int __declspec(dllexport) DLL_FillBuffer(long vgm, char* szBuffer, int iSize)
{
VGMSTREAM* song = (VGMSTREAM*)vgm;
render_vgmstream((sample*)szBuffer,iSize/(2*song->channels),(VGMSTREAM*)vgm);
return iSize;
}
int64_t Seek(void* context, int64_t time)
{
if (!context)
return 0;
VGMContext* ctx = (VGMContext*)context;
int16_t* buffer = new int16_t[576*ctx->stream->channels];
if (!buffer)
return 0;
long samples_to_do = (long)time * ctx->stream->sample_rate / 1000L;
if (samples_to_do < ctx->stream->current_sample )
reset_vgmstream(ctx->stream);
else
samples_to_do -= ctx->stream->current_sample;
while (samples_to_do > 0)
{
long l = samples_to_do>576?576:samples_to_do;
render_vgmstream(buffer, l, ctx->stream);
samples_to_do -= l;
}
delete[] buffer;
return time;
}
void render_vgmstream_scd_int(sample * buffer, int32_t sample_count, VGMSTREAM * vgmstream) {
sample interleave_buf[INTERLEAVE_BUF_SIZE];
int32_t samples_done = 0;
scd_int_codec_data *data = vgmstream->codec_data;
while (samples_done < sample_count)
{
int32_t samples_to_do = INTERLEAVE_BUF_SIZE;
int c;
if (samples_to_do > sample_count - samples_done)
samples_to_do = sample_count - samples_done;
for (c=0; c < data->substream_count; c++)
{
int32_t i;
render_vgmstream(interleave_buf,
samples_to_do, data->substreams[c]);
for (i=0; i < samples_to_do; i++)
{
buffer[(samples_done+i)*data->substream_count + c] = interleave_buf[i];
}
}
samples_done += samples_to_do;
}
}
/* Decodes samples for segmented streams.
* Chains together sequential vgmstreams, for data divided into separate sections or files
* (like one part for intro and other for loop segments, which may even use different codecs). */
void render_vgmstream_segmented(sample * buffer, int32_t sample_count, VGMSTREAM * vgmstream) {
int samples_written = 0;
segmented_layout_data *data = vgmstream->layout_data;
while (samples_written < sample_count) {
int samples_to_do;
int samples_this_block = data->segments[data->current_segment]->num_samples;
if (vgmstream->loop_flag && vgmstream_do_loop(vgmstream)) {
/* handle looping, finding loop segment */
int loop_segment = 0, samples = 0, loop_samples_skip = 0;
while (samples < vgmstream->num_samples) {
int32_t segment_samples = data->segments[loop_segment]->num_samples;
if (vgmstream->loop_start_sample >= samples && vgmstream->loop_start_sample < samples + segment_samples) {
loop_samples_skip = vgmstream->loop_start_sample - samples;
break; /* loop_start falls within loop_segment's samples */
}
samples += segment_samples;
loop_segment++;
}
if (loop_segment == data->segment_count) {
VGM_LOG("segmented_layout: can't find loop segment\n");
loop_segment = 0;
}
if (loop_samples_skip > 0) {
VGM_LOG("segmented_layout: loop starts after %i samples\n", loop_samples_skip);
//todo skip/fix, but probably won't happen
}
data->current_segment = loop_segment;
reset_vgmstream(data->segments[data->current_segment]);
vgmstream->samples_into_block = 0;
continue;
}
samples_to_do = vgmstream_samples_to_do(samples_this_block, sample_count, vgmstream);
if (samples_to_do > sample_count - samples_written)
samples_to_do = sample_count - samples_written;
/* detect segment change and restart */
if (samples_to_do == 0) {
data->current_segment++;
reset_vgmstream(data->segments[data->current_segment]);
vgmstream->samples_into_block = 0;
continue;
}
render_vgmstream(&buffer[samples_written*data->segments[data->current_segment]->channels],
samples_to_do,data->segments[data->current_segment]);
samples_written += samples_to_do;
vgmstream->current_sample += samples_to_do;
vgmstream->samples_into_block += samples_to_do;
}
}
int ReadPCM(void* context, uint8_t* pBuffer, int size, int *actualsize)
{
if (!context || !actualsize)
return 1;
VGMContext* ctx = (VGMContext*)context;
render_vgmstream((sample*)pBuffer, size/(2*ctx->stream->channels), ctx->stream);
*actualsize = size;
ctx->pos += size;
return 0;
}
unsigned long __declspec(dllexport) DLL_Seek(long vgm, unsigned long timepos)
{
VGMSTREAM* song = (VGMSTREAM*)vgm;
int16_t* buffer = new int16_t[576*song->channels];
long samples_to_do = (long)timepos * song->sample_rate / 1000L;
if (samples_to_do < song->current_sample )
reset_vgmstream(song);
else
samples_to_do -= song->current_sample;
while (samples_to_do > 0)
{
long l = samples_to_do>576?576:samples_to_do;
render_vgmstream(buffer,l,song);
samples_to_do -= l;
}
delete[] buffer;
return timepos;
}
int __stdcall XMP_Buffer(float* buffer, UINT32 bufsize) {
int i,x,y;
int adder = vgmstream->channels * (Decoder_Is_Using_Lame_Hack ? 2 : 1);
