int CMp4File::create_media (CPlayerSession *psptr,
int have_audio_driver,
control_callback_vft_t *cc_vft)
{
uint video_count, video_offset;
uint text_count, text_offset;
uint audio_count, audio_offset;
MP4TrackId trackId;
video_query_t *vq;
audio_query_t *aq;
text_query_t *tq;
uint ix;
codec_plugin_t *plugin;
int ret_value = 0;
uint8_t *foo;
u_int32_t bufsize;
uint32_t verb = MP4GetVerbosity(m_mp4file);
MP4SetVerbosity(m_mp4file, verb & ~(MP4_DETAILS_ERROR));
video_count = MP4GetNumberOfTracks(m_mp4file, MP4_VIDEO_TRACK_TYPE);
audio_count = MP4GetNumberOfTracks(m_mp4file, MP4_AUDIO_TRACK_TYPE);
text_count = MP4GetNumberOfTracks(m_mp4file, MP4_CNTL_TRACK_TYPE);
mp4f_message(LOG_DEBUG, "cntl tracks %u", text_count);
MP4SetVerbosity(m_mp4file, verb);
if (video_count == 0 && audio_count == 0 && text_count == 0) {
psptr->set_message("No audio, video or control tracks in file");
return -1;
}
if (video_count > 0) {
vq = (video_query_t *)malloc(sizeof(video_query_t) * video_count);
memset(vq, 0, sizeof(video_query_t) * video_count);
} else {
vq = NULL;
}
if (have_audio_driver && audio_count > 0) {
aq = (audio_query_t *)malloc(sizeof(audio_query_t) * audio_count);
memset(aq, 0, sizeof(audio_query_t) * audio_count);
} else {
aq = NULL;
}
if (text_count > 0) {
tq = (text_query_t *)malloc(sizeof(text_query_t) * text_count);
memset(tq, 0, sizeof(text_query_t) * text_count);
} else {
tq = NULL;
}
for (ix = 0, video_offset = 0; ix < video_count; ix++) {
trackId = MP4FindTrackId(m_mp4file, ix, MP4_VIDEO_TRACK_TYPE);
const char *media_data_name;
media_data_name = MP4GetTrackMediaDataName(m_mp4file, trackId);
// for now, treat mp4v and encv the same
vq[video_offset].track_id = trackId;
vq[video_offset].stream_type = STREAM_TYPE_MP4_FILE;
vq[video_offset].compressor = media_data_name;
if (strcasecmp(media_data_name, "mp4v") == 0 ||
strcasecmp(media_data_name, "encv") == 0) {
uint8_t video_type = MP4GetTrackEsdsObjectTypeId(m_mp4file, trackId);
uint8_t profileID = MP4GetVideoProfileLevel(m_mp4file, trackId);
mp4f_message(LOG_DEBUG, "MP4 - got track %x profile ID %d",
trackId, profileID);
MP4SetVerbosity(m_mp4file, verb & ~(MP4_DETAILS_ERROR));
MP4GetTrackESConfiguration(m_mp4file, trackId, &foo, &bufsize);
MP4SetVerbosity(m_mp4file, verb);
vq[video_offset].type = video_type;
vq[video_offset].profile = profileID;
vq[video_offset].fptr = NULL;
vq[video_offset].config = foo;
vq[video_offset].config_len = bufsize;
} else if (strcasecmp(media_data_name, "avc1") == 0) {
uint8_t profile, level;
uint8_t **seqheader, **pictheader;
uint32_t *pictheadersize, *seqheadersize;
uint32_t ix;
MP4GetTrackH264ProfileLevel(m_mp4file, trackId, &profile, &level);
MP4GetTrackH264SeqPictHeaders(m_mp4file, trackId,
&seqheader, &seqheadersize,
&pictheader, &pictheadersize);
bufsize = 0;
for (ix = 0; seqheadersize[ix] != 0; ix++) {
bufsize += seqheadersize[ix] + 4;
}
for (ix = 0; pictheadersize[ix] != 0; ix++) {
bufsize += pictheadersize[ix] + 4;
}
foo = (uint8_t *)malloc(bufsize + 4);
memset(foo, 0, bufsize + 4);
uint32_t copied = 0;
