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Diffstat (limited to 'ffmpeg/libavcodec/mpeg4video.h')
| -rw-r--r-- | ffmpeg/libavcodec/mpeg4video.h | 253 |
1 files changed, 0 insertions, 253 deletions
diff --git a/ffmpeg/libavcodec/mpeg4video.h b/ffmpeg/libavcodec/mpeg4video.h deleted file mode 100644 index 5320b0b..0000000 --- a/ffmpeg/libavcodec/mpeg4video.h +++ /dev/null @@ -1,253 +0,0 @@ -/* - * MPEG4 encoder/decoder internal header. - * Copyright (c) 2000,2001 Fabrice Bellard - * Copyright (c) 2002-2010 Michael Niedermayer <michaelni@gmx.at> - * - * 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_MPEG4VIDEO_H -#define AVCODEC_MPEG4VIDEO_H - -#include <stdint.h> - -#include "get_bits.h" -#include "mpegvideo.h" -#include "rl.h" - -// shapes -#define RECT_SHAPE 0 -#define BIN_SHAPE 1 -#define BIN_ONLY_SHAPE 2 -#define GRAY_SHAPE 3 - -#define SIMPLE_VO_TYPE 1 -#define CORE_VO_TYPE 3 -#define MAIN_VO_TYPE 4 -#define NBIT_VO_TYPE 5 -#define ARTS_VO_TYPE 10 -#define ACE_VO_TYPE 12 -#define ADV_SIMPLE_VO_TYPE 17 - -// aspect_ratio_info -#define EXTENDED_PAR 15 - -//vol_sprite_usage / sprite_enable -#define STATIC_SPRITE 1 -#define GMC_SPRITE 2 - -#define MOTION_MARKER 0x1F001 -#define DC_MARKER 0x6B001 - -#define VOS_STARTCODE 0x1B0 -#define USER_DATA_STARTCODE 0x1B2 -#define GOP_STARTCODE 0x1B3 -#define VISUAL_OBJ_STARTCODE 0x1B5 -#define VOP_STARTCODE 0x1B6 - -typedef struct Mpeg4DecContext { - MpegEncContext m; - - /// number of bits to represent the fractional part of time - int time_increment_bits; - int shape; - int vol_sprite_usage; - int sprite_brightness_change; - int num_sprite_warping_points; - /// sprite trajectory points - uint16_t sprite_traj[4][2]; - /// sprite shift [isChroma] - int sprite_shift[2]; - - // reversible vlc - int rvlc; - /// could this stream contain resync markers - int resync_marker; - /// time distance of first I -> B, used for interlaced b frames - int t_frame; - - int new_pred; - int enhancement_type; - int scalability; - int use_intra_dc_vlc; - - /// QP above whch the ac VLC should be used for intra dc - int intra_dc_threshold; - - /* bug workarounds */ - int divx_version; - int divx_build; - int xvid_build; - int lavc_build; - - /// flag for having shown the warning about divxs invalid b frames - int showed_packed_warning; - - int cplx_estimation_trash_i; - int cplx_estimation_trash_p; - int cplx_estimation_trash_b; -} Mpeg4DecContext; - -/* dc encoding for mpeg4 */ -extern const uint8_t ff_mpeg4_DCtab_lum[13][2]; -extern const uint8_t ff_mpeg4_DCtab_chrom[13][2]; - -extern const uint16_t ff_mpeg4_intra_vlc[103][2]; -extern const int8_t ff_mpeg4_intra_level[102]; -extern const int8_t ff_mpeg4_intra_run[102]; - -extern RLTable ff_mpeg4_rl_intra; - -/* Note this is identical to the intra rvlc except that it is reordered. */ -extern RLTable ff_rvlc_rl_inter; -extern RLTable ff_rvlc_rl_intra; - -extern const uint16_t ff_sprite_trajectory_tab[15][2]; -extern const uint8_t ff_mb_type_b_tab[4][2]; - -/* these matrixes will be permuted for the idct */ -extern const int16_t ff_mpeg4_default_intra_matrix[64]; -extern const int16_t ff_mpeg4_default_non_intra_matrix[64]; - -extern const uint8_t ff_mpeg4_y_dc_scale_table[32]; -extern const uint8_t ff_mpeg4_c_dc_scale_table[32]; -extern const uint16_t ff_mpeg4_resync_prefix[8]; - -extern const uint8_t