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xport.c
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xport.c
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/*
Transport Stream Demultiplexer
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define TRUE 1
#define FALSE 0
#define VIDEO 0
#define AUDIO 1
#define PADDING 2
#define I 0
#define P 1
#define B 2
#define BI 3
#define SKIPPED 4
#define SEQUENCE_HEADER_CODE 0x000001b3
#define OPTION_CHAR '-'
void demux_mpeg2_transport_init(void);
void demux_mpeg2_transport(unsigned int, unsigned char *);
FILE *fpoutvideo, *fpoutaudio;
unsigned int program = 1;
unsigned int video_channel = 1;
unsigned int audio_channel = 1;
unsigned int pid_counter[0x2000];
unsigned long long packet_counter = 0;
unsigned long long pid_first_packet[0x2000];
unsigned long long pid_last_packet[0x2000];
unsigned long long pts_aligned = 0xffffffffffffffffLL;
unsigned int parse_only = FALSE;
unsigned int dump_audio_pts = FALSE;
unsigned int dump_video_pts = FALSE;
unsigned int timecode_mode = FALSE;
unsigned int dump_pids = FALSE;
unsigned int suppress_tsrate = FALSE;
unsigned int pes_streams = FALSE;
unsigned int dump_psip = FALSE;
unsigned int hdmv_mode = FALSE;
unsigned int dump_extra = FALSE;
unsigned int dump_pcr = FALSE;
unsigned int lpcm_mode = FALSE;
unsigned int force_mode = FALSE;
unsigned int dump_index = FALSE;
unsigned int running_average_bitrate = 0;
unsigned int running_average_bitrate_peak = 0;
unsigned int coded_frames = 0;
unsigned int video_fields = 0;
unsigned int video_progressive = 0;
unsigned long long last_video_pts = 0;
unsigned long long last_audio_pts = 0;
unsigned long long last_video_pts_diff = 0;
unsigned long long last_audio_pts_diff = 0;
unsigned short pcr_pid = 0xffff;
unsigned short video_pid = 0xffff;
unsigned short audio_pid = 0xffff;
unsigned char audio_stream_type;
unsigned char video_stream_type;
int main(int argc, char **argv)
{
FILE *fp;
static unsigned char buffer[16384];
unsigned int i, length;
int temp;
char videofilename[] = {"bits0001.mpv"};
char audiofilename[] = {"bits0001.mpa"};
if (argc != 5 && argc != 6) {
fprintf(stderr, "xport Transport Stream Demuxer 1.1\n\n");
fprintf(stderr, "Usage:\n");
fprintf(stderr, "\txport <-pavtdszgher2fi> <infile> <program number> <video stream number> <audio stream number>\n\n");
fprintf(stderr, "Options:\n");
fprintf(stderr, "\tp = parse only, do not demux to video and audio files\n");
fprintf(stderr, "\ta = dump audio PTS\n");
fprintf(stderr, "\tv = dump video PTS\n");
fprintf(stderr, "\tt = GOP timecode mode, count repeated fields/frames\n");
fprintf(stderr, "\td = dump all PID's (useful for debugging muxers, but tons of output)\n");
fprintf(stderr, "\ts = suppress TS rate dumping (useful when piping output to a file)\n");
fprintf(stderr, "\tz = demux to PES streams (instead of elementary streams)\n");
fprintf(stderr, "\tg = dump ATSC PSIP information\n");
fprintf(stderr, "\th = input file is in HDMV (AVCHD and Blu-ray) format (192 byte packets)\n");
