/* this is called for each file to process */
enum codec_status codec_run(void)
{
int error = CODEC_ERROR;
SpeexBits bits;
int eof = 0;
spx_ogg_sync_state oy;
spx_ogg_page og;
spx_ogg_packet op;
spx_ogg_stream_state os;
spx_int64_t page_granule = 0;
spx_int64_t cur_granule = 0;
int enh_enabled = 1;
int nframes = 2;
int eos = 0;
SpeexStereoState *stereo;
int channels = -1;
int samplerate = ci->id3->frequency;
int extra_headers = 0;
int stream_init = 0;
/* rockbox: comment 'set but unused' variables
int page_nb_packets;
*/
int frame_size;
int packet_count = 0;
int lookahead;
int headerssize = 0;
unsigned long strtoffset = ci->id3->offset;
void *st = NULL;
int j = 0;
intptr_t param;
memset(&bits, 0, sizeof(bits));
memset(&oy, 0, sizeof(oy));
/* Ogg handling still uses mallocs, so reset the malloc buffer per track */
if (codec_init()) {
goto exit;
}
ci->seek_buffer(0);
ci->set_elapsed(0);
stereo = speex_stereo_state_init();
spx_ogg_sync_init(&oy);
spx_ogg_alloc_buffer(&oy,2*CHUNKSIZE);
codec_set_replaygain(ci->id3);
eof = 0;
while (!eof) {
enum codec_command_action action = ci->get_command(¶m);
if (action == CODEC_ACTION_HALT)
break;
/*seek (seeks to the page before the position) */
if (action == CODEC_ACTION_SEEK_TIME) {
if(samplerate!=0&&packet_count>1){
LOGF("Speex seek page:%lld,%lld,%ld,%lld,%d\n",
((spx_int64_t)param/1000) *
(spx_int64_t)samplerate,
page_granule, param,
(page_granule/samplerate)*1000, samplerate);
speex_seek_page_granule(((spx_int64_t)param/1000) *
(spx_int64_t)samplerate,
page_granule, &oy, headerssize);
}
ci->set_elapsed(param);
ci->seek_complete();
}
next_page:
/*Get the ogg buffer for writing*/
if(get_more_data(&oy)<1){/*read error*/
goto done;
}
/* Loop for all complete pages we got (most likely only one) */
while (spx_ogg_sync_pageout(&oy, &og) == 1) {
int packet_no;
if (stream_init == 0) {
spx_ogg_stream_init(&os, spx_ogg_page_serialno(&og));
stream_init = 1;
}
/* Add page to the bitstream */
spx_ogg_stream_pagein(&os, &og);
page_granule = spx_ogg_page_granulepos(&og);
/* page_nb_packets = spx_ogg_page_packets(&og); */
cur_granule = page_granule;
/* Extract all available packets */
packet_no=0;
while (!eos && spx_ogg_stream_packetout(&os, &op)==1){
/* If first packet, process as Speex header */
if (packet_count==0){
st = process_header(&op, enh_enabled, &frame_size,
&samplerate, &nframes, &channels,
stereo, &extra_headers);
speex_decoder_ctl(st, SPEEX_GET_LOOKAHEAD, &lookahead);
if (!nframes)
nframes=1;
if (!st){
goto done;
}
ci->configure(DSP_SET_FREQUENCY, ci->id3->frequency);
ci->configure(DSP_SET_SAMPLE_DEPTH, 16);
if (channels == 2) {
ci->configure(DSP_SET_STEREO_MODE, STEREO_INTERLEAVED);
} else if (channels == 1) {
ci->configure(DSP_SET_STEREO_MODE, STEREO_MONO);
}
/* Speex header in its own page, add the whole page
headersize */
headerssize += og.header_len+og.body_len;
} else if (packet_count<=1+extra_headers){
/* add packet to headersize */
headerssize += op.bytes;
/* Ignore extra headers */
} else {
if (packet_count <= 2+extra_headers) {
if (strtoffset) {
ci->seek_buffer(strtoffset);
spx_ogg_sync_reset(&oy);
packet_count++;
goto next_page;
}
}
packet_no++;
if (op.e_o_s) /* End of stream condition */
eos=1;
/* Set Speex bitstream to point to Ogg packet */
speex_bits_set_bit_buffer(&bits, (char *)op.packet,
op.bytes);
for (j = 0; j != nframes; j++){
int ret;
/* Decode frame */
ret = speex_decode_int(st, &bits, output);
if (ret == -1)
break;
if (ret == -2)
break;
if (speex_bits_remaining(&bits) < 0)
break;
if (channels == 2)
speex_decode_stereo_int(output, frame_size, stereo);
if (frame_size > 0) {
spx_int16_t *frame_start = output + lookahead;
if (channels == 2)
frame_start += lookahead;
ci->pcmbuf_insert(frame_start, NULL,
frame_size - lookahead);
lookahead = 0;
/* 2 bytes/sample */
cur_granule += frame_size / 2;
ci->set_offset((long) ci->curpos);
ci->set_elapsed((samplerate == 0) ? 0 :
