static char* PrintCntlInfo(
MP4FileHandle mp4File,
MP4TrackId trackId)
{
const char *media_data_name = MP4GetTrackMediaDataName(mp4File, trackId);
const char *typeName = "Unknown";
if (media_data_name == NULL) {
typeName = "Unknown - no media data name";
} else if (strcasecmp(media_data_name, "href") == 0) {
typeName = "ISMA Href";
} else {
typeName = media_data_name;
}
MP4Duration trackDuration =
MP4GetTrackDuration(mp4File, trackId);
double msDuration =
UINT64_TO_DOUBLE(MP4ConvertFromTrackDuration(mp4File, trackId,
trackDuration, MP4_MSECS_TIME_SCALE));
char *sInfo = (char *)MP4Malloc(256);
snprintf(sInfo, 256,
"%u\tcontrol\t%s, %.3f secs\n",
trackId,
typeName,
msDuration / 1000.0);
return sInfo;
}
void MP4BytesProperty::SetValue(const u_int8_t* pValue, u_int32_t valueSize,
u_int32_t index)
{
if (m_readOnly) {
throw new MP4Error(EACCES, "property is read-only", m_name);
}
if (m_fixedValueSize) {
if (valueSize > m_fixedValueSize) {
throw new MP4Error("value size exceeds fixed value size",
"MP4BytesProperty::SetValue");
}
if (m_values[index] == NULL) {
m_values[index] = (u_int8_t*)MP4Calloc(m_fixedValueSize);
m_valueSizes[index] = m_fixedValueSize;
}
if (pValue) {
memcpy(m_values[index], pValue, valueSize);
}
} else {
MP4Free(m_values[index]);
if (pValue) {
m_values[index] = (u_int8_t*)MP4Malloc(valueSize);
memcpy(m_values[index], pValue, valueSize);
m_valueSizes[index] = valueSize;
} else {
m_values[index] = NULL;
m_valueSizes[index] = 0;
}
}
}
void MP4BytesProperty::Read(MP4File* pFile, u_int32_t index)
{
if (m_implicit) {
return;
}
MP4Free(m_values[index]);
m_values[index] = (u_int8_t*)MP4Malloc(m_valueSizes[index]);
pFile->ReadBytes(m_values[index], m_valueSizes[index]);
}
void MP4File::CreateIsmaSceneCommand(
bool hasAudio,
bool hasVideo,
u_int8_t** ppBytes,
u_int64_t* pNumBytes)
{
// from ISMA 1.0 Tech Spec Appendix E
static u_int8_t bifsAudioOnly[] = {
0xC0, 0x10, 0x12,
0x81, 0x30, 0x2A, 0x05, 0x6D, 0xC0
};
static u_int8_t bifsVideoOnly[] = {
0xC0, 0x10, 0x12,
0x61, 0x04,
0x1F, 0xC0, 0x00, 0x00,
0x1F, 0xC0, 0x00, 0x00,
0x44, 0x28, 0x22, 0x82, 0x9F, 0x80
};
static u_int8_t bifsAudioVideo[] = {
0xC0, 0x10, 0x12,
0x81, 0x30, 0x2A, 0x05, 0x6D, 0x26,
0x10, 0x41, 0xFC, 0x00, 0x00, 0x01, 0xFC, 0x00, 0x00,
0x04, 0x42, 0x82, 0x28, 0x29, 0xF8
};
if (hasAudio && hasVideo) {
*pNumBytes = sizeof(bifsAudioVideo);
*ppBytes = (u_int8_t*)MP4Malloc(*pNumBytes);
memcpy(*ppBytes, bifsAudioVideo, sizeof(bifsAudioVideo));
} else if (hasAudio) {
*pNumBytes = sizeof(bifsAudioOnly);
*ppBytes = (u_int8_t*)MP4Malloc(*pNumBytes);
memcpy(*ppBytes, bifsAudioOnly, sizeof(bifsAudioOnly));
} else if (hasVideo) {
*pNumBytes = sizeof(bifsVideoOnly);
*ppBytes = (u_int8_t*)MP4Malloc(*pNumBytes);
memcpy(*ppBytes, bifsVideoOnly, sizeof(bifsVideoOnly));
} else {
*pNumBytes = 0;
*ppBytes = NULL;
}
}
void MP4SdpAtom::Read()
{
// read sdp string, length is implicit in size of atom
u_int64_t size = GetEnd() - m_pFile->GetPosition();
char* data = (char*)MP4Malloc(size + 1);
ASSERT(data != NULL);
m_pFile->ReadBytes((u_int8_t*)data, size);
data[size] = '\0';
((MP4StringProperty*)m_pProperties[0])->SetValue(data);
MP4Free(data);
}
static char* PrintHintInfo(
MP4FileHandle mp4File,
MP4TrackId trackId)
{
MP4TrackId referenceTrackId =
MP4GetHintTrackReferenceTrackId(mp4File, trackId);
char* payloadName = NULL;
if (!MP4GetHintTrackRtpPayload(mp4File, trackId, &payloadName))
return NULL;
char *sInfo = (char*)MP4Malloc(256);
snprintf(sInfo, 256,
"%u\thint\tPayload %s for track %u\n",
trackId,
payloadName,
referenceTrackId);
free(payloadName);
return sInfo;
}
static char* PrintTrackInfo(
MP4FileHandle mp4File,
MP4TrackId trackId)
{
char* trackInfo = NULL;
