR)/asap.codec : $(CODECDIR)/libasap.a
 $(CODECDIR)/cook.codec : $(CODECDIR)/libcook.a $(CODECDIR)/librm.a
 $(CODECDIR)/raac.codec : $(CODECDIR)/libfaad.a $(CODECDIR)/librm.a
 $(CODECDIR)/a52_rm.codec : $(CODECDIR)/liba52.a $(CODECDIR)/librm.a
+$(CODECDIR)/atrac3_rm.codec : $(CODECDIR)/libatrac.a $(CODECDIR)/librm.a
 
 $(CODECS): $(CODECLIB) # this must be last in codec dependency list
 

apps/codecs/libatrac/SOURCES

@@ -0,0 +1,3 @@
+atrac3.c
+fixp_math.c
+bitstream.c

apps/codecs/libatrac/atrac3.c

@@ -45,7 +45,10 @@
 #define JOINT_STEREO    0x12
 #define STEREO          0x2
 
-#define AVERROR(...) -1
+#ifdef ROCKBOX
+#undef DEBUGF
+#define DEBUGF(...)
+#endif /* ROCKBOX */
 
 /* FFMAX/MIN/SWAP and av_clip were taken from libavutil/common.h */
 #define FFMAX(a,b) ((a) > (b) ? (a) : (b))
@@ -76,7 +79,7 @@ static channel_unit     channel_units[2];
  */
 static void iqmf (int32_t *inlo, int32_t *inhi, unsigned int nIn, int32_t *pOut, int32_t *delayBuf, int32_t *temp)
 {
-    int   i, j;
+    unsigned int   i, j;
     int32_t   *p1, *p3;
 
     memcpy(temp, delayBuf, 46*sizeof(int32_t));
@@ -163,7 +166,7 @@ static int decode_bytes(const uint8_t* inbuffer, uint8_t* out, int bytes){
     const uint32_t* buf;
     uint32_t* obuf = (uint32_t*) out;
 
-#ifdef TEST
+#if ((defined(TEST) || defined(SIMULATOR)) && !defined(CPU_ARM))
     off = 0; //no check for memory alignment of inbuffer
 #else
     off = (intptr_t)inbuffer & 3;
@@ -175,14 +178,16 @@ static int decode_bytes(const uint8_t* inbuffer, uint8_t* out, int bytes){
     for (i = 0; i < bytes/4; i++)
         obuf[i] = c ^ buf[i];
 
-    if (off)
+    if (off) {
         DEBUGF("Offset of %d not handled, post sample on ffmpeg-dev.\n",off);
+        return off;
+    }
 
     return off;
 }
 
 
-static void init_atrac3_transforms(ATRAC3Context *q) {
+static void init_atrac3_transforms() {
     int32_t s;
     int i;
 
@@ -630,7 +635,7 @@ static void channelWeighting (int32_t *su1, int32_t *su2, int *p3)
  */
 
 
-static int decodeChannelSoundUnit (ATRAC3Context *q, GetBitContext *gb, channel_unit *pSnd, int32_t *pOut, int channelNum, int codingMode)
+static int decodeChannelSoundUnit (GetBitContext *gb, channel_unit *pSnd, int32_t *pOut, int channelNum, int codingMode)
 {
     int   band, result=0, numSubbands, lastTonal, numBands;
     if (codingMode == JOINT_STEREO && channelNum == 1) {
@@ -705,7 +710,7 @@ static int decodeFrame(ATRAC3Context *q, const uint8_t* databuf)
         /* decode Sound Unit 1 */
         init_get_bits(&q->gb,databuf,q->bits_per_frame);
 
-        result = decodeChannelSoundUnit(q,&q->gb, q->pUnits, q->outSamples, 0, JOINT_STEREO);
+        result = decodeChannelSoundUnit(&q->gb, q->pUnits, q->outSamples, 0, JOINT_STEREO);
         if (result != 0)
             return (result);
 
@@ -746,7 +751,7 @@ static int decodeFrame(ATRAC3Context *q, const uint8_t* databuf)
         }
 
         /* Decode Sound Unit 2. */
-        result = decodeChannelSoundUnit(q,&q->gb, &q->pUnits[1], &q->outSamples[1024], 1, JOINT_STEREO);
+        result = decodeChannelSoundUnit(&q->gb, &q->pUnits[1], &q->outSamples[1024], 1, JOINT_STEREO);
         if (result != 0)
             return (result);
 
