SInt64 SFB::Audio::MusepackDecoder::_SeekToFrame(SInt64 frame)
{
mpc_status result = mpc_demux_seek_sample(mDemux, (mpc_uint64_t)frame);
if(MPC_STATUS_OK == result)
mCurrentFrame = frame;
return ((MPC_STATUS_OK == result) ? mCurrentFrame : -1);
}
bool CDAFReader_MPC::Seek_(uint64 frame_offset)
{
MPCBufferOffs = 0;
MPCBufferIn = 0;
if(mpc_demux_seek_sample(demux, frame_offset) < 0)
return(false);
return(true);
}
static gint64
xmms_mpc_seek (xmms_xform_t *xform, gint64 offset,
xmms_xform_seek_mode_t whence, xmms_error_t *err)
{
xmms_mpc_data_t *data;
data = xmms_xform_private_data_get (xform);
g_return_val_if_fail (whence == XMMS_XFORM_SEEK_SET, -1);
#ifdef HAVE_MPCDEC_OLD
mpc_decoder_seek_sample (&data->decoder, offset);
#else
mpc_demux_seek_sample (data->demux, offset);
#endif
g_string_erase (data->buffer, 0, data->buffer->len);
return offset;
}
static gboolean
gst_musepackdec_handle_seek_event (GstMusepackDec * dec, GstEvent * event)
{
GstSeekType start_type, stop_type;
GstSeekFlags flags;
GstSegment segment;
GstFormat format;
gboolean flush;
gdouble rate;
gint64 start, stop;
gint samplerate;
gst_event_parse_seek (event, &rate, &format, &flags, &start_type, &start,
&stop_type, &stop);
if (format != GST_FORMAT_TIME && format != GST_FORMAT_DEFAULT) {
GST_DEBUG_OBJECT (dec, "seek failed: only TIME or DEFAULT format allowed");
return FALSE;
}
samplerate = g_atomic_int_get (&dec->rate);
if (format == GST_FORMAT_TIME) {
if (start_type != GST_SEEK_TYPE_NONE)
start = gst_util_uint64_scale_int (start, samplerate, GST_SECOND);
if (stop_type != GST_SEEK_TYPE_NONE)
stop = gst_util_uint64_scale_int (stop, samplerate, GST_SECOND);
}
flush = ((flags & GST_SEEK_FLAG_FLUSH) == GST_SEEK_FLAG_FLUSH);
if (flush)
gst_pad_push_event (dec->srcpad, gst_event_new_flush_start ());
else
gst_pad_pause_task (dec->sinkpad); /* not _stop_task()? */
GST_PAD_STREAM_LOCK (dec->sinkpad);
/* operate on segment copy until we know the seek worked */
segment = dec->segment;
gst_segment_do_seek (&segment, rate, GST_FORMAT_DEFAULT,
flags, start_type, start, stop_type, stop, NULL);
gst_pad_push_event (dec->sinkpad, gst_event_new_flush_stop (TRUE));
GST_DEBUG_OBJECT (dec, "segment: [%" G_GINT64_FORMAT "-%" G_GINT64_FORMAT
"] = [%" GST_TIME_FORMAT "-%" GST_TIME_FORMAT "]",
segment.start, segment.stop,
GST_TIME_ARGS (segment.start * GST_SECOND / dec->rate),
GST_TIME_ARGS (segment.stop * GST_SECOND / dec->rate));
GST_DEBUG_OBJECT (dec, "performing seek to sample %" G_GINT64_FORMAT,
segment.start);
if (segment.start >= segment.duration) {
GST_WARNING_OBJECT (dec, "seek out of bounds");
goto failed;
}
if (mpc_demux_seek_sample (dec->d, segment.start) != MPC_STATUS_OK)
goto failed;
if ((flags & GST_SEEK_FLAG_SEGMENT) == GST_SEEK_FLAG_SEGMENT) {
GST_DEBUG_OBJECT (dec, "posting SEGMENT_START message");
gst_element_post_message (GST_ELEMENT (dec),
gst_message_new_segment_start (GST_OBJECT (dec), GST_FORMAT_TIME,
gst_util_uint64_scale_int (segment.start, GST_SECOND, dec->rate)));
}
if (flush) {
gst_pad_push_event (dec->srcpad, gst_event_new_flush_stop (TRUE));
}
segment.position = segment.start;
dec->segment = segment;
gst_musepackdec_send_newsegment (dec);
GST_DEBUG_OBJECT (dec, "seek successful");
gst_pad_start_task (dec->sinkpad,
(GstTaskFunction) gst_musepackdec_loop, dec->sinkpad, NULL);
GST_PAD_STREAM_UNLOCK (dec->sinkpad);
return TRUE;
failed:
{
GST_WARNING_OBJECT (dec, "seek failed");
GST_PAD_STREAM_UNLOCK (dec->sinkpad);
return FALSE;
}
}
/* This is the codec entry point. */
enum codec_status codec_main(void)
{
mpc_int64_t samplesdone;
uint32_t frequency; /* 0.1 kHz accuracy */
uint32_t elapsed_time; /* milliseconds */
uint32_t byterate; /* bytes per second */
mpc_status status;
mpc_reader reader;