// headers do not have the byte stream start code stored in the file
for (ix = 0; seqheadersize[ix] != 0; ix++) {
foo[copied] = 0;
foo[copied + 1] = 0;
foo[copied + 2] = 0;
foo[copied + 3] = 1;
copied += 4; // add header
memcpy(foo + copied,
seqheader[ix],
seqheadersize[ix]);
copied += seqheadersize[ix];
free(seqheader[ix]);
}
free(seqheader);
free(seqheadersize);
for (ix = 0; pictheadersize[ix] != 0; ix++) {
foo[copied] = 0;
foo[copied + 1] = 0;
foo[copied + 2] = 0;
foo[copied + 3] = 1;
copied += 4; // add header
memcpy(foo + copied,
pictheader[ix],
pictheadersize[ix]);
copied += pictheadersize[ix];
free(pictheader[ix]);
}
free(pictheader);
free(pictheadersize);
vq[video_offset].type = level;
vq[video_offset].profile = profile;
vq[video_offset].fptr = NULL;
vq[video_offset].config = foo;
vq[video_offset].config_len = bufsize;
} else {
MP4GetTrackVideoMetadata(m_mp4file, trackId, &foo, &bufsize);
vq[video_offset].config = foo;
vq[video_offset].config_len = bufsize;
}
plugin = check_for_video_codec(vq[video_offset].stream_type,
vq[video_offset].compressor,
NULL,
vq[video_offset].type,
vq[video_offset].profile,
vq[video_offset].config,
vq[video_offset].config_len,
&config);
if (plugin == NULL) {
psptr->set_message("Can't find plugin for video %s type %d, profile %d",
vq[video_offset].compressor,
vq[video_offset].type,
vq[video_offset].profile);
m_illegal_video_codec++;
ret_value = 1;
// possibly memleak for foo here
} else {
vq[video_offset].h = MP4GetTrackVideoHeight(m_mp4file, trackId);
vq[video_offset].w = MP4GetTrackVideoWidth(m_mp4file, trackId);
vq[video_offset].frame_rate = MP4GetTrackVideoFrameRate(m_mp4file, trackId);
vq[video_offset].enabled = 0;
vq[video_offset].reference = NULL;
video_offset++;
}
}
audio_offset = 0;
if (have_audio_driver) {
for (ix = 0; ix < audio_count; ix++) {
trackId = MP4FindTrackId(m_mp4file, ix, MP4_AUDIO_TRACK_TYPE);
const char *media_data_name;
media_data_name = MP4GetTrackMediaDataName(m_mp4file, trackId);
aq[audio_offset].track_id = trackId;
aq[audio_offset].stream_type = STREAM_TYPE_MP4_FILE;
aq[audio_offset].compressor = media_data_name;
if (strcasecmp(media_data_name, "mp4a") == 0 ||
strcasecmp(media_data_name, "enca") == 0) {
uint8_t *userdata = NULL;
u_int32_t userdata_size;
aq[audio_offset].type = MP4GetTrackEsdsObjectTypeId(m_mp4file, trackId);
MP4SetVerbosity(m_mp4file, verb & ~(MP4_DETAILS_ERROR));
aq[audio_offset].profile = MP4GetAudioProfileLevel(m_mp4file);
MP4GetTrackESConfiguration(m_mp4file,
trackId,
&userdata,
&userdata_size);
MP4SetVerbosity(m_mp4file, verb);
aq[audio_offset].config = userdata;
aq[audio_offset].config_len = userdata_size;
}
plugin = check_for_audio_codec(aq[audio_offset].stream_type,
aq[audio_offset].compressor,
NULL,
aq[audio_offset].type,
aq[audio_offset].profile,
aq[audio_offset].config,
aq[audio_offset].config_len,
&config);
if (plugin != NULL) {
aq[audio_offset].fptr = NULL;
aq[audio_offset].sampling_freq =
MP4GetTrackTimeScale(m_mp4file, trackId);
MP4SetVerbosity(m_mp4file, verb & ~(MP4_DETAILS_ERROR));
