typo fix: inited --> initialized
[libav.git] / libavcodec / utils.c
1 /*
2 * utils for libavcodec
3 * Copyright (c) 2001 Fabrice Bellard.
4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
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 utils.c
25 * utils.
26 */
27
28 #include "avcodec.h"
29 #include "dsputil.h"
30 #include "mpegvideo.h"
31 #include "integer.h"
32 #include "opt.h"
33 #include "crc.h"
34 #include <stdarg.h>
35 #include <limits.h>
36 #include <float.h>
37 #if !defined(HAVE_MKSTEMP)
38 #include <fcntl.h>
39 #endif
40
41 const uint8_t ff_reverse[256]={
42 0x00,0x80,0x40,0xC0,0x20,0xA0,0x60,0xE0,0x10,0x90,0x50,0xD0,0x30,0xB0,0x70,0xF0,
43 0x08,0x88,0x48,0xC8,0x28,0xA8,0x68,0xE8,0x18,0x98,0x58,0xD8,0x38,0xB8,0x78,0xF8,
44 0x04,0x84,0x44,0xC4,0x24,0xA4,0x64,0xE4,0x14,0x94,0x54,0xD4,0x34,0xB4,0x74,0xF4,
45 0x0C,0x8C,0x4C,0xCC,0x2C,0xAC,0x6C,0xEC,0x1C,0x9C,0x5C,0xDC,0x3C,0xBC,0x7C,0xFC,
46 0x02,0x82,0x42,0xC2,0x22,0xA2,0x62,0xE2,0x12,0x92,0x52,0xD2,0x32,0xB2,0x72,0xF2,
47 0x0A,0x8A,0x4A,0xCA,0x2A,0xAA,0x6A,0xEA,0x1A,0x9A,0x5A,0xDA,0x3A,0xBA,0x7A,0xFA,
48 0x06,0x86,0x46,0xC6,0x26,0xA6,0x66,0xE6,0x16,0x96,0x56,0xD6,0x36,0xB6,0x76,0xF6,
49 0x0E,0x8E,0x4E,0xCE,0x2E,0xAE,0x6E,0xEE,0x1E,0x9E,0x5E,0xDE,0x3E,0xBE,0x7E,0xFE,
50 0x01,0x81,0x41,0xC1,0x21,0xA1,0x61,0xE1,0x11,0x91,0x51,0xD1,0x31,0xB1,0x71,0xF1,
51 0x09,0x89,0x49,0xC9,0x29,0xA9,0x69,0xE9,0x19,0x99,0x59,0xD9,0x39,0xB9,0x79,0xF9,
52 0x05,0x85,0x45,0xC5,0x25,0xA5,0x65,0xE5,0x15,0x95,0x55,0xD5,0x35,0xB5,0x75,0xF5,
53 0x0D,0x8D,0x4D,0xCD,0x2D,0xAD,0x6D,0xED,0x1D,0x9D,0x5D,0xDD,0x3D,0xBD,0x7D,0xFD,
54 0x03,0x83,0x43,0xC3,0x23,0xA3,0x63,0xE3,0x13,0x93,0x53,0xD3,0x33,0xB3,0x73,0xF3,
55 0x0B,0x8B,0x4B,0xCB,0x2B,0xAB,0x6B,0xEB,0x1B,0x9B,0x5B,0xDB,0x3B,0xBB,0x7B,0xFB,
56 0x07,0x87,0x47,0xC7,0x27,0xA7,0x67,0xE7,0x17,0x97,0x57,0xD7,0x37,0xB7,0x77,0xF7,
57 0x0F,0x8F,0x4F,0xCF,0x2F,0xAF,0x6F,0xEF,0x1F,0x9F,0x5F,0xDF,0x3F,0xBF,0x7F,0xFF,
58 };
59
60 static int volatile entangled_thread_counter=0;
61
62 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size)
63 {
64 if(min_size < *size)
65 return ptr;
66
67 *size= FFMAX(17*min_size/16 + 32, min_size);
68
69 return av_realloc(ptr, *size);
70 }
71
72 static unsigned int last_static = 0;
73 static unsigned int allocated_static = 0;
74 static void** array_static = NULL;
75
76 void *av_mallocz_static(unsigned int size)
77 {
78 void *ptr = av_mallocz(size);
79
80 if(ptr){
81 array_static =av_fast_realloc(array_static, &allocated_static, sizeof(void*)*(last_static+1));
82 if(!array_static)
83 return NULL;
84 array_static[last_static++] = ptr;
85 }
86
87 return ptr;
88 }
89
90 void *ff_realloc_static(void *ptr, unsigned int size)
91 {
92 int i;
93 if(!ptr)
94 return av_mallocz_static(size);
95 /* Look for the old ptr */
96 for(i = 0; i < last_static; i++) {
97 if(array_static[i] == ptr) {
98 array_static[i] = av_realloc(array_static[i], size);
99 return array_static[i];
100 }
101 }
102 return NULL;
103
104 }
105
106 void av_free_static(void)
107 {
108 while(last_static){
109 av_freep(&array_static[--last_static]);
110 }
111 av_freep(&array_static);
112 }
113
114 /**
115 * Call av_free_static automatically before it's too late
116 */
117
118 static void do_free(void) __attribute__ ((destructor));
119
120 static void do_free(void)
121 {
122 av_free_static();
123 }
124
125
126 /* encoder management */
127 AVCodec *first_avcodec = NULL;
128
129 AVCodec *av_codec_next(AVCodec *c){
130 if(c) return c->next;
131 else return first_avcodec;
132 }
133
134 void register_avcodec(AVCodec *format)
135 {
136 AVCodec **p;
137 p = &first_avcodec;
138 while (*p != NULL) p = &(*p)->next;
139 *p = format;
140 format->next = NULL;
141 }
142
143 void avcodec_set_dimensions(AVCodecContext *s, int width, int height){
144 s->coded_width = width;
145 s->coded_height= height;
146 s->width = -((-width )>>s->lowres);
147 s->height= -((-height)>>s->lowres);
148 }
149
150 typedef struct InternalBuffer{
151 int last_pic_num;
152 uint8_t *base[4];
153 uint8_t *data[4];
154 int linesize[4];
155 int width, height;
156 enum PixelFormat pix_fmt;
157 }InternalBuffer;
158
159 #define INTERNAL_BUFFER_SIZE 32
160
161 #define ALIGN(x, a) (((x)+(a)-1)&~((a)-1))
162
163 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
164 int w_align= 1;
165 int h_align= 1;
166
167 switch(s->pix_fmt){
168 case PIX_FMT_YUV420P:
169 case PIX_FMT_YUYV422:
170 case PIX_FMT_UYVY422:
171 case PIX_FMT_YUV422P:
172 case PIX_FMT_YUV444P:
173 case PIX_FMT_GRAY8:
174 case PIX_FMT_GRAY16BE:
175 case PIX_FMT_GRAY16LE:
176 case PIX_FMT_YUVJ420P:
177 case PIX_FMT_YUVJ422P:
178 case PIX_FMT_YUVJ444P:
179 case PIX_FMT_YUVA420P:
180 w_align= 16; //FIXME check for non mpeg style codecs and use less alignment
181 h_align= 16;
182 break;
183 case PIX_FMT_YUV411P:
184 case PIX_FMT_UYYVYY411:
185 w_align=32;
186 h_align=8;
187 break;
188 case PIX_FMT_YUV410P:
189 if(s->codec_id == CODEC_ID_SVQ1){
190 w_align=64;
191 h_align=64;
192 }
193 case PIX_FMT_RGB555:
194 if(s->codec_id == CODEC_ID_RPZA){
195 w_align=4;
196 h_align=4;
197 }
198 case PIX_FMT_PAL8:
199 if(s->codec_id == CODEC_ID_SMC){
200 w_align=4;
201 h_align=4;
202 }
203 break;
204 case PIX_FMT_BGR24:
205 if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
206 w_align=4;
207 h_align=4;
208 }
209 break;
210 default:
211 w_align= 1;
212 h_align= 1;
213 break;
214 }
215
216 *width = ALIGN(*width , w_align);
217 *height= ALIGN(*height, h_align);
218 }
219
220 int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h){
221 if((int)w>0 && (int)h>0 && (w+128)*(uint64_t)(h+128) < INT_MAX/4)
222 return 0;
223
224 av_log(av_log_ctx, AV_LOG_ERROR, "picture size invalid (%ux%u)\n", w, h);
225 return -1;
226 }
227
228 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){
229 int i;
230 int w= s->width;
231 int h= s->height;
232 InternalBuffer *buf;
233 int *picture_number;
234
235 if(pic->data[0]!=NULL) {
236 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
237 return -1;
238 }
239 if(s->internal_buffer_count >= INTERNAL_BUFFER_SIZE) {
240 av_log(s, AV_LOG_ERROR, "internal_buffer_count overflow (missing release_buffer?)\n");
241 return -1;
242 }
243
244 if(avcodec_check_dimensions(s,w,h))
245 return -1;
246
247 if(s->internal_buffer==NULL){
248 s->internal_buffer= av_mallocz(INTERNAL_BUFFER_SIZE*sizeof(InternalBuffer));
249 }
250 #if 0
251 s->internal_buffer= av_fast_realloc(
252 s->internal_buffer,
253 &s->internal_buffer_size,
254 sizeof(InternalBuffer)*FFMAX(99, s->internal_buffer_count+1)/*FIXME*/
255 );
256 #endif
257
258 buf= &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
259 picture_number= &(((InternalBuffer*)s->internal_buffer)[INTERNAL_BUFFER_SIZE-1]).last_pic_num; //FIXME ugly hack
260 (*picture_number)++;
261
262 if(buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)){
263 for(i=0; i<4; i++){
264 av_freep(&buf->base[i]);
265 buf->data[i]= NULL;
266 }
267 }
268
269 if(buf->base[0]){
270 pic->age= *picture_number - buf->last_pic_num;
271 buf->last_pic_num= *picture_number;
272 }else{
273 int h_chroma_shift, v_chroma_shift;
274 int pixel_size, size[4];
275 AVPicture picture;
276
277 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
278
279 avcodec_align_dimensions(s, &w, &h);
280
281 if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
282 w+= EDGE_WIDTH*2;
283 h+= EDGE_WIDTH*2;
284 }
285 avcodec_align_dimensions(s, &w, &h);
286
287 avpicture_fill(&picture, NULL, s->pix_fmt, w, h);
288 pixel_size= picture.linesize[0]*8 / w;
289 //av_log(NULL, AV_LOG_ERROR, "%d %d %d %d\n", (int)picture.data[1], w, h, s->pix_fmt);
290 assert(pixel_size>=1);
291 //FIXME next ensures that linesize= 2^x uvlinesize, that is needed because some MC code assumes it
292 if(pixel_size == 3*8)
293 w= ALIGN(w, STRIDE_ALIGN<<h_chroma_shift);
294 else
295 w= ALIGN(pixel_size*w, STRIDE_ALIGN<<(h_chroma_shift+3)) / pixel_size;
296 size[1] = avpicture_fill(&picture, NULL, s->pix_fmt, w, h);
297 size[0] = picture.linesize[0] * h;
298 size[1] -= size[0];
299 size[2] = size[3] = 0;
300 if(picture.data[2])
301 size[1]= size[2]= size[1]/2;
302 if(picture.data[3])
303 size[3] = picture.linesize[3] * h;
304
305 buf->last_pic_num= -256*256*256*64;
306 memset(buf->base, 0, sizeof(buf->base));
307 memset(buf->data, 0, sizeof(buf->data));
308
309 for(i=0; i<4 && size[i]; i++){
310 const int h_shift= i==0 ? 0 : h_chroma_shift;
311 const int v_shift= i==0 ? 0 : v_chroma_shift;
312
313 buf->linesize[i]= picture.linesize[i];
314
315 buf->base[i]= av_malloc(size[i]+16); //FIXME 16
316 if(buf->base[i]==NULL) return -1;
317 memset(buf->base[i], 128, size[i]);
318
319 // no edge if EDEG EMU or not planar YUV, we check for PAL8 redundantly to protect against a exploitable bug regression ...
