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#include "libmpeg3.h"
#include "mpeg3protos.h"
#include <stdlib.h>
#include <string.h>
#define BUFSIZE 65536
void test_32bit_overflow(char *outfile, int (*out_counter), FILE *(*out))
{
if(ftell(*out) > 0x7f000000)
{
char string[1024];
fclose(*out);
sprintf(string, "%s%03d", outfile, ++(*out_counter));
(*out) = fopen(string, "wb");
}
}
int main(int argc, char *argv[])
{
mpeg3_t *file;
int i, j, result = 0;
unsigned char *output, **output_rows;
int out_counter = 0;
float *audio_output_f;
unsigned char *audio_output_i;
long total_samples = 0;
FILE *out;
char outfile[1024];
int decompress_audio = 0, decompress_video = 0;
int audio_track = 0;
/* Print cell offsets */
int print_offsets = 0;
int print_pids = 1;
outfile[0] = 0;
if(argc < 2)
{
printf(
"Dump information or extract audio to a 24 bit pcm file.\n"
"Example: dump -a0 outputfile.pcm take1.vob\n"
);
exit(1);
}
for(i = 1; i < argc; i++)
{
if(!strncmp(argv[i], "-a", 2))
{
// Check for track number
if(strlen(argv[i]) > 2)
{
audio_track = atol(argv[i] + 2);
}
// Check for filename
if(i + 1 < argc)
{
strcpy(outfile, argv[++i]);
decompress_audio = 1;
}
else
{
fprintf(stderr, "-a must be paired with a filename.\n");
exit(1);
}
// Check if file exists
if(out = fopen(outfile, "r"))
{
fprintf(stderr, "%s exists.\n", outfile);
exit(1);
}
}
}
int error = 0;
file = mpeg3_open(argv[argc - 1], &error);
if(outfile[0])
{
out = fopen(outfile, "wb");
}
if(file)
{
// Audio streams
fprintf(stderr, "total_astreams=%d\n", mpeg3_total_astreams(file));
for(i = 0; i < mpeg3_total_astreams(file); i++)
{
fprintf(stderr, " Stream 0x%04x: channels=%d rate=%d samples=%ld format=%s\n",
file->atrack[i]->demuxer->astream,
mpeg3_audio_channels(file, i),
mpeg3_sample_rate(file, i),
mpeg3_audio_samples(file, i),
mpeg3_audio_format(file, i));
if(print_offsets)
{
fprintf(stderr, "total_sample_offsets=%d\n", file->atrack[i]->total_sample_offsets);
for(j = 0; j < file->atrack[i]->total_sample_offsets; j++)
{
fprintf(stderr, "%jx ", file->atrack[i]->sample_offsets[j]);
if(j > 0 && !(j % 8)) fprintf(stderr, "\n");
}
fprintf(stderr, "\n");
}
}
// Video streams
fprintf(stderr, "total_vstreams=%d\n", mpeg3_total_vstreams(file));
for(i = 0; i < mpeg3_total_vstreams(file); i++)
{
fprintf(stderr, " Stream 0x%04x: w=%d h=%d framerate=%0.3f frames=%ld coding=%s\n",
file->vtrack[i]->demuxer->vstream,
mpeg3_video_width(file, i),
mpeg3_video_height(file, i),
mpeg3_frame_rate(file, i),
mpeg3_video_frames(file, i),
mpeg3_colormodel(file, i) == MPEG3_YUV420P ? "420" : "422");
if(print_offsets)
{
fprintf(stderr, "total_frame_offsets=%d\n", file->vtrack[i]->total_frame_offsets);
for(j = 0; j < file->vtrack[i]->total_frame_offsets; j++)
{
fprintf(stderr, "%d=%jx ", j, file->vtrack[i]->frame_offsets[j]);
if(j > 0 && !(j % 8)) fprintf(stderr, "\n");
}
fprintf(stderr, "\n");
fprintf(stderr, "total_keyframe_numbers=%d\n", file->vtrack[i]->total_keyframe_numbers);
for(j = 0; j < file->vtrack[i]->total_keyframe_numbers; j++)
{
fprintf(stderr, "%jd ", file->vtrack[i]->keyframe_numbers[j]);
if(j > 0 && !(j % 8)) fprintf(stderr, "\n");
}
fprintf(stderr, "\n");
}
}
// Subtitle tracks
printf("total subtitle tracks: %d\n", mpeg3_subtitle_tracks(file));
for(i = 0; i < mpeg3_subtitle_tracks(file); i++)