aq[audio_offset].chans = MP4GetTrackAudioChannels(m_mp4file, trackId);
MP4SetVerbosity(m_mp4file, verb);
aq[audio_offset].enabled = 0;
aq[audio_offset].reference = NULL;
audio_offset++;
m_have_audio = true;
} else {
m_illegal_audio_codec++;
ret_value = 1;
}
}
} else {
if (audio_count)
ret_value = 1;
}
text_offset = 0;
for (ix = 0; ix < text_count; ix++) {
trackId = MP4FindTrackId(m_mp4file, ix, MP4_CNTL_TRACK_TYPE);
const char *media_data_name;
media_data_name = MP4GetTrackMediaDataName(m_mp4file, trackId);
tq[text_offset].track_id = trackId;
tq[text_offset].stream_type = STREAM_TYPE_MP4_FILE;
tq[text_offset].compressor = media_data_name;
plugin = check_for_text_codec(tq[text_offset].stream_type,
tq[text_offset].compressor,
NULL,
NULL,
0,
&config);
if (plugin != NULL) {
tq[text_offset].fptr = NULL;
tq[text_offset].enabled = 0;
tq[text_offset].reference = NULL;
text_offset++;
} else {
m_illegal_text_codec++;
ret_value = 1;
}
}
if (video_offset == 0 && audio_offset == 0 && text_offset == 0) {
psptr->set_message("No playable codecs in mp4 file");
return -1;
}
if (cc_vft && cc_vft->media_list_query != NULL) {
(cc_vft->media_list_query)(psptr, video_offset, vq, audio_offset, aq, text_offset, tq);
} else {
if (video_offset > 0) {
vq[0].enabled = 1;
}
if (audio_offset > 0) {
aq[0].enabled = 1;
}
if (text_offset > 0) {
tq[0].enabled = 1;
}
}
int vidret, audret, textret;
uint start_desc = 1;
vidret = create_video(psptr, vq, video_offset, start_desc);
free(vq);
if (vidret < 0) {
free(aq);
free(tq);
return -1;
}
audret = create_audio(psptr, aq, audio_offset, start_desc);
free(aq);
textret = create_text(psptr, tq, text_offset, start_desc);
free(tq);
if (audret < 0 || textret < 0) ret_value = -1;
char *name;
verb = MP4GetVerbosity(m_mp4file);
MP4SetVerbosity(m_mp4file, verb & ~(MP4_DETAILS_ERROR));
if (MP4GetMetadataName(m_mp4file, &name) &&
name != NULL) {
psptr->set_session_desc(0, name);
free(name);
}
MP4SetVerbosity(m_mp4file, verb);
return (ret_value);
}
int CMp4File::create_text(CPlayerSession *psptr,
text_query_t *tq,
uint text_offset,
uint &start_desc)
{
uint ix;
//uint64_t IVLength;
CPlayerMedia *mptr;
codec_plugin_t *plugin;
uint32_t verb = MP4GetVerbosity(m_mp4file);
for (ix = 0; ix < text_offset; ix++) {
if (tq[ix].enabled != 0) {
CMp4TextByteStream *tbyte;
mptr = new CPlayerMedia(psptr, TIMED_TEXT_SYNC);
if (mptr == NULL) {
return (-1);
}
/* check if ismacryp */
#if 0
uint32_t verb = MP4GetVerbosity(m_mp4file);
MP4SetVerbosity(m_mp4file, verb & ~(MP4_DETAILS_ERROR));
if (MP4IsIsmaCrypMediaTrack(m_mp4file, aq[ix].track_id)) {
IVLength = MP4GetTrackIntegerProperty(m_mp4file,
aq[ix].track_id, "mdia.minf.stbl.stsd.enca.sinf.schi.iSFM.IV-length");
abyte = new CMp4EncAudioByteStream(this, aq[ix].track_id, IVLength);
} else {
abyte = new CMp4AudioByteStream(this, aq[ix].track_id);
}
MP4SetVerbosity(m_mp4file, verb);
#else
tbyte = new CMp4TextByteStream(this, tq[ix].track_id);
#endif
int ret;
plugin = check_for_text_codec(tq[ix].stream_type,
tq[ix].compressor,
NULL,
NULL,
0,
&config);
ret = mptr->create_text_plugin(plugin,