320 if((s->flags&CODEC_FLAG_EMU_EDGE) || (s->pix_fmt == PIX_FMT_PAL8) || !size[2])
321 buf->data[i] = buf->base[i];
322 else
323 buf->data[i] = buf->base[i] + ALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift), STRIDE_ALIGN);
324 }
325 buf->width = s->width;
326 buf->height = s->height;
327 buf->pix_fmt= s->pix_fmt;
328 pic->age= 256*256*256*64;
329 }
330 pic->type= FF_BUFFER_TYPE_INTERNAL;
331
332 for(i=0; i<4; i++){
333 pic->base[i]= buf->base[i];
334 pic->data[i]= buf->data[i];
335 pic->linesize[i]= buf->linesize[i];
336 }
337 s->internal_buffer_count++;
338
339 return 0;
340 }
341
342 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
343 int i;
344 InternalBuffer *buf, *last;
345
346 assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
347 assert(s->internal_buffer_count);
348
349 buf = NULL; /* avoids warning */
350 for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize
351 buf= &((InternalBuffer*)s->internal_buffer)[i];
352 if(buf->data[0] == pic->data[0])
353 break;
354 }
355 assert(i < s->internal_buffer_count);
356 s->internal_buffer_count--;
357 last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
358
359 FFSWAP(InternalBuffer, *buf, *last);
360
361 for(i=0; i<4; i++){
362 pic->data[i]=NULL;
363 // pic->base[i]=NULL;
364 }
365 //printf("R%X\n", pic->opaque);
366 }
367
368 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
369 AVFrame temp_pic;
370 int i;
371
372 /* If no picture return a new buffer */
373 if(pic->data[0] == NULL) {
374 /* We will copy from buffer, so must be readable */
375 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
376 return s->get_buffer(s, pic);
377 }
378
379 /* If internal buffer type return the same buffer */
380 if(pic->type == FF_BUFFER_TYPE_INTERNAL)
381 return 0;
382
383 /*
384 * Not internal type and reget_buffer not overridden, emulate cr buffer
385 */
386 temp_pic = *pic;
387 for(i = 0; i < 4; i++)
388 pic->data[i] = pic->base[i] = NULL;
389 pic->opaque = NULL;
390 /* Allocate new frame */
391 if (s->get_buffer(s, pic))
392 return -1;
393 /* Copy image data from old buffer to new buffer */
394 av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
395 s->height);
396 s->release_buffer(s, &temp_pic); // Release old frame
397 return 0;
398 }
399
400 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count){
401 int i;
402
403 for(i=0; i<count; i++){
404 int r= func(c, arg[i]);
405 if(ret) ret[i]= r;
406 }
407 return 0;
408 }
409
410 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt){
411 return fmt[0];
412 }
413
414 static const char* context_to_name(void* ptr) {
415 AVCodecContext *avc= ptr;
416
417 if(avc && avc->codec && avc->codec->name)
418 return avc->codec->name;
419 else
420 return "NULL";
421 }
422
423 #define OFFSET(x) offsetof(AVCodecContext,x)
424 #define DEFAULT 0 //should be NAN but it does not work as it is not a constant in glibc as required by ANSI/ISO C
425 //these names are too long to be readable
426 #define V AV_OPT_FLAG_VIDEO_PARAM
427 #define A AV_OPT_FLAG_AUDIO_PARAM
428 #define S AV_OPT_FLAG_SUBTITLE_PARAM
429 #define E AV_OPT_FLAG_ENCODING_PARAM
430 #define D AV_OPT_FLAG_DECODING_PARAM
431
432 #define AV_CODEC_DEFAULT_BITRATE 200*1000
433
434 static const AVOption options[]={
435 {"b", "set bitrate (in bits/s)", OFFSET(bit_rate), FF_OPT_TYPE_INT, AV_CODEC_DEFAULT_BITRATE, INT_MIN, INT_MAX, V|E},
436 {"ab", "set bitrate (in bits/s)", OFFSET(bit_rate), FF_OPT_TYPE_INT, 64*1000, INT_MIN, INT_MAX, A|E},
437 {"bt", "set video bitrate tolerance (in bits/s)", OFFSET(bit_rate_tolerance), FF_OPT_TYPE_INT, AV_CODEC_DEFAULT_BITRATE*20, 1, INT_MAX, V|E},
438 {"flags", NULL, OFFSET(flags), FF_OPT_TYPE_FLAGS, DEFAULT, INT_MIN, INT_MAX, V|A|E|D, "flags"},
439 {"mv4", "use four motion vector by macroblock (mpeg4)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_4MV, INT_MIN, INT_MAX, V|E, "flags"},
440 {"obmc", "use overlapped block motion compensation (h263+)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_OBMC, INT_MIN, INT_MAX, V|E, "flags"},
441 {"qpel", "use 1/4 pel motion compensation", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_QPEL, INT_MIN, INT_MAX, V|E, "flags"},
442 {"loop", "use loop filter", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_LOOP_FILTER, INT_MIN, INT_MAX, V|E, "flags"},
443 {"qscale", "use fixed qscale", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_QSCALE, INT_MIN, INT_MAX, 0, "flags"},
444 {"gmc", "use gmc", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_GMC, INT_MIN, INT_MAX, V|E, "flags"},
445 {"mv0", "always try a mb with mv=<0,0>", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_MV0, INT_MIN, INT_MAX, V|E, "flags"},
446 {"part", "use data partitioning", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PART, INT_MIN, INT_MAX, V|E, "flags"},
447 {"input_preserved", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG_INPUT_PRESERVED, INT_MIN, INT_MAX, 0, "flags"},
448 {"pass1", "use internal 2pass ratecontrol in first pass mode", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PASS1, INT_MIN, INT_MAX, 0, "flags"},
449 {"pass2", "use internal 2pass ratecontrol in second pass mode", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PASS2, INT_MIN, INT_MAX, 0, "flags"},
450 {"extern_huff", "use external huffman table (for mjpeg)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_EXTERN_HUFF, INT_MIN, INT_MAX, 0, "flags"},
451 {"gray", "only decode/encode grayscale", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_GRAY, INT_MIN, INT_MAX, V|E|D, "flags"},
452 {"emu_edge", "don't draw edges", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_EMU_EDGE, INT_MIN, INT_MAX, 0, "flags"},
453 {"psnr", "error[?] variables will be set during encoding", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PSNR, INT_MIN, INT_MAX, V|E, "flags"},
454 {"truncated", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG_TRUNCATED, INT_MIN, INT_MAX, 0, "flags"},
455 {"naq", "normalize adaptive quantization", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_NORMALIZE_AQP, INT_MIN, INT_MAX, V|E, "flags"},
456 {"ildct", "use interlaced dct", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_INTERLACED_DCT, INT_MIN, INT_MAX, V|E, "flags"},
457 {"low_delay", "force low delay", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_LOW_DELAY, INT_MIN, INT_MAX, V|D|E, "flags"},
458 {"alt", "enable alternate scantable (mpeg2/mpeg4)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_ALT_SCAN, INT_MIN, INT_MAX, V|E, "flags"},
459 {"trell", "use trellis quantization", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_TRELLIS_QUANT, INT_MIN, INT_MAX, V|E, "flags"},
460 {"global_header", "place global headers in extradata instead of every keyframe", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_GLOBAL_HEADER, INT_MIN, INT_MAX, 0, "flags"},
461 {"bitexact", "use only bitexact stuff (except (i)dct)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_BITEXACT, INT_MIN, INT_MAX, A|V|S|D|E, "flags"},
462 {"aic", "h263 advanced intra coding / mpeg4 ac prediction", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_AC_PRED, INT_MIN, INT_MAX, V|E, "flags"},
463 {"umv", "use unlimited motion vectors", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_H263P_UMV, INT_MIN, INT_MAX, V|E, "flags"},
464 {"cbp", "use rate distortion optimization for cbp", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_CBP_RD, INT_MIN, INT_MAX, V|E, "flags"},
465 {"qprd", "use rate distortion optimization for qp selection", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_QP_RD, INT_MIN, INT_MAX, V|E, "flags"},
466 {"aiv", "h263 alternative inter vlc", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_H263P_AIV, INT_MIN, INT_MAX, V|E, "flags"},
467 {"slice", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG_H263P_SLICE_STRUCT, INT_MIN, INT_MAX, V|E, "flags"},
468 {"ilme", "interlaced motion estimation", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_INTERLACED_ME, INT_MIN, INT_MAX, V|E, "flags"},
469 {"scan_offset", "will reserve space for svcd scan offset user data", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_SVCD_SCAN_OFFSET, INT_MIN, INT_MAX, V|E, "flags"},
470 {"cgop", "closed gop", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_CLOSED_GOP, INT_MIN, INT_MAX, V|E, "flags"},
471 {"fast", "allow non spec compliant speedup tricks", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_FAST, INT_MIN, INT_MAX, V|E, "flags2"},
472 {"sgop", "strictly enforce gop size", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_STRICT_GOP, INT_MIN, INT_MAX, V|E, "flags2"},
473 {"noout", "skip bitstream encoding", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_NO_OUTPUT, INT_MIN, INT_MAX, V|E, "flags2"},
474 {"local_header", "place global headers at every keyframe instead of in extradata", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_LOCAL_HEADER, INT_MIN, INT_MAX, V|E, "flags2"},
475 {"sub_id", NULL, OFFSET(sub_id), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
476 {"me_method", "set motion estimation method", OFFSET(me_method), FF_OPT_TYPE_INT, ME_EPZS, INT_MIN, INT_MAX, V|E, "me_method"},
477 #if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