cur_granule * 1000 / samplerate);
}
}
}
packet_count++;
}
}
}
error = CODEC_OK;
done:
/* Clean things up for the next track */
speex_bits_destroy(&bits);
if (st)
speex_decoder_destroy(st);
if (stream_init)
spx_ogg_stream_destroy(&os);
spx_ogg_sync_destroy(&oy);
exit:
return error;
}
bool OggSpeexDecoder::Open(CFErrorRef *error)
{
if(IsOpen()) {
LOGGER_WARNING("org.sbooth.AudioEngine.AudioDecoder.OggSpeex", "Open() called on an AudioDecoder that is already open");
return true;
}
// Ensure the input source is open
if(!mInputSource->IsOpen() && !mInputSource->Open(error))
return false;
// Initialize Ogg data struct
ogg_sync_init(&mOggSyncState);
// Get the ogg buffer for writing
char *data = ogg_sync_buffer(&mOggSyncState, READ_SIZE_BYTES);
// Read bitstream from input file
ssize_t bytesRead = GetInputSource()->Read(data, READ_SIZE_BYTES);
if(-1 == bytesRead) {
if(error) {
CFMutableDictionaryRef errorDictionary = CFDictionaryCreateMutable(kCFAllocatorDefault,
0,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
CFStringRef displayName = CreateDisplayNameForURL(mInputSource->GetURL());
CFStringRef errorString = CFStringCreateWithFormat(kCFAllocatorDefault,
NULL,
CFCopyLocalizedString(CFSTR("The file “%@” could not be read."), ""),
displayName);
CFDictionarySetValue(errorDictionary,
kCFErrorLocalizedDescriptionKey,
errorString);
CFDictionarySetValue(errorDictionary,
kCFErrorLocalizedFailureReasonKey,
CFCopyLocalizedString(CFSTR("Read error"), ""));
CFDictionarySetValue(errorDictionary,
kCFErrorLocalizedRecoverySuggestionKey,
CFCopyLocalizedString(CFSTR("Unable to read from the input file."), ""));
CFRelease(errorString), errorString = NULL;
CFRelease(displayName), displayName = NULL;
*error = CFErrorCreate(kCFAllocatorDefault,
AudioDecoderErrorDomain,
AudioDecoderInputOutputError,
errorDictionary);
CFRelease(errorDictionary), errorDictionary = NULL;
}
ogg_sync_destroy(&mOggSyncState);
return false;
}
// Tell the sync layer how many bytes were written to its internal buffer
int result = ogg_sync_wrote(&mOggSyncState, bytesRead);
if(-1 == result) {
if(error) {
CFMutableDictionaryRef errorDictionary = CFDictionaryCreateMutable(kCFAllocatorDefault,
0,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
CFStringRef displayName = CreateDisplayNameForURL(mInputSource->GetURL());
CFStringRef errorString = CFStringCreateWithFormat(kCFAllocatorDefault,
NULL,
CFCopyLocalizedString(CFSTR("The file “%@” does not appear to be an Ogg file."), ""),
displayName);
CFDictionarySetValue(errorDictionary,
kCFErrorLocalizedDescriptionKey,
errorString);
CFDictionarySetValue(errorDictionary,
kCFErrorLocalizedFailureReasonKey,
CFCopyLocalizedString(CFSTR("Not an Ogg file"), ""));
CFDictionarySetValue(errorDictionary,
kCFErrorLocalizedRecoverySuggestionKey,
CFCopyLocalizedString(CFSTR("The file's extension may not match the file's type."), ""));
CFRelease(errorString), errorString = NULL;
CFRelease(displayName), displayName = NULL;
*error = CFErrorCreate(kCFAllocatorDefault,
AudioDecoderErrorDomain,
AudioDecoderFileFormatNotRecognizedError,
errorDictionary);
CFRelease(errorDictionary), errorDictionary = NULL;
}
ogg_sync_destroy(&mOggSyncState);
return false;
}
// Turn the data we wrote into an ogg page
result = ogg_sync_pageout(&mOggSyncState, &mOggPage);
if(1 != result) {
if(error) {
CFMutableDictionaryRef errorDictionary = CFDictionaryCreateMutable(kCFAllocatorDefault,
0,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
CFStringRef displayName = CreateDisplayNameForURL(mInputSource->GetURL());
CFStringRef errorString = CFStringCreateWithFormat(kCFAllocatorDefault,
NULL,
CFCopyLocalizedString(CFSTR("The file “%@” does not appear to be an Ogg file."), ""),
displayName);
CFDictionarySetValue(errorDictionary,
kCFErrorLocalizedDescriptionKey,
errorString);
CFDictionarySetValue(errorDictionary,
kCFErrorLocalizedFailureReasonKey,
