bool CMpeg3AudioByteStream::start_next_frame (uint8_t **buffer,
uint32_t *buflen,
frame_timestamp_t *pts,
void **ud)
{
uint64_t ts;
uint32_t freq_ts;
if (m_eof) {
return false;
}
m_eof = mpeg2ps_get_audio_frame(m_file,
m_stream,
buffer,
buflen,
TS_MSEC,
&freq_ts,
&ts) == false;
if (m_eof) return false;
#ifdef OUTPUT_TO_FILE
fwrite(*buffer, buflen, 1, m_output_file);
#endif
pts->audio_freq_timestamp = freq_ts;
pts->audio_freq = m_freq;
pts->msec_timestamp = ts;
pts->timestamp_is_pts = false;
#ifdef DEBUG_MPEG_FRAME
mpeg3f_message(LOG_DEBUG, "audiostart %u %u "U64, *buflen, freq_ts, ts);
#endif
return true;
}
int main(int argc, char** argv)
{
char* usageString = "[--video] [--audio] <file-name>\n";
bool dump_audio = false, dump_video = false;
uint audio_stream = 0, video_stream = 0;
char *infilename;
char outfilename[FILENAME_MAX], *suffix;
size_t suffix_len;
FILE *outfile;
mpeg2ps_t *infile;
/* begin processing command line */
char* progName = argv[0];
long cnt = 0;
bool dump = false;
while (1) {
int c = -1;
int option_index = 0;
static struct option long_options[] = {
{ "audio", 2, 0, 'a' },
{ "video", 2, 0, 'v' },
{ "dump", 0, 0, 'd' },
{ "version", 0, 0, 'V' },
{ NULL, 0, 0, 0 }
};
c = getopt_long_only(argc, argv, "a:v:Vd",
long_options, &option_index);
if (c == -1)
break;
switch (c) {
case 'v':
dump_video = true;
if (optarg) {
uint32_t readstream;
if (sscanf(optarg, "%u", &readstream) == 1) {
video_stream = readstream;
}
}
break;
case 'a':
dump_audio = true;
if (optarg) {
uint32_t readstream;
if (sscanf(optarg, "%u", &readstream) == 1) {
audio_stream = readstream;
}
}
break;
case 'd':
dump = true;
break;
case 'V':
fprintf(stderr, "%s - %s version %s\n",
progName, MPEG4IP_PACKAGE, MPEG4IP_VERSION);
exit(0);
default:
fprintf(stderr, "%s: unknown option specified, ignoring: %c\n",
progName, c);
}
}
if ((argc - optind) < 1) {
fprintf(stderr, "usage: %s %s\n", progName, usageString);
exit(1);
}
#if 0
if (dump_audio == 0 && dump_video == 0) {
dump_audio = dump_video = 1;
}
#endif
while (optind < argc) {
infilename = argv[optind];
optind++;
suffix = strrchr(infilename, '.');
suffix_len = suffix - infilename;
if (suffix == NULL) {
fprintf(stderr, "can't find suffix in %s\n", infilename);
continue;
}
infile = mpeg2ps_init(infilename);
if (infile == NULL) {
fprintf(stderr, "%s is not a valid mpeg file\n",
infilename);
continue;
}
uint8_t *buf = NULL;
uint32_t len = 0;
uint64_t ftime;
uint32_t freq_ftime;
uint32_t last_freq_time = 0;
if (dump_audio) {
if (mpeg2ps_get_audio_stream_count(infile) == 0) {
fprintf(stderr, "no audio streams in %s\n", infilename);
} else if (audio_stream >= mpeg2ps_get_audio_stream_count(infile)) {
fprintf(stderr, "audio stream %d does not exist\n", audio_stream);
} else {
char *slash;
slash = strrchr(infilename, '/');
if (slash != NULL) {
slash++;
suffix_len = suffix - slash;
memcpy(outfilename, slash, suffix_len);
} else {
memcpy(outfilename, infilename, suffix_len);
}
mpeg2ps_audio_type_t audio_type =
mpeg2ps_get_audio_stream_type(infile, audio_stream);
switch (audio_type) {
case MPEG_AUDIO_MPEG:
strcpy(outfilename + suffix_len, ".mp3");
break;
case MPEG_AUDIO_AC3:
strcpy(outfilename + suffix_len, ".ac3");
break;
case MPEG_AUDIO_LPCM:
