Function ff_print_debug_info2

libavcodec/mpegutils.c:155–302

}

void ff_print_debug_info2(AVCodecContext *avctx, AVFrame *pict,
                          const uint32_t *mbtype_table,
                          const int8_t *qscale_table, int16_t (*const motion_val[2])[2],
                          int mb_width, int mb_height, int mb_stride, int quarter_sample)
{
    const int is_h264 = avctx->codec_id == AV_CODEC_ID_H264;
    const int mb_type_mv_flags[2] = { is_h264 ? MB_TYPE_L0 : MB_TYPE_FORWARD_MV,
                                      is_h264 ? MB_TYPE_L1 : MB_TYPE_BACKWARD_MV };

    if ((avctx->export_side_data & AV_CODEC_EXPORT_DATA_MVS) && mbtype_table && motion_val[0]) {
        const int shift = 1 + quarter_sample;
        const int scale = 1 << shift;
        const int mv_sample_log2 = is_h264 ? 2 : 1;
        const int mv_stride      = (mb_width << mv_sample_log2) + !is_h264;
        int mb_x, mb_y, mbcount = 0;

        /* size is width * height * 2 * 4 where 2 is for directions and 4 is
         * for the maximum number of MB (4 MB in case of IS_8x8) */
        AVMotionVector *mvs = av_malloc_array(mb_width * mb_height, 2 * 4 * sizeof(AVMotionVector));
        if (!mvs)
            return;

        for (mb_y = 0; mb_y < mb_height; mb_y++) {
            for (mb_x = 0; mb_x < mb_width; mb_x++) {
                int i, direction, mb_type = mbtype_table[mb_x + mb_y * mb_stride];
                for (direction = 0; direction < 2; direction++) {
                    if (!HAS_MV_EXT(mb_type, direction, mb_type_mv_flags))
                        continue;
                    if (IS_8X8(mb_type)) {
                        for (i = 0; i < 4; i++) {
                            int sx = mb_x * 16 + 4 + 8 * (i & 1);
                            int sy = mb_y * 16 + 4 + 8 * (i >> 1);
                            int xy = (mb_x * 2 + (i & 1) +
                                      (mb_y * 2 + (i >> 1)) * mv_stride) << (mv_sample_log2 - 1);
                            int mx = motion_val[direction][xy][0];
                            int my = motion_val[direction][xy][1];
                            mbcount += add_mb(mvs + mbcount, mb_type, sx, sy, mx, my, scale, direction);
                        }
                    } else if (IS_16X8(mb_type)) {
                        for (i = 0; i < 2; i++) {
                            int sx = mb_x * 16 + 8;
                            int sy = mb_y * 16 + 4 + 8 * i;
                            int xy = (mb_x * 2 + (mb_y * 2 + i) * mv_stride) << (mv_sample_log2 - 1);
                            int mx = motion_val[direction][xy][0];
                            int my = motion_val[direction][xy][1];

                            if (IS_INTERLACED(mb_type))
                                my *= 2;

                            mbcount += add_mb(mvs + mbcount, mb_type, sx, sy, mx, my, scale, direction);
                        }
                    } else if (IS_8X16(mb_type)) {
                        for (i = 0; i < 2; i++) {
                            int sx = mb_x * 16 + 4 + 8 * i;
                            int sy = mb_y * 16 + 8;
                            int xy = (mb_x * 2 + i + mb_y * 2 * mv_stride) << (mv_sample_log2 - 1);
                            int mx = motion_val[direction][xy][0];
                            int my = motion_val[direction][xy][1];