mpc_streaminfo info;
mpc_frame_info frame;
mpc_demux *demux = NULL;
int retval = CODEC_OK;
frame.buffer = sample_buffer;
/* musepack's sample representation is 18.14
* DSP_SET_SAMPLE_DEPTH = 14 (FRACT) + 16 (NATIVE) - 1 (SIGN) = 29 */
ci->configure(DSP_SET_SAMPLE_DEPTH, 29);
/* Create a decoder instance */
reader.read = read_impl;
reader.seek = seek_impl;
reader.tell = tell_impl;
reader.get_size = get_size_impl;
next_track:
if (codec_init())
{
retval = CODEC_ERROR;
goto exit;
}
while (!*ci->taginfo_ready && !ci->stop_codec)
ci->sleep(1);
/* Initialize demux/decoder. */
demux = mpc_demux_init(&reader);
if (NULL == demux)
{
retval = CODEC_ERROR;
goto done;
}
/* Read file's streaminfo data. */
mpc_demux_get_info(demux, &info);
byterate = (mpc_uint32_t)(info.average_bitrate) / 8;
frequency = info.sample_freq / 100; /* 0.1 kHz accuracy */
ci->configure(DSP_SWITCH_FREQUENCY, info.sample_freq);
/* Remark: rockbox offset is the file offset in bytes. So, estimate the
* sample seek position from the file offset, the sampling frequency and
* the bitrate. As the saved position is exactly calculated the reverse way
* there is no loss of information except rounding. */
samplesdone = 100 * ((mpc_uint64_t)(ci->id3->offset * frequency) / byterate);
/* Set up digital signal processing for correct number of channels */
/* NOTE: current musepack format only allows for stereo files
but code is here to handle other configurations anyway */
if (info.channels == 2)
ci->configure(DSP_SET_STEREO_MODE, STEREO_NONINTERLEAVED);
else if (info.channels == 1)
ci->configure(DSP_SET_STEREO_MODE, STEREO_MONO);
else
{
retval = CODEC_ERROR;
goto done;
}
codec_set_replaygain(ci->id3);
/* Resume to saved sample offset. */
if (samplesdone > 0)
{
if (mpc_demux_seek_sample(demux, samplesdone) == MPC_STATUS_OK)
{
elapsed_time = (samplesdone*10)/frequency;
ci->set_elapsed(elapsed_time);
}
else
{
samplesdone = 0;
}
}
/* This is the decoding loop. */
do
{
/* Complete seek handler. */
if (ci->seek_time)
{
mpc_int64_t new_offset = ((ci->seek_time - 1)/10)*frequency;
if (mpc_demux_seek_sample(demux, new_offset) == MPC_STATUS_OK)
{
samplesdone = new_offset;
ci->set_elapsed(ci->seek_time);
}
ci->seek_complete();
}
/* Stop or skip occured, exit decoding loop. */
if (ci->stop_codec || ci->new_track)
break;
/* Decode one frame. */
status = mpc_demux_decode(demux, &frame);
ci->yield();
if (frame.bits == -1)
{
/* Decoding error, exit decoding loop. */
retval = (status == MPC_STATUS_OK) ? CODEC_OK : CODEC_ERROR;
goto done;
}
else
{
/* Decoding passed, insert samples to PCM buffer. */
ci->pcmbuf_insert(frame.buffer,
frame.buffer + MPC_FRAME_LENGTH,
frame.samples);
samplesdone += frame.samples;
elapsed_time = (samplesdone*10)/frequency;
ci->set_elapsed(elapsed_time);
/* Remark: rockbox offset is the file offset in bytes. So estimate
* this offset from the samples, sampling frequency and bitrate */
ci->set_offset( (samplesdone * byterate)/(frequency*100) );
}
} while (true);
done:
if (ci->request_next_track())
goto next_track;
exit:
return retval;
}
int main(int argc, char **argv)
{
MPC_SAMPLE_FORMAT album_max = 0;
mpc_uint16_t album_gain;
mpc_uint16_t album_peak;
mpc_uint16_t * title_gain;
mpc_uint16_t * title_peak;
mpc_uint32_t * header_pos;
int j;
printf(About);
if (argc < 2) {
usage(argv[0]);
return 0;
}
title_gain = malloc((sizeof(mpc_uint16_t) * 2 + sizeof(mpc_uint32_t)) * (argc - 1));
title_peak = title_gain + (argc - 1);
header_pos = (mpc_uint32_t *) (title_peak + (argc - 1));
for (j = 1; j < argc; j++) {
MPC_SAMPLE_FORMAT sample_buffer[MPC_DECODER_BUFFER_LENGTH];
MPC_SAMPLE_FORMAT title_max = 0, chap_max;
mpc_uint16_t * chap_gain, * chap_peak;
mpc_reader reader;
mpc_demux* demux;
mpc_streaminfo si;
mpc_status err;