const char* trackType =
MP4GetTrackType(mp4File, trackId);
if (trackType == NULL) return NULL;
if (!strcmp(trackType, MP4_AUDIO_TRACK_TYPE)) {
trackInfo = PrintAudioInfo(mp4File, trackId);
} else if (!strcmp(trackType, MP4_VIDEO_TRACK_TYPE)) {
trackInfo = PrintVideoInfo(mp4File, trackId);
} else if (!strcmp(trackType, MP4_HINT_TRACK_TYPE)) {
trackInfo = PrintHintInfo(mp4File, trackId);
} else if (strcmp(trackType, MP4_CNTL_TRACK_TYPE) == 0) {
trackInfo = PrintCntlInfo(mp4File, trackId);
} else {
trackInfo = (char*)MP4Malloc(256);
if (!strcmp(trackType, MP4_OD_TRACK_TYPE)) {
snprintf(trackInfo, 256,
"%u\tod\tObject Descriptors\n",
trackId);
} else if (!strcmp(trackType, MP4_SCENE_TRACK_TYPE)) {
snprintf(trackInfo, 256,
"%u\tscene\tBIFS\n",
trackId);
} else {
snprintf(trackInfo, 256,
"%u\t%s\n",
trackId, trackType);
}
}
return trackInfo;
}
void MP4Track::ReadChunk(MP4ChunkId chunkId,
u_int8_t** ppChunk, u_int32_t* pChunkSize)
{
ASSERT(chunkId);
ASSERT(ppChunk);
ASSERT(pChunkSize);
u_int64_t chunkOffset =
m_pChunkOffsetProperty->GetValue(chunkId - 1);
*pChunkSize = GetChunkSize(chunkId);
*ppChunk = (u_int8_t*)MP4Malloc(*pChunkSize);
VERBOSE_READ_SAMPLE(m_pFile->GetVerbosity(),
printf("ReadChunk: track %u id %u offset 0x"LLX" size %u (0x%x)\n",
m_trackId, chunkId, chunkOffset, *pChunkSize, *pChunkSize));
u_int64_t oldPos = m_pFile->GetPosition(); // only used in mode == 'w'
try {
m_pFile->SetPosition(chunkOffset);
m_pFile->ReadBytes(*ppChunk, *pChunkSize);
}
catch (MP4Error* e) {
// let's not leak memory
MP4Free(*ppChunk);
*ppChunk = NULL;
if (m_pFile->GetMode() == 'w') {
m_pFile->SetPosition(oldPos);
}
throw e;
}
if (m_pFile->GetMode() == 'w') {
m_pFile->SetPosition(oldPos);
}
}
//
// Clone - clone my properties to destination atom
//
// this method simplifies duplicating avcC atom properties from
// source to destination file using a single API rather than
// having to copy each property. This API encapsulates the object
// so the application layer need not concern with each property
// thereby isolating any future changes to atom properties.
//
// ----------------------------------------
// property description
// ----------------------------------------
//
// 0 configurationVersion
// 1 AVCProfileIndication
// 2 profile_compatibility
// 3 AVCLevelIndication
// 4 reserved
// 5 lengthSizeMinusOne
// 6 reserved
// 7 number of SPS
// 8 SPS entries
// 9 number of PPS
// 10 PPS entries
//
//
void MP4HvcCAtom::Clone(MP4HvcCAtom *dstAtom)
{
#if 1 //cwm
MP4Property *dstProperty;
MP4TableProperty *pTable;
uint16_t i16;
uint64_t i32;
uint64_t i64;
uint8_t *tmp;
// source pointer Property I16
MP4Integer16Property *spPI16;
// source pointer Property Bytes
MP4BytesProperty *spPB;
// dest pointer Property I16
MP4Integer16Property *dpPI16;
// dest pointer Property Bytes
MP4BytesProperty *dpPB;
// start with defaults and reserved fields
dstAtom->Generate();
// 0, 4, 6 are now generated from defaults
// leaving 1, 2, 3, 5, 7, 8, 9, 10 to export
dstProperty=dstAtom->GetProperty(1);
((MP4Integer8Property *)dstProperty)->SetValue(
0x12);//((MP4Integer8Property *)m_pProperties[1])->GetValue()
dstProperty=dstAtom->GetProperty(2);
((MP4Integer8Property *)dstProperty)->SetValue(
0x34);//((MP4Integer8Property *)m_pProperties[2])->GetValue()
dstProperty=dstAtom->GetProperty(3);
((MP4Integer8Property *)dstProperty)->SetValue(
((MP4Integer8Property *)m_pProperties[3])->GetValue());
dstProperty=dstAtom->GetProperty(5);
((MP4BitfieldProperty *)dstProperty)->SetValue(
((MP4BitfieldProperty *)m_pProperties[5])->GetValue());
//
// 7 and 8 are related SPS (one set of sequence parameters)
//
// first the count bitfield
//
dstProperty=dstAtom->GetProperty(7);
