/* * 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 #include "libavutil/frame.h" #include "avcodec.h" #include "avcodec_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 */ #if !FF_API_MB_TYPE #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) #endif #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 */