STREAM_TYPE_MP4_FILE,
tq[ix].compressor,
NULL, // sdp info
NULL,
0);
if (ret < 0) {
mp4f_message(LOG_ERR, "Couldn't create text from plugin %s",
plugin->c_name);
psptr->set_message("Couldn't start text plugin %s",
plugin->c_name);
delete mptr;
delete tbyte;
return -1;
}
ret = mptr->create_media("text", tbyte);
if (ret != 0) {
return (-1);
}
MP4SetVerbosity(m_mp4file, verb & ~(MP4_DETAILS_ERROR));
char *mp4info = MP4Info(m_mp4file, tq[ix].track_id);
MP4SetVerbosity(m_mp4file, verb);
char *temp = mp4info;
while (*temp != '\0') {
if (isspace(*temp)) *temp = ' ';
if (!isprint(*temp)) *temp = '*';
temp++;
}
psptr->set_session_desc(start_desc, mp4info);
free(mp4info);
start_desc++;
} else {
CHECK_AND_FREE(tq[ix].config);
}
}
return 0;
}
int CMp4File::create_audio(CPlayerSession *psptr,
audio_query_t *aq,
uint audio_offset,
uint &start_desc)
{
uint ix;
uint64_t IVLength;
CPlayerMedia *mptr;
codec_plugin_t *plugin;
for (ix = 0; ix < audio_offset; ix++) {
if (aq[ix].enabled != 0) {
CMp4AudioByteStream *abyte;
mptr = new CPlayerMedia(psptr, AUDIO_SYNC);
if (mptr == NULL) {
return (-1);
}
/* check if ismacryp */
uint32_t verb = MP4GetVerbosity(m_mp4file);
MP4SetVerbosity(m_mp4file, verb & ~(MP4_DETAILS_ERROR));
if (MP4IsIsmaCrypMediaTrack(m_mp4file, aq[ix].track_id)) {
MP4GetTrackIntegerProperty(m_mp4file,
aq[ix].track_id, "mdia.minf.stbl.stsd.enca.sinf.schi.iSFM.IV-length", &IVLength);
abyte = new CMp4EncAudioByteStream(this, aq[ix].track_id, IVLength);
} else {
abyte = new CMp4AudioByteStream(this, aq[ix].track_id);
}
MP4SetVerbosity(m_mp4file, verb);
audio_info_t *ainfo;
ainfo = (audio_info_t *)malloc(sizeof(audio_info_t));
memset(ainfo, 0, sizeof(*ainfo));
ainfo->freq = aq[ix].sampling_freq;
if (aq[ix].chans != -1) {
ainfo->chans = aq[ix].chans;
}
if ((aq[ix].type == MP4_PCM16_LITTLE_ENDIAN_AUDIO_TYPE) ||
(aq[ix].type == MP4_PCM16_BIG_ENDIAN_AUDIO_TYPE)) {
ainfo->bitspersample = 16;
}
int ret;
plugin = check_for_audio_codec(STREAM_TYPE_MP4_FILE,
aq[ix].compressor, // media_data field
NULL,
aq[ix].type,
aq[ix].profile,
aq[ix].config,
aq[ix].config_len,
&config);
ret = mptr->create_audio_plugin(plugin,
STREAM_TYPE_MP4_FILE,
aq[ix].compressor,
aq[ix].type,
aq[ix].profile,
NULL, // sdp info
ainfo, // audio info
aq[ix].config,
aq[ix].config_len);
if (ret < 0) {
mp4f_message(LOG_ERR, "Couldn't create audio from plugin %s",
plugin->c_name);
psptr->set_message("Couldn't start audio plugin %s",
plugin->c_name);
delete mptr;
delete abyte;
return -1;
}
ret = mptr->create_media("audio", abyte);
if (ret != 0) {
return (-1);
}
MP4SetVerbosity(m_mp4file, verb & ~(MP4_DETAILS_ERROR));
char *mp4info = MP4Info(m_mp4file, aq[ix].track_id);
MP4SetVerbosity(m_mp4file, verb);
char *temp = mp4info;
while (*temp != '\0') {
if (isspace(*temp)) *temp = ' ';
if (!isprint(*temp)) *temp = '*';
temp++;
}
psptr->set_session_desc(start_desc, mp4info);
free(mp4info);
start_desc++;
} else {
if (aq[ix].config != NULL) free((void *)aq[ix].config);
}
}
return 0;
}
int CMp4File::create_video(CPlayerSession *psptr,
video_query_t *vq,
uint video_offset,
