| /* |
| * Generic DCT based hybrid video encoder |
| * Copyright (c) 2000, 2001, 2002 Fabrice Bellard |
| * Copyright (c) 2002-2004 Michael Niedermayer |
| * |
| * 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 |
| */ |
| |
| /** |
| * @file |
| * mpegvideo header. |
| */ |
| |
| #ifndef AVCODEC_MPEGVIDEO_H |
| #define AVCODEC_MPEGVIDEO_H |
| |
| #include "blockdsp.h" |
| #include "error_resilience.h" |
| #include "fdctdsp.h" |
| #include "get_bits.h" |
| #include "h264chroma.h" |
| #include "h263dsp.h" |
| #include "hpeldsp.h" |
| #include "idctdsp.h" |
| #include "me_cmp.h" |
| #include "motion_est.h" |
| #include "mpegpicture.h" |
| #include "mpegvideoencdsp.h" |
| #include "pixblockdsp.h" |
| #include "put_bits.h" |
| #include "ratecontrol.h" |
| #include "qpeldsp.h" |
| #include "videodsp.h" |
| |
| #define MAX_THREADS 32 |
| |
| #define MAX_B_FRAMES 16 |
| |
| /** |
| * Scantable. |
| */ |
| typedef struct ScanTable { |
| const uint8_t *scantable; |
| uint8_t permutated[64]; |
| uint8_t raster_end[64]; |
| } ScanTable; |
| |
| enum OutputFormat { |
| FMT_MPEG1, |
| FMT_H261, |
| FMT_H263, |
| FMT_MJPEG, |
| FMT_SPEEDHQ, |
| }; |
| |
| /** |
| * MpegEncContext. |
| */ |
| typedef struct MpegEncContext { |
| AVClass *class; |
| |
| int y_dc_scale, c_dc_scale; |
| int ac_pred; |
| int block_last_index[12]; ///< last non zero coefficient in block |
| int h263_aic; ///< Advanced INTRA Coding (AIC) |
| |
| /* scantables */ |
| ScanTable inter_scantable; ///< if inter == intra then intra should be used to reduce the cache usage |
| |
| /* WARNING: changes above this line require updates to hardcoded |
| * offsets used in ASM. */ |
| |
| ScanTable intra_scantable; |
| uint8_t permutated_intra_h_scantable[64]; |
| uint8_t permutated_intra_v_scantable[64]; |
| |
| struct AVCodecContext *avctx; |
| /* The following pointer is intended for codecs sharing code |
| * between decoder and encoder and in need of a common context to do so. */ |
| void *private_ctx; |
| /* the following parameters must be initialized before encoding */ |
| int width, height;///< picture size. must be a multiple of 16 |
| int gop_size; |
| int intra_only; ///< if true, only intra pictures are generated |
| int64_t bit_rate; ///< wanted bit rate |
| enum OutputFormat out_format; ///< output format |
| int h263_pred; ///< use MPEG-4/H.263 ac/dc predictions |
| int pb_frame; ///< PB-frame mode (0 = none, 1 = base, 2 = improved) |
| |
| /* the following codec id fields are deprecated in favor of codec_id */ |
| int h263_plus; ///< H.263+ headers |
| int h263_flv; ///< use flv H.263 header |
| |
| enum AVCodecID codec_id; /* see AV_CODEC_ID_xxx */ |
| int fixed_qscale; ///< fixed qscale if non zero |
| int encoding; ///< true if we are encoding (vs decoding) |
| int max_b_frames; ///< max number of B-frames for encoding |
| int luma_elim_threshold; |
| int chroma_elim_threshold; |
| int workaround_bugs; ///< workaround bugs in encoders which cannot be detected automatically |
| int codec_tag; ///< internal codec_tag upper case converted from avctx codec_tag |
| /* the following fields are managed internally by the encoder */ |
| |
| /* sequence parameters */ |
| int context_initialized; |
| int input_picture_number; ///< used to set pic->display_picture_number, should not be used for/by anything else |