/*
** Algorithm for correct playback.
** This is in fact a huge-ass hack which is terrible and crashes tracks with sample rates
** it doesn't like. We'll need to fix this later
*/
for (i=0;i<bufsize;i+=adder) {
INT16 buf[16];
memset(buf,0,16 * 2);
render_vgmstream(buf,vgmstream->channels,vgmstream);
for (x=0;x<adder;x++) {
for (y=0;y<(Decoder_Is_Using_Lame_Hack ? 2 : 1);y++)
*(buffer + i + x + y) = (float)(buf[x]) / 22050; // This divide is required, audio is REALLY LOUD otherwise
}
}
return bufsize;
}
void decodeThread(void* arg)
{
debug("decode_buffer start\n");
stream_filename* strm_file = static_cast<stream_filename*>(arg);
VGMSTREAM* vgmstream = strm_file->stream;
std::string& filename = strm_file->filename;
if (!vgmstream)
return;
const int channels = vgmstream->channels;
const u32 stream_samples_amount = get_vgmstream_play_samples(1, 0, 0, vgmstream);
u32 current_sample_pos = 0;
stream_buffer* buffer = &playBuffer1;
while (runThreads)
{
debug("decode_buffer wait produce\n");
// Wait for signal to make another stream
svcWaitSynchronization(bufferReadyProduceRequest, U64_MAX);
svcClearEvent(bufferReadyProduceRequest);
u32 toget = max_samples;
if (!vgmstream->loop_flag)
{
if (current_sample_pos >= stream_samples_amount)
break;
if (current_sample_pos + toget > stream_samples_amount)
toget = stream_samples_amount - current_sample_pos;
}
debug("decode_buffer decode %d\n", toget);
// TODO modify render_vgmstream to return not decode channel data sequentially in the buffer passed in.
render_vgmstream(rawSampleBuffer, toget, vgmstream);
debug("decode_buffer detangle\n");
// Detangle audio data...
buffer->samples = toget;
for (u32 i = 0; i < max_samples; i++)
{
for (int j = 0; j < channels; j++)
{
buffer->channels[j][i] = rawSampleBuffer[i * channels + j];
}
}
debug("decode_buffer signal consume\n");
// Ready to play
svcSignalEvent(bufferReadyConsumeRequest);
clearTopScreen();
print("\x1b[1;0HCurrently playing %s\nPress B to choose another song\nPress Start to exit", filename.c_str());
print("\x1b[29;0HPLAYING %.4lf %.4lf\n", (float)current_sample_pos / vgmstream->sample_rate, (float)stream_samples_amount / vgmstream->sample_rate);
current_sample_pos += toget;
// Flip buffers
if (buffer == &playBuffer1)
buffer = &playBuffer2;
else
buffer = &playBuffer1;
debug("decode_buffer decode more\n");
}
debug("decode_buffer done\n");
}
static int play_vgmstream(const char *filename, struct params *par) {
int ret = 0;
STREAMFILE *sf;
VGMSTREAM *vgms;
FILE *save_fps[4];
int loop_count;
int64_t total_samples;
size_t buffer_size;
int64_t buffer_samples;
int64_t fade_time_samples, fade_start;
int time_total_min;
double time_total_sec;
int64_t s;
int i;
sf = open_stdio_streamfile(filename);
if (!sf) {
fprintf(stderr, "%s: cannot open file\n", filename);
return -1;
}
sf->stream_index = par->stream_index;
vgms = init_vgmstream_from_STREAMFILE(sf);
close_streamfile(sf);
if (!vgms) {
fprintf(stderr, "%s: error opening stream\n", filename);
return -1;
}
printf("Playing stream: %s\n", filename);
/* Print metadata in verbose mode
*/
if (verbose) {
char description[4096] = { '\0' };
describe_vgmstream(vgms, description, sizeof(description));
puts(description);
putchar('\n');
}
/* If the audio device hasn't been opened yet, then describe it
*/
if (!device) {
ao_info *info = ao_driver_info(driver_id);
printf("Audio device: %s\n", info->name);
printf("Comment: %s\n", info->comment);
putchar('\n');
}
/* Stupid hack to hang onto a few low-numbered file descriptors
* so that play_compressed_file() doesn't break, due to POSIX
* wackiness like https://bugs.debian.org/590920
*/
for (i = 0; i < 4; i++)
save_fps[i] = fopen("/dev/null", "r");
ret = set_sample_format(vgms);
if (ret) goto fail;
loop_count = par->loop_count;
if (vgms->loop_flag && loop_count < 0) {
/*
* Calculate how many loops are needed to achieve a minimum
* playback time. Note: This calculation is derived from the
* logic in get_vgmstream_play_samples().
