FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/mpegvideoenc.h
Date: 2025-06-23 20:06:14
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Lines: 8 8 100.0%
Functions: 2 2 100.0%
Branches: 0 0 -%
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1 /*
2 * Generic DCT based hybrid video encoder
3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
4 * Copyright (c) 2002-2004 Michael Niedermayer
5 *
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23 /**
24 * @file
25 * mpegvideo header.
26 */
27
28 #ifndef AVCODEC_MPEGVIDEOENC_H
29 #define AVCODEC_MPEGVIDEOENC_H
30
31 #include <float.h>
32
33 #include "libavutil/avassert.h"
34 #include "libavutil/opt.h"
35 #include "fdctdsp.h"
36 #include "motion_est.h"
37 #include "mpegvideo.h"
38 #include "mpegvideoencdsp.h"
39 #include "pixblockdsp.h"
40 #include "put_bits.h"
41 #include "ratecontrol.h"
42
43 #define MPVENC_MAX_B_FRAMES 16
44
45 typedef struct MPVEncContext {
46 MpegEncContext c; ///< the common base context
47
48 /** bit output */
49 PutBitContext pb;
50
51 unsigned int lambda; ///< Lagrange multiplier used in rate distortion
52 unsigned int lambda2; ///< (lambda*lambda) >> FF_LAMBDA_SHIFT
53 int *lambda_table;
54 int adaptive_quant; ///< use adaptive quantization
55 int dquant; ///< qscale difference to prev qscale
56 int skipdct; ///< skip dct and code zero residual
57
58 int quantizer_noise_shaping;
59
60 int luma_elim_threshold;
61 int chroma_elim_threshold;
62
63 int mpv_flags; ///< flags set by private options
64 /// Bitfield containing information which frames to reconstruct.
65 int frame_reconstruction_bitfield;
66
67 /**
68 * Reference to the source picture.
69 */
70 AVFrame *new_pic;
71
72 struct MPVMainEncContext *parent;
73
74 FDCTDSPContext fdsp;
75 MpegvideoEncDSPContext mpvencdsp;
76 PixblockDSPContext pdsp;
77 MotionEstContext me;
78
79 int f_code; ///< forward MV resolution
80 int b_code; ///< backward MV resolution for B-frames
81
82 int16_t (*p_mv_table)[2]; ///< MV table (1MV per MB) P-frame
83 int16_t (*b_forw_mv_table)[2]; ///< MV table (1MV per MB) forward mode B-frame
84 int16_t (*b_back_mv_table)[2]; ///< MV table (1MV per MB) backward mode B-frame
85 int16_t (*b_bidir_forw_mv_table)[2]; ///< MV table (1MV per MB) bidir mode B-frame
86 int16_t (*b_bidir_back_mv_table)[2]; ///< MV table (1MV per MB) bidir mode B-frame
87 int16_t (*b_direct_mv_table)[2]; ///< MV table (1MV per MB) direct mode B-frame
88 int16_t (*b_field_mv_table[2][2][2])[2];///< MV table (4MV per MB) interlaced B-frame
89 uint8_t (*p_field_select_table[2]); ///< Only the first element is allocated
90 uint8_t (*b_field_select_table[2][2]); ///< allocated jointly with p_field_select_table
91
92 uint16_t *mb_type; ///< Table for candidate MB types
93 uint16_t *mb_var; ///< Table for MB variances
94 uint16_t *mc_mb_var; ///< Table for motion compensated MB variances
95 uint8_t *mb_mean; ///< Table for MB luminance
96 uint64_t encoding_error[MPV_MAX_PLANES];
