Add vox (Dialogic telephony formats) codec add. (FS#11021)

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24956 a1c6a512-1295-4272-9138-f99709370657

apps/SOURCES

@@ -189,6 +189,7 @@ metadata/nsf.c
 metadata/oma.c
 metadata/smaf.c
 metadata/au.c
+metadata/vox.c
 #endif
 #ifdef HAVE_TAGCACHE
 tagcache.c

apps/codecs/SOURCES

@@ -29,6 +29,7 @@ speex.c
 adx.c
 smaf.c
 au.c
+vox.c
 #if defined(HAVE_RECORDING) && !defined(SIMULATOR)
 /* encoders */
 aiff_enc.c

apps/codecs/codecs.make

@@ -92,6 +92,7 @@ $(CODECDIR)/aiff.codec : $(CODECDIR)/libpcm.a
 $(CODECDIR)/wav.codec : $(CODECDIR)/libpcm.a
 $(CODECDIR)/smaf.codec : $(CODECDIR)/libpcm.a
 $(CODECDIR)/au.codec : $(CODECDIR)/libpcm.a
+$(CODECDIR)/vox.codec : $(CODECDIR)/libpcm.a
 
 $(CODECS): $(CODECLIB) # this must be last in codec dependency list
 

apps/codecs/vox.c

@@ -0,0 +1,181 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2010 Yoshihisa Uchida
+ *
+ * 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/libpcm/support_formats.h"
+
+CODEC_HEADER
+
+/* vox codec (Dialogic telephony file formats) */
+
+#define PCM_SAMPLE_SIZE (2048)
+
+static int32_t samples[PCM_SAMPLE_SIZE] IBSS_ATTR;
+
+static struct pcm_format format;
+static uint32_t bytesdone;
+
+static uint8_t *read_buffer(size_t *realsize)
+{
+    uint8_t *buffer = (uint8_t *)ci->request_buffer(realsize, format.chunksize);
+    if (bytesdone + (*realsize) > format.numbytes)
+        *realsize = format.numbytes - bytesdone;
+    bytesdone += *realsize;
+    ci->advance_buffer(*realsize);
+    return buffer;
+}
+
+/* this is the codec entry point */
+enum codec_status codec_main(void)
+{
+    int status = CODEC_OK;
+    uint32_t decodedsamples;
+    size_t n;
+    int bufcount;
+    int endofstream;
+    uint8_t *voxbuf;
+    off_t firstblockposn;     /* position of the first block in file */
+    const struct pcm_codec *codec;
+    int offset = 0;
+
+    /* Generic codec initialisation */
+    ci->configure(DSP_SET_SAMPLE_DEPTH, 28);
+  
+next_track:
+    if (codec_init()) {
+        DEBUGF("codec_init() error\n");
+        status = CODEC_ERROR;
+        goto exit;
+    }
+
+    while (!*ci->taginfo_ready && !ci->stop_codec)
+        ci->sleep(1);
+
+    codec_set_replaygain(ci->id3);
+    
+    ci->memset(&format, 0, sizeof(struct pcm_format));
+
+    /* set format */
+    format.channels      = 1;
+    format.bitspersample = 4;
+    format.numbytes      = ci->id3->filesize;
+    format.blockalign    = 1;
+
+    /* advance to first WAVE chunk */
+    ci->advance_buffer(offset);
+
+    firstblockposn = offset;
+
+    decodedsamples = 0;
+    bytesdone = 0;
+
+    /*
+     * get codec
+     * supports dialogic oki adpcm only
+     */
+    codec = get_dialogic_oki_adpcm_codec();
+    if (!codec)
+    {
+        DEBUGF("CODEC_ERROR: dialogic oki adpcm codec does not load.\n");
+        status = CODEC_ERROR;
+        goto done;
+    }
+
+    if (!codec->set_format(&format))
+    {
+        status = CODEC_ERROR;
+        goto done;
+    }
+
+    if (format.numbytes == 0) {
+        DEBUGF("CODEC_ERROR: data size is 0\n");
+        status = CODEC_ERROR;
+        goto done;
+    }
+
+    /* check chunksize */
+    if (format.chunksize * 2 > PCM_SAMPLE_SIZE)
+        format.chunksize = PCM_SAMPLE_SIZE / 2;
+    if (format.chunksize == 0)
+    {
+        DEBUGF("CODEC_ERROR: chunksize is 0\n");
+        status = CODEC_ERROR;
+        goto done;
+    }
+
+    ci->configure(DSP_SWITCH_FREQUENCY, ci->id3->frequency);
+    ci->configure(DSP_SET_STEREO_MODE, STEREO_MONO);
+
+    /* The main decoder loop */
+    endofstream = 0;
+
+    while (!endofstream) {
+        ci->yield();
+        if (ci->stop_codec || ci->new_track) {
+            break;
+        }
+
+        if (ci->seek_time) {
+            struct pcm_pos *newpos = codec->get_seek_pos(ci->seek_time, &read_buffer);
+
+            decodedsamples = newpos->samples;
+            if (newpos->pos > format.numbytes)
+                break;
+            if (ci->seek_buffer(firstblockposn + newpos->pos))
+            {
+                bytesdone = newpos->pos;
+            }
+            ci->seek_complete();
+        }
+
+        voxbuf = (uint8_t *)ci->request_buffer(&n, format.chunksize);
+        if (n == 0)
+            break; /* End of stream */
+        if (bytesdone + n > format.numbytes) {
+            n = format.numbytes - bytesdone;
+            endofstream = 1;
+        }
+
+        status = codec->decode(voxbuf, n, samples, &bufcount);
+        if (status == CODEC_ERROR)
+        {
+            DEBUGF("codec error\n");
+            goto done;
+        }
+
+        ci->pcmbuf_insert(samples, NULL, bufcount);
+        ci->advance_buffer(n);
+        bytesdone += n;
+        decodedsamples += bufcount;
+
+        if (bytesdone >= format.numbytes)
+            endofstream = 1;
+        ci->set_elapsed(decodedsamples*1000LL/ci->id3->frequency);
+    }
+    status = CODEC_OK;
+
+done:
+    if (ci->request_next_track())
+        goto next_track;
+
+exit:
+    return status;
+}

apps/filetypes.c

@@ -104,6 +104,7 @@ static const struct filetype inbuilt_filetypes[] = {
     { "mmf", FILE_ATTR_AUDIO, Icon_Audio, VOICE_EXT_MPA },
     { "au",  FILE_ATTR_AUDIO, Icon_Audio, VOICE_EXT_MPA },
     { "snd", FILE_ATTR_AUDIO, Icon_Audio, VOICE_EXT_MPA },
+    { "vox", FILE_ATTR_AUDIO, Icon_Audio, VOICE_EXT_MPA },
 #endif
     { "m3u", FILE_ATTR_M3U, Icon_Playlist, LANG_PLAYLIST },
     { "m3u8",FILE_ATTR_M3U, Icon_Playlist, LANG_PLAYLIST },

apps/metadata.c

@@ -171,6 +171,9 @@ const struct afmt_entry audio_formats[AFMT_NUM_CODECS] =
     /* Sun Audio file */
     [AFMT_AU] =
         AFMT_ENTRY("AU",  "au",     NULL,          "au\0snd\0"      ),
+    /* VOX (Dialogic telephony file formats) */
+    [AFMT_VOX] =
+        AFMT_ENTRY("VOX",  "vox",   NULL,          "vox\0"      ),
 #endif
 };
 
@@ -470,6 +473,14 @@ bool get_metadata(struct mp3entry* id3, int fd, const char* trackname)
         }
         break;
         
+    case AFMT_VOX:
+        if (!get_vox_metadata(fd, id3))
+        {
+            DEBUGF("get_vox_metadata error\n");
+            return false;
+        }
+        break;
+        
 #endif /* CONFIG_CODEC == SWCODEC */
         
     default:

apps/metadata.h

@@ -80,6 +80,7 @@ enum
     AFMT_OMA_ATRAC3,   /* Atrac3 in Sony OMA container */
     AFMT_SMAF,         /* SMAF */
     AFMT_AU,           /* Sun Audio file */
+    AFMT_VOX,          /* VOX */
 #endif
 
     /* add new formats at any index above this line to have a sensible order -

apps/metadata/metadata_parsers.h

@@ -44,3 +44,4 @@ bool get_nsf_metadata(int fd, struct mp3entry* id3);
 bool get_oma_metadata(int fd, struct mp3entry* id3);
 bool get_smaf_metadata(int fd, struct mp3entry* id3);
 bool get_au_metadata(int fd, struct mp3entry* id3);
+bool get_vox_metadata(int fd, struct mp3entry* id3);

apps/metadata/vox.c

@@ -0,0 +1,43 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2010 Yoshihisa Uchida
+ *
+ * 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 <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <inttypes.h>
+
+#include "system.h"
+#include "metadata.h"
+#include "metadata_common.h"
+#include "metadata_parsers.h"
+#include "logf.h"
+
+bool get_vox_metadata(int fd, struct mp3entry* id3)
+{
+    /* vox is headerless format */
+
+    id3->frequency = 8000;
+    id3->vbr = false;   /* All VOX files are CBR */
+    id3->filesize = filesize(fd);
+    id3->length = ((int64_t) id3->filesize * 2000) / id3->frequency;
+
+    return true;
+}