C++ (Cpp) skipDescriptorHeader Examples

Example #1

File: ESDS.cpp Project: AOSP-JF/platform_frameworks_av

status_t ESDS::parseDecoderConfigDescriptor(size_t offset, size_t size) {
    if (size < 13) {
        return ERROR_MALFORMED;
    }

    mObjectTypeIndication = mData[offset];

    offset += 13;
    size -= 13;

    if (size == 0) {
        mDecoderSpecificOffset = 0;
        mDecoderSpecificLength = 0;
        return OK;
    }

    uint8_t tag;
    size_t sub_offset, sub_size;
    status_t err = skipDescriptorHeader(
            offset, size, &tag, &sub_offset, &sub_size);

    if (err != OK) {
        return err;
    }

    if (tag != kTag_DecoderSpecificInfo) {
        return ERROR_MALFORMED;
    }

    mDecoderSpecificOffset = sub_offset;
    mDecoderSpecificLength = sub_size;

    return OK;
}

Example #2

File: ESDS.cpp Project: RealVNC/AndroidFrameworksBase

status_t ESDS::parseESDescriptor(size_t offset, size_t size) {
    if (size < 3) {
        return ERROR_MALFORMED;
    }

    offset += 2;  // skip ES_ID
    size -= 2;

    unsigned streamDependenceFlag = mData[offset] & 0x80;
    unsigned URL_Flag = mData[offset] & 0x40;
    unsigned OCRstreamFlag = mData[offset] & 0x20;

    ++offset;
    --size;

    if (streamDependenceFlag) {
        offset += 2;
        size -= 2;
    }

    if (URL_Flag) {
        if (offset >= size) {
            return ERROR_MALFORMED;
        }
        unsigned URLlength = mData[offset];
        offset += URLlength + 1;
        size -= URLlength + 1;
    }

    if (OCRstreamFlag) {
        offset += 2;
        size -= 2;
    }
    
    if (offset >= size) {
        return ERROR_MALFORMED;
    }

    uint8_t tag;
    size_t sub_offset, sub_size;
    status_t err = skipDescriptorHeader(
            offset, size, &tag, &sub_offset, &sub_size);

    if (err != OK) {
        return err;
    }

    if (tag != kTag_DecoderConfigDescriptor) {
        return ERROR_MALFORMED;
    }

    err = parseDecoderConfigDescriptor(sub_offset, sub_size);

    return err;
}

Example #3

File: ESDS.cpp Project: EricCheung3/Android-HLS-lib

status_t ESDS::parseESDescriptor(size_t offset, size_t size) {
    if (size < 3) {
        return ERROR_MALFORMED;
    }
    offset += 2;  // skip ES_ID
    size -= 2;
    unsigned streamDependenceFlag = mData[offset] & 0x80;
    unsigned URL_Flag = mData[offset] & 0x40;
    unsigned OCRstreamFlag = mData[offset] & 0x20;
    ++offset;
    --size;
    if (streamDependenceFlag) {
        offset += 2;
        size -= 2;
    }
    if (URL_Flag) {
        if (offset >= size) {
            return ERROR_MALFORMED;
        }
        unsigned URLlength = mData[offset];
        offset += URLlength + 1;
        size -= URLlength + 1;
    }
    if (OCRstreamFlag) {
        offset += 2;
        size -= 2;
        if ((offset >= size || mData[offset] != kTag_DecoderConfigDescriptor)
                && offset - 2 < size
                && mData[offset - 2] == kTag_DecoderConfigDescriptor) {
            // Content found "in the wild" had OCRstreamFlag set but was
            // missing OCR_ES_Id, the decoder config descriptor immediately
            // followed instead.
            offset -= 2;
            size += 2;
            LOGW("Found malformed 'esds' atom, ignoring missing OCR_ES_Id.");
        }
    }
    if (offset >= size) {
        return ERROR_MALFORMED;
    }
    uint8_t tag;
    size_t sub_offset, sub_size;
    status_t err = skipDescriptorHeader(
            offset, size, &tag, &sub_offset, &sub_size);
    if (err != OK) {
        return err;
    }
    if (tag != kTag_DecoderConfigDescriptor) {
        return ERROR_MALFORMED;
    }
    err = parseDecoderConfigDescriptor(sub_offset, sub_size);
    return err;
}

Example #4

File: ESDS.cpp Project: EricCheung3/Android-HLS-lib

status_t ESDS::parse() {
    uint8_t tag;
    size_t data_offset;
    size_t data_size;
    status_t err =
        skipDescriptorHeader(0, mSize, &tag, &data_offset, &data_size);
    if (err != OK) {
        return err;
    }
    if (tag != kTag_ESDescriptor) {
        return ERROR_MALFORMED;
    }
    return parseESDescriptor(data_offset, data_size);
}

Example #5

status_t ESDS::parseDecoderConfigDescriptor(size_t offset, size_t size) {
    if (size < 13) {
        return ERROR_MALFORMED;
    }

    mObjectTypeIndication = mData[offset];

    offset += 13;
    size -= 13;

    if (size == 0) {
        mDecoderSpecificOffset = 0;
        mDecoderSpecificLength = 0;
        return OK;
    }

    uint8_t tag;
    size_t sub_offset, sub_size;
    status_t err = skipDescriptorHeader(
            offset, size, &tag, &sub_offset, &sub_size);

    if (err != OK) {
        return err;
    }

    if (tag != kTag_DecoderSpecificInfo) {
#ifdef MTK_AOSP_ENHANCEMENT
		ALOGW("No Decoder Specific Info(0x05) in esds");
		if (mObjectTypeIndication != 0x6B && mObjectTypeIndication != 0x69)
		    return ERROR_UNSUPPORTED;
#else
        return ERROR_MALFORMED;
#endif
    }

    mDecoderSpecificOffset = sub_offset;
    mDecoderSpecificLength = sub_size;

    return OK;
}