Ejemplos de getNextNALUnit en C++ (Cpp)

Ejemplo n.º 1

Archivo: avc_utils.cpp Proyecto: whr4935/Media

bool IsAVCReferenceFrame(const sp<ABuffer> &accessUnit) {
    const uint8_t *data = accessUnit->data();
    size_t size = accessUnit->size();
    if (data == NULL) {
        ALOGE("IsAVCReferenceFrame: called on NULL data (%p, %zu)", accessUnit.get(), size);
        return false;
    }

    const uint8_t *nalStart;
    size_t nalSize;
    while (getNextNALUnit(&data, &size, &nalStart, &nalSize, true) == OK) {
        if (nalSize == 0) {
            ALOGE("IsAVCReferenceFrame: invalid nalSize: 0 (%p, %zu)", accessUnit.get(), size);
            return false;
        }

        unsigned nalType = nalStart[0] & 0x1f;

        if (nalType == 5) {
            return true;
        } else if (nalType == 1) {
            unsigned nal_ref_idc = (nalStart[0] >> 5) & 3;
            return nal_ref_idc != 0;
        }
    }

Ejemplo n.º 2

Archivo: avc_utils.cpp Proyecto: whr4935/Media

static sp<ABuffer> FindNAL(const uint8_t *data, size_t size, unsigned nalType) {
    const uint8_t *nalStart;
    size_t nalSize;
    while (getNextNALUnit(&data, &size, &nalStart, &nalSize, true) == OK) {
        if (nalSize > 0 && (nalStart[0] & 0x1f) == nalType) {
            sp<ABuffer> buffer = new ABuffer(nalSize);
            memcpy(buffer->data(), nalStart, nalSize);
            return buffer;
        }
    }

    return NULL;
}

Ejemplo n.º 3

Archivo: avc_utils.cpp Proyecto: drod2169/platform_frameworks_base

bool IsAVCReferenceFrame(const sp<ABuffer> &accessUnit) {
    const uint8_t *data = accessUnit->data();
    size_t size = accessUnit->size();

    const uint8_t *nalStart;
    size_t nalSize;
    while (getNextNALUnit(&data, &size, &nalStart, &nalSize, true) == OK) {
        CHECK_GT(nalSize, 0u);

        unsigned nalType = nalStart[0] & 0x1f;

        if (nalType == 5) {
            return true;
        } else if (nalType == 1) {
            unsigned nal_ref_idc = (nalStart[0] >> 5) & 3;
            return nal_ref_idc != 0;
        }
    }

Ejemplo n.º 4

Archivo: avc_utils.cpp Proyecto: drod2169/platform_frameworks_base

bool IsIDR(const sp<ABuffer> &buffer) {
    const uint8_t *data = buffer->data();
    size_t size = buffer->size();

    bool foundIDR = false;

    const uint8_t *nalStart;
    size_t nalSize;
    while (getNextNALUnit(&data, &size, &nalStart, &nalSize, true) == OK) {
        CHECK_GT(nalSize, 0u);

        unsigned nalType = nalStart[0] & 0x1f;

        if (nalType == 5) {
            foundIDR = true;
            break;
        }
    }

    return foundIDR;
}

Ejemplo n.º 5

Archivo: avc_utils.cpp Proyecto: whr4935/Media

bool IsIDR(const uint8_t *data, size_t size) {
//    const uint8_t *data = buffer->data();
//    size_t size = buffer->size();
    bool foundIDR = false;

    const uint8_t *nalStart;
    size_t nalSize;
    while (getNextNALUnit(&data, &size, &nalStart, &nalSize, true) == OK) {
        if (nalSize == 0u) {
            ALOGW("skipping empty nal unit from potentially malformed bitstream");
            continue;
        }

        unsigned nalType = nalStart[0] & 0x1f;

        if (nalType == 5) {
            foundIDR = true;
            break;
        }
    }

    return foundIDR;
}