uint &start_desc)
{
uint ix;
CPlayerMedia *mptr;
codec_plugin_t *plugin;
for (ix = 0; ix < video_offset; ix++) {
if (vq[ix].enabled != 0) {
mptr = new CPlayerMedia(psptr, VIDEO_SYNC);
if (mptr == NULL) {
return (-1);
}
video_info_t *vinfo;
vinfo = (video_info_t *)malloc(sizeof(video_info_t));
vinfo->height = vq[ix].h;
vinfo->width = vq[ix].w;
plugin = check_for_video_codec(vq[ix].stream_type,
vq[ix].compressor,
NULL,
vq[ix].type,
vq[ix].profile,
vq[ix].config,
vq[ix].config_len,
&config);
int ret = mptr->create_video_plugin(plugin,
vq[ix].stream_type,
vq[ix].compressor,
vq[ix].type,
vq[ix].profile,
NULL, // sdp info
vinfo, // video info
vq[ix].config,
vq[ix].config_len);
if (ret < 0) {
mp4f_message(LOG_ERR, "Failed to create plugin data");
psptr->set_message("Failed to start plugin");
delete mptr;
return -1;
}
CMp4VideoByteStream *vbyte;
uint64_t IVLength;
/* check if ismacryp */
uint32_t verb = MP4GetVerbosity(m_mp4file);
MP4SetVerbosity(m_mp4file, verb & ~(MP4_DETAILS_ERROR));
if (strcasecmp(vq[ix].compressor, "avc1") == 0) {
vbyte = new CMp4H264VideoByteStream(this, vq[ix].track_id);
} else if (strcasecmp(vq[ix].compressor, "encv") == 0) {
MP4GetTrackIntegerProperty(m_mp4file,
vq[ix].track_id,
"mdia.minf.stbl.stsd.encv.sinf.schi.iSFM.IV-length",
&IVLength);
vbyte = new CMp4EncVideoByteStream(this, vq[ix].track_id,IVLength);
} else {
vbyte = new CMp4VideoByteStream(this, vq[ix].track_id);
}
MP4SetVerbosity(m_mp4file, verb);
if (vbyte == NULL) {
delete mptr;
return (-1);
}
ret = mptr->create_media("video", vbyte);
if (ret != 0) {
return (-1);
}
MP4SetVerbosity(m_mp4file, verb & ~(MP4_DETAILS_ERROR));
char *mp4info = MP4Info(m_mp4file, vq[ix].track_id);
MP4SetVerbosity(m_mp4file, verb);
char *temp = mp4info;
while (*temp != '\0') {
if (isspace(*temp)) *temp = ' ';
if (!isprint(*temp)) *temp = '*';
temp++;
}
psptr->set_session_desc(start_desc, mp4info);
free(mp4info);
start_desc++;
} else {
if (vq[ix].config != NULL) free((void *)vq[ix].config);
}
}
return 0;
}
int CMp4File::create_video(CPlayerSession *psptr,
video_query_t *vq,
uint video_offset,
uint &start_desc)
{
uint ix;
CPlayerMedia *mptr;
codec_plugin_t *plugin;
const char *file_kms_uri;
const char *inuse_kms_uri;
for (ix = 0; ix < video_offset; ix++) {
if (vq[ix].enabled != 0) {
mptr = new CPlayerMedia(psptr, VIDEO_SYNC);
if (mptr == NULL) {
return (-1);
}
video_info_t *vinfo;
vinfo = (video_info_t *)malloc(sizeof(video_info_t));
vinfo->height = vq[ix].h;
vinfo->width = vq[ix].w;
plugin = check_for_video_codec(vq[ix].stream_type,
vq[ix].compressor,
NULL,
vq[ix].type,
vq[ix].profile,
vq[ix].config,
vq[ix].config_len,
&config);
int ret = mptr->create_video_plugin(plugin,
vq[ix].stream_type,
vq[ix].compressor,
vq[ix].type,
vq[ix].profile,
NULL, // sdp info
vinfo, // video info
vq[ix].config,
vq[ix].config_len);
if (ret < 0) {
mp4f_message(LOG_ERR, "Failed to create plugin data");
psptr->set_message("Failed to start plugin");
delete mptr;
return -1;
}
CMp4VideoByteStream *vbyte = NULL;
uint64_t IVLength;
/* check if clear-text or ismacryp.