dstProperty->SetReadOnly(false);
((MP4BitfieldProperty *)dstProperty)->SetValue(
((MP4BitfieldProperty *)m_pProperties[7])->GetValue());
dstProperty->SetReadOnly(true);
// next export SPS Length and NAL bytes */
// first source pointers
pTable = (MP4TableProperty *) m_pProperties[8];
spPI16 = (MP4Integer16Property *)pTable->GetProperty(0);
spPB = (MP4BytesProperty *)pTable->GetProperty(1);
// now dest pointers
dstProperty=dstAtom->GetProperty(8);
pTable = (MP4TableProperty *) dstProperty;
dpPI16 = (MP4Integer16Property *)pTable->GetProperty(0);
dpPB = (MP4BytesProperty *)pTable->GetProperty(1);
// sps length
i16 = spPI16->GetValue();
i64 = i16;
// FIXME - this leaves m_maxNumElements =2
// but src atom m_maxNumElements is 1
dpPI16->InsertValue(i64, 0);
// export byte array
i32 = i16;
// copy bytes to local buffer
tmp = (uint8_t *)MP4Malloc(i32);
ASSERT(tmp != NULL);
spPB->CopyValue(tmp, 0);
// set element count
dpPB->SetCount(1);
// copy bytes
dpPB->SetValue(tmp, i32, 0);
MP4Free((void *)tmp);
//
// 9 and 10 are related PPS (one set of picture parameters)
//
// first the integer8 count
//
dstProperty=dstAtom->GetProperty(9);
dstProperty->SetReadOnly(false);
((MP4Integer8Property *)dstProperty)->SetValue(
((MP4Integer8Property *)m_pProperties[9])->GetValue());
dstProperty->SetReadOnly(true);
// next export PPS Length and NAL bytes */
// first source pointers
pTable = (MP4TableProperty *) m_pProperties[10];
spPI16 = (MP4Integer16Property *)pTable->GetProperty(0);
spPB = (MP4BytesProperty *)pTable->GetProperty(1);
// now dest pointers
dstProperty=dstAtom->GetProperty(10);
pTable = (MP4TableProperty *) dstProperty;
dpPI16 = (MP4Integer16Property *)pTable->GetProperty(0);
dpPB = (MP4BytesProperty *)pTable->GetProperty(1);
#if 1//cwm 500
// pps length
i16 = spPI16->GetValue();
i64 = i16;
dpPI16->InsertValue(i64, 0);
// export byte array
i32 = i16;
// copy bytes to local buffer
tmp = (uint8_t *)MP4Malloc(i32);
ASSERT(tmp != NULL);
spPB->CopyValue(tmp, 0);
// set element count
dpPB->SetCount(1);
// copy bytes
dpPB->SetValue(tmp, i32, 0);
MP4Free((void *)tmp);
#endif //cwm 500
#endif //cwm
}
void MP4RtpHintTrack::ReadPacket(
u_int16_t packetIndex,
u_int8_t** ppBytes,
u_int32_t* pNumBytes,
u_int32_t ssrc,
bool addHeader,
bool addPayload)
{
if (m_pReadHint == NULL) {
throw new MP4Error("no hint has been read",
"MP4ReadRtpPacket");
}
if (!addHeader && !addPayload) {
throw new MP4Error("no data requested",
"MP4ReadRtpPacket");
}
MP4RtpPacket* pPacket =
m_pReadHint->GetPacket(packetIndex);
*pNumBytes = 0;
if (addHeader) {
*pNumBytes += 12;
}
if (addPayload) {
*pNumBytes += pPacket->GetDataSize();
}
// if needed, allocate the packet memory
bool buffer_malloc = false;
if (*ppBytes == NULL) {
*ppBytes = (u_int8_t*)MP4Malloc(*pNumBytes);
buffer_malloc = true;
}
try {
u_int8_t* pDest = *ppBytes;
if (addHeader) {
*pDest++ =
0x80 | (pPacket->GetPBit() << 5) | (pPacket->GetXBit() << 4);
*pDest++ =
(pPacket->GetMBit() << 7) | pPacket->GetPayload();
*((u_int16_t*)pDest) =
htons(m_rtpSequenceStart + pPacket->GetSequenceNumber());
pDest += 2;
*((u_int32_t*)pDest) =
htonl(m_rtpTimestampStart + (u_int32_t)m_readHintTimestamp);
pDest += 4;
*((u_int32_t*)pDest) =
htonl(ssrc);
pDest += 4;
}
if (addPayload) {
pPacket->GetData(pDest);
}
}
catch (MP4Error* e) {
if (buffer_malloc) {
MP4Free(*ppBytes);
*ppBytes = NULL;
}
throw e;
}
VERBOSE_READ_HINT(m_pFile->GetVerbosity(),
printf("ReadPacket: %u ", packetIndex);
MP4HexDump(*ppBytes, *pNumBytes););
static char* PrintAudioInfo(
MP4FileHandle mp4File,
MP4TrackId trackId)
{
static const char* mpeg4AudioNames[] = {
"MPEG-4 AAC main",
"MPEG-4 AAC LC",
"MPEG-4 AAC SSR",
"MPEG-4 AAC LTP",
"MPEG-4 AAC HE",
"MPEG-4 AAC Scalable",