fprintf(stderr, "\te = dump HDMV arrival_time_stamp difference\n");
fprintf(stderr, "\tr = dump PCR\n");
fprintf(stderr, "\t2 = only extract 2 channels of HDMV LPCM audio from multi-channel tracks\n");
fprintf(stderr, "\tf = force PID's and video stream type\n");
fprintf(stderr, "\ti = dump index info\n");
exit(-1);
}
if (argc == 5) {
/*--- open binary file (for parsing) ---*/
fp = fopen(argv[1], "rb");
if (fp == 0) {
fprintf(stderr, "Cannot open bitstream file <%s>\n", argv[1]);
exit(-1);
}
}
else {
if (*argv[1] == OPTION_CHAR) {
for (i = 1; i < strlen(argv[1]); i++) {
switch (argv[1][i]) {
case 'p':
case 'P':
parse_only = TRUE;
break;
case 'a':
case 'A':
dump_audio_pts = TRUE;
break;
case 'v':
case 'V':
dump_video_pts = TRUE;
break;
case 't':
case 'T':
timecode_mode = TRUE;
break;
case 'd':
case 'D':
dump_pids = TRUE;
break;
case 's':
case 'S':
suppress_tsrate = TRUE;
break;
case 'z':
case 'Z':
pes_streams = TRUE;
break;
case 'g':
case 'G':
dump_psip = TRUE;
break;
case 'h':
case 'H':
hdmv_mode = TRUE;
break;
case 'e':
case 'E':
dump_extra = TRUE;
break;
case 'r':
case 'R':
dump_pcr = TRUE;
break;
case '2':
lpcm_mode = TRUE;
break;
case 'f':
case 'F':
force_mode = TRUE;
break;
case 'i':
case 'I':
dump_index = TRUE;
break;
default:
fprintf(stderr, "Unsupported Option: %c\n", argv[1][i]);
}
}
}
else {
fprintf(stderr, "xport Transport Stream Demuxer 1.1\n\n");
fprintf(stderr, "Usage:\n");
fprintf(stderr, "\txport <-pavtdszgher2fi> <infile> <program number> <video stream number> <audio stream number>\n\n");
fprintf(stderr, "Options:\n");
fprintf(stderr, "\tp = parse only, do not demux to video and audio files\n");
fprintf(stderr, "\ta = dump audio PTS\n");
fprintf(stderr, "\tv = dump video PTS\n");
fprintf(stderr, "\tt = GOP timecode mode, count repeated fields/frames\n");
fprintf(stderr, "\td = dump all PID's (useful for debugging muxers, but tons of output)\n");
fprintf(stderr, "\ts = suppress TS rate dumping (useful when piping output to a file)\n");
fprintf(stderr, "\tz = demux to PES streams (instead of elementary streams)\n");
fprintf(stderr, "\tg = dump ATSC PSIP information\n");
fprintf(stderr, "\th = input file is in HDMV (AVCHD and Blu-ray) format (192 byte packets)\n");
fprintf(stderr, "\te = dump HDMV arrival_time_stamp difference\n");
fprintf(stderr, "\tr = dump PCR\n");
fprintf(stderr, "\t2 = only extract 2 channels of HDMV LPCM audio from multi-channel tracks\n");
fprintf(stderr, "\tf = force PID's and video stream type\n");
fprintf(stderr, "\ti = dump index info\n");
exit(-1);
}
/*--- open binary file (for parsing) ---*/
fp = fopen(argv[2], "rb");
if (fp == 0) {
fprintf(stderr, "Cannot open bitstream file <%s>\n", argv[2]);
exit(-1);
}
}
if (parse_only == FALSE) {
/*--- open binary file (for video output) ---*/
fpoutvideo = fopen(&videofilename[0], "wb");
if (fpoutvideo == 0) {
fprintf(stderr, "Cannot open video output file <%s>\n", &videofilename[0]);
exit(-1);
}
/*--- open binary file (for audio output) ---*/
fpoutaudio = fopen(&audiofilename[0], "wb");
if (fpoutaudio == 0) {
fprintf(stderr, "Cannot open audio output file <%s>\n", &audiofilename[0]);