478 {"me", "set motion estimation method (deprecated, use me_method instead)", OFFSET(me_method), FF_OPT_TYPE_INT, ME_EPZS, INT_MIN, INT_MAX, V|E, "me_method"},
479 #endif
480 {"zero", "zero motion estimation (fastest)", 0, FF_OPT_TYPE_CONST, ME_ZERO, INT_MIN, INT_MAX, V|E, "me_method" },
481 {"full", "full motion estimation (slowest)", 0, FF_OPT_TYPE_CONST, ME_FULL, INT_MIN, INT_MAX, V|E, "me_method" },
482 {"epzs", "EPZS motion estimation (default)", 0, FF_OPT_TYPE_CONST, ME_EPZS, INT_MIN, INT_MAX, V|E, "me_method" },
483 {"log", "log motion estimation", 0, FF_OPT_TYPE_CONST, ME_LOG, INT_MIN, INT_MAX, V|E, "me_method" },
484 {"phods", "phods motion estimation", 0, FF_OPT_TYPE_CONST, ME_PHODS, INT_MIN, INT_MAX, V|E, "me_method" },
485 {"x1", "X1 motion estimation", 0, FF_OPT_TYPE_CONST, ME_X1, INT_MIN, INT_MAX, V|E, "me_method" },
486 {"hex", "hex motion estimation", 0, FF_OPT_TYPE_CONST, ME_HEX, INT_MIN, INT_MAX, V|E, "me_method" },
487 {"umh", "umh motion estimation", 0, FF_OPT_TYPE_CONST, ME_UMH, INT_MIN, INT_MAX, V|E, "me_method" },
488 {"iter", "iter motion estimation", 0, FF_OPT_TYPE_CONST, ME_ITER, INT_MIN, INT_MAX, V|E, "me_method" },
489 {"extradata_size", NULL, OFFSET(extradata_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
490 {"time_base", NULL, OFFSET(time_base), FF_OPT_TYPE_RATIONAL, DEFAULT, INT_MIN, INT_MAX},
491 {"g", "set the group of picture size", OFFSET(gop_size), FF_OPT_TYPE_INT, 12, INT_MIN, INT_MAX, V|E},
492 {"rate_emu", "frame rate emulation", OFFSET(rate_emu), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
493 {"ar", "set audio sampling rate (in Hz)", OFFSET(sample_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
494 {"ac", "set number of audio channels", OFFSET(channels), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
495 {"cutoff", "set cutoff bandwidth", OFFSET(cutoff), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, A|E},
496 {"frame_size", NULL, OFFSET(frame_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, A|E},
497 {"frame_number", NULL, OFFSET(frame_number), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
498 {"real_pict_num", NULL, OFFSET(real_pict_num), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
499 {"delay", NULL, OFFSET(delay), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
500 {"qcomp", "video quantizer scale compression (VBR)", OFFSET(qcompress), FF_OPT_TYPE_FLOAT, 0.5, FLT_MIN, FLT_MAX, V|E},
501 {"qblur", "video quantizer scale blur (VBR)", OFFSET(qblur), FF_OPT_TYPE_FLOAT, 0.5, FLT_MIN, FLT_MAX, V|E},
502 {"qmin", "min video quantizer scale (VBR)", OFFSET(qmin), FF_OPT_TYPE_INT, 2, 1, 51, V|E},
503 {"qmax", "max video quantizer scale (VBR)", OFFSET(qmax), FF_OPT_TYPE_INT, 31, 1, 51, V|E},
504 {"qdiff", "max difference between the quantizer scale (VBR)", OFFSET(max_qdiff), FF_OPT_TYPE_INT, 3, INT_MIN, INT_MAX, V|E},
505 {"bf", "use 'frames' B frames", OFFSET(max_b_frames), FF_OPT_TYPE_INT, DEFAULT, 0, FF_MAX_B_FRAMES, V|E},
506 {"b_qfactor", "qp factor between p and b frames", OFFSET(b_quant_factor), FF_OPT_TYPE_FLOAT, 1.25, FLT_MIN, FLT_MAX, V|E},
507 {"rc_strategy", "ratecontrol method", OFFSET(rc_strategy), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
508 {"b_strategy", "strategy to choose between I/P/B-frames", OFFSET(b_frame_strategy), FF_OPT_TYPE_INT, 0, INT_MIN, INT_MAX, V|E},
509 {"hurry_up", NULL, OFFSET(hurry_up), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
510 #if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
511 {"rtp_mode", NULL, OFFSET(rtp_mode), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
512 #endif
513 {"ps", "rtp payload size in bits", OFFSET(rtp_payload_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
514 {"mv_bits", NULL, OFFSET(mv_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
515 {"header_bits", NULL, OFFSET(header_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
516 {"i_tex_bits", NULL, OFFSET(i_tex_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
517 {"p_tex_bits", NULL, OFFSET(p_tex_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
518 {"i_count", NULL, OFFSET(i_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
519 {"p_count", NULL, OFFSET(p_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
520 {"skip_count", NULL, OFFSET(skip_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
521 {"misc_bits", NULL, OFFSET(misc_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
522 {"frame_bits", NULL, OFFSET(frame_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
523 {"codec_tag", NULL, OFFSET(codec_tag), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
524 {"bug", "workaround not auto detected encoder bugs", OFFSET(workaround_bugs), FF_OPT_TYPE_FLAGS, FF_BUG_AUTODETECT, INT_MIN, INT_MAX, V|D, "bug"},
525 {"autodetect", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_AUTODETECT, INT_MIN, INT_MAX, V|D, "bug"},
526 {"old_msmpeg4", "some old lavc generated msmpeg4v3 files (no autodetection)", 0, FF_OPT_TYPE_CONST, FF_BUG_OLD_MSMPEG4, INT_MIN, INT_MAX, V|D, "bug"},
527 {"xvid_ilace", "Xvid interlacing bug (autodetected if fourcc==XVIX)", 0, FF_OPT_TYPE_CONST, FF_BUG_XVID_ILACE, INT_MIN, INT_MAX, V|D, "bug"},
528 {"ump4", "(autodetected if fourcc==UMP4)", 0, FF_OPT_TYPE_CONST, FF_BUG_UMP4, INT_MIN, INT_MAX, V|D, "bug"},
529 {"no_padding", "padding bug (autodetected)", 0, FF_OPT_TYPE_CONST, FF_BUG_NO_PADDING, INT_MIN, INT_MAX, V|D, "bug"},
530 {"amv", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_AMV, INT_MIN, INT_MAX, V|D, "bug"},
531 {"ac_vlc", "illegal vlc bug (autodetected per fourcc)", 0, FF_OPT_TYPE_CONST, FF_BUG_AC_VLC, INT_MIN, INT_MAX, V|D, "bug"},
532 {"qpel_chroma", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_QPEL_CHROMA, INT_MIN, INT_MAX, V|D, "bug"},
533 {"std_qpel", "old standard qpel (autodetected per fourcc/version)", 0, FF_OPT_TYPE_CONST, FF_BUG_STD_QPEL, INT_MIN, INT_MAX, V|D, "bug"},
534 {"qpel_chroma2", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_QPEL_CHROMA2, INT_MIN, INT_MAX, V|D, "bug"},
535 {"direct_blocksize", "direct-qpel-blocksize bug (autodetected per fourcc/version)", 0, FF_OPT_TYPE_CONST, FF_BUG_DIRECT_BLOCKSIZE, INT_MIN, INT_MAX, V|D, "bug"},
536 {"edge", "edge padding bug (autodetected per fourcc/version)", 0, FF_OPT_TYPE_CONST, FF_BUG_EDGE, INT_MIN, INT_MAX, V|D, "bug"},
537 {"hpel_chroma", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_HPEL_CHROMA, INT_MIN, INT_MAX, V|D, "bug"},
538 {"dc_clip", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_DC_CLIP, INT_MIN, INT_MAX, V|D, "bug"},
539 {"ms", "workaround various bugs in microsofts broken decoders", 0, FF_OPT_TYPE_CONST, FF_BUG_MS, INT_MIN, INT_MAX, V|D, "bug"},
540 {"lelim", "single coefficient elimination threshold for luminance (negative values also consider dc coefficient)", OFFSET(luma_elim_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
541 {"celim", "single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)", OFFSET(chroma_elim_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
542 {"strict", "how strictly to follow the standards", OFFSET(strict_std_compliance), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, A|V|D, "strict"},
543 {"very", "strictly conform to a older more strict version of the spec or reference software", 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_VERY_STRICT, INT_MIN, INT_MAX, V|E, "strict"},
544 {"strict", "strictly conform to all the things in the spec no matter what consequences", 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_STRICT, INT_MIN, INT_MAX, V|E, "strict"},
545 {"normal", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_NORMAL, INT_MIN, INT_MAX, V|E, "strict"},
546 {"inofficial", "allow inofficial extensions", 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_INOFFICIAL, INT_MIN, INT_MAX, V|E, "strict"},
547 {"experimental", "allow non standardized experimental things", 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_EXPERIMENTAL, INT_MIN, INT_MAX, V|E, "strict"},
548 {"b_qoffset", "qp offset between p and b frames", OFFSET(b_quant_offset), FF_OPT_TYPE_FLOAT, 1.25, FLT_MIN, FLT_MAX, V|E},
549 {"er", "set error resilience strategy", OFFSET(error_resilience), FF_OPT_TYPE_INT, FF_ER_CAREFUL, INT_MIN, INT_MAX, A|V|D, "er"},
550 {"careful", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_CAREFUL, INT_MIN, INT_MAX, V|D, "er"},
551 {"compliant", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_COMPLIANT, INT_MIN, INT_MAX, V|D, "er"},
552 {"aggressive", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_AGGRESSIVE, INT_MIN, INT_MAX, V|D, "er"},
553 {"very_aggressive", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_VERY_AGGRESSIVE, INT_MIN, INT_MAX, V|D, "er"},
554 {"has_b_frames", NULL, OFFSET(has_b_frames), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
555 {"block_align", NULL, OFFSET(block_align), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
556 {"parse_only", NULL, OFFSET(parse_only), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
557 {"mpeg_quant", "use MPEG quantizers instead of H.263", OFFSET(mpeg_quant), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
558 {"stats_out", NULL, OFFSET(stats_out), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX},
559 {"stats_in", NULL, OFFSET(stats_in), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX},
560 {"qsquish", "how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function)", OFFSET(rc_qsquish), FF_OPT_TYPE_FLOAT, DEFAULT, 0, 99, V|E},
561 {"rc_qmod_amp", "experimental quantizer modulation", OFFSET(rc_qmod_amp), FF_OPT_TYPE_FLOAT, DEFAULT, -FLT_MAX, FLT_MAX, V|E},
562 {"rc_qmod_freq", "experimental quantizer modulation", OFFSET(rc_qmod_freq), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
563 {"rc_override_count", NULL, OFFSET(rc_override_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
564 {"rc_eq", "set rate control equation", OFFSET(rc_eq), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX, V|E},
565 {"maxrate", "set max video bitrate tolerance (in bits/s)", OFFSET(rc_max_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
566 {"minrate", "set min video bitrate tolerance (in bits/s)", OFFSET(rc_min_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
567 {"bufsize", "set ratecontrol buffer size (in bits)", OFFSET(rc_buffer_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, A|V|E},
568 {"rc_buf_aggressivity", "currently useless", OFFSET(rc_buffer_aggressivity), FF_OPT_TYPE_FLOAT, 1.0, FLT_MIN, FLT_MAX, V|E},
569 {"i_qfactor", "qp factor between p and i frames", OFFSET(i_quant_factor), FF_OPT_TYPE_FLOAT, -0.8, -FLT_MAX, FLT_MAX, V|E},
570 {"i_qoffset", "qp offset between p and i frames", OFFSET(i_quant_offset), FF_OPT_TYPE_FLOAT, 0.0, -FLT_MAX, FLT_MAX, V|E},
571 {"rc_init_cplx", "initial complexity for 1-pass encoding", OFFSET(rc_initial_cplx), FF_OPT_TYPE_FLOAT, DEFAULT, -FLT_MAX, FLT_MAX, V|E},
572 {"dct", "DCT algorithm", OFFSET(dct_algo), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, V|E, "dct"},
573 {"auto", "autoselect a good one (default)", 0, FF_OPT_TYPE_CONST, FF_DCT_AUTO, INT_MIN, INT_MAX, V|E, "dct"},
574 {"fastint", "fast integer", 0, FF_OPT_TYPE_CONST, FF_DCT_FASTINT, INT_MIN, INT_MAX, V|E, "dct"},
575 {"int", "accurate integer", 0, FF_OPT_TYPE_CONST, FF_DCT_INT, INT_MIN, INT_MAX, V|E, "dct"},
576 {"mmx", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_MMX, INT_MIN, INT_MAX, V|E, "dct"},
577 {"mlib", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_MLIB, INT_MIN, INT_MAX, V|E, "dct"},
578 {"altivec", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_ALTIVEC, INT_MIN, INT_MAX, V|E, "dct"},
579 {"faan", "floating point AAN DCT", 0, FF_OPT_TYPE_CONST, FF_DCT_FAAN, INT_MIN, INT_MAX, V|E, "dct"},
580 {"lumi_mask", "compresses bright areas stronger than medium ones", OFFSET(lumi_masking), FF_OPT_TYPE_FLOAT, 0, -FLT_MAX, FLT_MAX, V|E},
581 {"tcplx_mask", "temporal complexity masking", OFFSET(temporal_cplx_masking), FF_OPT_TYPE_FLOAT, 0, -FLT_MAX, FLT_MAX, V|E},
582 {"scplx_mask", "spatial complexity masking", OFFSET(spatial_cplx_masking), FF_OPT_TYPE_FLOAT, 0, -FLT_MAX, FLT_MAX, V|E},
583 {"p_mask", "inter masking", OFFSET(p_masking), FF_OPT_TYPE_FLOAT, 0, -FLT_MAX, FLT_MAX, V|E},
584 {"dark_mask", "compresses dark areas stronger than medium ones", OFFSET(dark_masking), FF_OPT_TYPE_FLOAT, 0, -FLT_MAX, FLT_MAX, V|E},
585 {"unused", NULL, OFFSET(unused), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
586 {"idct", "select IDCT implementation", OFFSET(idct_algo), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, V|E|D, "idct"},
587 {"auto", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_AUTO, INT_MIN, INT_MAX, V|E|D, "idct"},
588 {"int", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_INT, INT_MIN, INT_MAX, V|E|D, "idct"},
589 {"simple", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLE, INT_MIN, INT_MAX, V|E|D, "idct"},
590 {"simplemmx", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLEMMX, INT_MIN, INT_MAX, V|E|D, "idct"},
591 {"libmpeg2mmx", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_LIBMPEG2MMX, INT_MIN, INT_MAX, V|E|D, "idct"},
592 {"ps2", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_PS2, INT_MIN, INT_MAX, V|E|D, "idct"},
593 {"mlib", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_MLIB, INT_MIN, INT_MAX, V|E|D, "idct"},
594 {"arm", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_ARM, INT_MIN, INT_MAX, V|E|D, "idct"},
595 {"altivec", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_ALTIVEC, INT_MIN, INT_MAX, V|E|D, "idct"},
596 {"sh4", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SH4, INT_MIN, INT_MAX, V|E|D, "idct"},
597 {"simplearm", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLEARM, INT_MIN, INT_MAX, V|E|D, "idct"},
598 {"simplearmv5te", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLEARMV5TE, INT_MIN, INT_MAX, V|E|D, "idct"},
599 {"h264", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_H264, INT_MIN, INT_MAX, V|E|D, "idct"},
600 {"vp3", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_VP3, INT_MIN, INT_MAX, V|E|D, "idct"},
601 {"ipp", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_IPP, INT_MIN, INT_MAX, V|E|D, "idct"},
602 {"xvidmmx", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_XVIDMMX, INT_MIN, INT_MAX, V|E|D, "idct"},
603 {"slice_count", NULL, OFFSET(slice_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
604 {"ec", "set error concealment strategy", OFFSET(error_concealment), FF_OPT_TYPE_FLAGS, 3, INT_MIN, INT_MAX, V|D, "ec"},
605 {"guess_mvs", "iterative motion vector (MV) search (slow)", 0, FF_OPT_TYPE_CONST, FF_EC_GUESS_MVS, INT_MIN, INT_MAX, V|D, "ec"},
606 {"deblock", "use strong deblock filter for damaged MBs", 0, FF_OPT_TYPE_CONST, FF_EC_DEBLOCK, INT_MIN, INT_MAX, V|D, "ec"},
607 {"bits_per_sample", NULL, OFFSET(bits_per_sample), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
608 {"pred", "prediction method", OFFSET(prediction_method), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "pred"},
609 {"left", NULL, 0, FF_OPT_TYPE_CONST, FF_PRED_LEFT, INT_MIN, INT_MAX, V|E, "pred"},
610 {"plane", NULL, 0, FF_OPT_TYPE_CONST, FF_PRED_PLANE, INT_MIN, INT_MAX, V|E, "pred"},
611 {"median", NULL, 0, FF_OPT_TYPE_CONST, FF_PRED_MEDIAN, INT_MIN, INT_MAX, V|E, "pred"},
612 {"aspect", "sample aspect ratio", OFFSET(sample_aspect_ratio), FF_OPT_TYPE_RATIONAL, DEFAULT, 0, 10, V|E},
613 {"debug", "print specific debug info", OFFSET(debug), FF_OPT_TYPE_FLAGS, DEFAULT, 0, INT_MAX, V|A|S|E|D, "debug"},
614 {"pict", "picture info", 0, FF_OPT_TYPE_CONST, FF_DEBUG_PICT_INFO, INT_MIN, INT_MAX, V|D, "debug"},
615 {"rc", "rate control", 0, FF_OPT_TYPE_CONST, FF_DEBUG_RC, INT_MIN, INT_MAX, V|E, "debug"},
616 {"bitstream", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_BITSTREAM, INT_MIN, INT_MAX, V|D, "debug"},
617 {"mb_type", "macroblock (MB) type", 0, FF_OPT_TYPE_CONST, FF_DEBUG_MB_TYPE, INT_MIN, INT_MAX, V|D, "debug"},
618 {"qp", "per-block quantization parameter (QP)", 0, FF_OPT_TYPE_CONST, FF_DEBUG_QP, INT_MIN, INT_MAX, V|D, "debug"},
619 {"mv", "motion vector", 0, FF_OPT_TYPE_CONST, FF_DEBUG_MV, INT_MIN, INT_MAX, V|D, "debug"},
620 {"dct_coeff", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_DCT_COEFF, INT_MIN, INT_MAX, V|D, "debug"},
621 {"skip", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_SKIP, INT_MIN, INT_MAX, V|D, "debug"},
622 {"startcode", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_STARTCODE, INT_MIN, INT_MAX, V|D, "debug"},
623 {"pts", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_PTS, INT_MIN, INT_MAX, V|D, "debug"},
624 {"er", "error resilience", 0, FF_OPT_TYPE_CONST, FF_DEBUG_ER, INT_MIN, INT_MAX, V|D, "debug"},
625 {"mmco", "memory management control operations (H.264)", 0, FF_OPT_TYPE_CONST, FF_DEBUG_MMCO, INT_MIN, INT_MAX, V|D, "debug"},
626 {"bugs", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_BUGS, INT_MIN, INT_MAX, V|D, "debug"},
627 {"vis_qp", "visualize quantization parameter (QP), lower QP are tinted greener", 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_QP, INT_MIN, INT_MAX, V|D, "debug"},
628 {"vis_mb_type", "visualize block types", 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MB_TYPE, INT_MIN, INT_MAX, V|D, "debug"},
629 {"vismv", "visualize motion vectors (MVs)", OFFSET(debug_mv), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, V|D, "debug_mv"},
630 {"pf", "forward predicted MVs of P-frames", 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MV_P_FOR, INT_MIN, INT_MAX, V|D, "debug_mv"},
631 {"bf", "forward predicted MVs of B-frames", 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MV_B_FOR, INT_MIN, INT_MAX, V|D, "debug_mv"},
632 {"bb", "backward predicted MVs of B-frames", 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MV_B_BACK, INT_MIN, INT_MAX, V|D, "debug_mv"},
633 {"mb_qmin", "obsolete, use qmin", OFFSET(mb_qmin), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
634 {"mb_qmax", "obsolete, use qmax", OFFSET(mb_qmax), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
635 {"cmp", "full pel me compare function", OFFSET(me_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
636 {"subcmp", "sub pel me compare function", OFFSET(me_sub_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
637 {"mbcmp", "macroblock compare function", OFFSET(mb_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