"MPEG-4 TwinVQ",
"MPEG-4 CELP",
"MPEG-4 HVXC",
NULL, NULL,
"MPEG-4 TTSI",
"MPEG-4 Main Synthetic",
"MPEG-4 Wavetable Syn",
"MPEG-4 General MIDI",
"MPEG-4 Algo Syn and Audio FX",
"MPEG-4 ER AAC LC",
NULL,
"MPEG-4 ER AAC LTP",
"MPEG-4 ER AAC Scalable",
"MPEG-4 ER TwinVQ",
"MPEG-4 ER BSAC",
"MPEG-4 ER ACC LD",
"MPEG-4 ER CELP",
"MPEG-4 ER HVXC",
"MPEG-4 ER HILN",
"MPEG-4 ER Parametric",
"MPEG-4 SSC",
"MPEG-4 PS",
"MPEG-4 MPEG Surround",
NULL,
"MPEG-4 Layer-1",
"MPEG-4 Layer-2",
"MPEG-4 Layer-3",
"MPEG-4 DST",
"MPEG-4 Audio Lossless",
"MPEG-4 SLS",
"MPEG-4 SLS non-core",
};
static const u_int8_t mpegAudioTypes[] = {
MP4_MPEG2_AAC_MAIN_AUDIO_TYPE, // 0x66
MP4_MPEG2_AAC_LC_AUDIO_TYPE, // 0x67
MP4_MPEG2_AAC_SSR_AUDIO_TYPE, // 0x68
MP4_MPEG2_AUDIO_TYPE, // 0x69
MP4_MPEG1_AUDIO_TYPE, // 0x6B
// private types
MP4_PCM16_LITTLE_ENDIAN_AUDIO_TYPE,
MP4_VORBIS_AUDIO_TYPE,
MP4_ALAW_AUDIO_TYPE,
MP4_ULAW_AUDIO_TYPE,
MP4_G723_AUDIO_TYPE,
MP4_PCM16_BIG_ENDIAN_AUDIO_TYPE,
};
static const char* mpegAudioNames[] = {
"MPEG-2 AAC Main",
"MPEG-2 AAC LC",
"MPEG-2 AAC SSR",
"MPEG-2 Audio (13818-3)",
"MPEG-1 Audio (11172-3)",
// private types
"PCM16 (little endian)",
"Vorbis",
"G.711 aLaw",
"G.711 uLaw",
"G.723.1",
"PCM16 (big endian)",
};
u_int8_t numMpegAudioTypes =
sizeof(mpegAudioTypes) / sizeof(u_int8_t);
const char* typeName = "Unknown";
bool foundType = false;
u_int8_t type = 0;
const char *media_data_name;
media_data_name = MP4GetTrackMediaDataName(mp4File, trackId);
if (media_data_name == NULL) {
typeName = "Unknown - no media data name";
} else if (strcasecmp(media_data_name, "samr") == 0) {
typeName = "AMR";
foundType = true;
} else if (strcasecmp(media_data_name, "sawb") == 0) {
typeName = "AMR-WB";
foundType = true;
} else if (strcasecmp(media_data_name, "mp4a") == 0) {
type = MP4GetTrackEsdsObjectTypeId(mp4File, trackId);
switch (type) {
case MP4_INVALID_AUDIO_TYPE:
typeName = "AAC from .mov";
foundType = true;
break;
case MP4_MPEG4_AUDIO_TYPE: {
type = MP4GetTrackAudioMpeg4Type(mp4File, trackId);
if (type == MP4_MPEG4_INVALID_AUDIO_TYPE ||
type > NUM_ELEMENTS_IN_ARRAY(mpeg4AudioNames) ||
mpeg4AudioNames[type - 1] == NULL) {
typeName = "MPEG-4 Unknown Profile";
} else {
typeName = mpeg4AudioNames[type - 1];
foundType = true;
}
break;
}
// fall through
default:
for (u_int8_t i = 0; i < numMpegAudioTypes; i++) {
if (type == mpegAudioTypes[i]) {
typeName = mpegAudioNames[i];
foundType = true;
break;
}
}
}
} else {
typeName = media_data_name;
foundType = true;
}
u_int32_t timeScale =
MP4GetTrackTimeScale(mp4File, trackId);
MP4Duration trackDuration =
MP4GetTrackDuration(mp4File, trackId);
double msDuration =
UINT64_TO_DOUBLE(MP4ConvertFromTrackDuration(mp4File, trackId,
trackDuration, MP4_MSECS_TIME_SCALE));
u_int32_t avgBitRate =
MP4GetTrackBitRate(mp4File, trackId);
char *sInfo = (char*)MP4Malloc(256);
// type duration avgBitrate samplingFrequency
if (foundType)
snprintf(sInfo, 256,
"%u\taudio\t%s%s, %.3f secs, %u kbps, %u Hz\n",
trackId,
MP4IsIsmaCrypMediaTrack(mp4File, trackId) ? "enca - " : "",
typeName,
msDuration / 1000.0,
(avgBitRate + 500) / 1000,
timeScale);
else
snprintf(sInfo, 256,
"%u\taudio\t%s%s(%u), %.3f secs, %u kbps, %u Hz\n",
trackId,
MP4IsIsmaCrypMediaTrack(mp4File, trackId) ? "enca - " : "",
typeName,
type,
msDuration / 1000.0,
(avgBitRate + 500) / 1000,
timeScale);
return sInfo;
}
static char* PrintVideoInfo(
MP4FileHandle mp4File,
MP4TrackId trackId)
{
static const u_int8_t mpegVideoTypes[] = {
MP4_MPEG2_SIMPLE_VIDEO_TYPE, // 0x60
MP4_MPEG2_MAIN_VIDEO_TYPE, // 0x61
MP4_MPEG2_SNR_VIDEO_TYPE, // 0x62
MP4_MPEG2_SPATIAL_VIDEO_TYPE, // 0x63
MP4_MPEG2_HIGH_VIDEO_TYPE, // 0x64
MP4_MPEG2_442_VIDEO_TYPE, // 0x65