exit(-1);
}
}
if (argc == 5) {
program = atoi(argv[2]);
video_channel = atoi(argv[3]);
audio_channel = atoi(argv[4]);
}
else {
if (force_mode == TRUE) {
video_pid = (unsigned short)strtoul(argv[3], NULL, 16);
if (video_pid == 0) {
video_channel = 0;
}
audio_pid = (unsigned short)strtoul(argv[4], NULL, 16);
video_stream_type = (unsigned char)strtoul(argv[5], NULL, 16);
audio_stream_type = 0x81;
pcr_pid = video_pid;
}
else {
program = atoi(argv[3]);
video_channel = atoi(argv[4]);
audio_channel = atoi(argv[5]);
}
}
printf("xport Transport Stream Demuxer 1.1\n");
printf("program = %d, video channel = %d, audio channel = %d\n", program, video_channel, audio_channel);
demux_mpeg2_transport_init();
while (!feof(fp)) {
length = fread(&buffer[0], 1, 16384, fp);
demux_mpeg2_transport(length, &buffer[0]);
}
printf("\n");
for (i = 0; i < 0x2000; i++) {
if (pid_counter[i] != 0) {
printf("packets for pid %4d <0x%04x> = %d, first = %lld, last = %lld\n", i, i, pid_counter[i], pid_first_packet[i], pid_last_packet[i]);
}
}
if (video_progressive == 0) {
printf("coded pictures = %d, video fields = %d\n", coded_frames, video_fields);
}
else {
printf("coded pictures = %d, video frames = %d\n", coded_frames, video_fields);
}
temp = (int)((last_audio_pts + last_audio_pts_diff) - (last_video_pts + last_video_pts_diff));
printf("Ending audio to video PTS difference = %d ticks, %f milliseconds\n", temp, (double)temp / 90.0);
fclose(fp);
if (parse_only == FALSE) {
fclose(fpoutvideo);
fclose(fpoutaudio);
}
return 0;
}
void parse_ac3_audio(unsigned char *es_ptr, unsigned int length, unsigned long long pts, unsigned int first_access_unit)
{
unsigned int i, j;
static int first_header = FALSE;
static int second_header = FALSE;
static int audio_synced = FALSE;
static int first_synced = FALSE;
static unsigned int parse = 0;
static unsigned int header_parse = 0;
static unsigned int frame_size = 0;
static unsigned int frame_size_check = 0;
static unsigned char frame_buffer[128][3840 + 8];
static unsigned char frame_buffer_start = 0x0b;
static unsigned int frame_buffer_index = 0;
static unsigned int frame_buffer_count = 0;
static unsigned int frame_buffer_length[128];
static unsigned long long frame_buffer_pts[128];
static unsigned long long current_pts;
static unsigned long long current_pts_saved;
static unsigned int current_pts_valid = FALSE;
static unsigned int audio_sampling_rate;
static unsigned int audio_bitrate;
static unsigned int audio_bsid;
static unsigned int audio_bsmod;
static unsigned int audio_acmod;
if (parse_only == FALSE) {
if (audio_synced == TRUE) {
fwrite(es_ptr, 1, length, fpoutaudio);
}
}
if (audio_synced == FALSE) {
if (first_access_unit == TRUE) {
current_pts_saved = pts;
current_pts_valid = TRUE;
}
for (i = 0; i < length; i++) {
parse = (parse << 8) + *es_ptr++;
if ((parse & 0xffff) == 0x00000b77) {
if (current_pts_valid == TRUE) {
current_pts = current_pts_saved;
current_pts_valid = FALSE;
}
else {
if (frame_size_check != 0) {
if (frame_buffer_index == frame_size_check) {
current_pts += ((1536 * 90000) / audio_sampling_rate);
}
}
}
if (first_header == FALSE) {
header_parse = 5;
first_header = TRUE;
frame_buffer_pts[frame_buffer_count] = current_pts;
}
else if (second_header == FALSE) {
if (frame_size == 5) {
second_header = TRUE;
printf("Audio Bitrate = %d, Audio Sampling Rate = %d\n", audio_bitrate, audio_sampling_rate);
switch (audio_acmod & 0x7) {
case 7:
printf("Audio Mode = 3/2, bsid = %d, bsmod = %d\n", audio_bsid, audio_bsmod);
break;
case 6:
printf("Audio Mode = 2/2, bsid = %d, bsmod = %d\n", audio_bsid, audio_bsmod);
break;
case 5:
printf("Audio Mode = 3/1, bsid = %d, bsmod = %d\n", audio_bsid, audio_bsmod);
break;
case 4:
printf("Audio Mode = 2/1, bsid = %d, bsmod = %d\n", audio_bsid, audio_bsmod);
break;
case 3:
printf("Audio Mode = 3/0, bsid = %d, bsmod = %d\n", audio_bsid, audio_bsmod);
break;
case 2:
printf("Audio Mode = 2/0, bsid = %d, bsmod = %d\n", audio_bsid, audio_bsmod);
break;
case 1:
printf("Audio Mode = 1/0, bsid = %d, bsmod = %d\n", audio_bsid, audio_bsmod);
break;
case 0:
printf("Audio Mode = 1+1, bsid = %d, bsmod = %d\n", audio_bsid, audio_bsmod);
break;
}
if (audio_synced == FALSE) {
frame_buffer_length[frame_buffer_count] = frame_buffer_index;
frame_buffer_index = 0;
frame_buffer_count++;
frame_buffer_count &= 0x7f;
frame_buffer_pts[frame_buffer_count] = current_pts;
}
}
else {
printf("sync word mismatch!\n");
first_header = FALSE;
frame_buffer_count = 0;
frame_buffer_index = 0;
}
}
else {
if (audio_synced == FALSE) {
if (frame_buffer_index == frame_size_check) {
frame_buffer_length[frame_buffer_count] = frame_buffer_index;
frame_buffer_index = 0;
frame_buffer_count++;
frame_buffer_count &= 0x7f;
frame_buffer_pts[frame_buffer_count] = current_pts;
}
}
}
}
else if (header_parse != 0) {
--header_parse;
if (header_parse == 2) {
switch ((parse & 0xc0) >> 6) {
case 3:
audio_sampling_rate = 0;
break;
case 2:
audio_sampling_rate = 32000;
break;
case 1:
audio_sampling_rate = 44100;
break;
case 0:
audio_sampling_rate = 48000;
break;
}
switch ((parse & 0x3f) >> 1) {
case 18:
audio_bitrate = 640000;
break;
case 17:
audio_bitrate = 576000;
break;
case 16:
audio_bitrate = 512000;
break;
case 15:
audio_bitrate = 448000;
break;
case 14:
audio_bitrate = 384000;
break;
case 13:
audio_bitrate = 320000;
break;
case 12:
audio_bitrate = 256000;
break;
case 11:
audio_bitrate = 224000;
break;
case 10:
audio_bitrate = 192000;
break;
case 9:
audio_bitrate = 160000;
break;
case 8:
audio_bitrate = 128000;
break;
case 7:
audio_bitrate = 112000;
break;
case 6:
audio_bitrate = 96000;
break;
case 5:
audio_bitrate = 80000;
break;
case 4:
audio_bitrate = 64000;
break;
case 3:
audio_bitrate = 56000;
break;
case 2:
audio_bitrate = 48000;
break;
case 1:
audio_bitrate = 40000;
break;
case 0:
audio_bitrate = 32000;
break;
default:
audio_bitrate = 0;
}
}
else if (header_parse == 1) {
audio_bsid = (parse & 0xf8) >> 3;
audio_bsmod = parse & 0x7;
}
else if (header_parse == 0) {
audio_acmod = (parse & 0xe0) >> 5;
if (audio_sampling_rate == 0 || audio_bitrate == 0) {
first_header = FALSE;
