remove unused, uninitialized free format frame size
[libav.git] / libavcodec / utils.c
CommitLineData
de6d9b64
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1/*
2 * utils for libavcodec
ff4ec49e 3 * Copyright (c) 2001 Fabrice Bellard.
8f2ab833 4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
de6d9b64 5 *
ff4ec49e
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6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
de6d9b64 10 *
ff4ec49e 11 * This library is distributed in the hope that it will be useful,
de6d9b64 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
ff4ec49e
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
de6d9b64 15 *
ff4ec49e
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16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
5509bffa 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
de6d9b64 19 */
115329f1 20
983e3246
MN
21/**
22 * @file utils.c
23 * utils.
24 */
115329f1 25
de6d9b64 26#include "avcodec.h"
3123dd79 27#include "dsputil.h"
1c2a8c7f 28#include "mpegvideo.h"
4c263142 29#include "integer.h"
6fd46414 30#include "opt.h"
43a80cce 31#include "crc.h"
9b879566 32#include <stdarg.h>
4c263142 33#include <limits.h>
860a40c8 34#include <float.h>
2f30a81d 35#ifdef __MINGW32__
1005f542
CH
36#include <fcntl.h>
37#endif
de6d9b64 38
44608ac7
RG
39const uint8_t ff_reverse[256]={
400x00,0x80,0x40,0xC0,0x20,0xA0,0x60,0xE0,0x10,0x90,0x50,0xD0,0x30,0xB0,0x70,0xF0,
410x08,0x88,0x48,0xC8,0x28,0xA8,0x68,0xE8,0x18,0x98,0x58,0xD8,0x38,0xB8,0x78,0xF8,
420x04,0x84,0x44,0xC4,0x24,0xA4,0x64,0xE4,0x14,0x94,0x54,0xD4,0x34,0xB4,0x74,0xF4,
430x0C,0x8C,0x4C,0xCC,0x2C,0xAC,0x6C,0xEC,0x1C,0x9C,0x5C,0xDC,0x3C,0xBC,0x7C,0xFC,
440x02,0x82,0x42,0xC2,0x22,0xA2,0x62,0xE2,0x12,0x92,0x52,0xD2,0x32,0xB2,0x72,0xF2,
450x0A,0x8A,0x4A,0xCA,0x2A,0xAA,0x6A,0xEA,0x1A,0x9A,0x5A,0xDA,0x3A,0xBA,0x7A,0xFA,
460x06,0x86,0x46,0xC6,0x26,0xA6,0x66,0xE6,0x16,0x96,0x56,0xD6,0x36,0xB6,0x76,0xF6,
470x0E,0x8E,0x4E,0xCE,0x2E,0xAE,0x6E,0xEE,0x1E,0x9E,0x5E,0xDE,0x3E,0xBE,0x7E,0xFE,
480x01,0x81,0x41,0xC1,0x21,0xA1,0x61,0xE1,0x11,0x91,0x51,0xD1,0x31,0xB1,0x71,0xF1,
490x09,0x89,0x49,0xC9,0x29,0xA9,0x69,0xE9,0x19,0x99,0x59,0xD9,0x39,0xB9,0x79,0xF9,
500x05,0x85,0x45,0xC5,0x25,0xA5,0x65,0xE5,0x15,0x95,0x55,0xD5,0x35,0xB5,0x75,0xF5,
510x0D,0x8D,0x4D,0xCD,0x2D,0xAD,0x6D,0xED,0x1D,0x9D,0x5D,0xDD,0x3D,0xBD,0x7D,0xFD,
520x03,0x83,0x43,0xC3,0x23,0xA3,0x63,0xE3,0x13,0x93,0x53,0xD3,0x33,0xB3,0x73,0xF3,
530x0B,0x8B,0x4B,0xCB,0x2B,0xAB,0x6B,0xEB,0x1B,0x9B,0x5B,0xDB,0x3B,0xBB,0x7B,0xFB,
540x07,0x87,0x47,0xC7,0x27,0xA7,0x67,0xE7,0x17,0x97,0x57,0xD7,0x37,0xB7,0x77,0xF7,
550x0F,0x8F,0x4F,0xCF,0x2F,0xAF,0x6F,0xEF,0x1F,0x9F,0x5F,0xDF,0x3F,0xBF,0x7F,0xFF,
56};
57
ddebfb15
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58static int volatile entangled_thread_counter=0;
59
18f77016 60void *av_mallocz(unsigned int size)
3123dd79
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61{
62 void *ptr;
115329f1 63
3123dd79
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64 ptr = av_malloc(size);
65 if (!ptr)
66 return NULL;
67 memset(ptr, 0, size);
68 return ptr;
69}
70
8e1e6f31
FB
71char *av_strdup(const char *s)
72{
73 char *ptr;
74 int len;
75 len = strlen(s) + 1;
76 ptr = av_malloc(len);
77 if (!ptr)
78 return NULL;
79 memcpy(ptr, s, len);
80 return ptr;
81}
82
83/**
84 * realloc which does nothing if the block is large enough
85 */
5c91a675 86void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size)
8e1e6f31 87{
115329f1 88 if(min_size < *size)
8e1e6f31 89 return ptr;
115329f1 90
0ecca7a4 91 *size= FFMAX(17*min_size/16 + 32, min_size);
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92
93 return av_realloc(ptr, *size);
94}
95
96
855ea723 97static unsigned int last_static = 0;
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98static unsigned int allocated_static = 0;
99static void** array_static = NULL;
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100
101/**
102 * allocation of static arrays - do not use for normal allocation.
103 */
104void *av_mallocz_static(unsigned int size)
855ea723 105{
855ea723 106 void *ptr = av_mallocz(size);
855ea723 107
115329f1 108 if(ptr){
4e39ab4c 109 array_static =av_fast_realloc(array_static, &allocated_static, sizeof(void*)*(last_static+1));
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110 if(!array_static)
111 return NULL;
8d1f2ba5 112 array_static[last_static++] = ptr;
855ea723 113 }
8d1f2ba5 114
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115 return ptr;
116}
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117
118/**
073c2593
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119 * same as above, but does realloc
120 */
121
122void *av_realloc_static(void *ptr, unsigned int size)
123{
124 int i;
125 if(!ptr)
126 return av_mallocz_static(size);
127 /* Look for the old ptr */
128 for(i = 0; i < last_static; i++) {
129 if(array_static[i] == ptr) {
130 array_static[i] = av_realloc(array_static[i], size);
131 return array_static[i];
132 }
133 }
134 return NULL;
135
136}
137
138/**
8d1f2ba5
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139 * free all static arrays and reset pointers to 0.
140 */
4cfbf61b 141void av_free_static(void)
855ea723 142{
8d1f2ba5
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143 while(last_static){
144 av_freep(&array_static[--last_static]);
855ea723 145 }
8d1f2ba5 146 av_freep(&array_static);
855ea723
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147}
148
81c5f887 149/**
32fbf33e
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150 * Call av_free_static automatically before it's too late
151 */
152
ceaf1909 153static void do_free(void) __attribute__ ((destructor));
32fbf33e 154
ceaf1909 155static void do_free(void)
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156{
157 av_free_static();
158}
159
160/**
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161 * Frees memory and sets the pointer to NULL.