MP4_MPEG1_VIDEO_TYPE, // 0x6A
MP4_JPEG_VIDEO_TYPE, // 0x6C
MP4_YUV12_VIDEO_TYPE,
MP4_H263_VIDEO_TYPE,
MP4_H261_VIDEO_TYPE,
};
static const char* mpegVideoNames[] = {
"MPEG-2 Simple",
"MPEG-2 Main",
"MPEG-2 SNR",
"MPEG-2 Spatial",
"MPEG-2 High",
"MPEG-2 4:2:2",
"MPEG-1",
"JPEG",
"YUV12",
"H.263",
"H.261",
};
u_int8_t numMpegVideoTypes =
sizeof(mpegVideoTypes) / sizeof(u_int8_t);
bool foundTypeName = false;
const char* typeName = "Unknown";
const char *media_data_name;
char originalFormat[8];
char oformatbuffer[32];
originalFormat[0] = 0;
*oformatbuffer = 0;
uint8_t type = 0;
media_data_name = MP4GetTrackMediaDataName(mp4File, trackId);
// encv 264b
if (strcasecmp(media_data_name, "encv") == 0) {
if (MP4GetTrackMediaDataOriginalFormat(mp4File,
trackId,
originalFormat,
sizeof(originalFormat)) == false)
media_data_name = NULL;
}
char typebuffer[80];
if (media_data_name == NULL) {
typeName = "Unknown - no media data name";
foundTypeName = true;
} else if ((strcasecmp(media_data_name, "avc1") == 0) ||
(strcasecmp(originalFormat, "264b") == 0)) {
// avc
uint8_t profile, level;
char profileb[20], levelb[20];
if (MP4GetTrackH264ProfileLevel(mp4File, trackId,
&profile, &level)) {
if (profile == 66) {
strcpy(profileb, "Baseline");
} else if (profile == 77) {
strcpy(profileb, "Main");
} else if (profile == 88) {
strcpy(profileb, "Extended");
} else if (profile == 100) {
strcpy(profileb, "High");
} else if (profile == 110) {
strcpy(profileb, "High 10");
} else if (profile == 122) {
strcpy(profileb, "High 4:2:2");
} else if (profile == 144) {
strcpy(profileb, "High 4:4:4");
} else {
snprintf(profileb, 20, "Unknown Profile %x", profile);
}
switch (level) {
case 10: case 20: case 30: case 40: case 50:
snprintf(levelb, 20, "%u", level / 10);
break;
case 11: case 12: case 13:
case 21: case 22:
case 31: case 32:
case 41: case 42:
case 51:
snprintf(levelb, 20, "%u.%u", level / 10, level % 10);
break;
default:
snprintf(levelb, 20, "unknown level %x", level);
break;
}
if (originalFormat != NULL && originalFormat[0] != '\0')
snprintf(oformatbuffer, 32, "(%s) ", originalFormat);
snprintf(typebuffer, sizeof(typebuffer), "H264 %s%s@%s",
oformatbuffer, profileb, levelb);
typeName = typebuffer;
} else {
typeName = "H.264 - profile/level error";
}
foundTypeName = true;
} else if (strcasecmp(media_data_name, "s263") == 0) {
// 3gp h.263
typeName = "H.263";
foundTypeName = true;
} else if ((strcasecmp(media_data_name, "mp4v") == 0) ||
(strcasecmp(media_data_name, "encv") == 0)) {
// note encv might needs it's own field eventually.
type = MP4GetTrackEsdsObjectTypeId(mp4File, trackId);
if (type == MP4_MPEG4_VIDEO_TYPE) {
type = MP4GetVideoProfileLevel(mp4File, trackId);
typeName = Mpeg4VisualProfileName(type);
if (typeName == NULL) {
typeName = "MPEG-4 Unknown Profile";
} else {
foundTypeName = true;
}
} else {
for (u_int8_t i = 0; i < numMpegVideoTypes; i++) {
if (type == mpegVideoTypes[i]) {
typeName = mpegVideoNames[i];
foundTypeName = true;
break;
}
}
}
} else {
typeName = media_data_name;
foundTypeName = true; // we don't have a type value to display
}
MP4Duration trackDuration =
MP4GetTrackDuration(mp4File, trackId);
double msDuration =
UINT64_TO_DOUBLE(MP4ConvertFromTrackDuration(mp4File, trackId,
trackDuration, MP4_MSECS_TIME_SCALE));
u_int32_t avgBitRate =
MP4GetTrackBitRate(mp4File, trackId);
// Note not all mp4 implementations set width and height correctly
// The real answer can be buried inside the ES configuration info
u_int16_t width = MP4GetTrackVideoWidth(mp4File, trackId);
u_int16_t height = MP4GetTrackVideoHeight(mp4File, trackId);
double fps = MP4GetTrackVideoFrameRate(mp4File, trackId);
char *sInfo = (char*)MP4Malloc(256);