| int coded_picture_number; ///< used to set pic->coded_picture_number, should not be used for/by anything else |
| int picture_number; //FIXME remove, unclear definition |
| int picture_in_gop_number; ///< 0-> first pic in gop, ... |
| int mb_width, mb_height; ///< number of MBs horizontally & vertically |
| int mb_stride; ///< mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11 |
| int b8_stride; ///< 2*mb_width+1 used for some 8x8 block arrays to allow simple addressing |
| int h_edge_pos, v_edge_pos;///< horizontal / vertical position of the right/bottom edge (pixel replication) |
| int mb_num; ///< number of MBs of a picture |
| ptrdiff_t linesize; ///< line size, in bytes, may be different from width |
| ptrdiff_t uvlinesize; ///< line size, for chroma in bytes, may be different from width |
| Picture *picture; ///< main picture buffer |
| Picture **input_picture; ///< next pictures on display order for encoding |
| Picture **reordered_input_picture; ///< pointer to the next pictures in coded order for encoding |
| |
| int64_t user_specified_pts; ///< last non-zero pts from AVFrame which was passed into avcodec_send_frame() |
| /** |
| * pts difference between the first and second input frame, used for |
| * calculating dts of the first frame when there's a delay */ |
| int64_t dts_delta; |
| /** |
| * reordered pts to be used as dts for the next output frame when there's |
| * a delay */ |
| int64_t reordered_pts; |
| |
| /** bit output */ |
| PutBitContext pb; |
| |
| int start_mb_y; ///< start mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y) |
| int end_mb_y; ///< end mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y) |
| struct MpegEncContext *thread_context[MAX_THREADS]; |
| int slice_context_count; ///< number of used thread_contexts |
| |
| /** |
| * copy of the previous picture structure. |
| * note, linesize & data, might not match the previous picture (for field pictures) |
| */ |
| Picture last_picture; |
| |
| /** |
| * copy of the next picture structure. |
| * note, linesize & data, might not match the next picture (for field pictures) |
| */ |
| Picture next_picture; |
| |
| /** |
| * Reference to the source picture for encoding. |
| * note, linesize & data, might not match the source picture (for field pictures) |
| */ |
| AVFrame *new_picture; |
| |
| /** |
| * copy of the current picture structure. |
| * note, linesize & data, might not match the current picture (for field pictures) |
| */ |
| Picture current_picture; ///< buffer to store the decompressed current picture |
| |
| Picture *last_picture_ptr; ///< pointer to the previous picture. |
| Picture *next_picture_ptr; ///< pointer to the next picture (for bidir pred) |
| Picture *current_picture_ptr; ///< pointer to the current picture |
| int skipped_last_frame; |
| int last_dc[3]; ///< last DC values for MPEG-1 |
| int16_t *dc_val_base; |
| int16_t *dc_val[3]; ///< used for MPEG-4 DC prediction, all 3 arrays must be continuous |
| const uint8_t *y_dc_scale_table; ///< qscale -> y_dc_scale table |
| const uint8_t *c_dc_scale_table; ///< qscale -> c_dc_scale table |
| const uint8_t *chroma_qscale_table; ///< qscale -> chroma_qscale (H.263) |
| uint8_t *coded_block_base; |
| uint8_t *coded_block; ///< used for coded block pattern prediction (msmpeg4v3, wmv1) |
| int16_t (*ac_val_base)[16]; |
