1 /*****************************************************************************
2 * x264.h: h264 encoder library
3 *****************************************************************************
4 * Copyright (C) 2003-2008 x264 Project
6 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
7 * Loren Merritt <lorenm@u.washington.edu>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
22 *****************************************************************************/
27 #if !defined(_STDINT_H) && !defined(_STDINT_H_) && \
28 !defined(_INTTYPES_H) && !defined(_INTTYPES_H_)
30 # pragma message("You must include stdint.h or inttypes.h before x264.h")
32 # warning You must include stdint.h or inttypes.h before x264.h
41 * opaque handler for encoder */
42 typedef struct x264_t x264_t;
44 /****************************************************************************
45 * Initialisation structure and function.
46 ****************************************************************************/
49 #define X264_CPU_CACHELINE_32 0x000001 /* avoid memory loads that span the border between two cachelines */
50 #define X264_CPU_CACHELINE_64 0x000002 /* 32/64 is the size of a cacheline in bytes */
51 #define X264_CPU_ALTIVEC 0x000004
52 #define X264_CPU_MMX 0x000008
53 #define X264_CPU_MMXEXT 0x000010 /* MMX2 aka MMXEXT aka ISSE */
54 #define X264_CPU_SSE 0x000020
55 #define X264_CPU_SSE2 0x000040
56 #define X264_CPU_SSE2_IS_SLOW 0x000080 /* avoid most SSE2 functions on Athlon64 */
57 #define X264_CPU_SSE2_IS_FAST 0x000100 /* a few functions are only faster on Core2 and Phenom */
58 #define X264_CPU_SSE3 0x000200
59 #define X264_CPU_SSSE3 0x000400
60 #define X264_CPU_PHADD_IS_FAST 0x000800 /* pre-Penryn Core2 have a uselessly slow PHADD instruction */
61 #define X264_CPU_STACK_MOD4 0x001000 /* if stack is only mod4 and not mod16 */
62 #define X264_CPU_SSE4 0x002000 /* SSE4.1 */
63 #define X264_CPU_SSE42 0x004000 /* SSE4.2 */
64 #define X264_CPU_SSE_MISALIGN 0x008000 /* Phenom support for misaligned SSE instruction arguments */
65 #define X264_CPU_LZCNT 0x010000 /* Phenom support for "leading zero count" instruction. */
69 #define X264_ANALYSE_I4x4 0x0001 /* Analyse i4x4 */
70 #define X264_ANALYSE_I8x8 0x0002 /* Analyse i8x8 (requires 8x8 transform) */
71 #define X264_ANALYSE_PSUB16x16 0x0010 /* Analyse p16x8, p8x16 and p8x8 */
72 #define X264_ANALYSE_PSUB8x8 0x0020 /* Analyse p8x4, p4x8, p4x4 */
73 #define X264_ANALYSE_BSUB16x16 0x0100 /* Analyse b16x8, b8x16 and b8x8 */
74 #define X264_DIRECT_PRED_NONE 0
75 #define X264_DIRECT_PRED_SPATIAL 1
76 #define X264_DIRECT_PRED_TEMPORAL 2
77 #define X264_DIRECT_PRED_AUTO 3
82 #define X264_ME_TESA 4
83 #define X264_CQM_FLAT 0
84 #define X264_CQM_JVT 1
85 #define X264_CQM_CUSTOM 2
86 #define X264_RC_NONE -1
90 #define X264_AQ_NONE 0
91 #define X264_AQ_VARIANCE 1
92 #define X264_B_ADAPT_NONE 0
93 #define X264_B_ADAPT_FAST 1
94 #define X264_B_ADAPT_TRELLIS 2
96 static const char * const x264_direct_pred_names[] = { "none", "spatial", "temporal", "auto", 0 };
97 static const char * const x264_motion_est_names[] = { "dia", "hex", "umh", "esa", "tesa", 0 };
98 static const char * const x264_overscan_names[] = { "undef", "show", "crop", 0 };
99 static const char * const x264_vidformat_names[] = { "component", "pal", "ntsc", "secam", "mac", "undef", 0 };
100 static const char * const x264_fullrange_names[] = { "off", "on", 0 };
101 static const char * const x264_colorprim_names[] = { "", "bt709", "undef", "", "bt470m", "bt470bg", "smpte170m", "smpte240m", "film", 0 };
102 static const char * const x264_transfer_names[] = { "", "bt709", "undef", "", "bt470m", "bt470bg", "smpte170m", "smpte240m", "linear", "log100", "log316", 0 };
103 static const char * const x264_colmatrix_names[] = { "GBR", "bt709", "undef", "", "fcc", "bt470bg", "smpte170m", "smpte240m", "YCgCo", 0 };
106 * legacy only; nothing other than I420 is really supported.