}
else {
frame_size = audio_bitrate * 192 / audio_sampling_rate;
frame_size_check = audio_bitrate * 192 / audio_sampling_rate;
}
}
}
if (audio_synced == FALSE && first_header == TRUE && second_header == TRUE) {
if (pts_aligned != 0xffffffffffffffffLL || video_channel == 0) {
if (current_pts >= pts_aligned || video_channel == 0) {
audio_synced = TRUE;
frame_buffer_length[frame_buffer_count] = frame_buffer_index;
for (j = 0; j <= frame_buffer_count; j++) {
if ((frame_buffer_pts[j] + 2800) > pts_aligned || video_channel == 0) {
#if 0
printf("j = %d, pts = 0x%08x, length = %d\n", j, (unsigned int)frame_buffer_pts[j], frame_buffer_length[j]);
#endif
if (first_synced == FALSE) {
first_synced = TRUE;
if (video_channel == 0) {
printf("First Audio PTS = 0x%08x\n", (unsigned int)frame_buffer_pts[j]);
}
else {
printf("First Audio PTS = 0x%08x, %d\n", (unsigned int)frame_buffer_pts[j], (unsigned int)(frame_buffer_pts[j] - pts_aligned));
}
if (parse_only == FALSE) {
fwrite(&frame_buffer_start, 1, 1, fpoutaudio);
}
}
if (parse_only == FALSE) {
fwrite(&frame_buffer[j][0], 1, frame_buffer_length[j], fpoutaudio);
}
}
}
if (parse_only == FALSE) {
fwrite(es_ptr - 1, 1, length - i, fpoutaudio);
}
}
else {
--frame_size;
frame_buffer[frame_buffer_count][frame_buffer_index++] = (unsigned char)parse & 0xff;
if (frame_buffer_index == (3840 + 8)) {
--frame_buffer_index;
}
}
}
else {
--frame_size;
frame_buffer[frame_buffer_count][frame_buffer_index++] = (unsigned char)parse & 0xff;
if (frame_buffer_index == (3840 + 8)) {
--frame_buffer_index;
}
}
}
else if (first_header == TRUE) {
--frame_size;
frame_buffer[frame_buffer_count][frame_buffer_index++] = (unsigned char)parse & 0xff;
if (frame_buffer_index == (3840 + 8)) {
--frame_buffer_index;
}
}
}
}
}
void parse_mp2_audio(unsigned char *es_ptr, unsigned int length, unsigned long long pts, unsigned int first_access_unit)
{
unsigned int i, j;
static int first_header = FALSE;
static int second_header = FALSE;
static int audio_synced = FALSE;
static int first_synced = FALSE;
static unsigned int parse = 0;
static unsigned int header_parse = 0;
static unsigned int frame_size = 0;
static unsigned int frame_size_check = 0;
static unsigned char frame_buffer[128][3840 + 8];
static unsigned char frame_buffer_start = 0xff;
static unsigned int frame_buffer_index = 0;
static unsigned int frame_buffer_count = 0;
static unsigned int frame_buffer_length[128];
static unsigned long long frame_buffer_pts[128];
static unsigned long long current_pts;
static unsigned long long current_pts_saved;
static unsigned int current_pts_valid = FALSE;
static unsigned int audio_sampling_rate;
static unsigned int audio_bitrate;
static unsigned int audio_mode;
static unsigned int audio_mode_ext;
static unsigned int audio_copyright;
static unsigned int audio_original;
static unsigned int audio_emphasis;
if (parse_only == FALSE) {
if (audio_synced == TRUE) {
fwrite(es_ptr, 1, length, fpoutaudio);
}
}
if (audio_synced == FALSE) {
if (first_access_unit == TRUE) {
current_pts_saved = pts;
current_pts_valid = TRUE;
}