| int16_t (*ac_val[3])[16]; ///< used for MPEG-4 AC prediction, all 3 arrays must be continuous |
| int mb_skipped; ///< MUST BE SET only during DECODING |
| uint8_t *mbskip_table; /**< used to avoid copy if macroblock skipped (for black regions for example) |
| and used for B-frame encoding & decoding (contains skip table of next P-frame) */ |
| uint8_t *mbintra_table; ///< used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding |
| uint8_t *cbp_table; ///< used to store cbp, ac_pred for partitioned decoding |
| uint8_t *pred_dir_table; ///< used to store pred_dir for partitioned decoding |
| |
| ScratchpadContext sc; |
| |
| int qscale; ///< QP |
| int chroma_qscale; ///< chroma QP |
| unsigned int lambda; ///< Lagrange multiplier used in rate distortion |
| unsigned int lambda2; ///< (lambda*lambda) >> FF_LAMBDA_SHIFT |
| int *lambda_table; |
| int adaptive_quant; ///< use adaptive quantization |
| int dquant; ///< qscale difference to prev qscale |
| int pict_type; ///< AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ... |
| int vbv_delay; |
| int last_pict_type; //FIXME removes |
| int last_non_b_pict_type; ///< used for MPEG-4 gmc B-frames & ratecontrol |
| int droppable; |
| int last_lambda_for[5]; ///< last lambda for a specific pict type |
| int skipdct; ///< skip dct and code zero residual |
| |
| /* motion compensation */ |
| int unrestricted_mv; ///< mv can point outside of the coded picture |
| int h263_long_vectors; ///< use horrible H.263v1 long vector mode |
| |
| BlockDSPContext bdsp; |
| FDCTDSPContext fdsp; |
| H264ChromaContext h264chroma; |
| HpelDSPContext hdsp; |
| IDCTDSPContext idsp; |
| MECmpContext mecc; |
| MpegvideoEncDSPContext mpvencdsp; |
| PixblockDSPContext pdsp; |
| QpelDSPContext qdsp; |
| VideoDSPContext vdsp; |
| H263DSPContext h263dsp; |
| int f_code; ///< forward MV resolution |
| int b_code; ///< backward MV resolution for B-frames (MPEG-4) |
| int16_t (*p_mv_table_base)[2]; |
| int16_t (*b_forw_mv_table_base)[2]; |
| int16_t (*b_back_mv_table_base)[2]; |
| int16_t (*b_bidir_forw_mv_table_base)[2]; |
| int16_t (*b_bidir_back_mv_table_base)[2]; |
| int16_t (*b_direct_mv_table_base)[2]; |
| int16_t (*p_field_mv_table_base)[2]; |
| int16_t (*b_field_mv_table_base)[2]; |
| int16_t (*p_mv_table)[2]; ///< MV table (1MV per MB) P-frame encoding |
| int16_t (*b_forw_mv_table)[2]; ///< MV table (1MV per MB) forward mode B-frame encoding |
| int16_t (*b_back_mv_table)[2]; ///< MV table (1MV per MB) backward mode B-frame encoding |
| int16_t (*b_bidir_forw_mv_table)[2]; ///< MV table (1MV per MB) bidir mode B-frame encoding |
| int16_t (*b_bidir_back_mv_table)[2]; ///< MV table (1MV per MB) bidir mode B-frame encoding |
| int16_t (*b_direct_mv_table)[2]; ///< MV table (1MV per MB) direct mode B-frame encoding |
| int16_t (*p_field_mv_table[2][2])[2]; ///< MV table (2MV per MB) interlaced P-frame encoding |
| int16_t (*b_field_mv_table[2][2][2])[2];///< MV table (4MV per MB) interlaced B-frame encoding |
| uint8_t (*p_field_select_table[2]); ///< Only the first element is allocated |
| uint8_t (*b_field_select_table[2][2]); ///< Only the first element is allocated |
| |
| /* The following fields are encoder-only */ |
| uint16_t *mb_var; ///< Table for MB variances |
| uint16_t *mc_mb_var; ///< Table for motion compensated MB variances |