CFCopyLocalizedString(CFSTR("Not an Ogg file"), ""));
CFDictionarySetValue(errorDictionary,
kCFErrorLocalizedRecoverySuggestionKey,
CFCopyLocalizedString(CFSTR("The file's extension may not match the file's type."), ""));
CFRelease(errorString), errorString = NULL;
CFRelease(displayName), displayName = NULL;
*error = CFErrorCreate(kCFAllocatorDefault,
AudioDecoderErrorDomain,
AudioDecoderFileFormatNotRecognizedError,
errorDictionary);
CFRelease(errorDictionary), errorDictionary = NULL;
}
ogg_sync_destroy(&mOggSyncState);
return false;
}
// Initialize the stream and grab the serial number
ogg_stream_init(&mOggStreamState, ogg_page_serialno(&mOggPage));
// Get the first Ogg page
result = ogg_stream_pagein(&mOggStreamState, &mOggPage);
if(0 != result) {
if(error) {
CFMutableDictionaryRef errorDictionary = CFDictionaryCreateMutable(kCFAllocatorDefault,
0,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
CFStringRef displayName = CreateDisplayNameForURL(mInputSource->GetURL());
CFStringRef errorString = CFStringCreateWithFormat(kCFAllocatorDefault,
NULL,
CFCopyLocalizedString(CFSTR("The file “%@” does not appear to be an Ogg file."), ""),
displayName);
CFDictionarySetValue(errorDictionary,
kCFErrorLocalizedDescriptionKey,
errorString);
CFDictionarySetValue(errorDictionary,
kCFErrorLocalizedFailureReasonKey,
CFCopyLocalizedString(CFSTR("Not an Ogg file"), ""));
CFDictionarySetValue(errorDictionary,
kCFErrorLocalizedRecoverySuggestionKey,
CFCopyLocalizedString(CFSTR("The file's extension may not match the file's type."), ""));
CFRelease(errorString), errorString = NULL;
CFRelease(displayName), displayName = NULL;
*error = CFErrorCreate(kCFAllocatorDefault,
AudioDecoderErrorDomain,
AudioDecoderFileFormatNotRecognizedError,
errorDictionary);
CFRelease(errorDictionary), errorDictionary = NULL;
}
ogg_sync_destroy(&mOggSyncState);
return false;
}
// Get the first packet (should be the header) from the page
ogg_packet op;
result = ogg_stream_packetout(&mOggStreamState, &op);
if(1 != result) {
if(error) {
CFMutableDictionaryRef errorDictionary = CFDictionaryCreateMutable(kCFAllocatorDefault,
0,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
CFStringRef displayName = CreateDisplayNameForURL(mInputSource->GetURL());
CFStringRef errorString = CFStringCreateWithFormat(kCFAllocatorDefault,
NULL,
CFCopyLocalizedString(CFSTR("The file “%@” does not appear to be an Ogg file."), ""),
displayName);
CFDictionarySetValue(errorDictionary,
kCFErrorLocalizedDescriptionKey,
errorString);
CFDictionarySetValue(errorDictionary,
kCFErrorLocalizedFailureReasonKey,
CFCopyLocalizedString(CFSTR("Not an Ogg file"), ""));
CFDictionarySetValue(errorDictionary,
kCFErrorLocalizedRecoverySuggestionKey,
CFCopyLocalizedString(CFSTR("The file's extension may not match the file's type."), ""));
CFRelease(errorString), errorString = NULL;
CFRelease(displayName), displayName = NULL;
*error = CFErrorCreate(kCFAllocatorDefault,
AudioDecoderErrorDomain,
AudioDecoderFileFormatNotRecognizedError,
errorDictionary);
CFRelease(errorDictionary), errorDictionary = NULL;
}
ogg_sync_destroy(&mOggSyncState);
return false;
}
if(op.bytes >= 5 && !memcmp(op.packet, "Speex", 5))
mSpeexSerialNumber = mOggStreamState.serialno;
++mOggPacketCount;
// Convert the packet to the Speex header
SpeexHeader *header = speex_packet_to_header((char *)op.packet, static_cast<int>(op.bytes));
if(NULL == header) {
if(error) {
CFMutableDictionaryRef errorDictionary = CFDictionaryCreateMutable(kCFAllocatorDefault,
0,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
CFStringRef displayName = CreateDisplayNameForURL(mInputSource->GetURL());
CFStringRef errorString = CFStringCreateWithFormat(kCFAllocatorDefault,
NULL,
CFCopyLocalizedString(CFSTR("The file “%@” does not appear to be an Ogg Speex file."), ""),
displayName);
CFDictionarySetValue(errorDictionary,
kCFErrorLocalizedDescriptionKey,
errorString);
