C++ (Cpp) VideoBufferInfo::get_planar_info Exemples

Exemple #1

Fichier : test-cl-image.cpp Projet : milliyang/libxcam

static XCamReturn
read_buf (SmartPtr<DrmBoBuffer> &buf, TestFileHandle &file)
{
    const VideoBufferInfo info = buf->get_video_info ();
    VideoBufferPlanarInfo planar;
    uint8_t *memory = NULL;
    XCamReturn ret = XCAM_RETURN_NO_ERROR;

    memory = buf->map ();
    for (uint32_t index = 0; index < info.components; index++) {
        info.get_planar_info (planar, index);
        uint32_t line_bytes = planar.width * planar.pixel_bytes;

        for (uint32_t i = 0; i < planar.height; i++) {
            if (fread (memory + info.offsets [index] + i * info.strides [index], 1, line_bytes, file.fp) != line_bytes) {
                if (feof (file.fp))
                    ret = XCAM_RETURN_BYPASS;
                else {
                    XCAM_LOG_ERROR ("read file failed, size doesn't match");
                    ret = XCAM_RETURN_ERROR_FILE;
                }
            }
        }
    }
    buf->unmap ();
    return ret;
}

Exemple #2

Fichier : fake_poll_thread.cpp Projet : ximenjx/libxcam

XCamReturn
FakePollThread::read_buf (SmartPtr<DrmBoBuffer> &buf)
{
    uint8_t *dst = buf->map ();
    const VideoBufferInfo info = buf->get_video_info ();
    VideoBufferPlanarInfo planar;
    XCamReturn ret = XCAM_RETURN_NO_ERROR;

    for (uint32_t index = 0; index < info.components; index++) {
        info.get_planar_info(planar, index);
        uint32_t line_bytes = planar.width * planar.pixel_bytes;

        for (uint32_t i = 0; i < planar.height; i++) {
            if (fread (dst + info.offsets [index] + i * info.strides [index], 1, line_bytes, _raw) < line_bytes) {
                if (feof (_raw)) {
                    fseek (_raw, 0, SEEK_SET);
                    ret = XCAM_RETURN_BYPASS;
                } else {
                    XCAM_LOG_ERROR ("poll_buffer_loop failed to read file");
                    ret = XCAM_RETURN_ERROR_FILE;
                }
                goto done;
            }
        }
    }

done:
    buf->unmap ();
    return ret;
}

Exemple #3

Fichier : test-cl-image.cpp Projet : milliyang/libxcam

static XCamReturn
calculate_psnr (SmartPtr<DrmBoBuffer> &psnr_cur, SmartPtr<DrmBoBuffer> &psnr_ref, PsnrType psnr_type, float &psnr)
{
    const VideoBufferInfo info = psnr_cur->get_video_info ();
    VideoBufferPlanarInfo planar;
    uint8_t *cur_mem = NULL, *ref_mem = NULL;
    XCamReturn ret = XCAM_RETURN_NO_ERROR;

    int8_t interval = 1, index = 0;
    if (PSNRY == psnr_type) {
        interval = 1;
        index = 0;
    } else if (PSNRR == psnr_type) {
        interval = 4;
        index = 0;
    } else if (PSNRG == psnr_type) {
        interval = 4;
        index = 1;
    } else if (PSNRB == psnr_type) {
        interval = 4;
        index = 2;
    }

    cur_mem = psnr_cur->map ();
    ref_mem = psnr_ref->map ();
    if (!cur_mem || !ref_mem) {
        XCAM_LOG_ERROR ("calculate_psnr map buffer failed");
        return XCAM_RETURN_ERROR_MEM;
    }

    uint32_t sum = 0, pos = 0;
    info.get_planar_info (planar, 0);
    for (uint32_t i = 0; i < planar.height; i++) {
        for (uint32_t j = 0; j < planar.width / interval; j++) {
            pos = i * planar.width + j * interval + index;
            sum += (cur_mem [pos] - ref_mem [pos]) * (cur_mem [pos] - ref_mem [pos]);
        }
    }
    float mse = (float) sum / (planar.height * planar.width / interval) + 0.000001f;
    psnr = 10 * log10 (255 * 255 / mse);

    psnr_cur->unmap ();
    psnr_ref->unmap ();

    return ret;
}