97
98 int intra_quant_bias; ///< bias for the quantizer
99 int inter_quant_bias; ///< bias for the quantizer
100 int min_qcoeff; ///< minimum encodable coefficient
101 int max_qcoeff; ///< maximum encodable coefficient
102 int ac_esc_length; ///< num of bits needed to encode the longest esc
103 const uint8_t *intra_ac_vlc_length;
104 const uint8_t *intra_ac_vlc_last_length;
105 const uint8_t *intra_chroma_ac_vlc_length;
106 const uint8_t *intra_chroma_ac_vlc_last_length;
107 const uint8_t *inter_ac_vlc_length;
108 const uint8_t *inter_ac_vlc_last_length;
109 const uint8_t *luma_dc_vlc_length;
110
111 int coded_score[12];
112
113 /** precomputed matrix (combine qscale and DCT renorm) */
114 int (*q_intra_matrix)[64];
115 int (*q_chroma_intra_matrix)[64];
116 int (*q_inter_matrix)[64];
117 /** identical to the above but for MMX & these are not permutated, second 64 entries are bias*/
118 uint16_t (*q_intra_matrix16)[2][64];
119 uint16_t (*q_chroma_intra_matrix16)[2][64];
120 uint16_t (*q_inter_matrix16)[2][64];
121
122 /* noise reduction */
123 void (*denoise_dct)(struct MPVEncContext *s, int16_t *block);
124 int (*dct_error_sum)[64];
125 int dct_count[2];
126 uint16_t (*dct_offset)[64];
127
128 /* statistics, used for 2-pass encoding */
129 int mv_bits;
130 int i_tex_bits;
131 int p_tex_bits;
132 int i_count;
133 int misc_bits; ///< cbp, mb_type
134 int last_bits; ///< temp var used for calculating the above vars
135
136 /* H.263 specific */
137 int mb_info; ///< interval for outputting info about mb offsets as side data
138 int prev_mb_info, last_mb_info;
139 int mb_info_size;
140 uint8_t *mb_info_ptr;
141
142 /* MJPEG specific */
143 struct MJpegContext *mjpeg_ctx;
144 int esc_pos;
145
146 /* MPEG-1 specific */
147 int last_mv_dir; ///< last mv_dir, used for B-frame encoding
148
149 /* MPEG-4 specific */
150 int mpeg_quant;
151 PutBitContext tex_pb; ///< used for data partitioned VOPs
152 PutBitContext pb2; ///< used for data partitioned VOPs
153
154 /* MSMPEG4 specific */
155 int esc3_level_length;
156
157 /* RTP specific */
158 int rtp_mode;
159 int rtp_payload_size;
160 int error_rate;
161
162 uint8_t *ptr_lastgob;
163
164 void (*encode_mb)(struct MPVEncContext *s, int16_t block[][64],
165 int motion_x, int motion_y);
166
167 int (*dct_quantize)(struct MPVEncContext *s, int16_t *block/*align 16*/, int n, int qscale, int *overflow);
168
169 me_cmp_func ildct_cmp[2]; ///< 0 = intra, 1 = non-intra
170 me_cmp_func n_sse_cmp[2]; ///< either SSE or NSSE cmp func
171 me_cmp_func sad_cmp[2];
172 me_cmp_func sse_cmp[2];
173 int (*sum_abs_dctelem)(const int16_t *block);
174
175 int intra_penalty;
176 } MPVEncContext;
177
178 typedef struct MPVMainEncContext {
179 MPVEncContext s; ///< The main slicecontext
180
181 int intra_only; ///< if true, only intra pictures are generated
182 int gop_size;
183 int max_b_frames; ///< max number of B-frames
184 int picture_in_gop_number; ///< 0-> first pic in gop, ...