638 {"ildctcmp", "interlaced dct compare function", OFFSET(ildct_cmp), FF_OPT_TYPE_INT, FF_CMP_VSAD, INT_MIN, INT_MAX, V|E, "cmp_func"},
639 {"dia_size", "diamond type & size for motion estimation", OFFSET(dia_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
640 {"last_pred", "amount of motion predictors from the previous frame", OFFSET(last_predictor_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
641 {"preme", "pre motion estimation", OFFSET(pre_me), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
642 {"precmp", "pre motion estimation compare function", OFFSET(me_pre_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
643 {"sad", "sum of absolute differences, fast (default)", 0, FF_OPT_TYPE_CONST, FF_CMP_SAD, INT_MIN, INT_MAX, V|E, "cmp_func"},
644 {"sse", "sum of squared errors", 0, FF_OPT_TYPE_CONST, FF_CMP_SSE, INT_MIN, INT_MAX, V|E, "cmp_func"},
645 {"satd", "sum of absolute Hadamard transformed differences", 0, FF_OPT_TYPE_CONST, FF_CMP_SATD, INT_MIN, INT_MAX, V|E, "cmp_func"},
646 {"dct", "sum of absolute DCT transformed differences", 0, FF_OPT_TYPE_CONST, FF_CMP_DCT, INT_MIN, INT_MAX, V|E, "cmp_func"},
647 {"psnr", "sum of squared quantization errors (avoid, low quality)", 0, FF_OPT_TYPE_CONST, FF_CMP_PSNR, INT_MIN, INT_MAX, V|E, "cmp_func"},
648 {"bit", "number of bits needed for the block", 0, FF_OPT_TYPE_CONST, FF_CMP_BIT, INT_MIN, INT_MAX, V|E, "cmp_func"},
649 {"rd", "rate distortion optimal, slow", 0, FF_OPT_TYPE_CONST, FF_CMP_RD, INT_MIN, INT_MAX, V|E, "cmp_func"},
650 {"zero", "0", 0, FF_OPT_TYPE_CONST, FF_CMP_ZERO, INT_MIN, INT_MAX, V|E, "cmp_func"},
651 {"vsad", "sum of absolute vertical differences", 0, FF_OPT_TYPE_CONST, FF_CMP_VSAD, INT_MIN, INT_MAX, V|E, "cmp_func"},
652 {"vsse","sum of squared vertical differences", 0, FF_OPT_TYPE_CONST, FF_CMP_VSSE, INT_MIN, INT_MAX, V|E, "cmp_func"},
653 {"nsse", "noise preserving sum of squared differences", 0, FF_OPT_TYPE_CONST, FF_CMP_NSSE, INT_MIN, INT_MAX, V|E, "cmp_func"},
654 #ifdef CONFIG_SNOW_ENCODER
655 {"w53", "5/3 wavelet, only used in snow", 0, FF_OPT_TYPE_CONST, FF_CMP_W53, INT_MIN, INT_MAX, V|E, "cmp_func"},
656 {"w97", "9/7 wavelet, only used in snow", 0, FF_OPT_TYPE_CONST, FF_CMP_W97, INT_MIN, INT_MAX, V|E, "cmp_func"},
657 #endif
658 {"dctmax", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_DCTMAX, INT_MIN, INT_MAX, V|E, "cmp_func"},
659 {"chroma", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_CHROMA, INT_MIN, INT_MAX, V|E, "cmp_func"},
660 {"pre_dia_size", "diamond type & size for motion estimation pre-pass", OFFSET(pre_dia_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
661 {"subq", "sub pel motion estimation quality", OFFSET(me_subpel_quality), FF_OPT_TYPE_INT, 8, INT_MIN, INT_MAX, V|E},
662 {"dtg_active_format", NULL, OFFSET(dtg_active_format), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
663 {"me_range", "limit motion vectors range (1023 for DivX player)", OFFSET(me_range), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
664 {"ibias", "intra quant bias", OFFSET(intra_quant_bias), FF_OPT_TYPE_INT, FF_DEFAULT_QUANT_BIAS, INT_MIN, INT_MAX, V|E},
665 {"pbias", "inter quant bias", OFFSET(inter_quant_bias), FF_OPT_TYPE_INT, FF_DEFAULT_QUANT_BIAS, INT_MIN, INT_MAX, V|E},
666 {"color_table_id", NULL, OFFSET(color_table_id), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
667 {"internal_buffer_count", NULL, OFFSET(internal_buffer_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
668 {"global_quality", NULL, OFFSET(global_quality), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
669 {"coder", NULL, OFFSET(coder_type), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "coder"},
670 {"vlc", "variable length coder / huffman coder", 0, FF_OPT_TYPE_CONST, FF_CODER_TYPE_VLC, INT_MIN, INT_MAX, V|E, "coder"},
671 {"ac", "arithmetic coder", 0, FF_OPT_TYPE_CONST, FF_CODER_TYPE_AC, INT_MIN, INT_MAX, V|E, "coder"},
672 {"raw", "raw (no encoding)", 0, FF_OPT_TYPE_CONST, FF_CODER_TYPE_RAW, INT_MIN, INT_MAX, V|E, "coder"},
673 {"rle", "run-length coder", 0, FF_OPT_TYPE_CONST, FF_CODER_TYPE_RLE, INT_MIN, INT_MAX, V|E, "coder"},
674 {"deflate", "deflate-based coder", 0, FF_OPT_TYPE_CONST, FF_CODER_TYPE_DEFLATE, INT_MIN, INT_MAX, V|E, "coder"},
675 {"context", "context model", OFFSET(context_model), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
676 {"slice_flags", NULL, OFFSET(slice_flags), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
677 {"xvmc_acceleration", NULL, OFFSET(xvmc_acceleration), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
678 {"mbd", "macroblock decision algorithm (high quality mode)", OFFSET(mb_decision), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "mbd"},
679 {"simple", "use mbcmp (default)", 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_SIMPLE, INT_MIN, INT_MAX, V|E, "mbd"},
680 {"bits", "use fewest bits", 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_BITS, INT_MIN, INT_MAX, V|E, "mbd"},
681 {"rd", "use best rate distortion", 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_RD, INT_MIN, INT_MAX, V|E, "mbd"},
682 {"stream_codec_tag", NULL, OFFSET(stream_codec_tag), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
683 {"sc_threshold", "scene change threshold", OFFSET(scenechange_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
684 {"lmin", "min lagrange factor (VBR)", OFFSET(lmin), FF_OPT_TYPE_INT, 2*FF_QP2LAMBDA, 0, INT_MAX, V|E},
685 {"lmax", "max lagrange factor (VBR)", OFFSET(lmax), FF_OPT_TYPE_INT, 31*FF_QP2LAMBDA, 0, INT_MAX, V|E},
686 {"nr", "noise reduction", OFFSET(noise_reduction), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
687 {"rc_init_occupancy", "number of bits which should be loaded into the rc buffer before decoding starts", OFFSET(rc_initial_buffer_occupancy), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
688 {"inter_threshold", NULL, OFFSET(inter_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
689 {"flags2", NULL, OFFSET(flags2), FF_OPT_TYPE_FLAGS, CODEC_FLAG2_FASTPSKIP|CODEC_FLAG2_BIT_RESERVOIR, INT_MIN, INT_MAX, V|A|E|D, "flags2"},
690 {"error", NULL, OFFSET(error_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
691 {"antialias", "MP3 antialias algorithm", OFFSET(antialias_algo), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D, "aa"},
692 {"auto", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_AUTO, INT_MIN, INT_MAX, V|D, "aa"},
693 {"fastint", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_FASTINT, INT_MIN, INT_MAX, V|D, "aa"},
694 {"int", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_INT, INT_MIN, INT_MAX, V|D, "aa"},
695 {"float", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_FLOAT, INT_MIN, INT_MAX, V|D, "aa"},
696 {"qns", "quantizer noise shaping", OFFSET(quantizer_noise_shaping), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
697 {"threads", NULL, OFFSET(thread_count), FF_OPT_TYPE_INT, 1, INT_MIN, INT_MAX, V|E|D},
698 {"me_threshold", "motion estimaton threshold", OFFSET(me_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
699 {"mb_threshold", "macroblock threshold", OFFSET(mb_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
700 {"dc", "intra_dc_precision", OFFSET(intra_dc_precision), FF_OPT_TYPE_INT, 0, INT_MIN, INT_MAX, V|E},
701 {"nssew", "nsse weight", OFFSET(nsse_weight), FF_OPT_TYPE_INT, 8, INT_MIN, INT_MAX, V|E},
702 {"skip_top", "number of macroblock rows at the top which are skipped", OFFSET(skip_top), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
703 {"skip_bottom", "number of macroblock rows at the bottom which are skipped", OFFSET(skip_bottom), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
704 {"profile", NULL, OFFSET(profile), FF_OPT_TYPE_INT, FF_PROFILE_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "profile"},
705 {"unknown", NULL, 0, FF_OPT_TYPE_CONST, FF_PROFILE_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "profile"},
706 {"aac_main", NULL, 0, FF_OPT_TYPE_CONST, FF_PROFILE_AAC_MAIN, INT_MIN, INT_MAX, A|E, "profile"},
707 {"aac_low", NULL, 0, FF_OPT_TYPE_CONST, FF_PROFILE_AAC_LOW, INT_MIN, INT_MAX, A|E, "profile"},
708 {"aac_ssr", NULL, 0, FF_OPT_TYPE_CONST, FF_PROFILE_AAC_SSR, INT_MIN, INT_MAX, A|E, "profile"},
709 {"aac_ltp", NULL, 0, FF_OPT_TYPE_CONST, FF_PROFILE_AAC_LTP, INT_MIN, INT_MAX, A|E, "profile"},
710 {"level", NULL, OFFSET(level), FF_OPT_TYPE_INT, FF_LEVEL_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "level"},
711 {"unknown", NULL, 0, FF_OPT_TYPE_CONST, FF_LEVEL_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "level"},
712 {"lowres", "decode at 1= 1/2, 2=1/4, 3=1/8 resolutions", OFFSET(lowres), FF_OPT_TYPE_INT, 0, 0, INT_MAX, V|D},
713 {"skip_threshold", "frame skip threshold", OFFSET(frame_skip_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
714 {"skip_factor", "frame skip factor", OFFSET(frame_skip_factor), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
715 {"skip_exp", "frame skip exponent", OFFSET(frame_skip_exp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
716 {"skipcmp", "frame skip compare function", OFFSET(frame_skip_cmp), FF_OPT_TYPE_INT, FF_CMP_DCTMAX, INT_MIN, INT_MAX, V|E, "cmp_func"},