108 #define X264_CSP_MASK 0x00ff /* */
109 #define X264_CSP_NONE 0x0000 /* Invalid mode */
110 #define X264_CSP_I420 0x0001 /* yuv 4:2:0 planar */
111 #define X264_CSP_I422 0x0002 /* yuv 4:2:2 planar */
112 #define X264_CSP_I444 0x0003 /* yuv 4:4:4 planar */
113 #define X264_CSP_YV12 0x0004 /* yuv 4:2:0 planar */
114 #define X264_CSP_YUYV 0x0005 /* yuv 4:2:2 packed */
115 #define X264_CSP_RGB 0x0006 /* rgb 24bits */
116 #define X264_CSP_BGR 0x0007 /* bgr 24bits */
117 #define X264_CSP_BGRA 0x0008 /* bgr 32bits */
118 #define X264_CSP_MAX 0x0009 /* end of list */
119 #define X264_CSP_VFLIP 0x1000 /* */
123 #define X264_TYPE_AUTO 0x0000 /* Let x264 choose the right type */
124 #define X264_TYPE_IDR 0x0001
125 #define X264_TYPE_I 0x0002
126 #define X264_TYPE_P 0x0003
127 #define X264_TYPE_BREF 0x0004 /* Non-disposable B-frame */
128 #define X264_TYPE_B 0x0005
129 #define IS_X264_TYPE_I(x) ((x)==X264_TYPE_I || (x)==X264_TYPE_IDR)
130 #define IS_X264_TYPE_B(x) ((x)==X264_TYPE_B || (x)==X264_TYPE_BREF)
134 #define X264_LOG_NONE (-1)
135 #define X264_LOG_ERROR 0
136 #define X264_LOG_WARNING 1
137 #define X264_LOG_INFO 2
138 #define X264_LOG_DEBUG 3
140 /* Zones: override ratecontrol or other options for specific sections of the video.
141 * See x264_encoder_reconfig() for which options can be changed.
142 * If zones overlap, whichever comes later in the list takes precedence. */
145 int i_start, i_end; /* range of frame numbers */
146 int b_force_qp; /* whether to use qp vs bitrate factor */
148 float f_bitrate_factor;
149 struct x264_param_t *param;
152 typedef struct x264_param_t
156 int i_threads; /* encode multiple frames in parallel */
157 int b_deterministic; /* whether to allow non-deterministic optimizations when threaded */
159 /* Video Properties */
162 int i_csp; /* CSP of encoded bitstream, only i420 supported */
164 int i_frame_total; /* number of frames to encode if known, else 0 */
168 /* they will be reduced to be 0 < x <= 65535 and prime */
172 int i_overscan; /* 0=undef, 1=no overscan, 2=overscan */
174 /* see h264 annex E for the values of the following */
180 int i_chroma_loc; /* both top & bottom */
186 /* Bitstream parameters */
187 int i_frame_reference; /* Maximum number of reference frames */
188 int i_keyint_max; /* Force an IDR keyframe at this interval */
189 int i_keyint_min; /* Scenecuts closer together than this are coded as I, not IDR. */
190 int i_scenecut_threshold; /* how aggressively to insert extra I frames */
191 int b_pre_scenecut; /* compute scenecut on lowres frames */
192 int i_bframe; /* how many b-frame between 2 references pictures */
193 int i_bframe_adaptive;
195 int b_bframe_pyramid; /* Keep some B-frames as references */
197 int b_deblocking_filter;
198 int i_deblocking_filter_alphac0; /* [-6, 6] -6 light filter, 6 strong */
199 int i_deblocking_filter_beta; /* [-6, 6] idem */
202 int i_cabac_init_idc;
207 char *psz_cqm_file; /* JM format */
208 uint8_t cqm_4iy[16]; /* used only if i_cqm_preset == X264_CQM_CUSTOM */
216 void (*pf_log)( void *, int i_level, const char *psz, va_list );
220 char *psz_dump_yuv; /* filename for reconstructed frames */
222 /* Encoder analyser parameters */
225 unsigned int intra; /* intra partitions */
226 unsigned int inter; /* inter partitions */
229 int b_weighted_bipred; /* implicit weighting for B-frames */