185 int input_picture_number; ///< used to set pic->display_picture_number
186 int coded_picture_number; ///< used to set pic->coded_picture_number
187
188 MPVPicture *input_picture[MPVENC_MAX_B_FRAMES + 1]; ///< next pictures in display order
189 MPVPicture *reordered_input_picture[MPVENC_MAX_B_FRAMES + 1]; ///< next pictures in coded order
190
191 int64_t user_specified_pts; ///< last non-zero pts from user-supplied AVFrame
192 /**
193 * pts difference between the first and second input frame, used for
194 * calculating dts of the first frame when there's a delay */
195 int64_t dts_delta;
196 /**
197 * reordered pts to be used as dts for the next output frame when there's
198 * a delay */
199 int64_t reordered_pts;
200
201 /// temporary frames used by b_frame_strategy = 2
202 AVFrame *tmp_frames[MPVENC_MAX_B_FRAMES + 2];
203 int b_frame_strategy;
204 int b_sensitivity;
205 int brd_scale;
206
207 int scenechange_threshold;
208
209 int noise_reduction;
210
211 float border_masking;
212 int lmin, lmax;
213 int vbv_ignore_qmax;
214
215 /* MPEG-1/2 specific */
216 int vbv_delay_pos; ///< offset of vbv_delay in the bitstream
217
218 const uint8_t *fcode_tab; ///< smallest fcode needed for each MV
219
220 /* frame skip options */
221 int frame_skip_threshold;
222 int frame_skip_factor;
223 int frame_skip_exp;
224 int frame_skip_cmp;
225 me_cmp_func frame_skip_cmp_fn;
226
227 int (*encode_picture_header)(struct MPVMainEncContext *m);
228
229 /* bit rate control */
230 int64_t bit_rate;
231 int64_t total_bits;
232 int frame_bits; ///< bits used for the current frame
233 int header_bits;
234 int stuffing_bits; ///< bits used for stuffing
235 int next_lambda; ///< next lambda used for retrying to encode a frame
236 int fixed_qscale; ///< fixed qscale if non zero
237 int last_lambda_for[5]; ///< last lambda for a specific pict type
238 int last_pict_type; //FIXME removes
239 int last_non_b_pict_type; ///< used for MPEG-4 gmc B-frames & ratecontrol
240 RateControlContext rc_context; ///< contains stuff only accessed in ratecontrol.c
241
242 int me_penalty_compensation;
243 int me_pre; ///< prepass for motion estimation
244
245 int64_t mb_var_sum; ///< sum of MB variance for current frame
246 int64_t mc_mb_var_sum; ///< motion compensated MB variance for current frame
247
248 char *me_map_base; ///< backs MotionEstContext.(map|score_map)
249 char *dct_error_sum_base; ///< backs dct_error_sum
250 int16_t (*mv_table_base)[2];
251 } MPVMainEncContext;
252
253 22874 static inline const MPVMainEncContext *slice_to_mainenc(const MPVEncContext *s)
254 {
255 #ifdef NO_SLICE_THREADING_HERE
256 av_assert2(s->c.slice_context_count <= 1 &&
257 !(s->c.avctx->codec->capabilities & AV_CODEC_CAP_SLICE_THREADS));
258 63 return (const MPVMainEncContext*)s;
259 #else
260 22811 return s->parent;
261 #endif
262 }
263
264 #define MAX_FCODE 7
265 #define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level))
266 #define INPLACE_OFFSET 16
267
268 /* MB types for encoding */
269 #define CANDIDATE_MB_TYPE_INTRA (1 << 0)
270 #define CANDIDATE_MB_TYPE_INTER (1 << 1)
271 #define CANDIDATE_MB_TYPE_INTER4V (1 << 2)
272 #define CANDIDATE_MB_TYPE_SKIPPED (1 << 3)
273
274 #define CANDIDATE_MB_TYPE_DIRECT (1 << 4)
275 #define CANDIDATE_MB_TYPE_FORWARD (1 << 5)
276 #define CANDIDATE_MB_TYPE_BACKWARD (1 << 6)
277 #define CANDIDATE_MB_TYPE_BIDIR (1 << 7)
278
279 #define CANDIDATE_MB_TYPE_INTER_I (1 << 8)
280 #define CANDIDATE_MB_TYPE_FORWARD_I (1 << 9)
281 #define CANDIDATE_MB_TYPE_BACKWARD_I (1 << 10)
282 #define CANDIDATE_MB_TYPE_BIDIR_I (1 << 11)
283
284 #define CANDIDATE_MB_TYPE_DIRECT0 (1 << 12)
