1 files changed, 229 insertions, 0 deletions

diff --git a/apps/plugins/flac2wav.c b/apps/plugins/flac2wav.c
new file mode 100644
index 0000000000..6fa7940535
--- /dev/null
+++ b/apps/plugins/flac2wav.c
@@ -0,0 +1,229 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2002 Björn Stenberg
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include "plugin.h"
+
+#if (CONFIG_HWCODEC == MASNONE) && !defined(SIMULATOR)
+/* software codec platforms, not for simulator */
+
+#include <codecs/libFLAC/include/FLAC/seekable_stream_decoder.h>
+
+#include "lib/xxx2wav.h" /* Helper functions common to test decoders */
+
+#define FLAC_MAX_SUPPORTED_BLOCKSIZE 4608
+#define FLAC_MAX_SUPPORTED_CHANNELS  2
+
+static struct plugin_api* rb;
+
+/* Called when the FLAC decoder needs some FLAC data to decode */
+FLAC__SeekableStreamDecoderReadStatus flac_read_handler(const FLAC__SeekableStreamDecoder *dec, 
+ FLAC__byte buffer[], unsigned *bytes, void *data)
+{   (void)dec;
+
+    file_info_struct *p = (file_info_struct *) data;
+
+    if (p->curpos >= p->filesize) {
+      return FLAC__STREAM_DECODER_READ_STATUS_END_OF_STREAM;
+    }
+
+    rb->memcpy(buffer,&filebuf[p->curpos],*bytes);
+    p->curpos+=*bytes;
+  
+    return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE;
+}
+
+/* Called when the FLAC decoder has some decoded PCM data to write */
+FLAC__StreamDecoderWriteStatus flac_write_handler(const FLAC__SeekableStreamDecoder *dec, 
+                                                  const FLAC__Frame *frame, 
+                                                  const FLAC__int32 * const buf[], 
+                                                  void *data)
+{
+    unsigned int c_samp, c_chan, d_samp;
+    file_info_struct *p = (file_info_struct *) data;
+    uint32_t data_size = frame->header.blocksize * frame->header.channels * (p->bitspersample / 8);
+    uint32_t samples = frame->header.blocksize;
+
+    // FIXME: This should not be on the stack!
+    static unsigned char ldb[FLAC_MAX_SUPPORTED_BLOCKSIZE*FLAC_MAX_SUPPORTED_CHANNELS*2];
+
+    if (samples*frame->header.channels > (FLAC_MAX_SUPPORTED_BLOCKSIZE*FLAC_MAX_SUPPORTED_CHANNELS)) {
+      // ERROR!!!
+#ifdef SIMULATOR
+      fprintf(stderr,"ERROR: samples*frame->header.channels=%d\n",samples*frame->header.channels);
+#endif
+      return(FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE);
+    }
+
+    (void)dec;
+    (void)data_size;
+    for(c_samp = d_samp = 0; c_samp < samples; c_samp++) {
+        for(c_chan = 0; c_chan < frame->header.channels; c_chan++, d_samp++) {
+            ldb[d_samp*2] = buf[c_chan][c_samp]&0xff;
+            ldb[(d_samp*2)+1] = (buf[c_chan][c_samp]&0xff00)>>8;
+        }
+    } 
+
+    rb->write(p->outfile,ldb,data_size);
+
+    p->current_sample += samples;
+
+    return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
+}
+
+void flac_metadata_handler(const FLAC__SeekableStreamDecoder *dec, 
+                           const FLAC__StreamMetadata *meta, void *data)
+{
+    file_info_struct *p = (file_info_struct *) data;
+    (void)dec;
+
+    if(meta->type == FLAC__METADATA_TYPE_STREAMINFO) {
+        p->bitspersample = meta->data.stream_info.bits_per_sample;
+        p->samplerate = meta->data.stream_info.sample_rate;
+        p->channels = meta->data.stream_info.channels;
+//      FLAC__ASSERT(meta->data.stream_info.total_samples < 0x100000000); /* we can handle < 4 gigasamples */
+        p->total_samples = (unsigned) 
+            (meta->data.stream_info.total_samples & 0xffffffff);
+        p->current_sample = 0;
+    }
+}
+
+
+void flac_error_handler(const FLAC__SeekableStreamDecoder *dec, 
+                        FLAC__StreamDecoderErrorStatus status, void *data)
+{
+    (void)dec;
+    (void)status;
+    (void)data;
+}
+
+FLAC__SeekableStreamDecoderSeekStatus flac_seek_handler (const FLAC__SeekableStreamDecoder *decoder, 
+                                                         FLAC__uint64 absolute_byte_offset,
+                                                         void *client_data)
+{
+  (void)decoder;
+  file_info_struct *p = (file_info_struct *) client_data;
+  rb->lseek(p->infile,SEEK_SET,absolute_byte_offset);
+  return(FLAC__SEEKABLE_STREAM_DECODER_SEEK_STATUS_OK);
+}
+
+FLAC__SeekableStreamDecoderTellStatus flac_tell_handler (const FLAC__SeekableStreamDecoder *decoder, 
+                                                         FLAC__uint64 *absolute_byte_offset, void *client_data)
+{ 
+  file_info_struct *p = (file_info_struct *) client_data;
+
+  (void)decoder;
+  *absolute_byte_offset=rb->lseek(p->infile,SEEK_CUR,0);
+  return(FLAC__SEEKABLE_STREAM_DECODER_TELL_STATUS_OK);
+}
+
+FLAC__SeekableStreamDecoderLengthStatus flac_length_handler (const FLAC__SeekableStreamDecoder *decoder, 
+                                                         FLAC__uint64 *stream_length, void *client_data)
+{
+  file_info_struct *p = (file_info_struct *) client_data;
+
+  (void)decoder;
+  *stream_length=p->filesize;
+  return(FLAC__SEEKABLE_STREAM_DECODER_LENGTH_STATUS_OK);
+}
+
+FLAC__bool flac_eof_handler (const FLAC__SeekableStreamDecoder *decoder, 
+                             void *client_data)
+{
+  file_info_struct *p = (file_info_struct *) client_data;
+
+  (void)decoder;
+  if (p->curpos >= p->filesize) {
+    return(true);
+  } else {
+    return(false);
+  }
+}
+
+
+/* this is the plugin entry point */
+enum plugin_status plugin_start(struct plugin_api* api, void* file)
+{
+  FLAC__SeekableStreamDecoder* flacDecoder;
+  file_info_struct file_info;
+
+  TEST_PLUGIN_API(api);
+
+  /* if you are using a global api pointer, don't forget to copy it!
+     otherwise you will get lovely "I04: IllInstr" errors... :-) */
+  rb = api;
+
+
+  /* This function sets up the buffers and reads the file into RAM */
+
+  if (local_init(file,"/flactest.wav",&file_info,api)) {
+    return PLUGIN_ERROR;
+  }
+
+  /* Create a decoder instance */
+
+  flacDecoder=FLAC__seekable_stream_decoder_new();
+
+  /* Set up the decoder and the callback functions - this must be done before init */
+
+  /* The following are required for stream_decoder and higher */
+  FLAC__seekable_stream_decoder_set_client_data(flacDecoder,&file_info);
+  FLAC__seekable_stream_decoder_set_write_callback(flacDecoder, flac_write_handler);
+  FLAC__seekable_stream_decoder_set_read_callback(flacDecoder, flac_read_handler);
+  FLAC__seekable_stream_decoder_set_metadata_callback(flacDecoder, flac_metadata_handler);
+  FLAC__seekable_stream_decoder_set_error_callback(flacDecoder, flac_error_handler);
+  FLAC__seekable_stream_decoder_set_metadata_respond(flacDecoder, FLAC__METADATA_TYPE_STREAMINFO);
+
+  /* The following are only for the seekable_stream_decoder */
+  FLAC__seekable_stream_decoder_set_seek_callback(flacDecoder, flac_seek_handler);
+  FLAC__seekable_stream_decoder_set_tell_callback(flacDecoder, flac_tell_handler);
+  FLAC__seekable_stream_decoder_set_length_callback(flacDecoder, flac_length_handler);
+  FLAC__seekable_stream_decoder_set_eof_callback(flacDecoder, flac_eof_handler);
+
+  if (FLAC__seekable_stream_decoder_init(flacDecoder)) {
+    return PLUGIN_ERROR;
+  }
+
+  /* The first thing to do is to parse the metadata */
+  FLAC__seekable_stream_decoder_process_until_end_of_metadata(flacDecoder);
+
+  file_info.frames_decoded=0;
+  file_info.start_tick=*(rb->current_tick);
+  while (FLAC__seekable_stream_decoder_get_state(flacDecoder)!=2) {
+    FLAC__seekable_stream_decoder_process_single(flacDecoder);
+    file_info.frames_decoded++;
+
+    display_status(&file_info);
+
+    if (rb->button_get(false)!=BUTTON_NONE) {
+      close_wav(&file_info);
+      return PLUGIN_OK;
+    }
+  }
+
+  close_wav(&file_info);
+  rb->splash(HZ*2, true, "FINISHED!");
+
+  /* Flush internal buffers etc */
+//No need for this.  flacResult=FLAC__seekable_stream_decoder_reset(flacDecoder);
+
+  //  audio_close();
+
+  return PLUGIN_OK;
+}
+#endif /* CONFIG_HWCODEC == MASNONE */