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/*
* Mpeg video formats-related defines and utility functions
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVCODEC_MPEGUTILS_H
#define AVCODEC_MPEGUTILS_H
#include <stdint.h>
#include "libavutil/frame.h"
#include "avcodec.h"
/* picture type */
#define PICT_TOP_FIELD 1
#define PICT_BOTTOM_FIELD 2
#define PICT_FRAME 3
#define MAX_MB_BYTES (30 * 16 * 16 * 3 / 8 + 120)
#define MAX_FCODE 7
/* MB types */
#define MB_TYPE_INTRA4x4 (1 << 0)
#define MB_TYPE_INTRA16x16 (1 << 1) // FIXME H.264-specific
#define MB_TYPE_INTRA_PCM (1 << 2) // FIXME H.264-specific
#define MB_TYPE_16x16 (1 << 3)
#define MB_TYPE_16x8 (1 << 4)
#define MB_TYPE_8x16 (1 << 5)
#define MB_TYPE_8x8 (1 << 6)
#define MB_TYPE_INTERLACED (1 << 7)
#define MB_TYPE_DIRECT2 (1 << 8) // FIXME
#define MB_TYPE_CBP (1 << 10)
#define MB_TYPE_QUANT (1 << 11)
#define MB_TYPE_FORWARD_MV (1 << 12)
#define MB_TYPE_BACKWARD_MV (1 << 13)
#define MB_TYPE_BIDIR_MV (MB_TYPE_FORWARD_MV | MB_TYPE_BACKWARD_MV)
// MB_TYPE_P[01]L[01], MB_TYPE_L[01] and MB_TYPE_L0L1 are H.264 only.
#define MB_TYPE_P0L0 (1 << 12)
#define MB_TYPE_P1L0 (1 << 13)
#define MB_TYPE_P0L1 (1 << 14)
#define MB_TYPE_P1L1 (1 << 15)
#define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
#define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
#define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
#define MB_TYPE_GMC (1 << 16)
#define MB_TYPE_SKIP (1 << 17)
#define MB_TYPE_ACPRED (1 << 18)
#define MB_TYPE_INTRA MB_TYPE_INTRA4x4 // default mb_type if there is just one type
// The following MB-type can be used by each codec as it sees fit.
#define MB_TYPE_CODEC_SPECIFIC (1 << 9)
#define IS_INTRA4x4(a) ((a) & MB_TYPE_INTRA4x4)
#define IS_INTRA16x16(a) ((a) & MB_TYPE_INTRA16x16)
#define IS_PCM(a) ((a) & MB_TYPE_INTRA_PCM)
#define IS_INTRA(a) ((a) & 7)
#define IS_INTER(a) ((a) & (MB_TYPE_16x16 | MB_TYPE_16x8 | \
MB_TYPE_8x16 | MB_TYPE_8x8))
#define IS_SKIP(a) ((a) & MB_TYPE_SKIP)
#define IS_INTRA_PCM(a) ((a) & MB_TYPE_INTRA_PCM)
#define IS_INTERLACED(a) ((a) & MB_TYPE_INTERLACED)
#define IS_DIRECT(a) ((a) & MB_TYPE_DIRECT2)
#define IS_GMC(a) ((a) & MB_TYPE_GMC)
#define IS_16X16(a) ((a) & MB_TYPE_16x16)
#define IS_16X8(a) ((a) & MB_TYPE_16x8)
#define IS_8X16(a) ((a) & MB_TYPE_8x16)
#define IS_8X8(a) ((a) & MB_TYPE_8x8)
#define IS_SUB_8X8(a) ((a) & MB_TYPE_16x16) // note reused
#define IS_SUB_8X4(a) ((a) & MB_TYPE_16x8) // note reused
#define IS_SUB_4X8(a) ((a) & MB_TYPE_8x16) // note reused
#define IS_SUB_4X4(a) ((a) & MB_TYPE_8x8) // note reused
#define IS_ACPRED(a) ((a) & MB_TYPE_ACPRED)
#define IS_QUANT(a) ((a) & MB_TYPE_QUANT)
#define IS_DIR(a, part, list) ((a) & (MB_TYPE_P0L0 << ((part) + 2 * (list))))
// does this mb use listX, note does not work if subMBs
#define USES_LIST(a, list) ((a) & ((MB_TYPE_P0L0 | MB_TYPE_P1L0) << (2 * (list))))
#define HAS_CBP(a) ((a) & MB_TYPE_CBP)
#define HAS_FORWARD_MV(a) ((a) & MB_TYPE_FORWARD_MV)
#define HAS_BACKWARD_MV(a) ((a) & MB_TYPE_BACKWARD_MV)
// dir == 0 means forward, dir == 1 is backward
#define HAS_MV(a, dir) ((a) & (MB_TYPE_FORWARD_MV << (dir)))
#define MB_TYPE_MV_2_MV_DIR(a) (((a) >> 12) & (MV_DIR_FORWARD | MV_DIR_BACKWARD))
/**
* Draw a horizontal band if supported.
*
* @param h is the normal height, this will be reduced automatically if needed
*/
void ff_draw_horiz_band(AVCodecContext *avctx, const AVFrame *cur, const AVFrame *last,
int y, int h, int picture_structure, int first_field,
int low_delay);
/**
* Print debugging info for the given picture.
*/
void ff_print_debug_info2(AVCodecContext *avctx, AVFrame *pict,
const uint8_t *mbskip_table, 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);
#endif /* AVCODEC_MPEGUTILS_H */
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