162 * @param arg pointer to the pointer which should be freed
163 */
164void av_freep(void *arg)
4d7a0a05 165{
81c5f887 166 void **ptr= (void**)arg;
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167 av_free(*ptr);
168 *ptr = NULL;
169}
170
de6d9b64 171/* encoder management */
8b69867f 172AVCodec *first_avcodec = NULL;
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173
174void register_avcodec(AVCodec *format)
175{
176 AVCodec **p;
177 p = &first_avcodec;
178 while (*p != NULL) p = &(*p)->next;
179 *p = format;
180 format->next = NULL;
181}
182
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183void avcodec_set_dimensions(AVCodecContext *s, int width, int height){
184 s->coded_width = width;
185 s->coded_height= height;
186 s->width = -((-width )>>s->lowres);
187 s->height= -((-height)>>s->lowres);
188}
189
d90cf87b 190typedef struct InternalBuffer{
1e491e29 191 int last_pic_num;
d90cf87b 192 uint8_t *base[4];
1e491e29 193 uint8_t *data[4];
237e4938 194 int linesize[4];
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195}InternalBuffer;
196
197#define INTERNAL_BUFFER_SIZE 32
1e491e29 198
f0bbfc4a
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199#define ALIGN(x, a) (((x)+(a)-1)&~((a)-1))
200
201void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
115329f1
DB
202 int w_align= 1;
203 int h_align= 1;
204
f0bbfc4a
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205 switch(s->pix_fmt){
206 case PIX_FMT_YUV420P:
207 case PIX_FMT_YUV422:
ebb177dd 208 case PIX_FMT_UYVY422:
f0bbfc4a
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209 case PIX_FMT_YUV422P:
210 case PIX_FMT_YUV444P:
211 case PIX_FMT_GRAY8:
212 case PIX_FMT_YUVJ420P:
213 case PIX_FMT_YUVJ422P:
214 case PIX_FMT_YUVJ444P:
215 w_align= 16; //FIXME check for non mpeg style codecs and use less alignment
216 h_align= 16;
217 break;
218 case PIX_FMT_YUV411P:
f02be79d 219 case PIX_FMT_UYVY411:
f0bbfc4a
MN
220 w_align=32;
221 h_align=8;
222 break;
223 case PIX_FMT_YUV410P:
224 if(s->codec_id == CODEC_ID_SVQ1){
225 w_align=64;
226 h_align=64;
227 }
d99fbbf4
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228 case PIX_FMT_RGB555:
229 if(s->codec_id == CODEC_ID_RPZA){
230 w_align=4;
231 h_align=4;
232 }
233 case PIX_FMT_PAL8:
234 if(s->codec_id == CODEC_ID_SMC){
235 w_align=4;
236 h_align=4;
237 }
f0bbfc4a 238 break;
c31b8121
RT
239 case PIX_FMT_BGR24:
240 if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
241 w_align=4;
242 h_align=4;
243 }
244 break;
f0bbfc4a
MN
245 default:
246 w_align= 1;
247 h_align= 1;
248 break;
249 }
250
251 *width = ALIGN(*width , w_align);
252 *height= ALIGN(*height, h_align);
253}
254
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255int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h){
256 if((int)w>0 && (int)h>0 && (w+128)*(uint64_t)(h+128) < INT_MAX/4)
257 return 0;
115329f1 258
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MN
259 av_log(av_log_ctx, AV_LOG_ERROR, "picture size invalid (%ux%u)\n", w, h);
260 return -1;
261}
262
492cd3a9 263int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){
1e491e29 264 int i;
f0bbfc4a
MN
265 int w= s->width;
266 int h= s->height;
d90cf87b 267 InternalBuffer *buf;
237e4938 268 int *picture_number;
0ecca7a4 269
4e00e76b 270 assert(pic->data[0]==NULL);
d90cf87b 271 assert(INTERNAL_BUFFER_SIZE > s->internal_buffer_count);
1e491e29 272
0ecca7a4
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273 if(avcodec_check_dimensions(s,w,h))
274 return -1;
275
d90cf87b
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276 if(s->internal_buffer==NULL){
277 s->internal_buffer= av_mallocz(INTERNAL_BUFFER_SIZE*sizeof(InternalBuffer));
278 }
279#if 0
280 s->internal_buffer= av_fast_realloc(
115329f1
DB
281 s->internal_buffer,
282 &s->internal_buffer_size,
d90cf87b
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283 sizeof(InternalBuffer)*FFMAX(99, s->internal_buffer_count+1)/*FIXME*/
284 );
285#endif
115329f1 286
d90cf87b 287 buf= &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
237e4938
MN
288 picture_number= &(((InternalBuffer*)s->internal_buffer)[INTERNAL_BUFFER_SIZE-1]).last_pic_num; //FIXME ugly hack
289 (*picture_number)++;
115329f1 290
d90cf87b 291 if(buf->base[0]){
237e4938
MN
292 pic->age= *picture_number - buf->last_pic_num;
293 buf->last_pic_num= *picture_number;
1e491e29 294 }else{
f0bbfc4a 295 int h_chroma_shift, v_chroma_shift;
c7622f9a
MN
296 int pixel_size, size[3];
297 AVPicture picture;
298
1e491e29 299 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
f0bbfc4a
MN
300
301 avcodec_align_dimensions(s, &w, &h);
115329f1 302
1e491e29
MN
303 if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
304 w+= EDGE_WIDTH*2;
305 h+= EDGE_WIDTH*2;
306 }
c7622f9a
MN
307 avpicture_fill(&picture, NULL, s->pix_fmt, w, h);
308 pixel_size= picture.linesize[0]*8 / w;
309//av_log(NULL, AV_LOG_ERROR, "%d %d %d %d\n", (int)picture.data[1], w, h, s->pix_fmt);
310 assert(pixel_size>=1);
311 //FIXME next ensures that linesize= 2^x uvlinesize, thats needed because some MC code assumes it
312 if(pixel_size == 3*8)
313 w= ALIGN(w, STRIDE_ALIGN<<h_chroma_shift);
314 else
315 w= ALIGN(pixel_size*w, STRIDE_ALIGN<<(h_chroma_shift+3)) / pixel_size;
316 size[1] = avpicture_fill(&picture, NULL, s->pix_fmt, w, h);
317 size[0] = picture.linesize[0] * h;
318 size[1] -= size[0];
319 if(picture.data[2])
320 size[1]= size[2]= size[1]/2;
321 else
322 size[2]= 0;
323
d90cf87b 324 buf->last_pic_num= -256*256*256*64;
c7622f9a
MN
325 memset(buf->base, 0, sizeof(buf->base));
326 memset(buf->data, 0, sizeof(buf->data));
1e491e29 327
c7622f9a 328 for(i=0; i<3 && size[i]; i++){
2c19981a
MN
329 const int h_shift= i==0 ? 0 : h_chroma_shift;
330 const int v_shift= i==0 ? 0 : v_chroma_shift;
1e491e29 331
c7622f9a 332 buf->linesize[i]= picture.linesize[i];
1e491e29 333
c7622f9a 334 buf->base[i]= av_malloc(size[i]+16); //FIXME 16
d90cf87b 335 if(buf->base[i]==NULL) return -1;
c7622f9a
MN
336 memset(buf->base[i], 128, size[i]);
337
338 // no edge if EDEG EMU or not planar YUV, we check for PAL8 redundantly to protect against a exploitable bug regression ...