CFDictionarySetValue(errorDictionary,
kCFErrorLocalizedFailureReasonKey,
CFCopyLocalizedString(CFSTR("Not an Ogg Speex file"), ""));
CFDictionarySetValue(errorDictionary,
kCFErrorLocalizedRecoverySuggestionKey,
CFCopyLocalizedString(CFSTR("The file's extension may not match the file's type."), ""));
CFRelease(errorString), errorString = NULL;
CFRelease(displayName), displayName = NULL;
*error = CFErrorCreate(kCFAllocatorDefault,
AudioDecoderErrorDomain,
AudioDecoderFileFormatNotRecognizedError,
errorDictionary);
CFRelease(errorDictionary), errorDictionary = NULL;
}
ogg_sync_destroy(&mOggSyncState);
return false;
}
else if(SPEEX_NB_MODES <= header->mode) {
if(error) {
CFMutableDictionaryRef errorDictionary = CFDictionaryCreateMutable(kCFAllocatorDefault,
0,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
CFStringRef displayName = CreateDisplayNameForURL(mInputSource->GetURL());
CFStringRef errorString = CFStringCreateWithFormat(kCFAllocatorDefault,
NULL,
CFCopyLocalizedString(CFSTR("The Speex mode in the file “%@” is not supported."), ""),
displayName);
CFDictionarySetValue(errorDictionary,
kCFErrorLocalizedDescriptionKey,
errorString);
CFDictionarySetValue(errorDictionary,
kCFErrorLocalizedFailureReasonKey,
CFCopyLocalizedString(CFSTR("Unsupported Ogg Speex file mode"), ""));
CFDictionarySetValue(errorDictionary,
kCFErrorLocalizedRecoverySuggestionKey,
CFCopyLocalizedString(CFSTR("This file may have been encoded with a newer version of Speex."), ""));
CFRelease(errorString), errorString = NULL;
CFRelease(displayName), displayName = NULL;
*error = CFErrorCreate(kCFAllocatorDefault,
AudioDecoderErrorDomain,
AudioDecoderFileFormatNotSupportedError,
errorDictionary);
CFRelease(errorDictionary), errorDictionary = NULL;
}
speex_header_free(header), header = NULL;
ogg_sync_destroy(&mOggSyncState);
return false;
}
const SpeexMode *mode = speex_lib_get_mode(header->mode);
if(mode->bitstream_version != header->mode_bitstream_version) {
if(error) {
CFMutableDictionaryRef errorDictionary = CFDictionaryCreateMutable(kCFAllocatorDefault,
0,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
CFStringRef displayName = CreateDisplayNameForURL(mInputSource->GetURL());
CFStringRef errorString = CFStringCreateWithFormat(kCFAllocatorDefault,
NULL,
CFCopyLocalizedString(CFSTR("The Speex version in the file “%@” is not supported."), ""),
displayName);
CFDictionarySetValue(errorDictionary,
kCFErrorLocalizedDescriptionKey,
errorString);
CFDictionarySetValue(errorDictionary,
kCFErrorLocalizedFailureReasonKey,
CFCopyLocalizedString(CFSTR("Unsupported Ogg Speex file version"), ""));
CFDictionarySetValue(errorDictionary,
kCFErrorLocalizedRecoverySuggestionKey,
CFCopyLocalizedString(CFSTR("This file was encoded with a different version of Speex."), ""));
CFRelease(errorString), errorString = NULL;
CFRelease(displayName), displayName = NULL;
*error = CFErrorCreate(kCFAllocatorDefault,
AudioDecoderErrorDomain,
AudioDecoderFileFormatNotSupportedError,
errorDictionary);
CFRelease(errorDictionary), errorDictionary = NULL;
}
speex_header_free(header), header = NULL;
ogg_sync_destroy(&mOggSyncState);
return false;
}
// Initialize the decoder
mSpeexDecoder = speex_decoder_init(mode);
if(NULL== mSpeexDecoder) {
if(error) {
CFMutableDictionaryRef errorDictionary = CFDictionaryCreateMutable(kCFAllocatorDefault,
0,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
CFDictionarySetValue(errorDictionary,
kCFErrorLocalizedDescriptionKey,
CFCopyLocalizedString(CFSTR("Unable to initialize the Speex decoder."), ""));
// CFDictionarySetValue(errorDictionary,
// kCFErrorLocalizedFailureReasonKey,
// CFCopyLocalizedString(CFSTR("Unsupported Ogg Speex file version"), ""));
// CFDictionarySetValue(errorDictionary,
// kCFErrorLocalizedRecoverySuggestionKey,
// CFCopyLocalizedString(CFSTR("This file was encoded with a different version of Speex."), ""));
*error = CFErrorCreate(kCFAllocatorDefault,