// type duration avgBitrate frameSize frameRate
if (foundTypeName) {
sprintf(sInfo,
"%u\tvideo\t%s%s, %.3f secs, %u kbps, %ux%u @ %f fps\n",
trackId,
MP4IsIsmaCrypMediaTrack(mp4File, trackId) ? "encv - " : "",
typeName,
msDuration / 1000.0,
(avgBitRate + 500) / 1000,
width,
height,
fps
);
} else {
sprintf(sInfo,
"%u\tvideo\t%s(%u), %.3f secs, %u kbps, %ux%u @ %f fps\n",
trackId,
typeName,
type,
msDuration / 1000.0,
(avgBitRate + 500) / 1000,
width,
height,
fps
);
}
return sInfo;
}
void MP4Track::ReadSample(
MP4SampleId sampleId,
u_int8_t** ppBytes,
u_int32_t* pNumBytes,
MP4Timestamp* pStartTime,
MP4Duration* pDuration,
MP4Duration* pRenderingOffset,
bool* pIsSyncSample)
{
if (sampleId == MP4_INVALID_SAMPLE_ID) {
throw new MP4Error("sample id can't be zero",
"MP4Track::ReadSample");
}
// handle unusual case of wanting to read a sample
// that is still sitting in the write chunk buffer
if (m_pChunkBuffer && sampleId >= m_writeSampleId - m_chunkSamples) {
WriteChunkBuffer();
}
FILE* pFile = GetSampleFile(sampleId);
if (pFile == (FILE*)-1) {
throw new MP4Error("sample is located in an inaccessible file",
"MP4Track::ReadSample");
}
u_int64_t fileOffset = GetSampleFileOffset(sampleId);
u_int32_t sampleSize = GetSampleSize(sampleId);
if (*ppBytes != NULL && *pNumBytes < sampleSize) {
throw new MP4Error("sample buffer is too small",
"MP4Track::ReadSample");
}
*pNumBytes = sampleSize;
VERBOSE_READ_SAMPLE(m_pFile->GetVerbosity(),
printf("ReadSample: track %u id %u offset 0x"LLX" size %u (0x%x)\n",
m_trackId, sampleId, fileOffset, *pNumBytes, *pNumBytes));
bool bufferMalloc = false;
if (*ppBytes == NULL) {
*ppBytes = (u_int8_t*)MP4Malloc(*pNumBytes);
bufferMalloc = true;
}
u_int64_t oldPos = m_pFile->GetPosition(pFile); // only used in mode == 'w'
try {
m_pFile->SetPosition(fileOffset, pFile);
m_pFile->ReadBytes(*ppBytes, *pNumBytes, pFile);
if (pStartTime || pDuration) {
GetSampleTimes(sampleId, pStartTime, pDuration);
VERBOSE_READ_SAMPLE(m_pFile->GetVerbosity(),
printf("ReadSample: start "LLU" duration "LLD"\n",
(pStartTime ? *pStartTime : 0),
(pDuration ? *pDuration : 0)));
}
if (pRenderingOffset) {
*pRenderingOffset = GetSampleRenderingOffset(sampleId);
VERBOSE_READ_SAMPLE(m_pFile->GetVerbosity(),
printf("ReadSample: renderingOffset "LLD"\n",
*pRenderingOffset));
}
if (pIsSyncSample) {
*pIsSyncSample = IsSyncSample(sampleId);
VERBOSE_READ_SAMPLE(m_pFile->GetVerbosity(),
printf("ReadSample: isSyncSample %u\n",
*pIsSyncSample));
}
}
catch (MP4Error* e) {
if (bufferMalloc) {
// let's not leak memory
MP4Free(*ppBytes);
*ppBytes = NULL;
}
if (m_pFile->GetMode() == 'w') {
m_pFile->SetPosition(oldPos, pFile);
}
throw e;
}
if (m_pFile->GetMode() == 'w') {
m_pFile->SetPosition(oldPos, pFile);
}
}
void MP4File::CreateIsmaIodFromParams(
u_int8_t videoProfile,
u_int32_t videoBitrate,
u_int8_t* videoConfig,
u_int32_t videoConfigLength,
u_int8_t audioProfile,
u_int32_t audioBitrate,
u_int8_t* audioConfig,
u_int32_t audioConfigLength,
u_int8_t** ppIodBytes,
u_int64_t* pIodNumBytes)
{
MP4IntegerProperty* pInt;
u_int8_t* pBytes = NULL;
u_int64_t numBytes;
// Create the IOD
MP4Descriptor* pIod = new MP4IODescriptor();
pIod->SetTag(MP4IODescrTag);
pIod->Generate();
// Set audio and video profileLevels
pIod->FindProperty("audioProfileLevelId",
(MP4Property**)&pInt);
pInt->SetValue(audioProfile);
pIod->FindProperty("visualProfileLevelId",
(MP4Property**)&pInt);
pInt->SetValue(videoProfile);
// Mutate esIds from MP4ESIDIncDescrTag to MP4ESDescrTag
MP4DescriptorProperty* pEsProperty;
pIod->FindProperty("esIds", (MP4Property**)&pEsProperty);
pEsProperty->SetTags(MP4ESDescrTag);
// Add ES Descriptors
// Scene
CreateIsmaSceneCommand(
(audioProfile != 0xFF),