115329f1 339 if((s->flags&CODEC_FLAG_EMU_EDGE) || (s->pix_fmt == PIX_FMT_PAL8) || !size[2])
d90cf87b 340 buf->data[i] = buf->base[i];
1e491e29 341 else
3237f731 342 buf->data[i] = buf->base[i] + ALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift), STRIDE_ALIGN);
1e491e29
MN
343 }
344 pic->age= 256*256*256*64;
345 }
237e4938 346 pic->type= FF_BUFFER_TYPE_INTERNAL;
1e491e29 347
d90cf87b
MN
348 for(i=0; i<4; i++){
349 pic->base[i]= buf->base[i];
350 pic->data[i]= buf->data[i];
237e4938 351 pic->linesize[i]= buf->linesize[i];
d90cf87b
MN
352 }
353 s->internal_buffer_count++;
354
1e491e29
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355 return 0;
356}
357
492cd3a9 358void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
1e491e29 359 int i;
d90cf87b
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360 InternalBuffer *buf, *last, temp;
361
4e00e76b 362 assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
59c673d5 363 assert(s->internal_buffer_count);
d90cf87b 364
b1609412 365 buf = NULL; /* avoids warning */
d90cf87b
MN
366 for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize
367 buf= &((InternalBuffer*)s->internal_buffer)[i];
368 if(buf->data[0] == pic->data[0])
369 break;
370 }
371 assert(i < s->internal_buffer_count);
372 s->internal_buffer_count--;
373 last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
374
375 temp= *buf;
376 *buf= *last;
377 *last= temp;
378
379 for(i=0; i<3; i++){
1e491e29 380 pic->data[i]=NULL;
d90cf87b
MN
381// pic->base[i]=NULL;
382 }
1e491e29
MN
383//printf("R%X\n", pic->opaque);
384}
385
e1c2a5a0
RT
386int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
387 AVFrame temp_pic;
388 int i;
389
390 /* If no picture return a new buffer */
391 if(pic->data[0] == NULL) {
392 /* We will copy from buffer, so must be readable */
393 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
394 return s->get_buffer(s, pic);
395 }
396
397 /* If internal buffer type return the same buffer */
398 if(pic->type == FF_BUFFER_TYPE_INTERNAL)
399 return 0;
400
401 /*
402 * Not internal type and reget_buffer not overridden, emulate cr buffer
403 */
404 temp_pic = *pic;
405 for(i = 0; i < 4; i++)
406 pic->data[i] = pic->base[i] = NULL;
407 pic->opaque = NULL;
408 /* Allocate new frame */
409 if (s->get_buffer(s, pic))
410 return -1;
411 /* Copy image data from old buffer to new buffer */
412 img_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
413 s->height);
414 s->release_buffer(s, &temp_pic); // Release old frame
415 return 0;
416}
417
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418int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count){
419 int i;
420
421 for(i=0; i<count; i++){
422 int r= func(c, arg[i]);
423 if(ret) ret[i]= r;
424 }
425 return 0;
426}
427
494c56d3 428enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt){
a33c7159
MN
429 return fmt[0];
430}
431
43465395
MN
432static const char* context_to_name(void* ptr) {
433 AVCodecContext *avc= ptr;
434
435 if(avc && avc->codec && avc->codec->name)
115329f1 436 return avc->codec->name;
43465395
MN
437 else
438 return "NULL";
439}
440
66acccf0 441#define OFFSET(x) offsetof(AVCodecContext,x)
860a40c8 442#define DEFAULT 0 //should be NAN but it doesnt work as its not a constant in glibc as required by ANSI/ISO C
8bbf6db9
MN
443//these names are too long to be readable
444#define V AV_OPT_FLAG_VIDEO_PARAM
445#define A AV_OPT_FLAG_AUDIO_PARAM
446#define S AV_OPT_FLAG_SUBTITLE_PARAM
115329f1 447#define E AV_OPT_FLAG_ENCODING_PARAM
8bbf6db9 448#define D AV_OPT_FLAG_DECODING_PARAM
860a40c8 449
0b97eea3 450#define AV_CODEC_DEFAULT_BITRATE 200*1000
8c3dd5dc 451
62a05b5b 452static const AVOption options[]={
5cc9b87f 453{"bit_rate", "set video bitrate (in bits/s)", OFFSET(bit_rate), FF_OPT_TYPE_INT, AV_CODEC_DEFAULT_BITRATE, INT_MIN, INT_MAX, V|A|E},
0b97eea3 454{"bit_rate_tolerance", "set video bitrate tolerance (in bits/s)", OFFSET(bit_rate_tolerance), FF_OPT_TYPE_INT, AV_CODEC_DEFAULT_BITRATE*20, INT_MIN, INT_MAX, V|E},
637b5326 455{"flags", NULL, OFFSET(flags), FF_OPT_TYPE_FLAGS, DEFAULT, INT_MIN, INT_MAX, V|A|E|D, "flags"},
fac862c6
MN
456{"mv4", "use four motion vector by macroblock (mpeg4)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_4MV, INT_MIN, INT_MAX, V|E, "flags"},
457{"obmc", "use overlapped block motion compensation (h263+)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_OBMC, INT_MIN, INT_MAX, V|E, "flags"},
458{"qpel", "use 1/4 pel motion compensation", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_QPEL, INT_MIN, INT_MAX, V|E, "flags"},
459{"loop", "use loop filter", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_LOOP_FILTER, INT_MIN, INT_MAX, V|E, "flags"},
460{"qscale", "use fixed qscale", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_QSCALE, INT_MIN, INT_MAX, 0, "flags"},
461{"gmc", "use gmc", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_GMC, INT_MIN, INT_MAX, V|E, "flags"},
462{"mv0", "always try a mb with mv=<0,0>", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_MV0, INT_MIN, INT_MAX, V|E, "flags"},
463{"part", "use data partitioning", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PART, INT_MIN, INT_MAX, V|E, "flags"},
464{"input_preserved", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG_INPUT_PRESERVED, INT_MIN, INT_MAX, 0, "flags"},
465{"pass1", "use internal 2pass ratecontrol in first pass mode", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PASS1, INT_MIN, INT_MAX, 0, "flags"},
466{"pass2", "use internal 2pass ratecontrol in second pass mode", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PASS2, INT_MIN, INT_MAX, 0, "flags"},
467{"extern_huff", "use external huffman table (for mjpeg)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_EXTERN_HUFF, INT_MIN, INT_MAX, 0, "flags"},
468{"gray", "only decode/encode grayscale", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_GRAY, INT_MIN, INT_MAX, V|E|D, "flags"},
469{"emu_edge", "don't draw edges", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_EMU_EDGE, INT_MIN, INT_MAX, 0, "flags"},
470{"psnr", "error[?] variables will be set during encoding", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PSNR, INT_MIN, INT_MAX, V|E, "flags"},
471{"truncated", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG_TRUNCATED, INT_MIN, INT_MAX, 0, "flags"},
472{"naq", "normalize adaptive quantization", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_NORMALIZE_AQP, INT_MIN, INT_MAX, V|E, "flags"},
473{"ildct", "use interlaced dct", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_INTERLACED_DCT, INT_MIN, INT_MAX, V|E, "flags"},
474{"low_delay", "force low delay", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_LOW_DELAY, INT_MIN, INT_MAX, V|D, "flags"},
475{"alt", "enable alternate scantable (mpeg2/mpeg4)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_ALT_SCAN, INT_MIN, INT_MAX, V|E, "flags"},
476{"trell", "use trellis quantization", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_TRELLIS_QUANT, INT_MIN, INT_MAX, V|E, "flags"},
477{"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"},
478{"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"},
479{"aic", "h263 advanced intra coding / mpeg4 ac prediction", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_AC_PRED, INT_MIN, INT_MAX, V|E, "flags"},
480{"umv", "use unlimited motion vectors", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_H263P_UMV, INT_MIN, INT_MAX, V|E, "flags"},
481{"cbp", "use rate distortion optimization for cbp", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_CBP_RD, INT_MIN, INT_MAX, V|E, "flags"},
8f196b14 482{"qprd", "use rate distortion optimization for qp selection", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_QP_RD, INT_MIN, INT_MAX, V|E, "flags"},
fac862c6
MN
483{"aiv", "h263 alternative inter vlc", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_H263P_AIV, INT_MIN, INT_MAX, V|E, "flags"},