@@ -763,7 +768,7 @@ static int decodeFrame(ATRAC3Context *q, const uint8_t* databuf)
             /* Set the bitstream reader at the start of a channel sound unit. */
             init_get_bits(&q->gb, databuf+((i*q->bytes_per_frame)/q->channels), (q->bits_per_frame)/q->channels);
 
-            result = decodeChannelSoundUnit(q,&q->gb, &q->pUnits[i], &q->outSamples[i*1024], i, q->codingMode);
+            result = decodeChannelSoundUnit(&q->gb, &q->pUnits[i], &q->outSamples[i*1024], i, q->codingMode);
             if (result != 0)
                 return (result);
         }
@@ -943,7 +948,7 @@ int atrac3_decode_init(ATRAC3Context *q, RMContext *rmctx)
 
     }
 
-    init_atrac3_transforms(q);
+    init_atrac3_transforms();
 
     /* init the joint-stereo decoding data */
     q->weighting_delay[0] = 0;

apps/codecs/libatrac/atrac3data.h

@@ -28,7 +28,7 @@
 #ifndef AVCODEC_ATRAC3DATA_H
 #define AVCODEC_ATRAC3DATA_H
 
-#include <stdint.h>
+#include <inttypes.h>
 
 /* VLC tables */
 

apps/codecs/libatrac/libatrac.make

@@ -0,0 +1,18 @@
+#             __________               __   ___.
+#   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+#   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+#   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+#   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+#                     \/            \/     \/    \/            \/
+# $Id: libatrac.make 20151 2009-03-01 09:04:15Z amiconn $
+#
+
+# libatrac
+ATRACLIB := $(CODECDIR)/libatrac.a
+ATRACLIB_SRC := $(call preprocess, $(APPSDIR)/codecs/libatrac/SOURCES)
+ATRACLIB_OBJ := $(call c2obj, $(ATRACLIB_SRC))
+OTHER_SRC += $(ATRACLIB_SRC)
+
+$(ATRACLIB): $(ATRACLIB_OBJ)
+	$(SILENT)$(shell rm -f $@)
+	$(call PRINTS,AR $(@F))$(AR) rcs $@ $^ >/dev/null

apps/metadata.c

@@ -124,6 +124,9 @@ const struct afmt_entry audio_formats[AFMT_NUM_CODECS] =
     /* AC3 in RM/RA */
     [AFMT_RM_AC3] =
         AFMT_ENTRY("AC3",   "a52_rm",     NULL,        "rm\0ra\0rmvb\0"      ),
+    /* ATRAC3 in RM/RA */
+    [AFMT_RM_ATRAC3] =
+        AFMT_ENTRY("ATRAC3","atrac3_rm",  NULL,        "rm\0ra\0rmvb\0"      ),
 #endif
 };
 

apps/metadata.h

@@ -64,6 +64,7 @@ enum
     AFMT_RM_COOK,      /* Cook in RM/RA */
     AFMT_RM_AAC,       /* AAC in RM/RA */
     AFMT_RM_AC3,       /* AC3 in RM/RA */
+    AFMT_RM_ATRAC3,    /* ATRAC3 in RM/RA */
 #endif
 
     /* add new formats at any index above this line to have a sensible order -

apps/metadata/rm.c

@@ -182,6 +182,14 @@ static inline int real_read_audio_stream_info(int fd, RMContext *rmctx)
                rmctx->codec_type = CODEC_AC3;
                break;
 
+           case FOURCC('a','t','r','c'):  
+               rmctx->codec_type = CODEC_ATRAC;
+               read_uint32be(fd, &rmctx->extradata_size);
+               skipped += 4;
+               read(fd, rmctx->codec_extradata, rmctx->extradata_size);
+               skipped += rmctx->extradata_size;
+               break;
+
            default: /* Not a supported codec */
                return -1;
        }
@@ -421,7 +429,7 @@ bool get_rm_metadata(int fd, struct mp3entry* id3)
             break;
         
         case CODEC_ATRAC:
-        /* Not yet supported in rockbox, parsing fails before reaching here */
+            id3->codectype = AFMT_RM_ATRAC3;
             break;
     }