strcpy(outfilename + suffix_len, ".pcm");
break;
default:
break;
}
outfile = fopen(outfilename, FOPEN_WRITE_BINARY);
while (mpeg2ps_get_audio_frame(infile,
audio_stream,
&buf,
&len,
TS_MSEC,
&freq_ftime,
&ftime)) {
printf("audio len %d time %u "U64"\n",
len, freq_ftime, ftime);
if (audio_type == MPEG_AUDIO_LPCM) {
if (last_freq_time != 0) {
if (last_freq_time != freq_ftime) {
printf("error in timestamp %u %u\n", freq_ftime, last_freq_time);
}
}
last_freq_time = freq_ftime + (len / 4);
#if 0
if (last_freq_time + 1152 != freq_ftime) {
printf("error in timestamp %d\n", freq_ftime - last_freq_time);
}
last_freq_time = freq_ftime;
#endif
}
fwrite(buf, len, 1, outfile);
cnt++;
}
fclose(outfile);
printf("%ld audio frames\n", cnt);
}
}
if (dump_video) {
if (mpeg2ps_get_video_stream_count(infile) == 0) {
fprintf(stderr, "no video streams in %s\n", infilename);
} else if (video_stream >= mpeg2ps_get_video_stream_count(infile)) {
fprintf(stderr, "video stream %d does not exist\n", video_stream);
} else {
char *slash;
slash = strrchr(infilename, '/');
if (slash != NULL) {
slash++;
suffix_len = suffix - slash;
memcpy(outfilename, slash, suffix_len);
} else {
memcpy(outfilename, infilename, suffix_len);
}
mpeg2ps_video_type_t video_type =
mpeg2ps_get_video_stream_type(infile, video_stream);
switch (video_type) {
case MPEG_VIDEO_H264:
strcpy(outfilename + suffix_len, ".264");
break;
default:
strcpy(outfilename + suffix_len, ".m2v");
}
outfile = fopen(outfilename, FOPEN_WRITE_BINARY);
cnt = 0;
while (mpeg2ps_get_video_frame(infile,
video_stream,
&buf,
&len,
NULL,
TS_MSEC,
&ftime)) {
printf("video len %d time "U64"\n",
len, ftime);
if (buf[len - 2] == 1 &&
buf[len - 3] == 0 &&
buf[len - 4] == 0) len -= 4;
fwrite(buf, len, 1, outfile);
cnt++;
}
fclose(outfile);
printf("%ld video frames\n", cnt);
}
}
mpeg2ps_close(infile);
}
return 0;
}
static MP4TrackId AudioCreate (MP4FileHandle mp4file,
mpeg2ps_t *file,
int astream,
bool doEncrypt)
{
uint16_t freq;
int type;
MP4TrackId id;
uint16_t samples_per_frame;
uint8_t *buf = NULL;
uint32_t blen = 0;
uint32_t frame_num = 1;
ismacryp_session_id_t ismaCrypSId;
mp4v2_ismacrypParams *icPp = (mp4v2_ismacrypParams *) malloc(sizeof(mp4v2_ismacrypParams));
MP4AV_Mp3Header hdr;
u_int8_t mpegVersion;
memset(icPp, 0, sizeof(mp4v2_ismacrypParams));
type = mpeg2ps_get_audio_stream_type(file, astream);
if (type != MPEG_AUDIO_MPEG) {
fprintf(stderr, "Unsupported audio format %d in audio stream %d\n",
type, astream);
return MP4_INVALID_TRACK_ID;
}
freq = mpeg2ps_get_audio_stream_sample_freq(file, astream);
if (mpeg2ps_get_audio_frame(file,
astream,
&buf,
&blen,
TS_90000,
NULL,
NULL) == false) {
fprintf(stderr, "No audio tracks in audio stream %d\n", astream);
return MP4_INVALID_TRACK_ID;
}
hdr = MP4AV_Mp3HeaderFromBytes(buf);
mpegVersion = MP4AV_Mp3GetHdrVersion(hdr);
samples_per_frame = MP4AV_Mp3GetHdrSamplingWindow(hdr);
u_int8_t audioType = MP4AV_Mp3ToMp4AudioType(mpegVersion);
if (audioType == MP4_INVALID_AUDIO_TYPE
|| samples_per_frame == 0) {
fprintf(stderr,
"%s: data in file doesn't appear to be valid audio\n",
ProgName);
return MP4_INVALID_TRACK_ID;
}
MP4Duration duration = (90000 * samples_per_frame) / freq;
if (doEncrypt) {
// initialize the ismacryp session