484{"slice", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG_H263P_SLICE_STRUCT, INT_MIN, INT_MAX, V|E, "flags"},
485{"ilme", "interlaced motion estimation", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_INTERLACED_ME, INT_MIN, INT_MAX, V|E, "flags"},
486{"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"},
8f196b14 487{"cgop", "closed gop", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_CLOSED_GOP, INT_MIN, INT_MAX, V|E, "flags"},
fac862c6
MN
488{"fast", "allow non spec compliant speedup tricks", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_FAST, INT_MIN, INT_MAX, V|E, "flags2"},
489{"sgop", "strictly enforce gop size", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_STRICT_GOP, INT_MIN, INT_MAX, V|E, "flags2"},
490{"noout", "skip bitstream encoding", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_NO_OUTPUT, INT_MIN, INT_MAX, V|E, "flags2"},
491{"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"},
860a40c8 492{"sub_id", NULL, OFFSET(sub_id), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
5cc9b87f 493{"me_method", "set motion estimation method", OFFSET(me_method), FF_OPT_TYPE_INT, ME_EPZS, INT_MIN, INT_MAX, V|E, "me_method"},
860a40c8
MN
494{"extradata_size", NULL, OFFSET(extradata_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
495{"time_base", NULL, OFFSET(time_base), FF_OPT_TYPE_RATIONAL, DEFAULT, INT_MIN, INT_MAX},
0b97eea3 496{"gop_size", "set the group of picture size", OFFSET(gop_size), FF_OPT_TYPE_INT, 12, INT_MIN, INT_MAX, V|E},
860a40c8 497{"rate_emu", NULL, OFFSET(rate_emu), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
5cc9b87f 498{"sample_rate", "set audio sampling rate (in Hz)", OFFSET(sample_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
0b97eea3 499{"channels", "set number of audio channels", OFFSET(channels), FF_OPT_TYPE_INT, 1, INT_MIN, INT_MAX},
14f0c8e2 500{"cutoff", "set cutoff bandwidth", OFFSET(cutoff), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, A|E},
c6375bf2 501{"frame_size", NULL, OFFSET(frame_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, A|E},
860a40c8
MN
502{"frame_number", NULL, OFFSET(frame_number), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
503{"real_pict_num", NULL, OFFSET(real_pict_num), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
504{"delay", NULL, OFFSET(delay), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
5cc9b87f 505{"qcompress", "video quantiser scale compression (VBR)", OFFSET(qcompress), FF_OPT_TYPE_FLOAT, 0.5, FLT_MIN, FLT_MAX, V|E},
0b97eea3 506{"qblur", "video quantiser scale blur (VBR)", OFFSET(qblur), FF_OPT_TYPE_FLOAT, 0.5, FLT_MIN, FLT_MAX, V|E},
5cc9b87f
PI
507{"qmin", "min video quantiser scale (VBR)", OFFSET(qmin), FF_OPT_TYPE_INT, 2, 0, INT_MAX, V|E},
508{"qmax", "max video quantiser scale (VBR)", OFFSET(qmax), FF_OPT_TYPE_INT, 31, 0, INT_MAX, V|E},
509{"max_qdiff", "max difference between the quantiser scale (VBR)", OFFSET(max_qdiff), FF_OPT_TYPE_INT, 3, INT_MIN, INT_MAX, V|E},
510{"max_b_frames", "use 'frames' B frames", OFFSET(max_b_frames), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
511{"b_quant_factor", "qp factor between p and b frames", OFFSET(b_quant_factor), FF_OPT_TYPE_FLOAT, 1.25, FLT_MIN, FLT_MAX, V|E},
8bbf6db9 512{"rc_strategy", NULL, OFFSET(rc_strategy), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
c9ab8df8 513{"b_strategy", NULL, OFFSET(b_frame_strategy), FF_OPT_TYPE_INT, 0, INT_MIN, INT_MAX, V|E},
8bbf6db9 514{"hurry_up", NULL, OFFSET(hurry_up), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
860a40c8
MN
515{"rtp_mode", NULL, OFFSET(rtp_mode), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
516{"rtp_payload_size", NULL, OFFSET(rtp_payload_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
517{"mv_bits", NULL, OFFSET(mv_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
518{"header_bits", NULL, OFFSET(header_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
519{"i_tex_bits", NULL, OFFSET(i_tex_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
520{"p_tex_bits", NULL, OFFSET(p_tex_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
521{"i_count", NULL, OFFSET(i_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
522{"p_count", NULL, OFFSET(p_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
523{"skip_count", NULL, OFFSET(skip_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
524{"misc_bits", NULL, OFFSET(misc_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
525{"frame_bits", NULL, OFFSET(frame_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
526{"codec_tag", NULL, OFFSET(codec_tag), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
7facadb0 527{"bugs", "workaround not auto detected encoder bugs", OFFSET(workaround_bugs), FF_OPT_TYPE_FLAGS, FF_BUG_AUTODETECT, INT_MIN, INT_MAX, V|D, "bug"},
fac862c6
MN
528{"autodetect", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_AUTODETECT, INT_MIN, INT_MAX, V|D, "bug"},
529{"old_msmpeg4", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_OLD_MSMPEG4, INT_MIN, INT_MAX, V|D, "bug"},
530{"xvid_ilace", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_XVID_ILACE, INT_MIN, INT_MAX, V|D, "bug"},
531{"ump4", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_UMP4, INT_MIN, INT_MAX, V|D, "bug"},
532{"no_padding", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_NO_PADDING, INT_MIN, INT_MAX, V|D, "bug"},
533{"amv", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_AMV, INT_MIN, INT_MAX, V|D, "bug"},
534{"ac_vlc", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_AC_VLC, INT_MIN, INT_MAX, V|D, "bug"},
535{"qpel_chroma", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_QPEL_CHROMA, INT_MIN, INT_MAX, V|D, "bug"},
536{"std_qpel", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_STD_QPEL, INT_MIN, INT_MAX, V|D, "bug"},
537{"qpel_chroma2", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_QPEL_CHROMA2, INT_MIN, INT_MAX, V|D, "bug"},
538{"direct_blocksize", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_DIRECT_BLOCKSIZE, INT_MIN, INT_MAX, V|D, "bug"},
539{"edge", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_EDGE, INT_MIN, INT_MAX, V|D, "bug"},
540{"hpel_chroma", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_HPEL_CHROMA, INT_MIN, INT_MAX, V|D, "bug"},
541{"dc_clip", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_DC_CLIP, INT_MIN, INT_MAX, V|D, "bug"},
542{"ms", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_MS, INT_MIN, INT_MAX, V|D, "bug"},
543{"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},
544{"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},
5cc9b87f 545{"strict", "how strictly to follow the standards", OFFSET(strict_std_compliance), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "strict"},
fac862c6
MN
546{"very", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_VERY_STRICT, INT_MIN, INT_MAX, V|E, "strict"},
547{"strict", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_STRICT, INT_MIN, INT_MAX, V|E, "strict"},
548{"normal", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_NORMAL, INT_MIN, INT_MAX, V|E, "strict"},
549{"inofficial", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_INOFFICIAL, INT_MIN, INT_MAX, V|E, "strict"},
550{"experimental", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_EXPERIMENTAL, INT_MIN, INT_MAX, V|E, "strict"},
5cc9b87f 551{"b_quant_offset", "qp offset between p and b frames", OFFSET(b_quant_offset), FF_OPT_TYPE_FLOAT, 1.25, FLT_MIN, FLT_MAX, V|E},
8f196b14 552{"er", NULL, OFFSET(error_resilience), FF_OPT_TYPE_INT, FF_ER_CAREFUL, INT_MIN, INT_MAX, V|D, "er"},
fac862c6
MN
553{"careful", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_CAREFUL, INT_MIN, INT_MAX, V|D, "er"},
554{"compliant", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_COMPLIANT, INT_MIN, INT_MAX, V|D, "er"},
555{"aggressive", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_AGGRESSIVE, INT_MIN, INT_MAX, V|D, "er"},