for (i = 0; i < length; i++) {
parse = (parse << 8) + *es_ptr++;
#if 1
if ((parse & 0xffff) == 0x0000fffc || (parse & 0xffff) == 0x0000fffd) {
#else
if ((parse & 0xffff) == 0x0000fffc) {
#endif
if (current_pts_valid == TRUE) {
current_pts = current_pts_saved;
current_pts_valid = FALSE;
}
else {
if (frame_size_check != 0) {
if (frame_buffer_index == frame_size_check) {
current_pts += ((1152 * 90000) / audio_sampling_rate);
}
}
}
if (first_header == FALSE) {
header_parse = 2;
first_header = TRUE;
frame_buffer_pts[frame_buffer_count] = current_pts;
}
else if (second_header == FALSE) {
if (frame_size == 2) {
second_header = TRUE;
printf("Audio Bitrate = %d, Audio Sampling Rate = %d\n", audio_bitrate, audio_sampling_rate);
switch (audio_mode & 0x3) {
case 3:
printf("Audio Mode = Single Channel, mode_extension = %d\n", audio_mode_ext);
break;
case 2:
printf("Audio Mode = Dual Channel, mode_extension = %d\n", audio_mode_ext);
break;
case 1:
printf("Audio Mode = Joint Stereo, mode_extension = %d\n", audio_mode_ext);
break;
case 0:
printf("Audio Mode = Stereo, mode_extension = %d\n", audio_mode_ext);
break;
}
switch (audio_emphasis & 0x3) {
case 3:
printf("Audio Emphasis = CCITT J.17, copyright = %d, original = %d\n", audio_copyright, audio_original);
break;
case 2:
printf("Audio Emphasis = Reserved, copyright = %d, original = %d\n", audio_copyright, audio_original);
break;
case 1:
printf("Audio Emphasis = 50/15 usec, copyright = %d, original = %d\n", audio_copyright, audio_original);
break;
case 0:
printf("Audio Emphasis = None, copyright = %d, original = %d\n", audio_copyright, audio_original);
break;
}
if (audio_synced == FALSE) {
frame_buffer_length[frame_buffer_count] = frame_buffer_index;
frame_buffer_index = 0;
frame_buffer_count++;
frame_buffer_count &= 0x7f;
frame_buffer_pts[frame_buffer_count] = current_pts;
}
}
else {
first_header = FALSE;
frame_buffer_count = 0;
frame_buffer_index = 0;
}
}
else {
if (audio_synced == FALSE) {
if (frame_buffer_index == frame_size_check) {
frame_buffer_length[frame_buffer_count] = frame_buffer_index;
frame_buffer_index = 0;
frame_buffer_count++;
frame_buffer_count &= 0x7f;
frame_buffer_pts[frame_buffer_count] = current_pts;
}
}
}
}
else if (header_parse != 0) {
--header_parse;
if (header_parse == 1) {
switch ((parse & 0xc) >> 2) {
case 3:
audio_sampling_rate = 0;
break;
case 2:
audio_sampling_rate = 32000;
break;
case 1:
audio_sampling_rate = 48000;
break;
case 0:
audio_sampling_rate = 44100;
break;
}
switch ((parse & 0xf0) >> 4) {
case 14:
audio_bitrate = 384000;
break;
case 13:
audio_bitrate = 320000;
break;
case 12:
audio_bitrate = 256000;
break;
case 11:
audio_bitrate = 224000;
break;
case 10:
audio_bitrate = 192000;
break;
case 9:
audio_bitrate = 160000;
break;
case 8:
audio_bitrate = 128000;
break;
case 7:
audio_bitrate = 112000;
break;
case 6:
audio_bitrate = 96000;
break;
case 5:
audio_bitrate = 80000;
break;
case 4:
audio_bitrate = 64000;
break;
case 3:
audio_bitrate = 56000;
break;
case 2:
audio_bitrate = 48000;
break;
case 1:
audio_bitrate = 32000;
break;
case 0:
audio_bitrate = 0;
break;
default:
audio_bitrate = 0;
}
}
else if (header_parse == 0) {
audio_mode = (parse & 0xc0) >> 6;
audio_mode_ext = (parse & 0x30) >> 4;
audio_copyright = (parse & 0x8) >> 3;
audio_original = (parse & 0x4) >> 2;
audio_emphasis = parse & 0x3;
if (audio_sampling_rate == 0 || audio_bitrate == 0) {
first_header = FALSE;
}
else {
frame_size = audio_bitrate * 144 / audio_sampling_rate;
frame_size_check = audio_bitrate * 144 / audio_sampling_rate;
}
}
}
if (audio_synced == FALSE && first_header == TRUE && second_header == TRUE) {
if (pts_aligned != 0xffffffffffffffffLL || video_channel == 0) {
if (current_pts >= pts_aligned || video_channel == 0) {
audio_synced = TRUE;
frame_buffer_length[frame_buffer_count] = frame_buffer_index;
for (j = 0; j <= frame_buffer_count; j++) {
if ((frame_buffer_pts[j] + 2160) > pts_aligned || video_channel == 0) {
#if 0
printf("j = %d, pts = 0x%08x, length = %d\n", j, (unsigned int)frame_buffer_pts[j], frame_buffer_length[j]);
#endif
if (first_synced == FALSE) {
first_synced = TRUE;
if (video_channel == 0) {
printf("First Audio PTS = 0x%08x\n", (unsigned int)frame_buffer_pts[j]);
}
else {
printf("First Audio PTS = 0x%08x, %d\n", (unsigned int)frame_buffer_pts[j], (unsigned int)(frame_buffer_pts[j] - pts_aligned));
}
if (parse_only == FALSE) {
fwrite(&frame_buffer_start, 1, 1, fpoutaudio);
}
}
if (parse_only == FALSE) {
fwrite(&frame_buffer[j][0], 1, frame_buffer_length[j], fpoutaudio);
}
}
}
if (parse_only == FALSE) {
fwrite(es_ptr - 1, 1, length - i, fpoutaudio);
}
}
else {
--frame_size;
frame_buffer[frame_buffer_count][frame_buffer_index++] = (unsigned char)parse & 0xff;
if (frame_buffer_index == (3840 + 8)) {
--frame_buffer_index;
}
}
}
else {
--frame_size;
frame_buffer[frame_buffer_count][frame_buffer_index++] = (unsigned char)parse & 0xff;
if (frame_buffer_index == (3840 + 8)) {
--frame_buffer_index;
}
}
}
else if (first_header == TRUE) {
--frame_size;
frame_buffer[frame_buffer_count][frame_buffer_index++] = (unsigned char)parse & 0xff;
if (frame_buffer_index == (3840 + 8)) {
--frame_buffer_index;
}
}
}
}
}
void parse_lpcm_audio(unsigned char *es_ptr, unsigned int length, unsigned long long pts, unsigned int first_access_unit, unsigned short lpcm_header_flags)
{
unsigned int i, j, channels, sample_bytes, adjusted_length, index = 0;
static unsigned int sample;
static unsigned int first_header_dump = FALSE;
static unsigned int extra_bytes = 0;
static unsigned char extra_bytes_buffer[4];
static unsigned char temp_buffer[188];
static unsigned char null_bytes[4] = {0, 0, 0, 0};
if (first_access_unit == TRUE) {
if (sample != 0) {
extra_bytes = 0;
}
}
for (i = 0; i < extra_bytes; i++) {
temp_buffer[index++] = extra_bytes_buffer[i];
}
for (i = 0; i < length; i++) {
temp_buffer[index++] = *es_ptr++;
}
length = length + extra_bytes;
es_ptr = &temp_buffer[0];
if (first_header_dump == FALSE) {
first_header_dump = TRUE;
switch ((lpcm_header_flags & 0xf000) >> 12) {
case 1:
printf("LPCM Audio Mode = 1/0\n");
break;
case 3:
printf("LPCM Audio Mode = 2/0\n");
break;