717 {"border_mask", "increases the quantizer for macroblocks close to borders", OFFSET(border_masking), FF_OPT_TYPE_FLOAT, DEFAULT, -FLT_MAX, FLT_MAX, V|E},
718 {"mblmin", "min macroblock lagrange factor (VBR)", OFFSET(mb_lmin), FF_OPT_TYPE_INT, FF_QP2LAMBDA * 2, 1, FF_LAMBDA_MAX, V|E},
719 {"mblmax", "max macroblock lagrange factor (VBR)", OFFSET(mb_lmax), FF_OPT_TYPE_INT, FF_QP2LAMBDA * 31, 1, FF_LAMBDA_MAX, V|E},
720 {"mepc", "motion estimation bitrate penalty compensation (1.0 = 256)", OFFSET(me_penalty_compensation), FF_OPT_TYPE_INT, 256, INT_MIN, INT_MAX, V|E},
721 {"bidir_refine", "refine the two motion vectors used in bidirectional macroblocks", OFFSET(bidir_refine), FF_OPT_TYPE_INT, DEFAULT, 0, 4, V|E},
722 {"brd_scale", "downscales frames for dynamic B-frame decision", OFFSET(brd_scale), FF_OPT_TYPE_INT, DEFAULT, 0, 10, V|E},
723 {"crf", "enables constant quality mode, and selects the quality (x264)", OFFSET(crf), FF_OPT_TYPE_FLOAT, DEFAULT, 0, 51, V|E},
724 {"cqp", "constant quantization parameter rate control method", OFFSET(cqp), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, V|E},
725 {"keyint_min", "minimum interval between IDR-frames (x264)", OFFSET(keyint_min), FF_OPT_TYPE_INT, 25, INT_MIN, INT_MAX, V|E},
726 {"refs", "reference frames to consider for motion compensation (Snow)", OFFSET(refs), FF_OPT_TYPE_INT, 1, INT_MIN, INT_MAX, V|E},
727 {"chromaoffset", "chroma qp offset from luma", OFFSET(chromaoffset), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
728 {"bframebias", "influences how often B-frames are used", OFFSET(bframebias), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
729 {"trellis", "rate-distortion optimal quantization", OFFSET(trellis), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|A|E},
730 {"directpred", "direct mv prediction mode - 0 (none), 1 (spatial), 2 (temporal)", OFFSET(directpred), FF_OPT_TYPE_INT, 2, INT_MIN, INT_MAX, V|E},
731 {"bpyramid", "allows B-frames to be used as references for predicting", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_BPYRAMID, INT_MIN, INT_MAX, V|E, "flags2"},
732 {"wpred", "weighted biprediction for b-frames (H.264)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_WPRED, INT_MIN, INT_MAX, V|E, "flags2"},
733 {"mixed_refs", "one reference per partition, as opposed to one reference per macroblock", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_MIXED_REFS, INT_MIN, INT_MAX, V|E, "flags2"},
734 {"dct8x8", "high profile 8x8 transform (H.264)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_8X8DCT, INT_MIN, INT_MAX, V|E, "flags2"},
735 {"fastpskip", "fast pskip (H.264)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_FASTPSKIP, INT_MIN, INT_MAX, V|E, "flags2"},
736 {"aud", "access unit delimiters (H.264)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_AUD, INT_MIN, INT_MAX, V|E, "flags2"},
737 {"brdo", "b-frame rate-distortion optimization", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_BRDO, INT_MIN, INT_MAX, V|E, "flags2"},
738 {"skiprd", "RD optimal MB level residual skipping", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_SKIP_RD, INT_MIN, INT_MAX, V|E, "flags2"},
739 {"complexityblur", "reduce fluctuations in qp (before curve compression)", OFFSET(complexityblur), FF_OPT_TYPE_FLOAT, 20.0, FLT_MIN, FLT_MAX, V|E},
740 {"deblockalpha", "in-loop deblocking filter alphac0 parameter", OFFSET(deblockalpha), FF_OPT_TYPE_INT, DEFAULT, -6, 6, V|E},
741 {"deblockbeta", "in-loop deblocking filter beta parameter", OFFSET(deblockbeta), FF_OPT_TYPE_INT, DEFAULT, -6, 6, V|E},
742 {"partitions", "macroblock subpartition sizes to consider", OFFSET(partitions), FF_OPT_TYPE_FLAGS, DEFAULT, INT_MIN, INT_MAX, V|E, "partitions"},
743 {"parti4x4", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_I4X4, INT_MIN, INT_MAX, V|E, "partitions"},
744 {"parti8x8", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_I8X8, INT_MIN, INT_MAX, V|E, "partitions"},
745 {"partp4x4", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_P4X4, INT_MIN, INT_MAX, V|E, "partitions"},
746 {"partp8x8", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_P8X8, INT_MIN, INT_MAX, V|E, "partitions"},
747 {"partb8x8", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_B8X8, INT_MIN, INT_MAX, V|E, "partitions"},
748 {"sc_factor", "multiplied by qscale for each frame and added to scene_change_score", OFFSET(scenechange_factor), FF_OPT_TYPE_INT, 6, 0, INT_MAX, V|E},
749 {"mv0_threshold", NULL, OFFSET(mv0_threshold), FF_OPT_TYPE_INT, 256, 0, INT_MAX, V|E},
750 {"ivlc", "intra vlc table", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_INTRA_VLC, INT_MIN, INT_MAX, V|E, "flags2"},
751 {"b_sensitivity", "adjusts sensitivity of b_frame_strategy 1", OFFSET(b_sensitivity), FF_OPT_TYPE_INT, 40, 1, INT_MAX, V|E},
752 {"compression_level", NULL, OFFSET(compression_level), FF_OPT_TYPE_INT, FF_COMPRESSION_DEFAULT, INT_MIN, INT_MAX, V|A|E},
753 {"use_lpc", "sets whether to use LPC mode (FLAC)", OFFSET(use_lpc), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
754 {"lpc_coeff_precision", "LPC coefficient precision (FLAC)", OFFSET(lpc_coeff_precision), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, A|E},
755 {"min_prediction_order", NULL, OFFSET(min_prediction_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
756 {"max_prediction_order", NULL, OFFSET(max_prediction_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
757 {"prediction_order_method", "search method for selecting prediction order", OFFSET(prediction_order_method), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
758 {"min_partition_order", NULL, OFFSET(min_partition_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
759 {"max_partition_order", NULL, OFFSET(max_partition_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
760 {"timecode_frame_start", "GOP timecode frame start number, in non drop frame format", OFFSET(timecode_frame_start), FF_OPT_TYPE_INT, 0, 0, INT_MAX, V|E},
761 {"drop_frame_timecode", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_DROP_FRAME_TIMECODE, INT_MIN, INT_MAX, V|E, "flags2"},
762 {"non_linear_q", "use non linear quantizer", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_NON_LINEAR_QUANT, INT_MIN, INT_MAX, V|E, "flags2"},
763 {"request_channels", "set desired number of audio channels", OFFSET(request_channels), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, A|D},
764 {"drc_scale", "percentage of dynamic range compression to apply", OFFSET(drc_scale), FF_OPT_TYPE_FLOAT, 1.0, 0.0, 1.0, A|D},
765 {"reservoir", "use bit reservoir", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_BIT_RESERVOIR, INT_MIN, INT_MAX, A|E, "flags2"},
766 {NULL},
767 };
768
769 #undef A
770 #undef V
771 #undef S
772 #undef E
773 #undef D
774 #undef DEFAULT
775
776 static AVClass av_codec_context_class = { "AVCodecContext", context_to_name, options };
777
778 void avcodec_get_context_defaults2(AVCodecContext *s, enum CodecType codec_type){
779 int flags=0;
780 memset(s, 0, sizeof(AVCodecContext));
781
782 s->av_class= &av_codec_context_class;
783
784 s->codec_type = codec_type;
785 if(codec_type == CODEC_TYPE_AUDIO)
786 flags= AV_OPT_FLAG_AUDIO_PARAM;
787 else if(codec_type == CODEC_TYPE_VIDEO)
788 flags= AV_OPT_FLAG_VIDEO_PARAM;
789 else if(codec_type == CODEC_TYPE_SUBTITLE)
790 flags= AV_OPT_FLAG_SUBTITLE_PARAM;
791 av_opt_set_defaults2(s, flags, flags);
792
793 s->rc_eq= "tex^qComp";
794 s->time_base= (AVRational){0,1};
795 s->get_buffer= avcodec_default_get_buffer;
796 s->release_buffer= avcodec_default_release_buffer;
797 s->get_format= avcodec_default_get_format;
798 s->execute= avcodec_default_execute;
799 s->sample_aspect_ratio= (AVRational){0,1};
800 s->pix_fmt= PIX_FMT_NONE;
801 s->sample_fmt= SAMPLE_FMT_S16; // FIXME: set to NONE
802
803 s->palctrl = NULL;
804 s->reget_buffer= avcodec_default_reget_buffer;
805 }
806
807 AVCodecContext *avcodec_alloc_context2(enum CodecType codec_type){
808 AVCodecContext *avctx= av_malloc(sizeof(AVCodecContext));
809
810 if(avctx==NULL) return NULL;
811
812 avcodec_get_context_defaults2(avctx, codec_type);
813
814 return avctx;
815 }
816
817 void avcodec_get_context_defaults(AVCodecContext *s){
818 avcodec_get_context_defaults2(s, CODEC_TYPE_UNKNOWN);
819 }
820
821 AVCodecContext *avcodec_alloc_context(void){
822 return avcodec_alloc_context2(CODEC_TYPE_UNKNOWN);
823 }
824
825 void avcodec_get_frame_defaults(AVFrame *pic){
826 memset(pic, 0, sizeof(AVFrame));
827
828 pic->pts= AV_NOPTS_VALUE;
829 pic->key_frame= 1;
830 }
831
832 AVFrame *avcodec_alloc_frame(void){
833 AVFrame *pic= av_malloc(sizeof(AVFrame));
834
835 if(pic==NULL) return NULL;
836
837 avcodec_get_frame_defaults(pic);
838
839 return pic;
840 }
841
842 int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
843 {
844 int ret= -1;
845
846 entangled_thread_counter++;
847 if(entangled_thread_counter != 1){
848 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
849 goto end;
850 }
851
852 if(avctx->codec || !codec)
853 goto end;
854
855 if (codec->priv_data_size > 0) {
856 avctx->priv_data = av_mallocz(codec->priv_data_size);
857 if (!avctx->priv_data) {
858 ret = AVERROR(ENOMEM);
859 goto end;
860 }
861 } else {
862 avctx->priv_data = NULL;
863 }
864