556{"very_aggressive", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_VERY_AGGRESSIVE, INT_MIN, INT_MAX, V|D, "er"},
860a40c8
MN
557{"has_b_frames", NULL, OFFSET(has_b_frames), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
558{"block_align", NULL, OFFSET(block_align), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
559{"parse_only", NULL, OFFSET(parse_only), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
8bbf6db9 560{"mpeg_quant", NULL, OFFSET(mpeg_quant), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
860a40c8
MN
561{"stats_out", NULL, OFFSET(stats_out), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX},
562{"stats_in", NULL, OFFSET(stats_in), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX},
5cc9b87f 563{"rc_qsquish", "how to keep quantiser between qmin and qmax (0 = clip, 1 = use differentiable function)", OFFSET(rc_qsquish), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
8bbf6db9
MN
564{"rc_qmod_amp", NULL, OFFSET(rc_qmod_amp), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
565{"rc_qmod_freq", NULL, OFFSET(rc_qmod_freq), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
860a40c8 566{"rc_override_count", NULL, OFFSET(rc_override_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
5cc9b87f
PI
567{"rc_eq", "set rate control equation", OFFSET(rc_eq), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX, V|E},
568{"rc_max_rate", "set max video bitrate tolerance (in bits/s)", OFFSET(rc_max_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
569{"rc_min_rate", "set min video bitrate tolerance (in bits/s)", OFFSET(rc_min_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
570{"rc_buffer_size", "set ratecontrol buffer size (in bits)", OFFSET(rc_buffer_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
0b97eea3 571{"rc_buf_aggressivity", NULL, OFFSET(rc_buffer_aggressivity), FF_OPT_TYPE_FLOAT, 1.0, FLT_MIN, FLT_MAX, V|E},
5cc9b87f
PI
572{"i_quant_factor", "qp factor between p and i frames", OFFSET(i_quant_factor), FF_OPT_TYPE_FLOAT, -0.8, FLT_MIN, FLT_MAX, V|E},
573{"i_quant_offset", "qp offset between p and i frames", OFFSET(i_quant_offset), FF_OPT_TYPE_FLOAT, 0.0, FLT_MIN, FLT_MAX, V|E},
574{"rc_initial_cplx", "initial complexity for 1-pass encoding", OFFSET(rc_initial_cplx), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
637b5326 575{"dct", NULL, OFFSET(dct_algo), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, V|E, "dct"},
fac862c6
MN
576{"auto", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_AUTO, INT_MIN, INT_MAX, V|E, "dct"},
577{"fastint", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_FASTINT, INT_MIN, INT_MAX, V|E, "dct"},
578{"int", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_INT, INT_MIN, INT_MAX, V|E, "dct"},
579{"mmx", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_MMX, INT_MIN, INT_MAX, V|E, "dct"},
580{"mlib", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_MLIB, INT_MIN, INT_MAX, V|E, "dct"},
581{"altivec", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_ALTIVEC, INT_MIN, INT_MAX, V|E, "dct"},
582{"faan", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_FAAN, INT_MIN, INT_MAX, V|E, "dct"},
8f196b14
MN
583{"lumi_mask", "lumimasking", OFFSET(lumi_masking), FF_OPT_TYPE_FLOAT, 0, FLT_MIN, FLT_MAX, V|E},
584{"tcplx_mask", "temporal complexity masking", OFFSET(temporal_cplx_masking), FF_OPT_TYPE_FLOAT, 0, FLT_MIN, FLT_MAX, V|E},
585{"scplx_mask", "spatial complexity masking", OFFSET(spatial_cplx_masking), FF_OPT_TYPE_FLOAT, 0, FLT_MIN, FLT_MAX, V|E},
586{"p_mask", "inter masking", OFFSET(p_masking), FF_OPT_TYPE_FLOAT, 0, FLT_MIN, FLT_MAX, V|E},
587{"dark_mask", "darkness masking", OFFSET(dark_masking), FF_OPT_TYPE_FLOAT, 0, FLT_MIN, FLT_MAX, V|E},
860a40c8 588{"unused", NULL, OFFSET(unused), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
637b5326 589{"idct", NULL, OFFSET(idct_algo), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, V|E|D, "idct"},
fac862c6
MN
590{"auto", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_AUTO, INT_MIN, INT_MAX, V|E|D, "idct"},
591{"int", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_INT, INT_MIN, INT_MAX, V|E|D, "idct"},
592{"simple", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLE, INT_MIN, INT_MAX, V|E|D, "idct"},
593{"simplemmx", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLEMMX, INT_MIN, INT_MAX, V|E|D, "idct"},
594{"libmpeg2mmx", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_LIBMPEG2MMX, INT_MIN, INT_MAX, V|E|D, "idct"},
595{"ps2", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_PS2, INT_MIN, INT_MAX, V|E|D, "idct"},
596{"mlib", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_MLIB, INT_MIN, INT_MAX, V|E|D, "idct"},
597{"arm", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_ARM, INT_MIN, INT_MAX, V|E|D, "idct"},
598{"altivec", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_ALTIVEC, INT_MIN, INT_MAX, V|E|D, "idct"},
599{"sh4", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SH4, INT_MIN, INT_MAX, V|E|D, "idct"},
600{"simplearm", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLEARM, INT_MIN, INT_MAX, V|E|D, "idct"},
601{"h264", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_H264, INT_MIN, INT_MAX, V|E|D, "idct"},
602{"vp3", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_VP3, INT_MIN, INT_MAX, V|E|D, "idct"},
603{"ipp", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_IPP, INT_MIN, INT_MAX, V|E|D, "idct"},
604{"xvidmmx", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_XVIDMMX, INT_MIN, INT_MAX, V|E|D, "idct"},
860a40c8 605{"slice_count", NULL, OFFSET(slice_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
8f196b14 606{"ec", NULL, OFFSET(error_concealment), FF_OPT_TYPE_FLAGS, 3, INT_MIN, INT_MAX, V|D, "ec"},
fac862c6
MN
607{"guess_mvs", NULL, 0, FF_OPT_TYPE_CONST, FF_EC_GUESS_MVS, INT_MIN, INT_MAX, V|D, "ec"},
608{"deblock", NULL, 0, FF_OPT_TYPE_CONST, FF_EC_DEBLOCK, INT_MIN, INT_MAX, V|D, "ec"},
860a40c8 609{"bits_per_sample", NULL, OFFSET(bits_per_sample), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
8f196b14 610{"pred", "prediction method", OFFSET(prediction_method), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "pred"},
fac862c6
MN
611{"left", NULL, 0, FF_OPT_TYPE_CONST, FF_PRED_LEFT, INT_MIN, INT_MAX, V|E, "pred"},
612{"plane", NULL, 0, FF_OPT_TYPE_CONST, FF_PRED_PLANE, INT_MIN, INT_MAX, V|E, "pred"},
613{"median", NULL, 0, FF_OPT_TYPE_CONST, FF_PRED_MEDIAN, INT_MIN, INT_MAX, V|E, "pred"},
637b5326
MN
614{"aspect", NULL, OFFSET(sample_aspect_ratio), FF_OPT_TYPE_RATIONAL, DEFAULT, 0, 10, V|E},
615{"debug", "print specific debug info", OFFSET(debug), FF_OPT_TYPE_FLAGS, DEFAULT, 0, INT_MAX, V|A|S|E|D, "debug"},
fac862c6
MN
616{"pict", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_PICT_INFO, INT_MIN, INT_MAX, V|D, "debug"},
617{"rc", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_RC, INT_MIN, INT_MAX, V|E, "debug"},
618{"bitstream", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_BITSTREAM, INT_MIN, INT_MAX, V|D, "debug"},
619{"mb_type", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_MB_TYPE, INT_MIN, INT_MAX, V|D, "debug"},
620{"qp", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_QP, INT_MIN, INT_MAX, V|D, "debug"},
621{"mv", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_MV, INT_MIN, INT_MAX, V|D, "debug"},
622{"dct_coeff", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_DCT_COEFF, INT_MIN, INT_MAX, V|D, "debug"},
623{"skip", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_SKIP, INT_MIN, INT_MAX, V|D, "debug"},
624{"startcode", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_STARTCODE, INT_MIN, INT_MAX, V|D, "debug"},
625{"pts", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_PTS, INT_MIN, INT_MAX, V|D, "debug"},
626{"er", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_ER, INT_MIN, INT_MAX, V|D, "debug"},
627{"mmco", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_MMCO, INT_MIN, INT_MAX, V|D, "debug"},