int chap_nb, chap = 0;
mpc_uint64_t cur_sample = 1, next_chap_sample = mpc_int64_max;
err = mpc_reader_init_stdio(&reader, argv[j]);
if (err < 0) return !MPC_STATUS_OK;
demux = mpc_demux_init(&reader);
if (!demux) return !MPC_STATUS_OK;
mpc_demux_get_info(demux, &si);
chap_nb = mpc_demux_chap_nb(demux);
mpc_demux_seek_sample(demux, 0);
if (chap_nb > 0) {
mpc_chap_info * chap_info = mpc_demux_chap(demux, chap);
next_chap_sample = chap_info->sample;
chap_gain = malloc(sizeof(mpc_uint16_t) * 2 * chap_nb);
chap_peak = chap_gain + chap_nb;
}
if (j == 1) gain_init_analysis ( si.sample_freq );
while (1) {
mpc_frame_info frame;
int i = 0;
frame.buffer = sample_buffer;
mpc_demux_decode(demux, &frame);
if (frame.bits == -1) break;
while (next_chap_sample < cur_sample + frame.samples) {
int sample_nb = (int)(next_chap_sample - cur_sample);
chap_max = _max(chap_max, analyze_get_max(sample_buffer + 2 * i, sample_nb));
if (chap == 0) // first samples are not in a chapter
gain_get_chapter();
else {
chap_gain[chap - 1] = (mpc_uint16_t) (gain_get_chapter() * 256);
chap_peak[chap - 1] = (mpc_uint16_t) (log10(chap_max * (1 << 15)) * 20 * 256);
}
chap++;
title_max = _max(title_max, chap_max);
chap_max = 0;
i += sample_nb;
cur_sample = next_chap_sample;
if (chap < chap_nb) {
mpc_chap_info * chap_info = mpc_demux_chap(demux, chap);
next_chap_sample = chap_info->sample;
} else
next_chap_sample = mpc_int64_max;
}
chap_max = _max(chap_max, analyze_get_max(sample_buffer + 2 * i, frame.samples - i));
cur_sample += frame.samples - i;
}
if (chap_nb > 0) {
chap_gain[chap - 1] = (mpc_uint16_t) (gain_get_chapter() * 256);
chap_peak[chap - 1] = (mpc_uint16_t) (log10(chap_max * (1 << 15)) * 20 * 256);
write_chaps_gain(demux, argv[j], chap_gain, chap_peak);
}
title_max = _max(title_max, chap_max);
album_max = _max(album_max, title_max);
title_gain[j-1] = (mpc_uint16_t) (gain_get_title() * 256);
title_peak[j-1] = (mpc_uint16_t) (log10(title_max * (1 << 15)) * 20 * 256);
header_pos[j-1] = si.header_position + 4;
mpc_demux_exit(demux);
mpc_reader_exit_stdio(&reader);
if (chap_nb > 0)
free(chap_gain);
}
album_gain = (mpc_uint16_t) (gain_get_album() * 256);
album_peak = (mpc_uint16_t) (log10(album_max * (1 << 15)) * 20 * 256);
for (j = 0; j < argc - 1; j++) {
unsigned char buffer[64];
mpc_bits_reader r;
mpc_block b;
mpc_uint64_t size;
FILE * file;
file = fopen( argv[j + 1], "r+b");
if (file == 0) {
fprintf(stderr, "Can't open file \"%s\" for writing\n", argv[j + 1]);
continue;
}
fseek(file, header_pos[j] - 4, SEEK_SET);
fread(buffer, 1, 16, file);
if (memcmp(buffer, "MPCK", 4) != 0) {
fprintf(stderr, "Unsupported file format, not a sv8 file : %s\n", argv[j + 1]);
fclose(file);
continue;
}
r.buff = buffer + 4;
r.count = 8;
for(;;) {
size = mpc_bits_get_block(&r, &b);
if (mpc_check_key(b.key) != MPC_STATUS_OK) break;
if (memcmp(b.key, "RG", 2) == 0) break;
header_pos[j] += b.size + size;
fseek(file, header_pos[j], SEEK_SET);
fread(buffer, 1, 16, file);
r.buff = buffer;
r.count = 8;
}
if (memcmp(b.key, "RG", 2) != 0 || b.size < 9) { //check for the loop above having aborted without finding the packet we want to update
fprintf(stderr, "Unsupported file format or corrupted file : %s\n", argv[j + 1]);
fclose(file);
continue;
}
header_pos[j] += size;
buffer[size] = 1; // replaygain version
buffer[size + 1] = title_gain[j] >> 8;
buffer[size + 2] = title_gain[j] & 0xFF;
buffer[size + 3] = title_peak[j] >> 8;
buffer[size + 4] = title_peak[j] & 0xFF;
buffer[size + 5] = album_gain >> 8;
buffer[size + 6] = album_gain & 0xFF;
buffer[size + 7] = album_peak >> 8;
buffer[size + 8] = album_peak & 0xFF;
fseek(file, header_pos[j], SEEK_SET);
fwrite(buffer + size, 1, b.size, file);
fclose(file);
}
free(title_gain);
return 0;
}