230 int i_direct_mv_pred; /* spatial vs temporal mv prediction */
231 int i_chroma_qp_offset;
233 int i_me_method; /* motion estimation algorithm to use (X264_ME_*) */
234 int i_me_range; /* integer pixel motion estimation search range (from predicted mv) */
235 int i_mv_range; /* maximum length of a mv (in pixels). -1 = auto, based on level */
236 int i_mv_range_thread; /* minimum space between threads. -1 = auto, based on number of threads. */
237 int i_subpel_refine; /* subpixel motion estimation quality */
238 int b_chroma_me; /* chroma ME for subpel and mode decision in P-frames */
239 int b_mixed_references; /* allow each mb partition in P-frames to have it's own reference number */
240 int i_trellis; /* trellis RD quantization */
241 int b_fast_pskip; /* early SKIP detection on P-frames */
242 int b_dct_decimate; /* transform coefficient thresholding on P-frames */
243 int i_noise_reduction; /* adaptive pseudo-deadzone */
244 float f_psy_rd; /* Psy RD strength */
245 float f_psy_trellis; /* Psy trellis strength */
247 /* the deadzone size that will be used in luma quantization */
248 int i_luma_deadzone[2]; /* {inter, intra} */
250 int b_psnr; /* compute and print PSNR stats */
251 int b_ssim; /* compute and print SSIM stats */
254 /* Rate control parameters */
257 int i_rc_method; /* X264_RC_* */
259 int i_qp_constant; /* 0-51 */
260 int i_qp_min; /* min allowed QP value */
261 int i_qp_max; /* max allowed QP value */
262 int i_qp_step; /* max QP step between frames */
265 float f_rf_constant; /* 1pass VBR, nominal QP */
266 float f_rate_tolerance;
267 int i_vbv_max_bitrate;
268 int i_vbv_buffer_size;
269 float f_vbv_buffer_init; /* <=1: fraction of buffer_size. >1: kbit */
273 int i_aq_mode; /* psy adaptive QP. (X264_AQ_*) */
277 int b_stat_write; /* Enable stat writing in psz_stat_out */
279 int b_stat_read; /* Read stat from psz_stat_in and use it */
282 /* 2pass params (same as ffmpeg ones) */
283 float f_qcompress; /* 0.0 => cbr, 1.0 => constant qp */
284 float f_qblur; /* temporally blur quants */
285 float f_complexity_blur; /* temporally blur complexity */
286 x264_zone_t *zones; /* ratecontrol overrides */
287 int i_zones; /* number of zone_t's */
288 char *psz_zones; /* alternate method of specifying zones */
291 /* Muxing parameters */
292 int b_aud; /* generate access unit delimiters */
293 int b_repeat_headers; /* put SPS/PPS before each keyframe */
294 int i_sps_id; /* SPS and PPS id number */
299 int mbps; /* max macroblock processing rate (macroblocks/sec) */
300 int frame_size; /* max frame size (macroblocks) */
301 int dpb; /* max decoded picture buffer (bytes) */
302 int bitrate; /* max bitrate (kbit/sec) */
303 int cpb; /* max vbv buffer (kbit) */
304 int mv_range; /* max vertical mv component range (pixels) */
305 int mvs_per_2mb; /* max mvs per 2 consecutive mbs. */
306 int slice_rate; /* ?? */
307 int bipred8x8; /* limit bipred to >=8x8 */
308 int direct8x8; /* limit b_direct to >=8x8 */
309 int frame_only; /* forbid interlacing */
312 /* all of the levels defined in the standard, terminated by .level_idc=0 */
313 extern const x264_level_t x264_levels[];
315 /* x264_param_default:
316 * fill x264_param_t with default values and do CPU detection */
317 void x264_param_default( x264_param_t * );
320 * set one parameter by name.
321 * returns 0 on success, or returns one of the following errors.
322 * note: BAD_VALUE occurs only if it can't even parse the value,
323 * numerical range is not checked until x264_encoder_open() or
324 * x264_encoder_reconfig().
325 * value=NULL means "true" for boolean options, but is a BAD_VALUE for non-booleans. */
326 #define X264_PARAM_BAD_NAME (-1)
327 #define X264_PARAM_BAD_VALUE (-2)
328 int x264_param_parse( x264_param_t *, const char *name, const char *value );
330 /****************************************************************************
331 * Picture structures and functions.
332 ****************************************************************************/
344 /* In: force picture type (if not auto)
345 * If x264 encoding parameters are violated in the forcing of picture types,
346 * x264 will correct the input picture type and log a warning.
347 * The quality of frametype decisions may suffer if a great deal of fine-grained
348 * mixing of auto and forced frametypes is done.
349 * Out: type of the picture encoded */
351 /* In: force quantizer for > 0 */
353 /* In: user pts, Out: pts of encoded picture (user)*/
360 /* x264_picture_alloc:
361 * alloc data for a picture. You must call x264_picture_clean on it. */
362 void x264_picture_alloc( x264_picture_t *pic, int i_csp, int i_width, int i_height );
364 /* x264_picture_clean:
365 * free associated resource for a x264_picture_t allocated with
366 * x264_picture_alloc ONLY */
367 void x264_picture_clean( x264_picture_t *pic );
369 /****************************************************************************
370 * NAL structure and functions:
371 ****************************************************************************/
380 NAL_SLICE_IDR = 5, /* ref_idc != 0 */
381 NAL_SEI = 6, /* ref_idc == 0 */
385 /* ref_idc == 0 for 6,9,10,11,12 */
389 NAL_PRIORITY_DISPOSABLE = 0,
390 NAL_PRIORITY_LOW = 1,
391 NAL_PRIORITY_HIGH = 2,
392 NAL_PRIORITY_HIGHEST = 3,
397 int i_ref_idc; /* nal_priority_e */
398 int i_type; /* nal_unit_type_e */
400 /* This data are raw payload */
406 * encode a nal into a buffer, setting the size.
407 * if b_annexeb then a long synch work is added
408 * XXX: it currently doesn't check for overflow */
409 int x264_nal_encode( void *, int *, int b_annexeb, x264_nal_t *nal );
411 /****************************************************************************
413 ****************************************************************************/
415 /* x264_encoder_open:
416 * create a new encoder handler, all parameters from x264_param_t are copied */
417 x264_t *x264_encoder_open ( x264_param_t * );
418 /* x264_encoder_reconfig:
419 * change encoder options while encoding,
420 * analysis-related parameters from x264_param_t are copied */
421 int x264_encoder_reconfig( x264_t *, x264_param_t * );
422 /* x264_encoder_headers:
423 * return the SPS and PPS that will be used for the whole stream */
424 int x264_encoder_headers( x264_t *, x264_nal_t **, int * );
425 /* x264_encoder_encode:
426 * encode one picture */
427 int x264_encoder_encode ( x264_t *, x264_nal_t **, int *, x264_picture_t *, x264_picture_t * );
428 /* x264_encoder_close:
429 * close an encoder handler */
430 void x264_encoder_close ( x264_t * );