| uint8_t *mb_mean; ///< Table for MB luminance |
| int64_t mb_var_sum; ///< sum of MB variance for current frame |
| int64_t mc_mb_var_sum; ///< motion compensated MB variance for current frame |
| uint64_t encoding_error[MPEGVIDEO_MAX_PLANES]; |
| |
| int motion_est; ///< ME algorithm |
| int me_penalty_compensation; |
| int me_pre; ///< prepass for motion estimation |
| int mv_dir; |
| #define MV_DIR_FORWARD 1 |
| #define MV_DIR_BACKWARD 2 |
| #define MV_DIRECT 4 ///< bidirectional mode where the difference equals the MV of the last P/S/I-Frame (MPEG-4) |
| int mv_type; |
| #define MV_TYPE_16X16 0 ///< 1 vector for the whole mb |
| #define MV_TYPE_8X8 1 ///< 4 vectors (H.263, MPEG-4 4MV) |
| #define MV_TYPE_16X8 2 ///< 2 vectors, one per 16x8 block |
| #define MV_TYPE_FIELD 3 ///< 2 vectors, one per field |
| #define MV_TYPE_DMV 4 ///< 2 vectors, special mpeg2 Dual Prime Vectors |
| /**motion vectors for a macroblock |
| first coordinate : 0 = forward 1 = backward |
| second " : depend on type |
| third " : 0 = x, 1 = y |
| */ |
| int mv[2][4][2]; |
| int field_select[2][2]; |
| int last_mv[2][2][2]; ///< last MV, used for MV prediction in MPEG-1 & B-frame MPEG-4 |
| const uint8_t *fcode_tab; ///< smallest fcode needed for each MV |
| int16_t direct_scale_mv[2][64]; ///< precomputed to avoid divisions in ff_mpeg4_set_direct_mv |
| |
| MotionEstContext me; |
| |
| int no_rounding; /**< apply no rounding to motion compensation (MPEG-4, msmpeg4, ...) |
| for B-frames rounding mode is always 0 */ |
| |
| /* macroblock layer */ |
| int mb_x, mb_y; |
| int mb_skip_run; |
| int mb_intra; |
| uint16_t *mb_type; ///< Table for candidate MB types for encoding (defines in mpegvideoenc.h) |
| |
| int block_index[6]; ///< index to current MB in block based arrays with edges |
| int block_wrap[6]; |
| uint8_t *dest[3]; |
| |
| int *mb_index2xy; ///< mb_index -> mb_x + mb_y*mb_stride |
| |
| /** matrix transmitted in the bitstream */ |
| uint16_t intra_matrix[64]; |
| uint16_t chroma_intra_matrix[64]; |
| uint16_t inter_matrix[64]; |
| uint16_t chroma_inter_matrix[64]; |
| |
| int intra_quant_bias; ///< bias for the quantizer |
| int inter_quant_bias; ///< bias for the quantizer |
| int min_qcoeff; ///< minimum encodable coefficient |
| int max_qcoeff; ///< maximum encodable coefficient |
| int ac_esc_length; ///< num of bits needed to encode the longest esc |
| uint8_t *intra_ac_vlc_length; |
| uint8_t *intra_ac_vlc_last_length; |
| uint8_t *intra_chroma_ac_vlc_length; |
| uint8_t *intra_chroma_ac_vlc_last_length; |
| uint8_t *inter_ac_vlc_length; |
| uint8_t *inter_ac_vlc_last_length; |
| uint8_t *luma_dc_vlc_length; |
| |
| int coded_score[12]; |
| |
| /** precomputed matrix (combine qscale and DCT renorm) */ |
| int (*q_intra_matrix)[64]; |
| int (*q_chroma_intra_matrix)[64]; |
| int (*q_inter_matrix)[64]; |
| /** identical to the above but for MMX & these are not permutated, second 64 entries are bias*/ |
| uint16_t (*q_intra_matrix16)[2][64]; |
| uint16_t (*q_chroma_intra_matrix16)[2][64]; |
| uint16_t (*q_inter_matrix16)[2][64]; |
| |
| /* noise reduction */ |
| int (*dct_error_sum)[64]; |
| int dct_count[2]; |
| uint16_t (*dct_offset)[64]; |
| |
| /* bit rate control */ |
| int64_t total_bits; |
| int frame_bits; ///< bits used for the current frame |
| int stuffing_bits; ///< bits used for stuffing |
