1 /*****************************************************************************
2 * x264.h: h264 encoder library
3 *****************************************************************************
4 * Copyright (C) 2003 Laurent Aimar
5 * $Id: x264.h,v 1.1 2004/06/03 19:24:12 fenrir Exp $
7 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
32 * opaque handler for decoder and encoder */
33 typedef struct x264_t x264_t;
35 /****************************************************************************
36 * Initialisation structure and function.
37 ****************************************************************************/
40 #define X264_CPU_MMX 0x000001 /* mmx */
41 #define X264_CPU_MMXEXT 0x000002 /* mmx-ext*/
42 #define X264_CPU_SSE 0x000004 /* sse */
43 #define X264_CPU_SSE2 0x000008 /* sse 2 */
44 #define X264_CPU_3DNOW 0x000010 /* 3dnow! */
45 #define X264_CPU_3DNOWEXT 0x000020 /* 3dnow! ext */
46 #define X264_CPU_ALTIVEC 0x000040 /* altivec */
50 #define X264_ANALYSE_I4x4 0x0001 /* Analyse i4x4 */
51 #define X264_ANALYSE_PSUB16x16 0x0010 /* Analyse p16x8, p8x16 and p8x8 */
52 #define X264_ANALYSE_PSUB8x8 0x0020 /* Analyse p8x4, p4x8, p4x4 */
53 #define X264_ANALYSE_BSUB16x16 0x0100 /* Analyse b16x8, b8x16 and b8x8 */
54 #define X264_DIRECT_PRED_NONE 0
55 #define X264_DIRECT_PRED_SPATIAL 1
56 #define X264_DIRECT_PRED_TEMPORAL 2
63 #define X264_CSP_MASK 0x00ff /* */
64 #define X264_CSP_NONE 0x0000 /* Invalid mode */
65 #define X264_CSP_I420 0x0001 /* yuv 4:2:0 planar */
66 #define X264_CSP_I422 0x0002 /* yuv 4:2:2 planar */
67 #define X264_CSP_I444 0x0003 /* yuv 4:4:4 planar */
68 #define X264_CSP_YV12 0x0004 /* yuv 4:2:0 planar */
69 #define X264_CSP_YUYV 0x0005 /* yuv 4:2:2 packed */
70 #define X264_CSP_RGB 0x0006 /* rgb 24bits */
71 #define X264_CSP_BGR 0x0007 /* bgr 24bits */
72 #define X264_CSP_BGRA 0x0008 /* bgr 32bits */
73 #define X264_CSP_VFLIP 0x1000 /* */
77 #define X264_TYPE_AUTO 0x0000 /* Let x264 choose the right type */
78 #define X264_TYPE_IDR 0x0001
79 #define X264_TYPE_I 0x0002
80 #define X264_TYPE_P 0x0003
81 #define X264_TYPE_BREF 0x0004 /* Non-disposable B-frame */
82 #define X264_TYPE_B 0x0005
83 #define IS_X264_TYPE_I(x) ((x)==X264_TYPE_I || (x)==X264_TYPE_IDR)
84 #define IS_X264_TYPE_B(x) ((x)==X264_TYPE_B || (x)==X264_TYPE_BREF)
88 #define X264_LOG_NONE (-1)
89 #define X264_LOG_ERROR 0
90 #define X264_LOG_WARNING 1
91 #define X264_LOG_INFO 2
92 #define X264_LOG_DEBUG 3
99 /* Video Properties */
102 int i_csp; /* CSP of encoded bitstream, only i420 supported */
107 /* they will be reduced to be 0 < x <= 65535 and prime */
114 int i_maxframes; /* Maximum number of frames to read from input file and encode, 0=unlimited */
116 /* Bitstream parameters */
117 int i_frame_reference; /* Maximum number of reference frames */
118 int i_keyint_max; /* Force an IDR keyframe at this interval */
119 int i_keyint_min; /* Scenecuts closer together than this are coded as I, not IDR. */
120 int i_scenecut_threshold; /* how aggressively to insert extra I frames */
121 int i_bframe; /* how many b-frame between 2 references pictures */
122 int b_bframe_adaptive;
124 int b_bframe_pyramid; /* Keep some B-frames as references */
126 int b_deblocking_filter;
127 int i_deblocking_filter_alphac0; /* [-6, 6] -6 light filter, 6 strong */
128 int i_deblocking_filter_beta; /* [-6, 6] idem */
131 int i_cabac_init_idc;
135 void (*pf_log)( void *, int i_level, const char *psz, va_list );
139 /* Encoder analyser parameters */
142 unsigned int intra; /* intra flags */
143 unsigned int inter; /* inter flags */
145 int i_direct_mv_pred; /* spatial vs temporal mv prediction */
146 int i_me_method; /* motion estimation algorithm to use (X264_ME_*) */
147 int i_me_range; /* integer pixel motion estimation search range (from predicted mv) */
148 int i_subpel_refine; /* subpixel motion estimation quality */
149 int b_chroma_me; /* chroma ME for subpel and mode decision in P-frames */
150 int i_mv_range; /* maximum length of a mv (in pixels) */
152 int b_weighted_bipred; /* implicit weighting for B-frames */
154 int i_chroma_qp_offset;
156 int b_psnr; /* Do we compute PSNR stats (save a few % of cpu) */
159 /* Rate control parameters */
162 int i_qp_constant; /* 1-51 */
163 int i_qp_min; /* min allowed QP value */
164 int i_qp_max; /* max allowed QP value */
165 int i_qp_step; /* max QP step between frames */
167 int b_cbr; /* constant bitrate */
169 int i_rc_buffer_size;
170 int i_rc_init_buffer;
171 int i_rc_sens; /* rate control sensitivity */
176 int b_stat_write; /* Enable stat writing in psz_stat_out */
178 int b_stat_read; /* Read stat from psz_stat_in and use it */
181 /* 2pass params (same than ffmpeg ones) */
182 char *psz_rc_eq; /* 2 pass rate control equation */
183 float f_qcompress; /* 0.0 => cbr, 1.0 => constant qp */
184 float f_qblur; /* temporally blur quants */
185 float f_complexity_blur; /* temporally blur complexity */
188 int b_aud; /* generate access unit delimiters */
191 /* x264_param_default:
192 * fill x264_param_t with default values and do CPU detection */
193 void x264_param_default( x264_param_t * );
195 /****************************************************************************
196 * Picture structures and functions.
197 ****************************************************************************/
209 /* In: force picture type (if not auto) XXX: ignored for now
210 * Out: type of the picture encoded */
212 /* In: force quantizer for > 0 */
214 /* In: user pts, Out: pts of encoded picture (user)*/
221 /* x264_picture_alloc:
222 * alloc data for a picture. You must call x264_picture_clean on it. */
223 void x264_picture_alloc( x264_picture_t *pic, int i_csp, int i_width, int i_height );
225 /* x264_picture_clean:
226 * free associated resource for a x264_picture_t allocated with
227 * x264_picture_alloc ONLY */
228 void x264_picture_clean( x264_picture_t *pic );
230 /****************************************************************************
231 * NAL structure and functions:
232 ****************************************************************************/
241 NAL_SLICE_IDR = 5, /* ref_idc != 0 */
242 NAL_SEI = 6, /* ref_idc == 0 */
246 /* ref_idc == 0 for 6,9,10,11,12 */
250 NAL_PRIORITY_DISPOSABLE = 0,
251 NAL_PRIORITY_LOW = 1,
252 NAL_PRIORITY_HIGH = 2,
253 NAL_PRIORITY_HIGHEST = 3,
258 int i_ref_idc; /* nal_priority_e */
259 int i_type; /* nal_unit_type_e */
261 /* This data are raw payload */
267 * encode a nal into a buffer, setting the size.
268 * if b_annexeb then a long synch work is added
269 * XXX: it currently doesn't check for overflow */
270 int x264_nal_encode( void *, int *, int b_annexeb, x264_nal_t *nal );
273 * decode a buffer nal into a x264_nal_t */
274 int x264_nal_decode( x264_nal_t *nal, void *, int );
276 /****************************************************************************
278 ****************************************************************************/
280 /* x264_encoder_open:
281 * create a new encoder handler, all parameters from x264_param_t are copied */
282 x264_t *x264_encoder_open ( x264_param_t * );
283 /* x264_encoder_headers:
284 * return the SPS and PPS that will be used for the whole stream */
285 int x264_encoder_headers( x264_t *, x264_nal_t **, int * );
286 /* x264_encoder_encode:
287 * encode one picture */
288 int x264_encoder_encode ( x264_t *, x264_nal_t **, int *, x264_picture_t *, x264_picture_t * );
289 /* x264_encoder_close:
290 * close an encoder handler */
291 void x264_encoder_close ( x264_t * );
293 /* XXX: decoder isn't working so no need to export it */
295 /****************************************************************************
297 ****************************************************************************
298 * XXX: Not yet working so do not try ...
299 ****************************************************************************/
300 /* x264_decoder_open:
302 x264_t *x264_decoder_open ( x264_param_t * );
303 /* x264_decoder_decode:
305 int x264_decoder_decode ( x264_t *, x264_picture_t **, x264_nal_t * );
306 /* x264_decoder_close:
308 void x264_decoder_close ( x264_t * );
311 /****************************************************************************
312 * Private stuff for internal usage:
313 ****************************************************************************/
316 # define inline __inline
317 # define DECLARE_ALIGNED( type, var, n ) __declspec(align(n)) type var
319 # define DECLARE_ALIGNED( type, var, n ) type var __attribute__((aligned(n)))