*/
double intro = (double)vgms->loop_start_sample / vgms->sample_rate;
double loop = (double)(vgms->loop_end_sample - vgms->loop_start_sample) / vgms->sample_rate;
double end = par->fade_time + par->fade_delay;
if (loop < 1.0) loop = 1.0;
loop_count = (int)((par->min_time - intro - end) / loop + 0.99);
if (loop_count < 1) loop_count = 1;
}
total_samples = get_vgmstream_play_samples(loop_count, par->fade_time, par->fade_delay, vgms);
{
double total = (double)total_samples / vgms->sample_rate;
time_total_min = (int)total / 60;
time_total_sec = total - 60 * time_total_min;
}
/* Buffer size in bytes
*/
buffer_size = 1024 * buffer_size_kb;
if (!buffer) {
if (buffer_size_kb < 1) {
fprintf(stderr, "Invalid buffer size '%d'\n", buffer_size_kb);
return -1;
}
buffer = malloc(buffer_size);
if (!buffer) goto fail;
}
buffer_samples = buffer_size / (vgms->channels * sizeof(sample));
fade_time_samples = (int64_t)(par->fade_time * vgms->sample_rate);
fade_start = total_samples - fade_time_samples;
if (fade_start < 0)
fade_start = total_samples;
for (s = 0; s < total_samples && !interrupted; s += buffer_samples) {
int64_t buffer_used_samples = MIN(buffer_samples, total_samples - s);
char *suffix = "";
render_vgmstream(buffer, buffer_used_samples, vgms);
#ifdef LITTLE_ENDIAN_OUTPUT
swap_samples_le(buffer, vgms->channels * buffer_used_samples);
#endif
if (vgms->loop_flag && fade_time_samples > 0 && s >= fade_start) {
/* Got to do the fade-out ourselves :p */
int64_t b;
for (b = 0; b < buffer_used_samples; b++) {
double factor = 1.0 - (double)(s + b - fade_start) / fade_time_samples;
int c;
for (c = 0; c < vgms->channels; c++)
buffer[vgms->channels * b + c] *= factor;
}
suffix = " (fading)";
}
if (verbose && !out_filename) {
double played = (double)s / vgms->sample_rate;
double remain = (double)(total_samples - s) / vgms->sample_rate;
int time_played_min = (int)played / 60;
double time_played_sec = played - 60 * time_played_min;
int time_remain_min = (int)remain / 60;
double time_remain_sec = remain - 60 * time_remain_min;
/* Time: 01:02.34 [08:57.66] of 10:00.00 */
printf("\rTime: %02d:%05.2f [%02d:%05.2f] of %02d:%05.2f%s ",
time_played_min, time_played_sec,
time_remain_min, time_remain_sec,
time_total_min, time_total_sec,
suffix);
fflush(stdout);
}
if (!ao_play(device, (char *)buffer, buffer_used_samples * vgms->channels * sizeof(sample))) {
fputs("\nAudio playback error\n", stderr);
ao_close(device);
device = NULL;
ret = -1;
break;
}
}
if (verbose && !ret) {
/* Clear time status line */
putchar('\r');
for (i = 0; i < 64; i++)
putchar(' ');
putchar('\r');
fflush(stdout);
}
if (out_filename && !ret)
printf("Wrote %02d:%05.2f of audio to %s\n\n",
time_total_min, time_total_sec, out_filename);
if (interrupted) {
fputs("Playback terminated.\n\n", stdout);
ret = record_interrupt();
if (ret) fputs("Exiting...\n", stdout);
}
fail:
close_vgmstream(vgms);
for (i = 0; i < 4; i++)
fclose(save_fps[i]);
return ret;
}