AudioDecoderErrorDomain,
AudioDecoderInputOutputError,
errorDictionary);
CFRelease(errorDictionary), errorDictionary = NULL;
}
speex_header_free(header), header = NULL;
ogg_sync_destroy(&mOggSyncState);
return false;
}
speex_decoder_ctl(mSpeexDecoder, SPEEX_SET_SAMPLING_RATE, &header->rate);
mSpeexFramesPerOggPacket = (0 == header->frames_per_packet ? 1 : header->frames_per_packet);
mExtraSpeexHeaderCount = header->extra_headers;
// Initialize the speex bit-packing data structure
speex_bits_init(&mSpeexBits);
// Initialize the stereo mode
mSpeexStereoState = speex_stereo_state_init();
if(2 == header->nb_channels) {
SpeexCallback callback;
callback.callback_id = SPEEX_INBAND_STEREO;
callback.func = speex_std_stereo_request_handler;
callback.data = mSpeexStereoState;
speex_decoder_ctl(mSpeexDecoder, SPEEX_SET_HANDLER, &callback);
}
// Canonical Core Audio format
mFormat.mFormatID = kAudioFormatLinearPCM;
mFormat.mFormatFlags = kAudioFormatFlagsNativeFloatPacked | kAudioFormatFlagIsNonInterleaved;
mFormat.mBitsPerChannel = 8 * sizeof(float);
mFormat.mSampleRate = header->rate;
mFormat.mChannelsPerFrame = header->nb_channels;
mFormat.mBytesPerPacket = (mFormat.mBitsPerChannel / 8);
mFormat.mFramesPerPacket = 1;
mFormat.mBytesPerFrame = mFormat.mBytesPerPacket * mFormat.mFramesPerPacket;
mFormat.mReserved = 0;
// Set up the source format
mSourceFormat.mFormatID = 'SPEE';
mSourceFormat.mSampleRate = header->rate;
mSourceFormat.mChannelsPerFrame = header->nb_channels;
switch(header->nb_channels) {
case 1: mChannelLayout = CreateChannelLayoutWithTag(kAudioChannelLayoutTag_Mono); break;
case 2: mChannelLayout = CreateChannelLayoutWithTag(kAudioChannelLayoutTag_Stereo); break;
}
speex_header_free(header), header = NULL;
// Allocate the buffer list
spx_int32_t speexFrameSize = 0;
speex_decoder_ctl(mSpeexDecoder, SPEEX_GET_FRAME_SIZE, &speexFrameSize);
mBufferList = AllocateABL(mFormat, speexFrameSize);
if(NULL == mBufferList) {
if(error)
*error = CFErrorCreate(kCFAllocatorDefault, kCFErrorDomainPOSIX, ENOMEM, NULL);
speex_header_free(header), header = NULL;
speex_stereo_state_destroy(mSpeexStereoState), mSpeexStereoState = NULL;
speex_decoder_destroy(mSpeexDecoder), mSpeexDecoder = NULL;
speex_bits_destroy(&mSpeexBits);
ogg_sync_destroy(&mOggSyncState);
return false;
}
for(UInt32 i = 0; i < mBufferList->mNumberBuffers; ++i)
mBufferList->mBuffers[i].mDataByteSize = 0;
mIsOpen = true;
return true;
}
static GstFlowReturn
gst_speex_dec_parse_header (GstSpeexDec * dec, GstBuffer * buf)
{
SpeexHeader *header;
GstMapInfo map;
GstAudioInfo info;
static const GstAudioChannelPosition chan_pos[2][2] = {
{GST_AUDIO_CHANNEL_POSITION_MONO},
{GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT}
};
/* get the header */
gst_buffer_map (buf, &map, GST_MAP_READ);
header = speex_packet_to_header ((gchar *) map.data, map.size);
gst_buffer_unmap (buf, &map);
if (!header)
goto no_header;
if (dec->header) {
GST_DEBUG_OBJECT (dec, "Replacing speex-header, resetting state");
gst_speex_dec_reset (dec);
}
dec->header = header;
if (dec->header->mode >= SPEEX_NB_MODES || dec->header->mode < 0)
goto mode_too_old;
dec->mode = speex_lib_get_mode (dec->header->mode);
/* initialize the decoder */
dec->state = speex_decoder_init (dec->mode);
if (!dec->state)
goto init_failed;
speex_decoder_ctl (dec->state, SPEEX_SET_ENH, &dec->enh);
speex_decoder_ctl (dec->state, SPEEX_GET_FRAME_SIZE, &dec->frame_size);
if (dec->header->nb_channels != 1) {
dec->stereo = speex_stereo_state_init ();
dec->callback.callback_id = SPEEX_INBAND_STEREO;
dec->callback.func = speex_std_stereo_request_handler;
dec->callback.data = dec->stereo;
speex_decoder_ctl (dec->state, SPEEX_SET_HANDLER, &dec->callback);
}
speex_decoder_ctl (dec->state, SPEEX_SET_SAMPLING_RATE, &dec->header->rate);
dec->frame_duration = gst_util_uint64_scale_int (dec->frame_size,
GST_SECOND, dec->header->rate);