865 if(avctx->coded_width && avctx->coded_height)
866 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
867 else if(avctx->width && avctx->height)
868 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
869
870 if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height)){
871 av_freep(&avctx->priv_data);
872 ret = AVERROR(EINVAL);
873 goto end;
874 }
875
876 avctx->codec = codec;
877 avctx->codec_id = codec->id;
878 avctx->frame_number = 0;
879 if(avctx->codec->init){
880 ret = avctx->codec->init(avctx);
881 if (ret < 0) {
882 av_freep(&avctx->priv_data);
883 avctx->codec= NULL;
884 goto end;
885 }
886 }
887 ret=0;
888 end:
889 entangled_thread_counter--;
890 return ret;
891 }
892
893 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
894 const short *samples)
895 {
896 if(buf_size < FF_MIN_BUFFER_SIZE && 0){
897 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
898 return -1;
899 }
900 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
901 int ret = avctx->codec->encode(avctx, buf, buf_size, (void *)samples);
902 avctx->frame_number++;
903 return ret;
904 }else
905 return 0;
906 }
907
908 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
909 const AVFrame *pict)
910 {
911 if(buf_size < FF_MIN_BUFFER_SIZE){
912 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
913 return -1;
914 }
915 if(avcodec_check_dimensions(avctx,avctx->width,avctx->height))
916 return -1;
917 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
918 int ret = avctx->codec->encode(avctx, buf, buf_size, (void *)pict);
919 avctx->frame_number++;
920 emms_c(); //needed to avoid an emms_c() call before every return;
921
922 return ret;
923 }else
924 return 0;
925 }
926
927 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
928 const AVSubtitle *sub)
929 {
930 int ret;
931 ret = avctx->codec->encode(avctx, buf, buf_size, (void *)sub);
932 avctx->frame_number++;
933 return ret;
934 }
935
936 int attribute_align_arg avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
937 int *got_picture_ptr,
938 const uint8_t *buf, int buf_size)
939 {
940 int ret;
941
942 *got_picture_ptr= 0;
943 if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height))
944 return -1;
945 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || buf_size){
946 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
947 buf, buf_size);
948
949 emms_c(); //needed to avoid an emms_c() call before every return;
950
951 if (*got_picture_ptr)
952 avctx->frame_number++;
953 }else
954 ret= 0;
955
956 return ret;
957 }
958
959 int attribute_align_arg avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples,
960 int *frame_size_ptr,
961 const uint8_t *buf, int buf_size)
962 {
963 int ret;
964
965 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || buf_size){
966 //FIXME remove the check below _after_ ensuring that all audio check that the available space is enough
967 if(*frame_size_ptr < AVCODEC_MAX_AUDIO_FRAME_SIZE){
968 av_log(avctx, AV_LOG_ERROR, "buffer smaller than AVCODEC_MAX_AUDIO_FRAME_SIZE\n");
969 return -1;
970 }
971 if(*frame_size_ptr < FF_MIN_BUFFER_SIZE ||
972 *frame_size_ptr < avctx->channels * avctx->frame_size * sizeof(int16_t)){
973 av_log(avctx, AV_LOG_ERROR, "buffer %d too small\n", *frame_size_ptr);
974 return -1;
975 }
976
977 ret = avctx->codec->decode(avctx, samples, frame_size_ptr,
978 buf, buf_size);
979 avctx->frame_number++;
980 }else{
981 ret= 0;
982 *frame_size_ptr=0;
983 }
984 return ret;
985 }
986
987 #if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
988 int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
989 int *frame_size_ptr,
990 const uint8_t *buf, int buf_size){
991 *frame_size_ptr= AVCODEC_MAX_AUDIO_FRAME_SIZE;
992 return avcodec_decode_audio2(avctx, samples, frame_size_ptr, buf, buf_size);
993 }
994 #endif
995
996 int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
997 int *got_sub_ptr,
998 const uint8_t *buf, int buf_size)
999 {
1000 int ret;
1001
1002 *got_sub_ptr = 0;
1003 ret = avctx->codec->decode(avctx, sub, got_sub_ptr,
1004 buf, buf_size);
1005 if (*got_sub_ptr)
1006 avctx->frame_number++;
1007 return ret;
1008 }
1009
1010 int avcodec_close(AVCodecContext *avctx)
1011 {
1012 entangled_thread_counter++;
1013 if(entangled_thread_counter != 1){
1014 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
1015 entangled_thread_counter--;
1016 return -1;
1017 }
1018
1019 if (ENABLE_THREADS && avctx->thread_opaque)
1020 avcodec_thread_free(avctx);
1021 if (avctx->codec->close)
1022 avctx->codec->close(avctx);
1023 avcodec_default_free_buffers(avctx);
1024 av_freep(&avctx->priv_data);
1025 avctx->codec = NULL;
1026 entangled_thread_counter--;
1027 return 0;
1028 }
1029
1030 AVCodec *avcodec_find_encoder(enum CodecID id)
1031 {
1032 AVCodec *p;
1033 p = first_avcodec;
1034 while (p) {
1035 if (p->encode != NULL && p->id == id)
1036 return p;
1037 p = p->next;
1038 }
1039 return NULL;
1040 }
1041
1042 AVCodec *avcodec_find_encoder_by_name(const char *name)
1043 {
1044 AVCodec *p;
1045 p = first_avcodec;
1046 while (p) {
1047 if (p->encode != NULL && strcmp(name,p->name) == 0)
1048 return p;
1049 p = p->next;
1050 }
1051 return NULL;
1052 }
1053
1054 AVCodec *avcodec_find_decoder(enum CodecID id)
1055 {
1056 AVCodec *p;
1057 p = first_avcodec;
1058 while (p) {
1059 if (p->decode != NULL && p->id == id)
1060 return p;
1061 p = p->next;
1062 }
1063 return NULL;
1064 }
1065
1066 AVCodec *avcodec_find_decoder_by_name(const char *name)
1067 {
1068 AVCodec *p;
1069 p = first_avcodec;
1070 while (p) {
1071 if (p->decode != NULL && strcmp(name,p->name) == 0)
1072 return p;
1073 p = p->next;
1074 }
1075 return NULL;
1076 }
1077
1078 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
1079 {
1080 const char *codec_name;
1081 AVCodec *p;
1082 char buf1[32];
1083 char channels_str[100];
1084 int bitrate;
1085 AVRational display_aspect_ratio;
1086
1087 if (encode)
1088 p = avcodec_find_encoder(enc->codec_id);
1089 else
1090 p = avcodec_find_decoder(enc->codec_id);
1091
1092 if (p) {
1093 codec_name = p->name;
1094 if (!encode && enc->codec_id == CODEC_ID_MP3) {
1095 if (enc->sub_id == 2)
1096 codec_name = "mp2";
1097 else if (enc->sub_id == 1)
1098 codec_name = "mp1";
1099 }
1100 } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
1101 /* fake mpeg2 transport stream codec (currently not
1102 registered) */
1103 codec_name = "mpeg2ts";
1104 } else if (enc->codec_name[0] != '\0') {
1105 codec_name = enc->codec_name;
1106 } else {
1107 /* output avi tags */
1108 if( isprint(enc->codec_tag&0xFF) && isprint((enc->codec_tag>>8)&0xFF)
1109 && isprint((enc->codec_tag>>16)&0xFF) && isprint((enc->codec_tag>>24)&0xFF)){
1110 snprintf(buf1, sizeof(buf1), "%c%c%c%c / 0x%04X",
1111 enc->codec_tag & 0xff,
1112 (enc->codec_tag >> 8) & 0xff,
1113 (enc->codec_tag >> 16) & 0xff,
1114 (enc->codec_tag >> 24) & 0xff,
1115 enc->codec_tag);
1116 } else {
1117 snprintf(buf1, sizeof(buf1), "0x%04x", enc->codec_tag);
1118 }
1119 codec_name = buf1;
1120 }
1121
1122 switch(enc->codec_type) {
1123 case CODEC_TYPE_VIDEO:
1124 snprintf(buf, buf_size,
1125 "Video: %s%s",
1126 codec_name, enc->mb_decision ? " (hq)" : "");
1127 if (enc->pix_fmt != PIX_FMT_NONE) {
1128 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1129 ", %s",
1130 avcodec_get_pix_fmt_name(enc->pix_fmt));
1131 }
1132 if (enc->width) {
1133 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1134 ", %dx%d",
1135 enc->width, enc->height);
1136 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
1137 enc->width*enc->sample_aspect_ratio.num,
1138 enc->height*enc->sample_aspect_ratio.den,
1139 1024*1024);
1140 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1141 " [PAR %d:%d DAR %d:%d]",
1142 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
1143 display_aspect_ratio.num, display_aspect_ratio.den);
1144 if(av_log_get_level() >= AV_LOG_DEBUG){
1145 int g= ff_gcd(enc->time_base.num, enc->time_base.den);
1146 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1147 ", %d/%d",
1148 enc->time_base.num/g, enc->time_base.den/g);
1149 }
1150 }
1151 if (encode) {
1152 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1153 ", q=%d-%d", enc->qmin, enc->qmax);
1154 }
1155 bitrate = enc->bit_rate;
1156 break;
1157 case CODEC_TYPE_AUDIO:
1158 snprintf(buf, buf_size,
1159 "Audio: %s",
1160 codec_name);
1161 switch (enc->channels) {
1162 case 1:
1163 strcpy(channels_str, "mono");
1164 break;
1165 case 2:
1166 strcpy(channels_str, "stereo");
1167 break;
1168 case 6:
1169 strcpy(channels_str, "5:1");
1170 break;
1171 default:
1172 snprintf(channels_str, sizeof(channels_str), "%d channels", enc->channels);
1173 break;
1174 }
1175 if (enc->sample_rate) {
1176 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1177 ", %d Hz, %s",
1178 enc->sample_rate,
1179 channels_str);
1180 }
1181
1182 /* for PCM codecs, compute bitrate directly */
1183 switch(enc->codec_id) {
1184 case CODEC_ID_PCM_S32LE:
1185 case CODEC_ID_PCM_S32BE:
1186 case CODEC_ID_PCM_U32LE:
1187 case CODEC_ID_PCM_U32BE:
1188 bitrate = enc->sample_rate * enc->channels * 32;
1189 break;
1190 case CODEC_ID_PCM_S24LE:
1191 case CODEC_ID_PCM_S24BE:
1192 case CODEC_ID_PCM_U24LE:
1193 case CODEC_ID_PCM_U24BE:
1194 case CODEC_ID_PCM_S24DAUD:
1195 bitrate = enc->sample_rate * enc->channels * 24;
1196 break;
1197 case CODEC_ID_PCM_S16LE:
1198 case CODEC_ID_PCM_S16BE:
1199 case CODEC_ID_PCM_S16LE_PLANAR:
1200 case CODEC_ID_PCM_U16LE:
1201 case CODEC_ID_PCM_U16BE:
1202 bitrate = enc->sample_rate * enc->channels * 16;
1203 break;
1204 case CODEC_ID_PCM_S8:
1205 case CODEC_ID_PCM_U8:
1206 case CODEC_ID_PCM_ALAW:
1207 case CODEC_ID_PCM_MULAW:
1208 bitrate = enc->sample_rate * enc->channels * 8;
1209 break;
1210 default:
1211 bitrate = enc->bit_rate;
1212 break;
1213 }
1214 break;
1215 case CODEC_TYPE_DATA:
1216 snprintf(buf, buf_size, "Data: %s", codec_name);
1217 bitrate = enc->bit_rate;
1218 break;
1219 case CODEC_TYPE_SUBTITLE:
1220 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
1221 bitrate = enc->bit_rate;
1222 break;
1223 case CODEC_TYPE_ATTACHMENT:
1224 snprintf(buf, buf_size, "Attachment: %s", codec_name);
1225 bitrate = enc->bit_rate;
1226 break;
1227 default:
1228 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
1229 return;
1230 }
1231 if (encode) {
1232 if (enc->flags & CODEC_FLAG_PASS1)
1233 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1234 ", pass 1");
1235 if (enc->flags & CODEC_FLAG_PASS2)
1236 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1237 ", pass 2");
1238 }
1239 if (bitrate != 0) {
1240 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1241 ", %d kb/s", bitrate / 1000);
1242 }
1243 }
1244
1245 unsigned avcodec_version( void )
1246 {
1247 return LIBAVCODEC_VERSION_INT;
1248 }
1249
1250 unsigned avcodec_build( void )
1251 {
1252 return LIBAVCODEC_BUILD;
1253 }
1254
1255 void avcodec_init(void)
1256 {
1257 static int initialized = 0;
1258
1259 if (initialized != 0)
1260 return;
1261 initialized = 1;
1262
1263 dsputil_static_init();
1264 }
1265
1266 void avcodec_flush_buffers(AVCodecContext *avctx)
1267 {
1268 if(avctx->codec->flush)
1269 avctx->codec->flush(avctx);
1270 }
1271
1272 void avcodec_default_free_buffers(AVCodecContext *s){
1273 int i, j;
1274
1275 if(s->internal_buffer==NULL) return;
1276
1277 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
1278 InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
1279 for(j=0; j<4; j++){
1280 av_freep(&buf->base[j]);
1281 buf->data[j]= NULL;
1282 }
1283 }
1284 av_freep(&s->internal_buffer);
1285
1286 s->internal_buffer_count=0;
1287 }
1288
1289 char av_get_pict_type_char(int pict_type){
1290 switch(pict_type){
1291 case I_TYPE: return 'I';
1292 case P_TYPE: return 'P';
1293 case B_TYPE: return 'B';
1294 case S_TYPE: return 'S';
1295 case SI_TYPE:return 'i';
1296 case SP_TYPE:return 'p';
1297 default: return '?';
1298 }
1299 }
1300
1301 int av_get_bits_per_sample(enum CodecID codec_id){
1302 switch(codec_id){
1303 case CODEC_ID_ADPCM_SBPRO_2:
1304 return 2;
1305 case CODEC_ID_ADPCM_SBPRO_3:
1306 return 3;
1307 case CODEC_ID_ADPCM_SBPRO_4:
1308 case CODEC_ID_ADPCM_CT:
1309 return 4;
1310 case CODEC_ID_PCM_ALAW:
1311 case CODEC_ID_PCM_MULAW:
1312 case CODEC_ID_PCM_S8:
1313 case CODEC_ID_PCM_U8:
1314 return 8;
1315 case CODEC_ID_PCM_S16BE:
1316 case CODEC_ID_PCM_S16LE:
1317 case CODEC_ID_PCM_S16LE_PLANAR:
1318 case CODEC_ID_PCM_U16BE:
1319 case CODEC_ID_PCM_U16LE:
1320 return 16;
1321 case CODEC_ID_PCM_S24DAUD:
1322 case CODEC_ID_PCM_S24BE:
1323 case CODEC_ID_PCM_S24LE:
1324 case CODEC_ID_PCM_U24BE:
1325 case CODEC_ID_PCM_U24LE:
1326 return 24;
1327 case CODEC_ID_PCM_S32BE:
1328 case CODEC_ID_PCM_S32LE:
1329 case CODEC_ID_PCM_U32BE:
1330 case CODEC_ID_PCM_U32LE:
1331 return 32;
1332 default:
1333 return 0;
1334 }
1335 }
1336
1337 int av_get_bits_per_sample_format(enum SampleFormat sample_fmt) {
1338 switch (sample_fmt) {
1339 case SAMPLE_FMT_U8:
1340 return 8;
1341 case SAMPLE_FMT_S16:
1342 return 16;
1343 case SAMPLE_FMT_S24:
1344 return 24;
1345 case SAMPLE_FMT_S32:
1346 case SAMPLE_FMT_FLT:
1347 return 32;
1348 default:
1349 return 0;
1350 }
1351 }
1352
1353 #if !defined(HAVE_THREADS)
1354 int avcodec_thread_init(AVCodecContext *s, int thread_count){
1355 return -1;
1356 }
1357 #endif
1358
1359 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1360 {
1361 unsigned int n = 0;
1362
1363 while(v >= 0xff) {
1364 *s++ = 0xff;
1365 v -= 0xff;
1366 n++;
1367 }
1368 *s = v;
1369 n++;
1370 return n;
1371 }
1372
1373 /* Wrapper to work around the lack of mkstemp() on mingw/cygin.
1374 * Also, tries to create file in /tmp first, if possible.
1375 * *prefix can be a character constant; *filename will be allocated internally.
1376 * Returns file descriptor of opened file (or -1 on error)
1377 * and opened file name in **filename. */
1378 int av_tempfile(char *prefix, char **filename) {
1379 int fd=-1;
1380 #if !defined(HAVE_MKSTEMP)
1381 *filename = tempnam(".", prefix);
1382 #else
1383 size_t len = strlen(prefix) + 12; /* room for "/tmp/" and "XXXXXX\0" */
1384 *filename = av_malloc(len);
1385 #endif
1386 /* -----common section-----*/
1387 if (*filename == NULL) {
1388 av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot allocate file name\n");
1389 return -1;
1390 }
1391 #if !defined(HAVE_MKSTEMP)
1392 fd = open(*filename, O_RDWR | O_BINARY | O_CREAT, 0444);
1393 #else
1394 snprintf(*filename, len, "/tmp/%sXXXXXX", prefix);
1395 fd = mkstemp(*filename);
1396 if (fd < 0) {
1397 snprintf(*filename, len, "./%sXXXXXX", prefix);
1398 fd = mkstemp(*filename);
1399 }
1400 #endif
1401 /* -----common section-----*/
1402 if (fd < 0) {
1403 av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot open temporary file %s\n", *filename);
1404 return -1;
1405 }
1406 return fd; /* success */
1407 }
1408
1409 typedef struct {
1410 const char *abbr;
1411 int width, height;
1412 } VideoFrameSizeAbbr;
1413
1414 typedef struct {
1415 const char *abbr;
1416 int rate_num, rate_den;
1417 } VideoFrameRateAbbr;
1418
1419 static VideoFrameSizeAbbr video_frame_size_abbrs[] = {
1420 { "ntsc", 720, 480 },
1421 { "pal", 720, 576 },
1422 { "qntsc", 352, 240 }, /* VCD compliant NTSC */
1423 { "qpal", 352, 288 }, /* VCD compliant PAL */
1424 { "sntsc", 640, 480 }, /* square pixel NTSC */
1425 { "spal", 768, 576 }, /* square pixel PAL */
1426 { "film", 352, 240 },
1427 { "ntsc-film", 352, 240 },
1428 { "sqcif", 128, 96 },
1429 { "qcif", 176, 144 },
1430 { "cif", 352, 288 },
1431 { "4cif", 704, 576 },
1432 { "qqvga", 160, 120 },
1433 { "qvga", 320, 240 },
1434 { "vga", 640, 480 },
1435 { "svga", 800, 600 },
1436 { "xga", 1024, 768 },
1437 { "uxga", 1600,1200 },
1438 { "qxga", 2048,1536 },
1439 { "sxga", 1280,1024 },
1440 { "qsxga", 2560,2048 },
1441 { "hsxga", 5120,4096 },
1442 { "wvga", 852, 480 },
1443 { "wxga", 1366, 768 },
1444 { "wsxga", 1600,1024 },
1445 { "wuxga", 1920,1200 },
1446 { "woxga", 2560,1600 },
1447 { "wqsxga", 3200,2048 },
1448 { "wquxga", 3840,2400 },
1449 { "whsxga", 6400,4096 },
1450 { "whuxga", 7680,4800 },
1451 { "cga", 320, 200 },
1452 { "ega", 640, 350 },
1453 { "hd480", 852, 480 },
1454 { "hd720", 1280, 720 },
1455 { "hd1080", 1920,1080 },
1456 };
1457
1458 static VideoFrameRateAbbr video_frame_rate_abbrs[]= {
1459 { "ntsc", 30000, 1001 },
1460 { "pal", 25, 1 },
1461 { "qntsc", 30000, 1001 }, /* VCD compliant NTSC */
1462 { "qpal", 25, 1 }, /* VCD compliant PAL */
1463 { "sntsc", 30000, 1001 }, /* square pixel NTSC */
1464 { "spal", 25, 1 }, /* square pixel PAL */
1465 { "film", 24, 1 },
1466 { "ntsc-film", 24000, 1001 },
1467 };
1468
1469 int av_parse_video_frame_size(int *width_ptr, int *height_ptr, const char *str)
1470 {
1471 int i;
1472 int n = sizeof(video_frame_size_abbrs) / sizeof(VideoFrameSizeAbbr);
1473 const char *p;
1474 int frame_width = 0, frame_height = 0;
1475
1476 for(i=0;i<n;i++) {
1477 if (!strcmp(video_frame_size_abbrs[i].abbr, str)) {
1478 frame_width = video_frame_size_abbrs[i].width;
1479 frame_height = video_frame_size_abbrs[i].height;
1480 break;
1481 }
1482 }
1483 if (i == n) {
1484 p = str;
1485 frame_width = strtol(p, (char **)&p, 10);
1486 if (*p)
1487 p++;
1488 frame_height = strtol(p, (char **)&p, 10);
1489 }
1490 if (frame_width <= 0 || frame_height <= 0)
1491 return -1;
1492 *width_ptr = frame_width;
1493 *height_ptr = frame_height;
1494 return 0;
1495 }
1496
1497 int av_parse_video_frame_rate(AVRational *frame_rate, const char *arg)
1498 {
1499 int i;
1500 int n = sizeof(video_frame_rate_abbrs) / sizeof(VideoFrameRateAbbr);
1501 char* cp;
1502
1503 /* First, we check our abbreviation table */
1504 for (i = 0; i < n; ++i)
1505 if (!strcmp(video_frame_rate_abbrs[i].abbr, arg)) {
1506 frame_rate->num = video_frame_rate_abbrs[i].rate_num;
1507 frame_rate->den = video_frame_rate_abbrs[i].rate_den;
1508 return 0;
1509 }
1510
1511 /* Then, we try to parse it as fraction */
1512 cp = strchr(arg, '/');
1513 if (!cp)
1514 cp = strchr(arg, ':');
1515 if (cp) {
1516 char* cpp;
1517 frame_rate->num = strtol(arg, &cpp, 10);
1518 if (cpp != arg || cpp == cp)
1519 frame_rate->den = strtol(cp+1, &cpp, 10);
1520 else
1521 frame_rate->num = 0;
1522 }
1523 else {
1524 /* Finally we give up and parse it as double */
1525 AVRational time_base = av_d2q(strtod(arg, 0), DEFAULT_FRAME_RATE_BASE);
1526 frame_rate->den = time_base.den;
1527 frame_rate->num = time_base.num;
1528 }
1529 if (!frame_rate->num || !frame_rate->den)
1530 return -1;
1531 else
1532 return 0;
1533 }