ff_mpeg4_dc_threshold[8]; - -void ff_mpeg4_encode_mb(MpegEncContext *s, - int16_t block[6][64], - int motion_x, int motion_y); -void ff_mpeg4_pred_ac(MpegEncContext *s, int16_t *block, int n, - int dir); -void ff_set_mpeg4_time(MpegEncContext *s); -void ff_mpeg4_encode_picture_header(MpegEncContext *s, int picture_number); - -int ff_mpeg4_decode_picture_header(Mpeg4DecContext *ctx, GetBitContext *gb); -void ff_mpeg4_encode_video_packet_header(MpegEncContext *s); -void ff_mpeg4_clean_buffers(MpegEncContext *s); -void ff_mpeg4_stuffing(PutBitContext *pbc); -void ff_mpeg4_init_partitions(MpegEncContext *s); -void ff_mpeg4_merge_partitions(MpegEncContext *s); -void ff_clean_mpeg4_qscales(MpegEncContext *s); -int ff_mpeg4_decode_partitions(Mpeg4DecContext *ctx); -int ff_mpeg4_get_video_packet_prefix_length(MpegEncContext *s); -int ff_mpeg4_decode_video_packet_header(Mpeg4DecContext *ctx); -void ff_mpeg4_init_direct_mv(MpegEncContext *s); -void ff_mpeg4videodec_static_init(void); -int ff_mpeg4_workaround_bugs(AVCodecContext *avctx); -int ff_mpeg4_frame_end(AVCodecContext *avctx, const uint8_t *buf, int buf_size); - -/** - * - * @return the mb_type - */ -int ff_mpeg4_set_direct_mv(MpegEncContext *s, int mx, int my); - -extern uint8_t ff_mpeg4_static_rl_table_store[3][2][2 * MAX_RUN + MAX_LEVEL + 3]; - -#if 0 //3IV1 is quite rare and it slows things down a tiny bit -#define IS_3IV1 s->codec_tag == AV_RL32("3IV1") -#else -#define IS_3IV1 0 -#endif - -/** - * Predict the dc. - * encoding quantized level -> quantized diff - * decoding quantized diff -> quantized level - * @param n block index (0-3 are luma, 4-5 are chroma) - * @param dir_ptr pointer to an integer where the prediction direction will be stored - */ -static inline int ff_mpeg4_pred_dc(MpegEncContext *s, int n, int level, - int *dir_ptr, int encoding) -{ - int a, b, c, wrap, pred, scale, ret; - int16_t *dc_val; - - /* find prediction */ - if (n < 4) - scale = s->y_dc_scale; - else - scale = s->c_dc_scale; - if (IS_3IV1) - scale = 8; - - wrap = s->block_wrap[n]; - dc_val = s->dc_val[0] + s->block_index[n]; - - /* B C - * A X - */ - a = dc_val[-1]; - b = dc_val[-1 - wrap]; - c = dc_val[-wrap]; - - /* outside slice handling (we can't do that by memset as we need the - * dc for error resilience) */ - if (s->first_slice_line && n != 3) { - if (n != 2) - b = c = 1024; - if (n != 1 && s->mb_x == s->resync_mb_x) - b = a = 1024; - } - if (s->mb_x == s->resync_mb_x && s->mb_y == s->resync_mb_y + 1) { - if (n == 0 || n == 4 || n == 5) - b = 1024; - } - - if (abs(a - b) < abs(b - c)) { - pred = c; - *dir_ptr = 1; /* top */ - } else { - pred = a; - *dir_ptr = 0; /* left */ - } - /* we assume pred is positive */ - pred = FASTDIV((pred + (scale >> 1)), scale); - - if (encoding) { - ret = level - pred; - } else { - level += pred; - ret = level; - if (s->err_recognition & (AV_EF_BITSTREAM | AV_EF_AGGRESSIVE)) { - if (level < 0) { - av_log(s->avctx, AV_LOG_ERROR, - "dc<0 at %dx%d\n", s->mb_x, s->mb_y); - return -1; - } - if (level * scale > 2048 + scale) { - av_log(s->avctx, AV_LOG_ERROR, - "dc overflow at %dx%d\n", s->mb_x, s->mb_y); - return -1; - } - } - } - level *= scale; - if (level & (~2047)) { - if (level < 0) - level = 0; - else if (!(s->workaround_bugs & FF_BUG_DC_CLIP)) - level = 2047; - } - dc_val[0] = level; - - return ret; -} - -#endif /* AVCODEC_MPEG4VIDEO_H */ |