(videoProfile != 0xFF),
&pBytes,
&numBytes);
VERBOSE_ISMA(GetVerbosity(),
printf("Scene data =\n"); MP4HexDump(pBytes, numBytes));
char* sceneCmdBase64 = MP4ToBase64(pBytes, numBytes);
char* urlBuf =
(char*)MP4Malloc(strlen(sceneCmdBase64) + 64);
sprintf(urlBuf,
"data:application/mpeg4-bifs-au;base64,%s",
sceneCmdBase64);
VERBOSE_ISMA(GetVerbosity(),
printf("Scene data URL = \042%s\042\n", urlBuf));
/* MP4Descriptor* pSceneEsd = */
CreateESD(
pEsProperty,
201, // esid
MP4SystemsV2ObjectType,
MP4SceneDescriptionStreamType,
numBytes, // bufferSize
numBytes * 8, // bitrate
BifsV2Config,
sizeof(BifsV2Config),
urlBuf);
MP4Free(sceneCmdBase64);
sceneCmdBase64 = NULL;
MP4Free(urlBuf);
urlBuf = NULL;
MP4Free(pBytes);
pBytes = NULL;
// OD
// Video
MP4DescriptorProperty* pVideoEsdProperty =
new MP4DescriptorProperty();
pVideoEsdProperty->SetTags(MP4ESDescrTag);
/* MP4Descriptor* pVideoEsd = */
CreateESD(
pVideoEsdProperty,
20, // esid
MP4_MPEG4_VIDEO_TYPE,
MP4VisualStreamType,
videoBitrate / 8, // bufferSize
videoBitrate,
videoConfig,
videoConfigLength,
NULL);
// Audio
MP4DescriptorProperty* pAudioEsdProperty =
new MP4DescriptorProperty();
pAudioEsdProperty->SetTags(MP4ESDescrTag);
/* MP4Descriptor* pAudioEsd = */
CreateESD(
pAudioEsdProperty,
10, // esid
MP4_MPEG4_AUDIO_TYPE,
MP4AudioStreamType,
audioBitrate / 8, // bufferSize
audioBitrate,
audioConfig,
audioConfigLength,
NULL);
CreateIsmaODUpdateCommandForStream(
pAudioEsdProperty,
pVideoEsdProperty,
&pBytes,
&numBytes);
// cleanup temporary descriptor properties
delete pAudioEsdProperty;
delete pVideoEsdProperty;
VERBOSE_ISMA(GetVerbosity(),
printf("OD data = %llu bytes\n", numBytes); MP4HexDump(pBytes, numBytes));
char* odCmdBase64 = MP4ToBase64(pBytes, numBytes);
urlBuf = (char*)MP4Malloc(strlen(odCmdBase64) + 64);
sprintf(urlBuf,
"data:application/mpeg4-od-au;base64,%s",
odCmdBase64);
VERBOSE_ISMA(GetVerbosity(),
printf("OD data URL = \042%s\042\n", urlBuf));
/* MP4Descriptor* pOdEsd = */
CreateESD(
pEsProperty,
101,
MP4SystemsV1ObjectType,
MP4ObjectDescriptionStreamType,
numBytes, // bufferSize
numBytes * 8, // bitrate
NULL, // config
0, // configLength
urlBuf);
MP4Free(odCmdBase64);
odCmdBase64 = NULL;
MP4Free(pBytes);
pBytes = NULL;
MP4Free(urlBuf);
urlBuf = NULL;
// finally get the whole thing written to a memory
pIod->WriteToMemory(this, ppIodBytes, pIodNumBytes);
delete pIod;
VERBOSE_ISMA(GetVerbosity(),
printf("IOD data =\n"); MP4HexDump(*ppIodBytes, *pIodNumBytes));
}
void MP4File::CreateIsmaIodFromFile(
MP4TrackId odTrackId,
MP4TrackId sceneTrackId,
MP4TrackId audioTrackId,
MP4TrackId videoTrackId,
u_int8_t** ppBytes,
u_int64_t* pNumBytes)
{
MP4Descriptor* pIod = new MP4IODescriptor();
pIod->SetTag(MP4IODescrTag);
pIod->Generate();
MP4Atom* pIodsAtom = FindAtom("moov.iods");
ASSERT(pIodsAtom);
MP4DescriptorProperty* pSrcIod =
(MP4DescriptorProperty*)pIodsAtom->GetProperty(2);
CloneIntegerProperty(pIod, pSrcIod, "objectDescriptorId");
CloneIntegerProperty(pIod, pSrcIod, "ODProfileLevelId");
CloneIntegerProperty(pIod, pSrcIod, "sceneProfileLevelId");
CloneIntegerProperty(pIod, pSrcIod, "audioProfileLevelId");
CloneIntegerProperty(pIod, pSrcIod, "visualProfileLevelId");
CloneIntegerProperty(pIod, pSrcIod, "graphicsProfileLevelId");
// mutate esIds from MP4ESIDIncDescrTag to MP4ESDescrTag
MP4DescriptorProperty* pEsProperty;
pIod->FindProperty("esIds", (MP4Property**)&pEsProperty);
pEsProperty->SetTags(MP4ESDescrTag);
MP4IntegerProperty* pSetProperty;
MP4IntegerProperty* pSceneESID;
MP4IntegerProperty* pOdESID;
// OD
MP4Descriptor* pOdEsd =
pEsProperty->AddDescriptor(MP4ESDescrTag);
pOdEsd->Generate();
pOdEsd->FindProperty("ESID",
(MP4Property**)&pOdESID);
