/*
* main:
* -----
*/
int main(int argc, char **argv)
{
int raw = 0;
int n, p, total;
int mono_from_stereo = 0;
time_t start, end;
static unsigned int buff[samp_per_frame];
fprintf(stderr, "Shine v1.08 19/06/03\n");
time(&start);
shine_init(&config);
if (!parse_command(argc, argv, &raw, &mono_from_stereo))
print_usage();
shine_update(&config);
open_bit_stream(&config, "a.mp3");
fprintf(stderr, "Shine %p\n", config.scalefac_band_long);
n = config.samples_per_frame >> (2 - config.channels);
for ( ; ; ) {
p = read(0, buff, sizeof(unsigned int) * n);
if (p <= 0)
break;
p = p / sizeof(unsigned int);
while (p < n)
buff[p++] = 0;
total = shine_frame(&config, buff, n * sizeof(unsigned int), ignore, sizeof(ignore));
write(1, ignore, total);
}
close_bit_stream(&config);
shine_fini(&config);
time(&end);
fprintf(stderr, "use %ld\n", end - start);
return 0;
}
/*
* L3_compress:
* ------------
*/
void L3_compress(void)
{
int frames_processed;
int ch;
int i;
int gr;
static short buffer[2][1152];
short *buffer_window[2];
int remainder;
int bytes_per_frame;
int lag;
int mean_bits;
int sideinfo_len;
static int l3_enc[2][2][samp_per_frame2];
static int l3_sb_sample[2][3][18][SBLIMIT];
static int mdct_freq[2][2][samp_per_frame2];
static L3_side_info_t side_info;
if(config.mpeg.type == MPEG1)
{
config.mpeg.granules = 2;
config.mpeg.samples_per_frame = samp_per_frame;
config.mpeg.resv_limit = ((1<<9)-1)<<3;
sideinfo_len = (config.mpeg.channels == 1) ? 168 : 288;
}
else /* mpeg 2/2.5 */
{
config.mpeg.granules = 1;
config.mpeg.samples_per_frame = samp_per_frame2;
config.mpeg.resv_limit = ((1<<8)-1)<<3;
sideinfo_len = (config.mpeg.channels == 1) ? 104 : 168;
}
scalefac_band_long = sfBandIndex[config.mpeg.type][config.mpeg.samplerate_index];
#ifdef NO_RESERVOIR
config.mpeg.resv_limit = 0;
#endif
{ /* find number of whole bytes per frame and the remainder */
int x = config.mpeg.samples_per_frame * config.mpeg.bitr * (1000/8);
bytes_per_frame = x / config.wave.samplerate;
remainder = x % config.wave.samplerate;
}
config.mpeg.total_frames = /* round up */
(config.wave.total_samples + config.mpeg.samples_per_frame - 1) /
config.mpeg.samples_per_frame;
printf("%d frames\n",config.mpeg.total_frames);
frames_processed = lag = 0;
open_bit_stream(config.outfile);
while(wave_get(buffer))
{
frames_processed++;
if(((frames_processed & 7)==0) || (frames_processed >= config.mpeg.total_frames))
printf("\015[%d] %d%%", frames_processed,(frames_processed*100)/config.mpeg.total_frames);
buffer_window[0] = buffer[0];
buffer_window[1] = buffer[1];
/* sort out padding */
config.mpeg.padding = (lag += remainder) >= config.wave.samplerate;
if (config.mpeg.padding)
lag -= config.wave.samplerate;
config.mpeg.bits_per_frame = 8*(bytes_per_frame + config.mpeg.padding);
/* bits per channel per granule */
mean_bits = (config.mpeg.bits_per_frame - sideinfo_len) >>
(config.mpeg.granules + config.mpeg.channels - 2);
/* polyphase filtering */
for(gr=0; gr<config.mpeg.granules; gr++)
for(ch=0; ch<config.mpeg.channels; ch++)
for(i=0;i<18;i++)
L3_window_filter_subband(&buffer_window[ch], &l3_sb_sample[ch][gr+1][i][0] ,ch);
/* apply mdct to the polyphase output */
L3_mdct_sub(l3_sb_sample, mdct_freq);
/* bit and noise allocation */
L3_iteration_loop(mdct_freq, &side_info, l3_enc, mean_bits);
/* write the frame to the bitstream */
L3_format_bitstream(l3_enc, &side_info);
}
close_bit_stream();
}