| int next_lambda; ///< next lambda used for retrying to encode a frame |
| RateControlContext rc_context; ///< contains stuff only accessed in ratecontrol.c |
| |
| /* statistics, used for 2-pass encoding */ |
| int mv_bits; |
| int header_bits; |
| int i_tex_bits; |
| int p_tex_bits; |
| int i_count; |
| int skip_count; |
| int misc_bits; ///< cbp, mb_type |
| int last_bits; ///< temp var used for calculating the above vars |
| |
| /* error concealment / resync */ |
| int resync_mb_x; ///< x position of last resync marker |
| int resync_mb_y; ///< y position of last resync marker |
| GetBitContext last_resync_gb; ///< used to search for the next resync marker |
| int mb_num_left; ///< number of MBs left in this video packet (for partitioned Slices only) |
| |
| /* H.263 specific */ |
| int gob_index; |
| int obmc; ///< overlapped block motion compensation |
| int mb_info; ///< interval for outputting info about mb offsets as side data |
| int prev_mb_info, last_mb_info; |
| uint8_t *mb_info_ptr; |
| int mb_info_size; |
| int ehc_mode; |
| |
| /* H.263+ specific */ |
| int umvplus; ///< == H.263+ && unrestricted_mv |
| int h263_aic_dir; ///< AIC direction: 0 = left, 1 = top |
| int h263_slice_structured; |
| int alt_inter_vlc; ///< alternative inter vlc |
| int modified_quant; |
| int loop_filter; |
| int custom_pcf; |
| |
| /* MPEG-4 specific */ |
| int studio_profile; |
| int dct_precision; |
| ///< number of bits to represent the fractional part of time (encoder only) |
| int time_increment_bits; |
| int last_time_base; |
| int time_base; ///< time in seconds of last I,P,S Frame |
| int64_t time; ///< time of current frame |
| int64_t last_non_b_time; |
| uint16_t pp_time; ///< time distance between the last 2 p,s,i frames |
| uint16_t pb_time; ///< time distance between the last b and p,s,i frame |
| uint16_t pp_field_time; |
| uint16_t pb_field_time; ///< like above, just for interlaced |
| int mcsel; |
| int quant_precision; |
| int quarter_sample; ///< 1->qpel, 0->half pel ME/MC |
| int data_partitioning; ///< data partitioning flag from header |
| int partitioned_frame; ///< is current frame partitioned |
| int low_delay; ///< no reordering needed / has no B-frames |
| PutBitContext tex_pb; ///< used for data partitioned VOPs |
| PutBitContext pb2; ///< used for data partitioned VOPs |
| int mpeg_quant; |
| int padding_bug_score; ///< used to detect the VERY common padding bug in MPEG-4 |
| |
| /* divx specific, used to workaround (many) bugs in divx5 */ |
| int divx_packed; |
| uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them |
| int bitstream_buffer_size; |
| unsigned int allocated_bitstream_buffer_size; |
| |
| /* RV10 specific */ |
| int rv10_version; ///< RV10 version: 0 or 3 |
| int rv10_first_dc_coded[3]; |
| |
| /* MJPEG specific */ |
| struct MJpegContext *mjpeg_ctx; |
| int esc_pos; |
| |
| /* MSMPEG4 specific */ |
| int mv_table_index; |
| int rl_table_index; |
| int rl_chroma_table_index; |
| int dc_table_index; |
| int use_skip_mb_code; |
| int slice_height; ///< in macroblocks |
| int first_slice_line; ///< used in MPEG-4 too to handle resync markers |
| int flipflop_rounding; |
| int msmpeg4_version; ///< 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8 |
| int per_mb_rl_table; |
| int esc3_level_length; |
| int esc3_run_length; |
| int inter_intra_pred; |