* in this context original format is encv
* and compressor specifies which codec
*/
uint32_t verb = MP4GetVerbosity(m_mp4file);
MP4SetVerbosity(m_mp4file, verb & ~(MP4_DETAILS_ERROR));
if (strcasecmp(vq[ix].original_fmt, "avc1") == 0) {
vbyte = new CMp4H264VideoByteStream(this, vq[ix].track_id);
} else if (strcasecmp(vq[ix].original_fmt, "encv") == 0) {
MP4GetTrackIntegerProperty(m_mp4file,
vq[ix].track_id,
"mdia.minf.stbl.stsd.encv.sinf.schi.iSFM.IV-length",
&IVLength);
if (strcasecmp(vq[ix].compressor, "mp4v") == 0) {
vbyte = new CMp4EncVideoByteStream(this, vq[ix].track_id,IVLength);
}
else if (((strcasecmp(vq[ix].compressor, "avc1") == 0)
|| (strcasecmp(vq[ix].compressor, "264b")) == 0)) {
vbyte = new CMp4EncH264VideoByteStream(this, vq[ix].track_id,IVLength);
// check if file kms uri matches in-use kms uri
// advisory only
MP4GetTrackStringProperty(m_mp4file, vq[ix].track_id,
"mdia.minf.stbl.stsd.encv.sinf.schi.iKMS.kms_URI",
&file_kms_uri);
inuse_kms_uri =
((CMp4EncH264VideoByteStream *)vbyte)->get_inuse_kms_uri();
if (file_kms_uri && inuse_kms_uri) {
if (strcmp(file_kms_uri, inuse_kms_uri)) {
mp4f_message(LOG_DEBUG,
"KMS in file (%s) does not match KMS in use (%s)\n",
file_kms_uri, inuse_kms_uri);
}
}
}
} else {
vbyte = new CMp4VideoByteStream(this, vq[ix].track_id);
}
MP4SetVerbosity(m_mp4file, verb);
if (vbyte == NULL) {
delete mptr;
return (-1);
}
ret = mptr->create_media("video", vbyte);
if (ret != 0) {
return (-1);
}
MP4SetVerbosity(m_mp4file, verb & ~(MP4_DETAILS_ERROR));
char *mp4info = MP4Info(m_mp4file, vq[ix].track_id);
MP4SetVerbosity(m_mp4file, verb);
char *temp = mp4info;
while (*temp != '\0') {
if (isspace(*temp)) *temp = ' ';
if (!isprint(*temp)) *temp = '*';
temp++;
}
psptr->set_session_desc(start_desc, mp4info);
free(mp4info);
start_desc++;
} else {
if (vq[ix].config != NULL) free((void *)vq[ix].config);
}
}
return 0;
}
int main (int argc, char *argv[])
{
int len = 0;
char *allargs = NULL, *step;
argc--;
argv++;
while (argc > 0 && strcasestr(*argv, ".mp4") != NULL) {
MP4FileHandle mp4File;
mp4File = MP4Read(*argv, MP4_DETAILS_ERROR);
if (MP4_IS_VALID_FILE_HANDLE(mp4File)) {
MP4TrackId tid;
uint32_t ix = 0;
do {
uint32_t verb = MP4GetVerbosity(mp4File);
MP4SetVerbosity(mp4File, verb & ~(MP4_DETAILS_ERROR));
tid = MP4FindTrackId(mp4File, ix, MP4_VIDEO_TRACK_TYPE);
MP4SetVerbosity(mp4File, verb);
if (MP4_IS_VALID_TRACK_ID(tid)) {
uint8_t type = MP4GetTrackEsdsObjectTypeId(mp4File, tid);
if (type == MP4_MPEG4_VIDEO_TYPE) {
uint8_t *foo;
uint32_t bufsize;
MP4GetTrackESConfiguration(mp4File, tid, &foo, &bufsize);
if (foo != NULL && bufsize != 0) {
printf("%s\n", *argv);
decode(foo, bufsize);
free(foo);
} else {
fprintf(stderr, "%s - track %d - can't find esds\n", *argv, tid);
}
} else {
fprintf(stderr, "%s - track %d is not MPEG4 - type %u\n",
*argv, tid, type);
}
}
ix++;
} while (MP4_IS_VALID_TRACK_ID(tid));
} else {
fprintf(stderr, "%s is not a valid mp4 file\n", *argv);
}
argc--;
argv++;
}
if (argc > 0) {
len = 1;
while (argc > 0) {
len += strlen(*argv);
if (allargs == NULL) {
allargs = (char *)malloc(len);
allargs[0] = '\0';
} else
allargs = (char *)realloc(allargs, len);
strcat(allargs, *argv);
argv++;
argc--;
}
if ((len - 1) & 0x1) {
fprintf(stderr, "odd length VOL\n");
exit(1);
}
len /= 2;
uint8_t *vol = (uint8_t *)malloc(len), *write;
write = vol;
step = allargs;
int ix;
for (ix = 0; ix < len; ix++) {
*write = 0;
*write = tohex(*step) << 4;
step++;
*write |= tohex(*step);
step++;
write++;
}
printf("decoding vol \"%s\"\n", allargs);
decode(vol, len);
}
return(0);
}