// we set the OD ESID to a non-zero unique value
pOdESID->SetValue(m_odTrackId);
pOdEsd->FindProperty("URLFlag",
(MP4Property**)&pSetProperty);
pSetProperty->SetValue(1);
u_int8_t* pBytes;
u_int64_t numBytes;
CreateIsmaODUpdateCommandFromFileForStream(
audioTrackId,
videoTrackId,
&pBytes,
&numBytes);
VERBOSE_ISMA(GetVerbosity(),
printf("OD data =\n"); MP4HexDump(pBytes, numBytes));
char* odCmdBase64 = MP4ToBase64(pBytes, numBytes);
char* urlBuf = (char*)MP4Malloc(strlen(odCmdBase64) + 64);
sprintf(urlBuf,
"data:application/mpeg4-od-au;base64,%s",
odCmdBase64);
MP4StringProperty* pUrlProperty;
pOdEsd->FindProperty("URL",
(MP4Property**)&pUrlProperty);
pUrlProperty->SetValue(urlBuf);
VERBOSE_ISMA(GetVerbosity(),
printf("OD data URL = \042%s\042\n", urlBuf));
MP4Free(odCmdBase64);
odCmdBase64 = NULL;
MP4Free(pBytes);
pBytes = NULL;
MP4Free(urlBuf);
urlBuf = NULL;
MP4DescriptorProperty* pSrcDcd = NULL;
// HACK temporarily point to scene decoder config
FindProperty(MakeTrackName(odTrackId,
"mdia.minf.stbl.stsd.mp4s.esds.decConfigDescr"),
(MP4Property**)&pSrcDcd);
ASSERT(pSrcDcd);
MP4Property* pOrgOdEsdProperty =
pOdEsd->GetProperty(8);
pOdEsd->SetProperty(8, pSrcDcd);
// bufferSizeDB needs to be set appropriately
MP4BitfieldProperty* pBufferSizeProperty = NULL;
pOdEsd->FindProperty("decConfigDescr.bufferSizeDB",
(MP4Property**)&pBufferSizeProperty);
ASSERT(pBufferSizeProperty);
pBufferSizeProperty->SetValue(numBytes);
// SL config needs to change from 2 (file) to 1 (null)
pOdEsd->FindProperty("slConfigDescr.predefined",
(MP4Property**)&pSetProperty);
pSetProperty->SetValue(1);
// Scene
MP4Descriptor* pSceneEsd =
pEsProperty->AddDescriptor(MP4ESDescrTag);
pSceneEsd->Generate();
pSceneEsd->FindProperty("ESID",
(MP4Property**)&pSceneESID);
// we set the Scene ESID to a non-zero unique value
pSceneESID->SetValue(sceneTrackId);
pSceneEsd->FindProperty("URLFlag",
(MP4Property**)&pSetProperty);
pSetProperty->SetValue(1);
CreateIsmaSceneCommand(
MP4_IS_VALID_TRACK_ID(audioTrackId),
MP4_IS_VALID_TRACK_ID(videoTrackId),
&pBytes,
&numBytes);
VERBOSE_ISMA(GetVerbosity(),
printf("Scene data =\n"); MP4HexDump(pBytes, numBytes));
char *sceneCmdBase64 = MP4ToBase64(pBytes, numBytes);
urlBuf = (char*)MP4Malloc(strlen(sceneCmdBase64) + 64);
sprintf(urlBuf,
"data:application/mpeg4-bifs-au;base64,%s",
sceneCmdBase64);
pSceneEsd->FindProperty("URL",
(MP4Property**)&pUrlProperty);
pUrlProperty->SetValue(urlBuf);
VERBOSE_ISMA(GetVerbosity(),
printf("Scene data URL = \042%s\042\n", urlBuf));
MP4Free(sceneCmdBase64);
sceneCmdBase64 = NULL;
MP4Free(urlBuf);
urlBuf = NULL;
MP4Free(pBytes);
pBytes = NULL;
// HACK temporarily point to scene decoder config
FindProperty(MakeTrackName(sceneTrackId,
"mdia.minf.stbl.stsd.mp4s.esds.decConfigDescr"),
(MP4Property**)&pSrcDcd);
ASSERT(pSrcDcd);
MP4Property* pOrgSceneEsdProperty =
pSceneEsd->GetProperty(8);
pSceneEsd->SetProperty(8, pSrcDcd);
// bufferSizeDB needs to be set
pBufferSizeProperty = NULL;
pSceneEsd->FindProperty("decConfigDescr.bufferSizeDB",
(MP4Property**)&pBufferSizeProperty);
ASSERT(pBufferSizeProperty);
pBufferSizeProperty->SetValue(numBytes);
// SL config needs to change from 2 (file) to 1 (null)
pSceneEsd->FindProperty("slConfigDescr.predefined",
(MP4Property**)&pSetProperty);
pSetProperty->SetValue(1);
// finally get the whole thing written to a memory
pIod->WriteToMemory(this, ppBytes, pNumBytes);
// now carefully replace esd properties before destroying
pOdEsd->SetProperty(8, pOrgOdEsdProperty);
pSceneEsd->SetProperty(8, pOrgSceneEsdProperty);
pSceneESID->SetValue(0); // restore 0 value
pOdESID->SetValue(0);
delete pIod;
VERBOSE_ISMA(GetVerbosity(),
printf("IOD data =\n"); MP4HexDump(*ppBytes, *pNumBytes));
}