285
286 /* mpegvideo_enc common options */
287 #define FF_MPV_FLAG_SKIP_RD 0x0001
288 #define FF_MPV_FLAG_STRICT_GOP 0x0002
289 #define FF_MPV_FLAG_QP_RD 0x0004
290 #define FF_MPV_FLAG_CBP_RD 0x0008
291 #define FF_MPV_FLAG_NAQ 0x0010
292 #define FF_MPV_FLAG_MV0 0x0020
293
294 #define FF_MPV_OPT_CMP_FUNC \
295 { "sad", "Sum of absolute differences, fast", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_SAD }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, .unit = "cmp_func" }, \
296 { "sse", "Sum of squared errors", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_SSE }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, .unit = "cmp_func" }, \
297 { "satd", "Sum of absolute Hadamard transformed differences", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_SATD }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, .unit = "cmp_func" }, \
298 { "dct", "Sum of absolute DCT transformed differences", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_DCT }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, .unit = "cmp_func" }, \
299 { "psnr", "Sum of squared quantization errors, low quality", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_PSNR }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, .unit = "cmp_func" }, \
300 { "bit", "Number of bits needed for the block", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_BIT }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, .unit = "cmp_func" }, \
301 { "rd", "Rate distortion optimal, slow", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_RD }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, .unit = "cmp_func" }, \
302 { "zero", "Zero", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_ZERO }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, .unit = "cmp_func" }, \
303 { "vsad", "Sum of absolute vertical differences", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_VSAD }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, .unit = "cmp_func" }, \
304 { "vsse", "Sum of squared vertical differences", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_VSSE }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, .unit = "cmp_func" }, \
305 { "nsse", "Noise preserving sum of squared differences", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_NSSE }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, .unit = "cmp_func" }, \
306 { "dct264", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_DCT264 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, .unit = "cmp_func" }, \
307 { "dctmax", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_DCTMAX }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, .unit = "cmp_func" }, \
308 { "chroma", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_CHROMA }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, .unit = "cmp_func" }, \
309 { "msad", "Sum of absolute differences, median predicted", 0, AV_OPT_TYPE_CONST, {.i64 = FF_CMP_MEDIAN_SAD }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, .unit = "cmp_func" }
310
311 #define FF_MPV_OFFSET(x) offsetof(MPVEncContext, x)
312 #define FF_MPV_MAIN_OFFSET(x) offsetof(MPVMainEncContext, x)
313 #define FF_RC_OFFSET(x) offsetof(MPVMainEncContext, rc_context.x)
314 #define FF_MPV_OPT_FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
315 #define FF_MPV_COMMON_OPTS \
316 FF_MPV_OPT_CMP_FUNC, \
317 { "mpv_flags", "Flags common for all mpegvideo-based encoders.", FF_MPV_OFFSET(mpv_flags), AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, .unit = "mpv_flags" },\
