Esempio n. 1
0
void MP4File::CreateIsmaODUpdateCommandFromFileForFile(
    MP4TrackId odTrackId,
    MP4TrackId audioTrackId,
    MP4TrackId videoTrackId,
    u_int8_t** ppBytes,
    u_int64_t* pNumBytes)
{
    MP4Descriptor* pCommand = CreateODCommand(MP4ODUpdateODCommandTag);
    pCommand->Generate();

    for (u_int8_t i = 0; i < 2; i++) {
        MP4TrackId trackId;
        u_int16_t odId;

        if (i == 0) {
            trackId = audioTrackId;
            odId = 10;
        } else {
            trackId = videoTrackId;
            odId = 20;
        }

        if (trackId == MP4_INVALID_TRACK_ID) {
            continue;
        }

        MP4DescriptorProperty* pOdDescrProperty =
            (MP4DescriptorProperty*)(pCommand->GetProperty(0));

        pOdDescrProperty->SetTags(MP4FileODescrTag);

        MP4Descriptor* pOd =
            pOdDescrProperty->AddDescriptor(MP4FileODescrTag);

        pOd->Generate();

        MP4BitfieldProperty* pOdIdProperty = NULL;
        pOd->FindProperty("objectDescriptorId",
                          (MP4Property**)&pOdIdProperty);
        pOdIdProperty->SetValue(odId);

        MP4DescriptorProperty* pEsIdsDescriptorProperty = NULL;
        pOd->FindProperty("esIds",
                          (MP4Property**)&pEsIdsDescriptorProperty);
        ASSERT(pEsIdsDescriptorProperty);

        pEsIdsDescriptorProperty->SetTags(MP4ESIDRefDescrTag);

        MP4Descriptor *pRefDescriptor =
            pEsIdsDescriptorProperty->AddDescriptor(MP4ESIDRefDescrTag);
        pRefDescriptor->Generate();

        MP4Integer16Property* pRefIndexProperty = NULL;
        pRefDescriptor->FindProperty("refIndex",
                                     (MP4Property**)&pRefIndexProperty);
        ASSERT(pRefIndexProperty);

        u_int32_t mpodIndex = FindTrackReference(
                                  MakeTrackName(odTrackId, "tref.mpod"), trackId);
        ASSERT(mpodIndex != 0);

        pRefIndexProperty->SetValue(mpodIndex);
    }

    pCommand->WriteToMemory(this, ppBytes, pNumBytes);

    delete pCommand;
}
Esempio n. 2
0
void MP4File::CreateIsmaODUpdateCommandForStream(
    MP4DescriptorProperty* pAudioEsdProperty,
    MP4DescriptorProperty* pVideoEsdProperty,
    u_int8_t** ppBytes,
    u_int64_t* pNumBytes)
{
    MP4Descriptor* pAudioOd = NULL;
    MP4Descriptor* pVideoOd = NULL;

    MP4Descriptor* pCommand =
        CreateODCommand(MP4ODUpdateODCommandTag);
    pCommand->Generate();

    for (u_int8_t i = 0; i < 2; i++) {
        u_int16_t odId;
        MP4DescriptorProperty* pEsdProperty = NULL;

        if (i == 0) {
            odId = 10;
            pEsdProperty = pAudioEsdProperty;
        } else {
            odId = 20;
            pEsdProperty = pVideoEsdProperty;
        }

        if (pEsdProperty == NULL) {
            continue;
        }

        MP4DescriptorProperty* pOdDescrProperty =
            (MP4DescriptorProperty*)(pCommand->GetProperty(0));

        pOdDescrProperty->SetTags(MP4ODescrTag);

        MP4Descriptor* pOd =
            pOdDescrProperty->AddDescriptor(MP4ODescrTag);
        pOd->Generate();

        if (i == 0) {
            pAudioOd = pOd;
        } else {
            pVideoOd = pOd;
        }

        MP4BitfieldProperty* pOdIdProperty = NULL;
        pOd->FindProperty("objectDescriptorId",
                          (MP4Property**)&pOdIdProperty);
        pOdIdProperty->SetValue(odId);

        delete (MP4DescriptorProperty*)pOd->GetProperty(4);
        pOd->SetProperty(4, pEsdProperty);
    }

    // serialize OD command
    pCommand->WriteToMemory(this, ppBytes, pNumBytes);

    // detach from esd descriptor params
    if (pAudioOd) {
        pAudioOd->SetProperty(4, NULL);
    }
    if (pVideoOd) {
        pVideoOd->SetProperty(4, NULL);
    }

    // then destroy
    delete pCommand;
}
Esempio n. 3
0
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));
}