Function ff_fill_pointer

libavcodec/imgconvert.c:528–630

}

int ff_fill_pointer(AVPicture *picture, uint8_t *ptr, enum PixelFormat pix_fmt,
                    int height)
{
    int size, h2, size2;
    const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];

    size = picture->linesize[0] * height;
    switch(pix_fmt) {
    case PIX_FMT_YUV420P:
    case PIX_FMT_YUV422P:
    case PIX_FMT_YUV444P:
    case PIX_FMT_YUV410P:
    case PIX_FMT_YUV411P:
    case PIX_FMT_YUV440P:
    case PIX_FMT_YUVJ420P:
    case PIX_FMT_YUVJ422P:
    case PIX_FMT_YUVJ444P:
    case PIX_FMT_YUVJ440P:
    case PIX_FMT_YUV420P16LE:
    case PIX_FMT_YUV422P16LE:
    case PIX_FMT_YUV444P16LE:
    case PIX_FMT_YUV420P16BE:
    case PIX_FMT_YUV422P16BE:
    case PIX_FMT_YUV444P16BE:
        h2 = (height + (1 << desc->log2_chroma_h) - 1) >> desc->log2_chroma_h;
        size2 = picture->linesize[1] * h2;
        picture->data[0] = ptr;
        picture->data[1] = picture->data[0] + size;
        picture->data[2] = picture->data[1] + size2;
        picture->data[3] = NULL;
        return size + 2 * size2;
    case PIX_FMT_YUVA420P:
        h2 = (height + (1 << desc->log2_chroma_h) - 1) >> desc->log2_chroma_h;
        size2 = picture->linesize[1] * h2;
        picture->data[0] = ptr;
        picture->data[1] = picture->data[0] + size;
        picture->data[2] = picture->data[1] + size2;
        picture->data[3] = picture->data[1] + size2 + size2;
        return 2 * size + 2 * size2;
    case PIX_FMT_NV12:
    case PIX_FMT_NV21:
        h2 = (height + (1 << desc->log2_chroma_h) - 1) >> desc->log2_chroma_h;
        size2 = picture->linesize[1] * h2;
        picture->data[0] = ptr;
        picture->data[1] = picture->data[0] + size;
        picture->data[2] = NULL;
        picture->data[3] = NULL;
        return size + size2;
    case PIX_FMT_RGB24:
    case PIX_FMT_BGR24:
    case PIX_FMT_ARGB:
    case PIX_FMT_ABGR:
    case PIX_FMT_RGBA:
    case PIX_FMT_BGRA:
    case PIX_FMT_RGB48BE:
    case PIX_FMT_RGB48LE:
    case PIX_FMT_GRAY16BE:
    case PIX_FMT_GRAY16LE: