mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-12 19:18:44 +02:00
141 lines
4.7 KiB
C
141 lines
4.7 KiB
C
/*
|
|
* Mpeg video formats-related defines and utility functions
|
|
*
|
|
* This file is part of Libav.
|
|
*
|
|
* Libav 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.
|
|
*
|
|
* Libav 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 Libav; 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"
|
|
#include "version.h"
|
|
|
|
/**
|
|
* Return value for header parsers if frame is not coded.
|
|
* */
|
|
#define FRAME_SKIPPED 100
|
|
|
|
/* picture type */
|
|
#define PICT_TOP_FIELD 1
|
|
#define PICT_BOTTOM_FIELD 2
|
|
#define PICT_FRAME 3
|
|
|
|
/**
|
|
* Value of Picture.reference when Picture is not a reference picture, but
|
|
* is held for delayed output.
|
|
*/
|
|
#define DELAYED_PIC_REF 4
|
|
|
|
#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_ACPRED (1 << 9)
|
|
#define MB_TYPE_GMC (1 << 10)
|
|
#define MB_TYPE_SKIP (1 << 11)
|
|
#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_QUANT (1 << 16)
|
|
#define MB_TYPE_CBP (1 << 17)
|
|
|
|
#define MB_TYPE_INTRA MB_TYPE_INTRA4x4 // default mb_type if there is just one type
|
|
|
|
#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)
|
|
|
|
/* MB types for encoding */
|
|
#define CANDIDATE_MB_TYPE_INTRA (1 << 0)
|
|
#define CANDIDATE_MB_TYPE_INTER (1 << 1)
|
|
#define CANDIDATE_MB_TYPE_INTER4V (1 << 2)
|
|
#define CANDIDATE_MB_TYPE_SKIPPED (1 << 3)
|
|
|
|
#define CANDIDATE_MB_TYPE_DIRECT (1 << 4)
|
|
#define CANDIDATE_MB_TYPE_FORWARD (1 << 5)
|
|
#define CANDIDATE_MB_TYPE_BACKWARD (1 << 6)
|
|
#define CANDIDATE_MB_TYPE_BIDIR (1 << 7)
|
|
|
|
#define CANDIDATE_MB_TYPE_INTER_I (1 << 8)
|
|
#define CANDIDATE_MB_TYPE_FORWARD_I (1 << 9)
|
|
#define CANDIDATE_MB_TYPE_BACKWARD_I (1 << 10)
|
|
#define CANDIDATE_MB_TYPE_BIDIR_I (1 << 11)
|
|
|
|
#define CANDIDATE_MB_TYPE_DIRECT0 (1 << 12)
|
|
|
|
#define INPLACE_OFFSET 16
|
|
|
|
enum OutputFormat {
|
|
FMT_MPEG1,
|
|
FMT_H261,
|
|
FMT_H263,
|
|
FMT_MJPEG,
|
|
};
|
|
|
|
|
|
/**
|
|
* 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, AVFrame *cur, AVFrame *last,
|
|
int y, int h, int picture_structure, int first_field,
|
|
int low_delay);
|
|
|
|
#endif /* AVCODEC_MPEGUTILS_H */
|