speex_bits_init (&dec->bits);
/* set caps */
gst_audio_info_init (&info);
gst_audio_info_set_format (&info,
GST_AUDIO_FORMAT_S16,
dec->header->rate,
dec->header->nb_channels, chan_pos[dec->header->nb_channels - 1]);
if (!gst_audio_decoder_set_output_format (GST_AUDIO_DECODER (dec), &info))
goto nego_failed;
return GST_FLOW_OK;
/* ERRORS */
no_header:
{
GST_INFO_OBJECT (dec, "couldn't read header");
return GST_FLOW_NO_HEADER;
}
mode_too_old:
{
GST_ELEMENT_ERROR (GST_ELEMENT (dec), STREAM, DECODE,
(NULL),
("Mode number %d does not (yet/any longer) exist in this version",
dec->header->mode));
return GST_FLOW_ERROR;
}
init_failed:
{
GST_ELEMENT_ERROR (GST_ELEMENT (dec), STREAM, DECODE,
(NULL), ("couldn't initialize decoder"));
return GST_FLOW_ERROR;
}
nego_failed:
{
GST_ELEMENT_ERROR (GST_ELEMENT (dec), STREAM, DECODE,
(NULL), ("couldn't negotiate format"));
return GST_FLOW_NOT_NEGOTIATED;
}
}
static GstFlowReturn
gst_speex_dec_parse_header (GstSpeexDec * dec, GstBuffer * buf)
{
GstCaps *caps;
/* get the header */
dec->header = speex_packet_to_header ((char *) GST_BUFFER_DATA (buf),
GST_BUFFER_SIZE (buf));
if (!dec->header)
goto no_header;
if (dec->header->mode >= SPEEX_NB_MODES || dec->header->mode < 0)
goto mode_too_old;
dec->mode = speex_lib_get_mode (dec->header->mode);
/* initialize the decoder */
dec->state = speex_decoder_init (dec->mode);
if (!dec->state)
goto init_failed;
speex_decoder_ctl (dec->state, SPEEX_SET_ENH, &dec->enh);
speex_decoder_ctl (dec->state, SPEEX_GET_FRAME_SIZE, &dec->frame_size);
if (dec->header->nb_channels != 1) {
dec->stereo = speex_stereo_state_init ();
dec->callback.callback_id = SPEEX_INBAND_STEREO;
dec->callback.func = speex_std_stereo_request_handler;
dec->callback.data = dec->stereo;
speex_decoder_ctl (dec->state, SPEEX_SET_HANDLER, &dec->callback);
}
speex_decoder_ctl (dec->state, SPEEX_SET_SAMPLING_RATE, &dec->header->rate);
dec->frame_duration = gst_util_uint64_scale_int (dec->frame_size,
GST_SECOND, dec->header->rate);
speex_bits_init (&dec->bits);
/* set caps */
caps = gst_caps_new_simple ("audio/x-raw-int",
"rate", G_TYPE_INT, dec->header->rate,
"channels", G_TYPE_INT, dec->header->nb_channels,
"signed", G_TYPE_BOOLEAN, TRUE,
"endianness", G_TYPE_INT, G_BYTE_ORDER,
"width", G_TYPE_INT, 16, "depth", G_TYPE_INT, 16, NULL);
if (!gst_pad_set_caps (GST_AUDIO_DECODER_SRC_PAD (dec), caps))
goto nego_failed;
gst_caps_unref (caps);
return GST_FLOW_OK;
/* ERRORS */
no_header:
{
GST_ELEMENT_ERROR (GST_ELEMENT (dec), STREAM, DECODE,
(NULL), ("couldn't read header"));
return GST_FLOW_ERROR;
}
mode_too_old:
{
GST_ELEMENT_ERROR (GST_ELEMENT (dec), STREAM, DECODE,
(NULL),
("Mode number %d does not (yet/any longer) exist in this version",
dec->header->mode));
return GST_FLOW_ERROR;
}
init_failed:
{
GST_ELEMENT_ERROR (GST_ELEMENT (dec), STREAM, DECODE,
(NULL), ("couldn't initialize decoder"));
return GST_FLOW_ERROR;
}
nego_failed:
{
GST_ELEMENT_ERROR (GST_ELEMENT (dec), STREAM, DECODE,
(NULL), ("couldn't negotiate format"));
gst_caps_unref (caps);
return GST_FLOW_NOT_NEGOTIATED;
}
}
bool SFB::Audio::OggSpeexDecoder::_Open(CFErrorRef *error)
{
// Initialize Ogg data struct
ogg_sync_init(&mOggSyncState);
// Get the ogg buffer for writing
char *data = ogg_sync_buffer(&mOggSyncState, READ_SIZE_BYTES);
// Read bitstream from input file
ssize_t bytesRead = (ssize_t)GetInputSource().Read(data, READ_SIZE_BYTES);
if(-1 == bytesRead) {
if(error) {
SFB::CFString description(CFCopyLocalizedString(CFSTR("The file “%@” could not be read."), ""));
SFB::CFString failureReason(CFCopyLocalizedString(CFSTR("Read error"), ""));
SFB::CFString recoverySuggestion(CFCopyLocalizedString(CFSTR("Unable to read from the input file."), ""));
*error = CreateErrorForURL(Decoder::ErrorDomain, Decoder::InputOutputError, description, mInputSource->GetURL(), failureReason, recoverySuggestion);
}
ogg_sync_destroy(&mOggSyncState);
return false;
}
// Tell the sync layer how many bytes were written to its internal buffer
int result = ogg_sync_wrote(&mOggSyncState, bytesRead);
if(-1 == result) {
if(error) {
SFB::CFString description(CFCopyLocalizedString(CFSTR("The file “%@” is not a valid Ogg file."), ""));
SFB::CFString failureReason(CFCopyLocalizedString(CFSTR("Not an Ogg file"), ""));
SFB::CFString recoverySuggestion(CFCopyLocalizedString(CFSTR("The file's extension may not match the file's type."), ""));
*error = CreateErrorForURL(Decoder::ErrorDomain, Decoder::InputOutputError, description, mInputSource->GetURL(), failureReason, recoverySuggestion);
}
ogg_sync_destroy(&mOggSyncState);
return false;
}
// Turn the data we wrote into an ogg page
result = ogg_sync_pageout(&mOggSyncState, &mOggPage);
if(1 != result) {
if(error) {
SFB::CFString description(CFCopyLocalizedString(CFSTR("The file “%@” is not a valid Ogg file."), ""));
SFB::CFString failureReason(CFCopyLocalizedString(CFSTR("Not an Ogg file"), ""));
SFB::CFString recoverySuggestion(CFCopyLocalizedString(CFSTR("The file's extension may not match the file's type."), ""));
*error = CreateErrorForURL(Decoder::ErrorDomain, Decoder::InputOutputError, description, mInputSource->GetURL(), failureReason, recoverySuggestion);
}
ogg_sync_destroy(&mOggSyncState);
return false;
}
// Initialize the stream and grab the serial number
ogg_stream_init(&mOggStreamState, ogg_page_serialno(&mOggPage));
// Get the first Ogg page
result = ogg_stream_pagein(&mOggStreamState, &mOggPage);
if(0 != result) {
if(error) {
SFB::CFString description(CFCopyLocalizedString(CFSTR("The file “%@” is not a valid Ogg file."), ""));
SFB::CFString failureReason(CFCopyLocalizedString(CFSTR("Not an Ogg file"), ""));
SFB::CFString recoverySuggestion(CFCopyLocalizedString(CFSTR("The file's extension may not match the file's type."), ""));
*error = CreateErrorForURL(Decoder::ErrorDomain, Decoder::InputOutputError, description, mInputSource->GetURL(), failureReason, recoverySuggestion);
}
ogg_sync_destroy(&mOggSyncState);
return false;
}
// Get the first packet (should be the header) from the page
ogg_packet op;
result = ogg_stream_packetout(&mOggStreamState, &op);
if(1 != result) {
if(error) {
SFB::CFString description(CFCopyLocalizedString(CFSTR("The file “%@” is not a valid Ogg file."), ""));
SFB::CFString failureReason(CFCopyLocalizedString(CFSTR("Not an Ogg file"), ""));
SFB::CFString recoverySuggestion(CFCopyLocalizedString(CFSTR("The file's extension may not match the file's type."), ""));
*error = CreateErrorForURL(Decoder::ErrorDomain, Decoder::InputOutputError, description, mInputSource->GetURL(), failureReason, recoverySuggestion);
}
ogg_sync_destroy(&mOggSyncState);
return false;
}
if(op.bytes >= 5 && !memcmp(op.packet, "Speex", 5))
mSpeexSerialNumber = mOggStreamState.serialno;
++mOggPacketCount;
// Convert the packet to the Speex header
SpeexHeader *header = speex_packet_to_header((char *)op.packet, (int)op.bytes);
if(nullptr == header) {
if(error) {
SFB::CFString description(CFCopyLocalizedString(CFSTR("The file “%@” is not a valid Ogg Speex file."), ""));
SFB::CFString failureReason(CFCopyLocalizedString(CFSTR("Not an Ogg Speex file"), ""));
SFB::CFString recoverySuggestion(CFCopyLocalizedString(CFSTR("The file's extension may not match the file's type."), ""));
*error = CreateErrorForURL(Decoder::ErrorDomain, Decoder::FileFormatNotRecognizedError, description, mInputSource->GetURL(), failureReason, recoverySuggestion);
}
ogg_sync_destroy(&mOggSyncState);
return false;
}
else if(SPEEX_NB_MODES <= header->mode) {
if(error) {
SFB::CFString description(CFCopyLocalizedString(CFSTR("The Speex mode in the file “%@” is not supported."), ""));
SFB::CFString failureReason(CFCopyLocalizedString(CFSTR("Unsupported Ogg Speex file mode"), ""));
SFB::CFString recoverySuggestion(CFCopyLocalizedString(CFSTR("This file may have been encoded with a newer version of Speex."), ""));