318 { "skip_rd", "RD optimal MB level residual skipping", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_SKIP_RD }, 0, 0, FF_MPV_OPT_FLAGS, .unit = "mpv_flags" },\
319 { "strict_gop", "Strictly enforce gop size", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_STRICT_GOP }, 0, 0, FF_MPV_OPT_FLAGS, .unit = "mpv_flags" },\
320 { "qp_rd", "Use rate distortion optimization for qp selection", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_QP_RD }, 0, 0, FF_MPV_OPT_FLAGS, .unit = "mpv_flags" },\
321 { "cbp_rd", "use rate distortion optimization for CBP", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_CBP_RD }, 0, 0, FF_MPV_OPT_FLAGS, .unit = "mpv_flags" },\
322 { "naq", "normalize adaptive quantization", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_NAQ }, 0, 0, FF_MPV_OPT_FLAGS, .unit = "mpv_flags" },\
323 { "luma_elim_threshold", "single coefficient elimination threshold for luminance (negative values also consider dc coefficient)",\
324 FF_MPV_OFFSET(luma_elim_threshold), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS },\
325 { "chroma_elim_threshold", "single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)",\
326 FF_MPV_OFFSET(chroma_elim_threshold), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS },\
327 { "quantizer_noise_shaping", NULL, FF_MPV_OFFSET(quantizer_noise_shaping), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FF_MPV_OPT_FLAGS },\
328 { "error_rate", "Simulate errors in the bitstream to test error concealment.", \
329 FF_MPV_OFFSET(error_rate), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FF_MPV_OPT_FLAGS },\
330 {"qsquish", "how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function)", \
331 FF_RC_OFFSET(qsquish), AV_OPT_TYPE_FLOAT, {.dbl = 0 }, 0, 99, FF_MPV_OPT_FLAGS}, \
332 {"rc_qmod_amp", "experimental quantizer modulation", FF_RC_OFFSET(qmod_amp), AV_OPT_TYPE_FLOAT, {.dbl = 0 }, -FLT_MAX, FLT_MAX, FF_MPV_OPT_FLAGS}, \
333 {"rc_qmod_freq", "experimental quantizer modulation", FF_RC_OFFSET(qmod_freq), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS}, \
334 {"rc_eq", "Set rate control equation. When computing the expression, besides the standard functions " \
335 "defined in the section 'Expression Evaluation', the following functions are available: " \
336 "bits2qp(bits), qp2bits(qp). Also the following constants are available: iTex pTex tex mv " \
337 "fCode iCount mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex avgTex.", \
338 FF_RC_OFFSET(rc_eq), AV_OPT_TYPE_STRING, .flags = FF_MPV_OPT_FLAGS }, \
339 {"rc_init_cplx", "initial complexity for 1-pass encoding", FF_RC_OFFSET(initial_cplx), AV_OPT_TYPE_FLOAT, {.dbl = 0 }, -FLT_MAX, FLT_MAX, FF_MPV_OPT_FLAGS}, \
340 {"rc_buf_aggressivity", "currently useless", FF_RC_OFFSET(buffer_aggressivity), AV_OPT_TYPE_FLOAT, {.dbl = 1.0 }, -FLT_MAX, FLT_MAX, FF_MPV_OPT_FLAGS}, \
341 {"border_mask", "increase the quantizer for macroblocks close to borders", FF_MPV_MAIN_OFFSET(border_masking), AV_OPT_TYPE_FLOAT, {.dbl = 0 }, -FLT_MAX, FLT_MAX, FF_MPV_OPT_FLAGS}, \
342 {"lmin", "minimum Lagrange factor (VBR)", FF_MPV_MAIN_OFFSET(lmin), AV_OPT_TYPE_INT, {.i64 = 2*FF_QP2LAMBDA }, 0, INT_MAX, FF_MPV_OPT_FLAGS }, \
343 {"lmax", "maximum Lagrange factor (VBR)", FF_MPV_MAIN_OFFSET(lmax), AV_OPT_TYPE_INT, {.i64 = 31*FF_QP2LAMBDA }, 0, INT_MAX, FF_MPV_OPT_FLAGS }, \
344 {"skip_threshold", "Frame skip threshold", FF_MPV_MAIN_OFFSET(frame_skip_threshold), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
345 {"skip_factor", "Frame skip factor", FF_MPV_MAIN_OFFSET(frame_skip_factor), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
346 {"skip_exp", "Frame skip exponent", FF_MPV_MAIN_OFFSET(frame_skip_exp), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