628{"bugs", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_BUGS, INT_MIN, INT_MAX, V|D, "debug"},
629{"vis_qp", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_QP, INT_MIN, INT_MAX, V|D, "debug"},
630{"vis_mb_type", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MB_TYPE, INT_MIN, INT_MAX, V|D, "debug"},
637b5326 631{"vismv", "visualize motion vectors", OFFSET(debug_mv), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, V|D, "debug_mv"},
fac862c6
MN
632{"pf", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MV_P_FOR, INT_MIN, INT_MAX, V|D, "debug_mv"},
633{"bf", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MV_B_FOR, INT_MIN, INT_MAX, V|D, "debug_mv"},
634{"bb", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MV_B_BACK, INT_MIN, INT_MAX, V|D, "debug_mv"},
8bbf6db9
MN
635{"mb_qmin", NULL, OFFSET(mb_qmin), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
636{"mb_qmax", NULL, OFFSET(mb_qmax), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
fac862c6
MN
637{"cmp", "full pel me compare function", OFFSET(me_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
638{"subcmp", "sub pel me compare function", OFFSET(me_sub_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
ec9127c4 639{"mbcmp", "macroblock compare function", OFFSET(mb_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
8c3dd5dc 640{"ildctcmp", "interlaced dct compare function", OFFSET(ildct_cmp), FF_OPT_TYPE_INT, FF_CMP_VSAD, INT_MIN, INT_MAX, V|E, "cmp_func"},
ec9127c4 641{"dia_size", NULL, OFFSET(dia_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
8bbf6db9 642{"last_pred", NULL, OFFSET(last_predictor_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
5cc9b87f 643{"preme", "pre motion estimation", OFFSET(pre_me), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
ec9127c4 644{"precmp", "pre motion estimation compare function", OFFSET(me_pre_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
fac862c6
MN
645{"sad", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_SAD, INT_MIN, INT_MAX, V|E, "cmp_func"},
646{"sse", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_SSE, INT_MIN, INT_MAX, V|E, "cmp_func"},
647{"satd", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_SATD, INT_MIN, INT_MAX, V|E, "cmp_func"},
648{"dct", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_DCT, INT_MIN, INT_MAX, V|E, "cmp_func"},
649{"psnr", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_PSNR, INT_MIN, INT_MAX, V|E, "cmp_func"},
650{"bit", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_BIT, INT_MIN, INT_MAX, V|E, "cmp_func"},
651{"rd", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_RD, INT_MIN, INT_MAX, V|E, "cmp_func"},
652{"zero", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_ZERO, INT_MIN, INT_MAX, V|E, "cmp_func"},
653{"vsad", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_VSAD, INT_MIN, INT_MAX, V|E, "cmp_func"},
654{"vsse", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_VSSE, INT_MIN, INT_MAX, V|E, "cmp_func"},
655{"nsse", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_NSSE, INT_MIN, INT_MAX, V|E, "cmp_func"},
3a6fc8fa 656#ifdef CONFIG_SNOW_ENCODER
fac862c6
MN
657{"w53", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_W53, INT_MIN, INT_MAX, V|E, "cmp_func"},
658{"w97", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_W97, INT_MIN, INT_MAX, V|E, "cmp_func"},
3a6fc8fa 659#endif
fac862c6
MN
660{"dctmax", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_DCTMAX, INT_MIN, INT_MAX, V|E, "cmp_func"},
661{"chroma", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_CHROMA, INT_MIN, INT_MAX, V|E, "cmp_func"},
8bbf6db9 662{"pre_dia_size", NULL, OFFSET(pre_dia_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
8c3dd5dc 663{"subq", "sub pel motion estimation quality", OFFSET(me_subpel_quality), FF_OPT_TYPE_INT, 8, INT_MIN, INT_MAX, V|E},
860a40c8 664{"dtg_active_format", NULL, OFFSET(dtg_active_format), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
5cc9b87f
PI
665{"me_range", "limit motion vectors range (1023 for DivX player)", OFFSET(me_range), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
666{"ibias", "intra quant bias", OFFSET(intra_quant_bias), FF_OPT_TYPE_INT, FF_DEFAULT_QUANT_BIAS, INT_MIN, INT_MAX, V|E},
667{"pbias", "inter quant bias", OFFSET(inter_quant_bias), FF_OPT_TYPE_INT, FF_DEFAULT_QUANT_BIAS, INT_MIN, INT_MAX, V|E},
860a40c8
MN
668{"color_table_id", NULL, OFFSET(color_table_id), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
669{"internal_buffer_count", NULL, OFFSET(internal_buffer_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
670{"global_quality", NULL, OFFSET(global_quality), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
ec9127c4 671{"coder", NULL, OFFSET(coder_type), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "coder"},
8f196b14
MN
672{"vlc", "variable length coder / huffman coder", 0, FF_OPT_TYPE_CONST, FF_CODER_TYPE_VLC, INT_MIN, INT_MAX, V|E, "coder"},
673{"ac", "arithmetic coder", 0, FF_OPT_TYPE_CONST, FF_CODER_TYPE_AC, INT_MIN, INT_MAX, V|E, "coder"},
674{"context", "context model", OFFSET(context_model), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
860a40c8
MN
675{"slice_flags", NULL, OFFSET(slice_flags), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
676{"xvmc_acceleration", NULL, OFFSET(xvmc_acceleration), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
ec9127c4 677{"mbd", NULL, OFFSET(mb_decision), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "mbd"},
fac862c6
MN
678{"simple", NULL, 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_SIMPLE, INT_MIN, INT_MAX, V|E, "mbd"},
679{"bits", NULL, 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_BITS, INT_MIN, INT_MAX, V|E, "mbd"},
680{"rd", NULL, 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_RD, INT_MIN, INT_MAX, V|E, "mbd"},
860a40c8 681{"stream_codec_tag", NULL, OFFSET(stream_codec_tag), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
5cc9b87f
PI
682{"sc_threshold", "scene change threshold", OFFSET(scenechange_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
683{"lmin", "min lagrange factor (VBR)", OFFSET(lmin), FF_OPT_TYPE_INT, 2*FF_QP2LAMBDA, 0, INT_MAX, V|E},
684{"lmax", "max lagrange factor (VBR)", OFFSET(lmax), FF_OPT_TYPE_INT, 31*FF_QP2LAMBDA, 0, INT_MAX, V|E},
8f196b14 685{"nr", "noise reduction", OFFSET(noise_reduction), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
8bbf6db9
MN
686{"rc_init_occupancy", NULL, OFFSET(rc_initial_buffer_occupancy), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
687{"inter_threshold", NULL, OFFSET(inter_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
8c3dd5dc 688{"flags2", NULL, OFFSET(flags2), FF_OPT_TYPE_FLAGS, CODEC_FLAG2_FASTPSKIP, INT_MIN, INT_MAX, V|A|E|D, "flags2"},
860a40c8 689{"error_rate", NULL, OFFSET(error_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
ec9127c4 690{"antialias", NULL, OFFSET(antialias_algo), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D, "aa"},
fac862c6
MN
691{"auto", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_AUTO, INT_MIN, INT_MAX, V|D, "aa"},
692{"fastint", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_FASTINT, INT_MIN, INT_MAX, V|D, "aa"},
693{"int", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_INT, INT_MIN, INT_MAX, V|D, "aa"},
694{"float", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_FLOAT, INT_MIN, INT_MAX, V|D, "aa"},
8f196b14 695{"qns", "quantizer noise shaping", OFFSET(quantizer_noise_shaping), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
8c3dd5dc 696{"thread_count", NULL, OFFSET(thread_count), FF_OPT_TYPE_INT, 1, INT_MIN, INT_MAX, V|E|D},
637b5326 697{"me_threshold", "motion estimaton threshold", OFFSET(me_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
5cc9b87f 698{"mb_threshold", "macroblock threshold", OFFSET(mb_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
0b97eea3 699{"dc", "intra_dc_precision", OFFSET(intra_dc_precision), FF_OPT_TYPE_INT, 8, INT_MIN, INT_MAX, V|E},