| int mspel; |
| |
| /* decompression specific */ |
| GetBitContext gb; |
| |
| /* MPEG-1 specific */ |
| int last_mv_dir; ///< last mv_dir, used for B-frame encoding |
| int vbv_delay_pos; ///< offset of vbv_delay in the bitstream |
| |
| /* MPEG-2-specific - I wished not to have to support this mess. */ |
| int progressive_sequence; |
| int mpeg_f_code[2][2]; |
| |
| // picture structure defines are loaded from mpegutils.h |
| int picture_structure; |
| |
| int intra_dc_precision; |
| int frame_pred_frame_dct; |
| int top_field_first; |
| int concealment_motion_vectors; |
| int q_scale_type; |
| int brd_scale; |
| int intra_vlc_format; |
| int alternate_scan; |
| int repeat_first_field; |
| int chroma_420_type; |
| int chroma_format; |
| #define CHROMA_420 1 |
| #define CHROMA_422 2 |
| #define CHROMA_444 3 |
| int chroma_x_shift;//depend on pix_format, that depend on chroma_format |
| int chroma_y_shift; |
| |
| int progressive_frame; |
| int full_pel[2]; |
| int interlaced_dct; |
| int first_field; ///< is 1 for the first field of a field picture 0 otherwise |
| |
| /* RTP specific */ |
| int rtp_mode; |
| int rtp_payload_size; |
| |
| uint8_t *ptr_lastgob; |
| int16_t (*pblocks[12])[64]; |
| |
| int16_t (*block)[64]; ///< points to one of the following blocks |
| int16_t (*blocks)[12][64]; // for HQ mode we need to keep the best block |
| int (*decode_mb)(struct MpegEncContext *s, int16_t block[12][64]); // used by some codecs to avoid a switch() |
| |
| #define SLICE_OK 0 |
| #define SLICE_ERROR -1 |
| #define SLICE_END -2 ///<end marker found |
| #define SLICE_NOEND -3 ///<no end marker or error found but mb count exceeded |
| |
| void (*dct_unquantize_mpeg1_intra)(struct MpegEncContext *s, |
| int16_t *block/*align 16*/, int n, int qscale); |
| void (*dct_unquantize_mpeg1_inter)(struct MpegEncContext *s, |
| int16_t *block/*align 16*/, int n, int qscale); |
| void (*dct_unquantize_mpeg2_intra)(struct MpegEncContext *s, |
| int16_t *block/*align 16*/, int n, int qscale); |
| void (*dct_unquantize_mpeg2_inter)(struct MpegEncContext *s, |
| int16_t *block/*align 16*/, int n, int qscale); |
| void (*dct_unquantize_h263_intra)(struct MpegEncContext *s, |
| int16_t *block/*align 16*/, int n, int qscale); |
| void (*dct_unquantize_h263_inter)(struct MpegEncContext *s, |
| int16_t *block/*align 16*/, int n, int qscale); |
| void (*dct_unquantize_intra)(struct MpegEncContext *s, // unquantizer to use (MPEG-4 can use both) |
| int16_t *block/*align 16*/, int n, int qscale); |
| void (*dct_unquantize_inter)(struct MpegEncContext *s, // unquantizer to use (MPEG-4 can use both) |
| int16_t *block/*align 16*/, int n, int qscale); |
| int (*dct_quantize)(struct MpegEncContext *s, int16_t *block/*align 16*/, int n, int qscale, int *overflow); |
| int (*fast_dct_quantize)(struct MpegEncContext *s, int16_t *block/*align 16*/, int n, int qscale, int *overflow); |
| void (*denoise_dct)(struct MpegEncContext *s, int16_t *block); |
| |
| int mpv_flags; ///< flags set by private options |
| int quantizer_noise_shaping; |
| |
| /** |
| * ratecontrol qmin qmax limiting method |
| * 0-> clipping, 1-> use a nice continuous function to limit qscale within qmin/qmax. |
| */ |
| float rc_qsquish; |
| float rc_qmod_amp; |
| int rc_qmod_freq; |
| float rc_initial_cplx; |
| float rc_buffer_aggressivity; |