347 {"skip_cmp", "Frame skip compare function", FF_MPV_MAIN_OFFSET(frame_skip_cmp), AV_OPT_TYPE_INT, {.i64 = FF_CMP_DCTMAX }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, .unit = "cmp_func" }, \
348 {"noise_reduction", "Noise reduction", FF_MPV_MAIN_OFFSET(noise_reduction), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
349 {"ps", "RTP payload size in bytes", FF_MPV_OFFSET(rtp_payload_size), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
350
351 #define FF_MPV_COMMON_BFRAME_OPTS \
352 {"b_strategy", "Strategy to choose between I/P/B-frames", FF_MPV_MAIN_OFFSET(b_frame_strategy), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 2, FF_MPV_OPT_FLAGS }, \
353 {"b_sensitivity", "Adjust sensitivity of b_frame_strategy 1", FF_MPV_MAIN_OFFSET(b_sensitivity), AV_OPT_TYPE_INT, {.i64 = 40 }, 1, INT_MAX, FF_MPV_OPT_FLAGS }, \
354 {"brd_scale", "Downscale frames for dynamic B-frame decision", FF_MPV_MAIN_OFFSET(brd_scale), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 3, FF_MPV_OPT_FLAGS },
355
356 #define FF_MPV_COMMON_MOTION_EST_OPTS \
357 { "mv0", "always try a mb with mv=<0,0>", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_MV0 }, 0, 0, FF_MPV_OPT_FLAGS, .unit = "mpv_flags" },\
358 {"motion_est", "motion estimation algorithm", FF_MPV_OFFSET(me.motion_est), AV_OPT_TYPE_INT, {.i64 = FF_ME_EPZS }, FF_ME_ZERO, FF_ME_XONE, FF_MPV_OPT_FLAGS, .unit = "motion_est" }, \
359 { "zero", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_ZERO }, 0, 0, FF_MPV_OPT_FLAGS, .unit = "motion_est" }, \
360 { "epzs", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_EPZS }, 0, 0, FF_MPV_OPT_FLAGS, .unit = "motion_est" }, \
361 { "xone", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_XONE }, 0, 0, FF_MPV_OPT_FLAGS, .unit = "motion_est" }, \
362 {"mepc", "Motion estimation bitrate penalty compensation (1.0 = 256)", FF_MPV_MAIN_OFFSET(me_penalty_compensation), AV_OPT_TYPE_INT, {.i64 = 256 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
363 {"mepre", "pre motion estimation", FF_MPV_MAIN_OFFSET(me_pre), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
364 {"intra_penalty", "Penalty for intra blocks in block decision", FF_MPV_OFFSET(intra_penalty), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX/2, FF_MPV_OPT_FLAGS }, \
365 {"sc_threshold", "Scene change threshold", FF_MPV_MAIN_OFFSET(scenechange_threshold), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS }, \
366
367 extern const AVClass ff_mpv_enc_class;
368
369 int ff_mpv_encode_init(AVCodecContext *avctx);
370
371 int ff_mpv_encode_end(AVCodecContext *avctx);
372 int ff_mpv_encode_picture(AVCodecContext *avctx, AVPacket *pkt,
373 const AVFrame *frame, int *got_packet);
374 int ff_mpv_reallocate_putbitbuffer(MPVEncContext *s, size_t threshold, size_t size_increase);
375
376 void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix);
377
378 void ff_dct_encode_init(MPVEncContext *s);
379 void ff_mpvenc_dct_init_mips(MPVEncContext *s);
380 void ff_dct_encode_init_x86(MPVEncContext *s);
381
382 void ff_convert_matrix(MPVEncContext *s, int (*qmat)[64], uint16_t (*qmat16)[2][64],
383 const uint16_t *quant_matrix, int bias, int qmin, int qmax, int intra);
384
385 void ff_block_permute(int16_t *block, const uint8_t *permutation,
386 const uint8_t *scantable, int last);
387
388 5860810 static inline int get_bits_diff(MPVEncContext *s)
389 {
390 5860810 const int bits = put_bits_count(&s->pb);
391 5860810 const int last = s->last_bits;
392
393 5860810 s->last_bits = bits;
394
395 5860810 return bits - last;
396 }
397
398 #endif
399