{
mpeg3_strack_t *strack = file->strack[i];
printf(" stream: 0x%02x total_offsets: %d\n",
strack->id,
strack->total_offsets);
if(print_offsets)
{
for(j = 0; j < strack->total_offsets; j++)
{
printf("%jx ", strack->offsets[j]);
}
printf("\n");
}
}
// Titles
fprintf(stderr, "total_titles=%d\n", file->demuxer->total_titles);
for(i = 0; i < file->demuxer->total_titles; i++)
{
fprintf(stderr, " Title path=%s total_bytes=%jx cell_table_size=%d\n",
file->demuxer->titles[i]->fs->path,
file->demuxer->titles[i]->total_bytes,
file->demuxer->titles[i]->cell_table_size);
if(print_offsets)
{
for(j = 0; j < file->demuxer->titles[i]->cell_table_size; j++)
fprintf(stderr, " Cell: %jx-%jx %jx-%jx program=%d\n",
file->demuxer->titles[i]->cell_table[j].program_start,
file->demuxer->titles[i]->cell_table[j].program_end,
file->demuxer->titles[i]->cell_table[j].title_start,
file->demuxer->titles[i]->cell_table[j].title_end,
file->demuxer->titles[i]->cell_table[j].program);
}
}
// Pids
if(print_pids)
{
mpeg3_demuxer_t *demuxer = file->demuxer;
printf("Total PIDs=%d\n", demuxer->total_pids);
for(i = 0; i < demuxer->total_pids; i++)
{
printf("0x%04x ", demuxer->pid_table[i]);
}
printf("\n");
}
// Write audio
if(decompress_audio)
{
mpeg3_set_cpus(file, 2);
audio_output_f = malloc(BUFSIZE * sizeof(float));
audio_output_i = malloc(BUFSIZE * 3 * mpeg3_audio_channels(file, audio_track));
//printf("%d\n", mpeg3_end_of_audio(file, audio_track));
while(!mpeg3_end_of_audio(file, audio_track) && !result)
{
test_32bit_overflow(outfile, &out_counter, &out);
for(i = 0; i < mpeg3_audio_channels(file, audio_track); i++)
{
if(i == 0)
result = mpeg3_read_audio(file,
audio_output_f,
0,
i,
BUFSIZE,
audio_track);
else
result = mpeg3_reread_audio(file,
audio_output_f, /* Pointer to pre-allocated buffer of floats */
0, /* Pointer to pre-allocated buffer of int16's */
i, /* Channel to decode */
BUFSIZE, /* Number of samples to decode */
audio_track);
for(j = 0; j < BUFSIZE; j++)
{
int sample = audio_output_f[j] * 0x7fffff;
unsigned char *output_i = audio_output_i + j * 3 * mpeg3_audio_channels(file, audio_track) + i * 3;
if(sample > 0x7fffff)
sample = 0x7fffff;
else
if(sample < -0x7fffff)
sample = -0x7fffff;
*output_i++ = (sample & 0xff0000) >> 16;
*output_i++ = (sample & 0xff00) >> 8;
*output_i = sample & 0xff;
}
}
result = !fwrite(audio_output_i, BUFSIZE * 3 * mpeg3_audio_channels(file, audio_track), 1, out);
}
}
/*
* audio_output_i = malloc(BUFSIZE * 2 * mpeg3_audio_channels(file, 0));
* mpeg3_seek_percentage(file, 0.1);
* result = mpeg3_read_audio(file, 0, audio_output_i, 1, BUFSIZE, 0);
*/
/*
* output = malloc(mpeg3_video_width(file, 0) * mpeg3_video_height(file, 0) * 3 + 4);
* output_rows = malloc(sizeof(unsigned char*) * mpeg3_video_height(file, 0));
* for(i = 0; i < mpeg3_video_height(file, 0); i++)
* output_rows[i] = &output[i * mpeg3_video_width(file, 0) * 3];
* printf("dump 1\n");
* mpeg3_seek_percentage(file, 0.375);
* result = mpeg3_read_frame(file,
* output_rows,
* 0,
* 0,
* mpeg3_video_width(file, 0),
* mpeg3_video_height(file, 0),
* mpeg3_video_width(file, 0),
* mpeg3_video_height(file, 0),
* MPEG3_RGB888,
* 0);
* printf("dump 2\n");
*/
mpeg3_close(file);
}
return 0;
}
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