| float border_masking; |
| int lmin, lmax; |
| int vbv_ignore_qmax; |
| |
| char *rc_eq; |
| |
| /* temp buffers for rate control */ |
| float *cplx_tab, *bits_tab; |
| |
| /* flag to indicate a reinitialization is required, e.g. after |
| * a frame size change */ |
| int context_reinit; |
| |
| ERContext er; |
| |
| int error_rate; |
| |
| /* temporary frames used by b_frame_strategy = 2 */ |
| AVFrame *tmp_frames[MAX_B_FRAMES + 2]; |
| int b_frame_strategy; |
| int b_sensitivity; |
| |
| /* frame skip options for encoding */ |
| int frame_skip_threshold; |
| int frame_skip_factor; |
| int frame_skip_exp; |
| int frame_skip_cmp; |
| |
| int scenechange_threshold; |
| int noise_reduction; |
| |
| int intra_penalty; |
| } MpegEncContext; |
| |
| |
| /** |
| * Set the given MpegEncContext to common defaults (same for encoding |
| * and decoding). The changed fields will not depend upon the prior |
| * state of the MpegEncContext. |
| */ |
| void ff_mpv_common_defaults(MpegEncContext *s); |
| |
| int ff_mpv_common_init(MpegEncContext *s); |
| void ff_mpv_common_init_arm(MpegEncContext *s); |
| void ff_mpv_common_init_axp(MpegEncContext *s); |
| void ff_mpv_common_init_neon(MpegEncContext *s); |
| void ff_mpv_common_init_ppc(MpegEncContext *s); |
| void ff_mpv_common_init_x86(MpegEncContext *s); |
| void ff_mpv_common_init_mips(MpegEncContext *s); |
| /** |
| * Initialize an MpegEncContext's thread contexts. Presumes that |
| * slice_context_count is already set and that all the fields |
| * that are freed/reset in free_duplicate_context() are NULL. |
| */ |
| int ff_mpv_init_duplicate_contexts(MpegEncContext *s); |
| /** |
| * Initialize and allocates MpegEncContext fields dependent on the resolution. |
| */ |
| int ff_mpv_init_context_frame(MpegEncContext *s); |
| /** |
| * Frees and resets MpegEncContext fields depending on the resolution |
| * as well as the slice thread contexts. |
| * Is used during resolution changes to avoid a full reinitialization of the |
| * codec. |
| */ |
| void ff_mpv_free_context_frame(MpegEncContext *s); |
| |
| void ff_mpv_common_end(MpegEncContext *s); |
| |
| void ff_clean_intra_table_entries(MpegEncContext *s); |
| |
| int ff_update_duplicate_context(MpegEncContext *dst, const MpegEncContext *src); |
| void ff_set_qscale(MpegEncContext * s, int qscale); |
| |
| void ff_mpv_idct_init(MpegEncContext *s); |
| void ff_init_scantable(const uint8_t *permutation, ScanTable *st, |
| const uint8_t *src_scantable); |
| void ff_init_block_index(MpegEncContext *s); |
| |
| void ff_mpv_motion(MpegEncContext *s, |
| uint8_t *dest_y, uint8_t *dest_cb, |
| uint8_t *dest_cr, int dir, |
| uint8_t *const *ref_picture, |
| op_pixels_func (*pix_op)[4], |
| qpel_mc_func (*qpix_op)[16]); |
| |
| static inline void ff_update_block_index(MpegEncContext *s, int bits_per_raw_sample, |
| int lowres, int chroma_x_shift) |
| { |
| const int bytes_per_pixel = 1 + (bits_per_raw_sample > 8); |
| const int block_size = (8 * bytes_per_pixel) >> lowres; |
| |
| s->block_index[0]+=2; |
| s->block_index[1]+=2; |
| s->block_index[2]+=2; |
| s->block_index[3]+=2; |
| s->block_index[4]++; |
| s->block_index[5]++; |
| s->dest[0]+= 2*block_size; |
| s->dest[1] += (2 >> chroma_x_shift) * block_size; |
| s->dest[2] += (2 >> chroma_x_shift) * block_size; |
| } |
| |
| #endif /* AVCODEC_MPEGVIDEO_H */ |
