/**
* Sets audio format to that of 'f'.
*/
void ECA_AUDIO_FORMAT::set_audio_format(const ECA_AUDIO_FORMAT& f)
{
set_channels(f.channels());
set_sample_format(f.sample_format());
set_samples_per_second(f.samples_per_second());
toggle_interleaved_channels(f.interleaved_channels());
}
ECA_AUDIO_FORMAT::ECA_AUDIO_FORMAT(void)
{
set_channels(0);
set_samples_per_second(-1);
set_sample_format(sfmt_none);
toggle_interleaved_channels(true);
}
ECA_AUDIO_FORMAT::ECA_AUDIO_FORMAT(int channels,
long int srate,
ECA_AUDIO_FORMAT::Sample_format format,
bool ileaved)
{
set_channels(channels);
set_samples_per_second(srate);
set_sample_format(format);
toggle_interleaved_channels(ileaved);
}
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;
}
void ECA_AUDIO_FORMAT::set_sample_format_string(const std::string& f_str) throw(ECA_ERROR&)
{
/* note, may raise an exception */
set_sample_format(string_to_sample_format(f_str));
}