*error = CreateErrorForURL(Decoder::ErrorDomain, Decoder::FileFormatNotSupportedError, description, mInputSource->GetURL(), failureReason, recoverySuggestion);
}
speex_header_free(header);
header = nullptr;
ogg_sync_destroy(&mOggSyncState);
return false;
}
const SpeexMode *mode = speex_lib_get_mode(header->mode);
if(mode->bitstream_version != header->mode_bitstream_version) {
if(error) {
SFB::CFString description(CFCopyLocalizedString(CFSTR("The Speex version in the file “%@” is not supported."), ""));
SFB::CFString failureReason(CFCopyLocalizedString(CFSTR("Unsupported Ogg Speex file version"), ""));
SFB::CFString recoverySuggestion(CFCopyLocalizedString(CFSTR("This file was encoded with a different version of Speex."), ""));
*error = CreateErrorForURL(Decoder::ErrorDomain, Decoder::FileFormatNotSupportedError, description, mInputSource->GetURL(), failureReason, recoverySuggestion);
}
speex_header_free(header);
header = nullptr;
ogg_sync_destroy(&mOggSyncState);
return false;
}
// Initialize the decoder
mSpeexDecoder = speex_decoder_init(mode);
if(nullptr== mSpeexDecoder) {
if(error) {
SFB::CFString description(CFCopyLocalizedString(CFSTR("Unable to initialize the Speex decoder."), ""));
SFB::CFString failureReason(CFCopyLocalizedString(CFSTR("Error initializing Speex decoder"), ""));
SFB::CFString recoverySuggestion(CFCopyLocalizedString(CFSTR("An unknown error occurred."), ""));
*error = CreateErrorForURL(Decoder::ErrorDomain, Decoder::InputOutputError, description, mInputSource->GetURL(), failureReason, recoverySuggestion);
}
speex_header_free(header);
header = nullptr;
ogg_sync_destroy(&mOggSyncState);
return false;
}
speex_decoder_ctl(mSpeexDecoder, SPEEX_SET_SAMPLING_RATE, &header->rate);
mSpeexFramesPerOggPacket = (0 == header->frames_per_packet ? 1 : header->frames_per_packet);
mExtraSpeexHeaderCount = (UInt32)header->extra_headers;
// Initialize the speex bit-packing data structure
speex_bits_init(&mSpeexBits);
// Initialize the stereo mode
mSpeexStereoState = speex_stereo_state_init();
if(2 == header->nb_channels) {
SpeexCallback callback;
callback.callback_id = SPEEX_INBAND_STEREO;
callback.func = speex_std_stereo_request_handler;
callback.data = mSpeexStereoState;
speex_decoder_ctl(mSpeexDecoder, SPEEX_SET_HANDLER, &callback);
}
// Canonical Core Audio format
mFormat.mFormatID = kAudioFormatLinearPCM;
mFormat.mFormatFlags = kAudioFormatFlagsNativeFloatPacked | kAudioFormatFlagIsNonInterleaved;
mFormat.mBitsPerChannel = 8 * sizeof(float);
mFormat.mSampleRate = header->rate;
mFormat.mChannelsPerFrame = (UInt32)header->nb_channels;
mFormat.mBytesPerPacket = (mFormat.mBitsPerChannel / 8);
mFormat.mFramesPerPacket = 1;
mFormat.mBytesPerFrame = mFormat.mBytesPerPacket * mFormat.mFramesPerPacket;
mFormat.mReserved = 0;
// Set up the source format
mSourceFormat.mFormatID = 'SPEE';
mSourceFormat.mSampleRate = header->rate;
mSourceFormat.mChannelsPerFrame = (UInt32)header->nb_channels;
switch(header->nb_channels) {
case 1: mChannelLayout = ChannelLayout::ChannelLayoutWithTag(kAudioChannelLayoutTag_Mono); break;
case 2: mChannelLayout = ChannelLayout::ChannelLayoutWithTag(kAudioChannelLayoutTag_Stereo); break;
}
speex_header_free(header);
header = nullptr;
// Allocate the buffer list
spx_int32_t speexFrameSize = 0;
speex_decoder_ctl(mSpeexDecoder, SPEEX_GET_FRAME_SIZE, &speexFrameSize);
if(!mBufferList.Allocate(mFormat, (UInt32)speexFrameSize)) {
if(error)
*error = CFErrorCreate(kCFAllocatorDefault, kCFErrorDomainPOSIX, ENOMEM, nullptr);
speex_stereo_state_destroy(mSpeexStereoState);
mSpeexStereoState = nullptr;
speex_decoder_destroy(mSpeexDecoder);
mSpeexDecoder = nullptr;
speex_bits_destroy(&mSpeexBits);
ogg_sync_destroy(&mOggSyncState);
return false;
}
for(UInt32 i = 0; i < mBufferList->mNumberBuffers; ++i)
mBufferList->mBuffers[i].mDataByteSize = 0;
return true;
}