if (ismacrypInitSession(&ismaCrypSId,KeyTypeAudio) != 0) {
fprintf(stderr,
"%s: could not initialize the ISMAcryp session\n",
ProgName);
return MP4_INVALID_TRACK_ID;
}
if (ismacrypGetScheme(ismaCrypSId, &(icPp->scheme_type)) != ismacryp_rc_ok) {
fprintf(stderr, "%s: could not get ismacryp scheme type. sid %d\n",
ProgName, ismaCrypSId);
ismacrypEndSession(ismaCrypSId);
return MP4_INVALID_TRACK_ID;
}
if (ismacrypGetSchemeVersion(ismaCrypSId, &(icPp->scheme_version)) != ismacryp_rc_ok) {
fprintf(stderr, "%s: could not get ismacryp scheme ver. sid %d\n",
ProgName, ismaCrypSId);
ismacrypEndSession(ismaCrypSId);
return MP4_INVALID_TRACK_ID;
}
if (ismacrypGetKMSUri(ismaCrypSId, &(icPp->kms_uri)) != ismacryp_rc_ok) {
fprintf(stderr, "%s: could not get ismacryp kms uri. sid %d\n",
ProgName, ismaCrypSId);
if (icPp->kms_uri != NULL) free(icPp->kms_uri);
ismacrypEndSession(ismaCrypSId);
return MP4_INVALID_TRACK_ID;
}
if ( ismacrypGetSelectiveEncryption(ismaCrypSId, &(icPp->selective_enc)) != ismacryp_rc_ok ) {
fprintf(stderr, "%s: could not get ismacryp selec enc. sid %d\n",
ProgName, ismaCrypSId);
ismacrypEndSession(ismaCrypSId);
return MP4_INVALID_TRACK_ID;
}
if (ismacrypGetKeyIndicatorLength(ismaCrypSId, &(icPp->key_ind_len)) != ismacryp_rc_ok) {
fprintf(stderr, "%s: could not get ismacryp key ind len. sid %d\n",
ProgName, ismaCrypSId);
ismacrypEndSession(ismaCrypSId);
return MP4_INVALID_TRACK_ID;
}
if (ismacrypGetIVLength(ismaCrypSId, &(icPp->iv_len)) != ismacryp_rc_ok) {
fprintf(stderr, "%s: could not get ismacryp iv len. sid %d\n",
ProgName, ismaCrypSId);
ismacrypEndSession(ismaCrypSId);
return MP4_INVALID_TRACK_ID;
}
id = MP4AddEncAudioTrack(mp4file,
90000,
duration,
icPp,
audioType);
} else {
id = MP4AddAudioTrack(mp4file,
90000,
duration,
audioType);
}
if (id == MP4_INVALID_TRACK_ID) {
fprintf(stderr,
"%s: can't create audio track from stream %d\n",
ProgName, astream);
return MP4_INVALID_TRACK_ID;
}
if (MP4GetNumberOfTracks(mp4file, MP4_AUDIO_TRACK_TYPE) == 1) {
MP4SetAudioProfileLevel(mp4file, 0xFE);
}
do {
// encrypt if needed
if (doEncrypt) {
u_int8_t* encSampleData = NULL;
u_int32_t encSampleLen = 0;
if (ismacrypEncryptSampleAddHeader(ismaCrypSId, blen, buf,
&encSampleLen, &encSampleData) != 0) {
fprintf(stderr,
"%s: can't encrypt audio sample and add header %u\n", ProgName, id);
}
// now write the sample
if (!MP4WriteSample(mp4file, id, encSampleData, encSampleLen)) {
fprintf(stderr, "%s: can't write audio track %u, stream %d",
ProgName, frame_num, astream);
MP4DeleteTrack(mp4file, id);
return MP4_INVALID_TRACK_ID;
}
if (encSampleData != NULL) {
free(encSampleData);
}
}
// now write the sample
if (!MP4WriteSample(mp4file, id, buf, blen)) {
fprintf(stderr, "%s: can't write audio track %u, stream %d",
ProgName, frame_num, astream);
MP4DeleteTrack(mp4file, id);
return MP4_INVALID_TRACK_ID;
}
frame_num++;
#if 0
if ((frame_num % 100) == 0) printf("Audio frame %d\n", frame_num);
#endif
} while (mpeg2ps_get_audio_frame(file,
astream,
&buf,
&blen,
TS_90000,
NULL, NULL));
// if encrypting, terminate the ismacryp session
if (doEncrypt) {
if (ismacrypEndSession(ismaCrypSId) != 0) {
fprintf(stderr,
"%s: could not end the ISMAcryp session\n",
ProgName);
return MP4_INVALID_TRACK_ID;
}
}
return id;
}