8f196b14 700{"nssew", "nsse weight", OFFSET(nsse_weight), FF_OPT_TYPE_INT, 8, INT_MIN, INT_MAX, V|E},
8bbf6db9
MN
701{"skip_top", NULL, OFFSET(skip_top), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
702{"skip_bottom", NULL, OFFSET(skip_bottom), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
ec9127c4 703{"profile", NULL, OFFSET(profile), FF_OPT_TYPE_INT, FF_PROFILE_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "profile"},
fac862c6 704{"unknown", NULL, 0, FF_OPT_TYPE_CONST, FF_PROFILE_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "profile"},
ec9127c4 705{"level", NULL, OFFSET(level), FF_OPT_TYPE_INT, FF_LEVEL_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "level"},
fac862c6 706{"unknown", NULL, 0, FF_OPT_TYPE_CONST, FF_LEVEL_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "level"},
637b5326 707{"lowres", NULL, OFFSET(lowres), FF_OPT_TYPE_INT, 0, 0, INT_MAX, V|D},
5cc9b87f
PI
708{"frame_skip_threshold", "frame skip threshold", OFFSET(frame_skip_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
709{"frame_skip_factor", "frame skip factor", OFFSET(frame_skip_factor), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
710{"frame_skip_exp", "frame skip exponent", OFFSET(frame_skip_exp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
d4de20d1 711{"skipcmp", "frame skip compare function", OFFSET(frame_skip_cmp), FF_OPT_TYPE_INT, FF_CMP_DCTMAX, INT_MIN, INT_MAX, V|E, "cmp_func"},
8bbf6db9 712{"border_mask", NULL, OFFSET(border_masking), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
5cc9b87f
PI
713{"mb_lmin", "min macroblock quantiser scale (VBR)", OFFSET(mb_lmin), FF_OPT_TYPE_INT, FF_QP2LAMBDA * 2, INT_MIN, INT_MAX, V|E},
714{"mb_lmax", "max macroblock quantiser scale (VBR)", OFFSET(mb_lmax), FF_OPT_TYPE_INT, FF_QP2LAMBDA * 31, INT_MIN, INT_MAX, V|E},
715{"me_penalty_compensation", "motion estimation bitrate penalty compensation", OFFSET(me_penalty_compensation), FF_OPT_TYPE_INT, 256, INT_MIN, INT_MAX, V|E},
316a2ec8 716{"bidir_refine", NULL, OFFSET(bidir_refine), FF_OPT_TYPE_INT, DEFAULT, 0, 4, V|E},
e8501c93 717{"brd_scale", NULL, OFFSET(brd_scale), FF_OPT_TYPE_INT, DEFAULT, 0, 10, V|E},
58f7833e 718{"crf", NULL, OFFSET(crf), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
8c3dd5dc
PI
719{"cqp", NULL, OFFSET(cqp), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, V|E},
720{"keyint_min", NULL, OFFSET(keyint_min), FF_OPT_TYPE_INT, 25, INT_MIN, INT_MAX, V|E},
721{"refs", NULL, OFFSET(refs), FF_OPT_TYPE_INT, 1, INT_MIN, INT_MAX, V|E},
58f7833e
RS
722{"chromaoffset", NULL, OFFSET(chromaoffset), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
723{"bframebias", NULL, OFFSET(bframebias), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
696d6889 724{"trellis", NULL, OFFSET(trellis), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|A|E},
8c3dd5dc 725{"directpred", NULL, OFFSET(directpred), FF_OPT_TYPE_INT, 2, INT_MIN, INT_MAX, V|E},
58f7833e
RS
726{"bpyramid", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_BPYRAMID, INT_MIN, INT_MAX, V|E, "flags2"},
727{"wpred", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_WPRED, INT_MIN, INT_MAX, V|E, "flags2"},
728{"mixed_refs", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_MIXED_REFS, INT_MIN, INT_MAX, V|E, "flags2"},
729{"8x8dct", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_8X8DCT, INT_MIN, INT_MAX, V|E, "flags2"},
730{"fastpskip", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_FASTPSKIP, INT_MIN, INT_MAX, V|E, "flags2"},
731{"aud", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_AUD, INT_MIN, INT_MAX, V|E, "flags2"},
732{"brdo", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_BRDO, INT_MIN, INT_MAX, V|E, "flags2"},
8c3dd5dc 733{"complexityblur", NULL, OFFSET(complexityblur), FF_OPT_TYPE_FLOAT, 20.0, FLT_MIN, FLT_MAX, V|E},
58f7833e
RS
734{"deblockalpha", NULL, OFFSET(deblockalpha), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
735{"deblockbeta", NULL, OFFSET(deblockbeta), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
736{"partitions", NULL, OFFSET(partitions), FF_OPT_TYPE_FLAGS, DEFAULT, INT_MIN, INT_MAX, V|E, "partitions"},
737{"parti4x4", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_I4X4, INT_MIN, INT_MAX, V|E, "partitions"},
738{"parti8x8", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_I8X8, INT_MIN, INT_MAX, V|E, "partitions"},
739{"partp4x4", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_P4X4, INT_MIN, INT_MAX, V|E, "partitions"},
740{"partp8x8", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_P8X8, INT_MIN, INT_MAX, V|E, "partitions"},
741{"partb8x8", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_B8X8, INT_MIN, INT_MAX, V|E, "partitions"},
39a64e30 742{"sc_factor", NULL, OFFSET(scenechange_factor), FF_OPT_TYPE_INT, 6, 0, INT_MAX, V|E},
1dd509b1 743{"mv0_threshold", NULL, OFFSET(mv0_threshold), FF_OPT_TYPE_INT, 256, 0, INT_MAX, V|E},
307eb248 744{"ivlc", "intra vlc table", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_INTRA_VLC, INT_MIN, INT_MAX, V|E, "flags2"},
f9243d34 745{"b_sensitivity", NULL, OFFSET(b_sensitivity), FF_OPT_TYPE_INT, 40, 1, INT_MAX, V|E},
a403fc03
JR
746{"compression_level", NULL, OFFSET(compression_level), FF_OPT_TYPE_INT, FF_COMPRESSION_DEFAULT, INT_MIN, INT_MAX, V|A|E},
747{"use_lpc", NULL, OFFSET(use_lpc), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
748{"lpc_coeff_precision", NULL, OFFSET(lpc_coeff_precision), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, A|E},
749{"min_prediction_order", NULL, OFFSET(min_prediction_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
750{"max_prediction_order", NULL, OFFSET(max_prediction_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
751{"prediction_order_method", NULL, OFFSET(prediction_order_method), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
752{"min_partition_order", NULL, OFFSET(min_partition_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
753{"max_partition_order", NULL, OFFSET(max_partition_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
860a40c8
MN
754{NULL},
755};
756
8bbf6db9
MN
757#undef A
758#undef V
5e89b50b
PI
759#undef S
760#undef E
761#undef D
762#undef DEFAULT
8bbf6db9 763
860a40c8 764static AVClass av_codec_context_class = { "AVCodecContext", context_to_name, options };
43465395 765
a949d72e 766void avcodec_get_context_defaults(AVCodecContext *s){
9740beff
MN
767 memset(s, 0, sizeof(AVCodecContext));
768
43465395 769 s->av_class= &av_codec_context_class;
73a8ceaa
PI
770
771 av_opt_set_defaults(s);
772
a949d72e 773 s->rc_eq= "tex^qComp";
c0df9d75 774 s->time_base= (AVRational){0,1};
1e491e29
MN
775 s->get_buffer= avcodec_default_get_buffer;
776 s->release_buffer= avcodec_default_release_buffer;
a33c7159 777 s->get_format= avcodec_default_get_format;
9c3d33d6 778 s->execute= avcodec_default_execute;
158c7f05
MN
779 s->lmin= FF_QP2LAMBDA * s->qmin;
780 s->lmax= FF_QP2LAMBDA * s->qmax;
5ff85f1d 781 s->sample_aspect_ratio= (AVRational){0,1};
644a9262 782 s->pix_fmt= PIX_FMT_NONE;
1319a77b 783 s->sample_fmt= SAMPLE_FMT_S16; // FIXME: set to NONE
8c3dd5dc 784
2a2bbcb0 785 s->palctrl = NULL;
e1c2a5a0 786 s->reget_buffer= avcodec_default_reget_buffer;
a949d72e
MN
787}
788
789/**
790 * allocates a AVCodecContext and set it to defaults.
115329f1 791 * this can be deallocated by simply calling free()
a949d72e 792 */
7ffbb60e 793AVCodecContext *avcodec_alloc_context(void){
9740beff 794 AVCodecContext *avctx= av_malloc(sizeof(AVCodecContext));
115329f1 795
a949d72e 796 if(avctx==NULL) return NULL;
115329f1 797
a949d72e 798 avcodec_get_context_defaults(avctx);
115329f1 799
a949d72e
MN
800 return avctx;
801}
802
9740beff
MN
803void avcodec_get_frame_defaults(AVFrame *pic){
804 memset(pic, 0, sizeof(AVFrame));
805
806 pic->pts= AV_NOPTS_VALUE;
c342499d 807 pic->key_frame= 1;
9740beff
MN
808}
809
1e491e29 810/**
492cd3a9 811 * allocates a AVPFrame and set it to defaults.