case 4:
printf("LPCM Audio Mode = 3/0\n");
break;
case 5:
printf("LPCM Audio Mode = 2/1\n");
break;
case 6:
printf("LPCM Audio Mode = 3/1\n");
break;
case 7:
printf("LPCM Audio Mode = 2/2\n");
break;
case 8:
printf("LPCM Audio Mode = 3/2\n");
break;
case 9:
printf("LPCM Audio Mode = 3/2+lfe\n");
break;
case 10:
printf("LPCM Audio Mode = 3/4\n");
break;
case 11:
printf("LPCM Audio Mode = 3/4+lfe\n");
break;
default:
printf("LPCM Audio Mode = reserved\n");
break;
}
switch ((lpcm_header_flags & 0xc0) >> 6) {
case 1:
printf("LPCM Audio Bits/sample = 16\n");
break;
case 2:
printf("LPCM Audio Bits/sample = 20\n");
break;
case 3:
printf("LPCM Audio Bits/sample = 24\n");
break;
default:
printf("LPCM Audio Bits/sample = reserved\n");
break;
}
switch ((lpcm_header_flags & 0xf00) >> 8) {
case 1:
printf("LPCM Audio Sample Rate = 48000\n");
break;
case 4:
printf("LPCM Audio Sample Rate = 96000\n");
break;
case 5:
printf("LPCM Audio Sample Rate = 192000\n");
break;
default:
printf("LPCM Audio Sample Rate = reserved\n");
break;
}
}
switch ((lpcm_header_flags & 0xf000) >> 12) {
case 1:
channels = 2;
break;
case 3:
channels = 2;
break;
case 4:
channels = 4;
break;
case 5:
channels = 4;
break;
case 6:
channels = 4;
break;
case 7:
channels = 4;
break;
case 8:
channels = 6;
break;
case 9:
channels = 6;
break;
case 10:
channels = 8;
break;
case 11:
channels = 8;
break;
default:
channels = 2;
break;
}
switch ((lpcm_header_flags & 0xc0) >> 6) {
case 1:
sample_bytes = 2;
break;
case 2:
sample_bytes = 3;
break;
case 3:
sample_bytes = 3;
break;
default:
sample_bytes = 2;
break;
}
if (first_access_unit == TRUE) {
if (sample != 0) {
printf("LPCM sample resync, adding %d samples\n", channels - sample);
for (i = 0; i < (channels - sample); i++) {
fwrite(&null_bytes[0], 1, sample_bytes, fpoutaudio);
}
sample = 0;
}
}
i = 0;
j = length / sample_bytes;
adjusted_length = j * sample_bytes;
extra_bytes = length - adjusted_length;
while (i < adjusted_length) {
switch (sample) {
case 0:
if (parse_only == FALSE) {
fwrite(es_ptr, 1, sample_bytes, fpoutaudio);
}
es_ptr += sample_bytes;
i += sample_bytes;
sample++;
if (sample == channels) {
sample = 0;
}
break;
case 1:
if (parse_only == FALSE) {
fwrite(es_ptr, 1, sample_bytes, fpoutaudio);
}
es_ptr += sample_bytes;
i += sample_bytes;
sample++;
if (sample == channels) {
sample = 0;
}
break;
case 2:
if (parse_only == FALSE && lpcm_mode == FALSE) {
fwrite(es_ptr, 1, sample_bytes, fpoutaudio);
}
es_ptr += sample_bytes;
i += sample_bytes;
sample++;
if (sample == channels) {
sample = 0;
}
break;
case 3:
if (parse_only == FALSE && lpcm_mode == FALSE) {
fwrite(es_ptr, 1, sample_bytes, fpoutaudio);
}
es_ptr += sample_bytes;
i += sample_bytes;
sample++;
if (sample == channels) {
sample = 0;
}
break;
case 4:
if (parse_only == FALSE && lpcm_mode == FALSE) {
fwrite(es_ptr, 1, sample_bytes, fpoutaudio);
}
es_ptr += sample_bytes;
i += sample_bytes;
sample++;
if (sample == channels) {
sample = 0;
}
break;
case 5:
if (parse_only == FALSE && lpcm_mode == FALSE) {
fwrite(es_ptr, 1, sample_bytes, fpoutaudio);