int videoCapturerSetFormat()

in source/V4L2/V4L2VideoCapturer.c [103:159]

• 49 lines of code
• 8 McCabe index (conditional complexity)

int videoCapturerSetFormat(VideoCapturerHandle handle, const VideoFormat format, const VideoResolution resolution)
{
    V4L2_HANDLE_NULL_CHECK(handle);
    V4L2_HANDLE_GET(handle);

    V4L2_HANDLE_STATUS_CHECK(v4l2Handle, VID_CAP_STATUS_STREAM_OFF);

    uint32_t width, height = 0;
    switch (resolution) {
        case VID_RES_1080P:
            width = 1920;
            height = 1080;
            break;
        case VID_RES_720P:
            width = 1080;
            height = 720;
            break;
        case VID_RES_480P:
            width = 720;
            height = 480;
            break;
        case VID_RES_360P:
            width = 480;
            height = 360;
            break;
        case VID_RES_320P:
            width = 416;
            height = 320;
            break;

        default:
            LOG("Unsupported resolution %d", resolution);
            return -EINVAL;
    }

    V4l2CapturerFormat privFormat = V4L2_CAP_FMT_H264;
    switch (format) {
        case VID_FMT_H264:
            privFormat = V4L2_CAP_FMT_H264;
            break;

        default:
            LOG("Unsupported format %d", format);
            return -EINVAL;
            break;
    }

    if (v4l2CapturerConfig(v4l2Handle->privHandle, width, height, privFormat, V4L2_TARGET_BITRATE)) {
        LOG("Failed to config V4L2 Capturer");
        return -EAGAIN;
    }

    v4l2Handle->format = format;
    v4l2Handle->resolution = resolution;

    return 0;
}