115329f1 812 * this can be deallocated by simply calling free()
1e491e29 813 */
492cd3a9 814AVFrame *avcodec_alloc_frame(void){
9740beff 815 AVFrame *pic= av_malloc(sizeof(AVFrame));
115329f1 816
9740beff 817 if(pic==NULL) return NULL;
115329f1 818
9740beff 819 avcodec_get_frame_defaults(pic);
115329f1 820
1e491e29
MN
821 return pic;
822}
823
de6d9b64
FB
824int avcodec_open(AVCodecContext *avctx, AVCodec *codec)
825{
ddebfb15 826 int ret= -1;
115329f1 827
ddebfb15
MN
828 entangled_thread_counter++;
829 if(entangled_thread_counter != 1){
830 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
831 goto end;
832 }
de6d9b64 833
09770af8 834 if(avctx->codec)
ddebfb15 835 goto end;
09770af8 836
0edf8a7a
PG
837 if (codec->priv_data_size > 0) {
838 avctx->priv_data = av_mallocz(codec->priv_data_size);
115329f1 839 if (!avctx->priv_data)
ddebfb15 840 goto end;
0edf8a7a
PG
841 } else {
842 avctx->priv_data = NULL;
843 }
21adafec
MN
844
845 if(avctx->coded_width && avctx->coded_height)
846 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
847 else if(avctx->width && avctx->height)
848 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
849
0ecca7a4
MN
850 if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height)){
851 av_freep(&avctx->priv_data);
ddebfb15 852 goto end;
0ecca7a4
MN
853 }
854
b5c85991
MN
855 avctx->codec = codec;
856 avctx->codec_id = codec->id;
857 avctx->frame_number = 0;
de6d9b64
FB
858 ret = avctx->codec->init(avctx);
859 if (ret < 0) {
3123dd79 860 av_freep(&avctx->priv_data);
b5c85991 861 avctx->codec= NULL;
ddebfb15 862 goto end;
de6d9b64 863 }
ddebfb15
MN
864 ret=0;
865end:
866 entangled_thread_counter--;
867 return ret;
de6d9b64
FB
868}
869
115329f1 870int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
de6d9b64
FB
871 const short *samples)
872{
0ecca7a4
MN
873 if(buf_size < FF_MIN_BUFFER_SIZE && 0){
874 av_log(avctx, AV_LOG_ERROR, "buffer smaller then minimum size\n");
875 return -1;
876 }
6f824977
MN
877 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
878 int ret = avctx->codec->encode(avctx, buf, buf_size, (void *)samples);
879 avctx->frame_number++;
880 return ret;
881 }else
882 return 0;
de6d9b64
FB
883}
884
115329f1 885int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
492cd3a9 886 const AVFrame *pict)
de6d9b64 887{
0ecca7a4
MN
888 if(buf_size < FF_MIN_BUFFER_SIZE){
889 av_log(avctx, AV_LOG_ERROR, "buffer smaller then minimum size\n");
890 return -1;
891 }
892 if(avcodec_check_dimensions(avctx,avctx->width,avctx->height))
893 return -1;
6f824977
MN
894 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
895 int ret = avctx->codec->encode(avctx, buf, buf_size, (void *)pict);
896 avctx->frame_number++;
bb628dae 897 emms_c(); //needed to avoid an emms_c() call before every return;
115329f1 898
6f824977
MN
899 return ret;
900 }else
901 return 0;
de6d9b64
FB
902}
903
115329f1 904int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
240c1657
FB
905 const AVSubtitle *sub)
906{
907 int ret;
908 ret = avctx->codec->encode(avctx, buf, buf_size, (void *)sub);
909 avctx->frame_number++;
910 return ret;
911}
912
115329f1
DB
913/**
914 * decode a frame.
f138f883
MN
915 * @param buf bitstream buffer, must be FF_INPUT_BUFFER_PADDING_SIZE larger then the actual read bytes
916 * because some optimized bitstream readers read 32 or 64 bit at once and could read over the end
917 * @param buf_size the size of the buffer in bytes
918 * @param got_picture_ptr zero if no frame could be decompressed, Otherwise, it is non zero
919 * @return -1 if error, otherwise return the number of
115329f1 920 * bytes used.
f138f883 921 */
115329f1 922int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
de6d9b64 923 int *got_picture_ptr,
0c1a9eda 924 uint8_t *buf, int buf_size)
de6d9b64
FB
925{
926 int ret;
115329f1 927
53db1cae 928 *got_picture_ptr= 0;
0ecca7a4
MN
929 if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height))
930 return -1;
934982c4 931 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || buf_size){
115329f1 932 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
934982c4 933 buf, buf_size);
6bb925f4 934
bb628dae 935 emms_c(); //needed to avoid an emms_c() call before every return;
115329f1
DB
936
937 if (*got_picture_ptr)
934982c4
MN
938 avctx->frame_number++;
939 }else
940 ret= 0;
941
de6d9b64
FB
942 return ret;
943}
944
945/* decode an audio frame. return -1 if error, otherwise return the
946 *number of bytes used. If no frame could be decompressed,
947 *frame_size_ptr is zero. Otherwise, it is the decompressed frame
948 *size in BYTES. */
115329f1 949int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
de6d9b64 950 int *frame_size_ptr,
0c1a9eda 951 uint8_t *buf, int buf_size)
de6d9b64
FB
952{
953 int ret;
954
53db1cae 955 *frame_size_ptr= 0;
fec9ccb7 956 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || buf_size){
115329f1 957 ret = avctx->codec->decode(avctx, samples, frame_size_ptr,
fec9ccb7
MN
958 buf, buf_size);
959 avctx->frame_number++;
960 }else
961 ret= 0;
de6d9b64
FB
962 return ret;
963}
964
240c1657
FB
965/* decode a subtitle message. return -1 if error, otherwise return the
966 *number of bytes used. If no subtitle could be decompressed,
967 *got_sub_ptr is zero. Otherwise, the subtitle is stored in *sub. */
968int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
969 int *got_sub_ptr,
970 const uint8_t *buf, int buf_size)
971{
972 int ret;
973
974 *got_sub_ptr = 0;
115329f1 975 ret = avctx->codec->decode(avctx, sub, got_sub_ptr,
240c1657
FB
976 (uint8_t *)buf, buf_size);
977 if (*got_sub_ptr)
978 avctx->frame_number++;
979 return ret;
980}
981
de6d9b64
FB
982int avcodec_close(AVCodecContext *avctx)
983{
ddebfb15
MN
984 entangled_thread_counter++;
985 if(entangled_thread_counter != 1){
986 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
987 entangled_thread_counter--;
988 return -1;
989 }
990
de6d9b64
FB
991 if (avctx->codec->close)
992 avctx->codec->close(avctx);
eea8c08f 993 avcodec_default_free_buffers(avctx);
3123dd79 994 av_freep(&avctx->priv_data);
de6d9b64 995 avctx->codec = NULL;
ddebfb15 996 entangled_thread_counter--;
de6d9b64
FB
997 return 0;
998}
999
1000AVCodec *avcodec_find_encoder(enum CodecID id)
1001{
1002 AVCodec *p;
1003 p = first_avcodec;
1004 while (p) {
1005 if (p->encode != NULL && p->id == id)
1006 return p;
1007 p = p->next;
1008 }
1009 return NULL;
1010}
1011
98f3b098
A
1012AVCodec *avcodec_find_encoder_by_name(const char *name)
1013{
1014 AVCodec *p;
1015 p = first_avcodec;
1016 while (p) {
1017 if (p->encode != NULL && strcmp(name,p->name) == 0)
1018 return p;
1019 p = p->next;
1020 }
1021 return NULL;
1022}
1023
de6d9b64
FB
1024AVCodec *avcodec_find_decoder(enum CodecID id)
1025{
1026 AVCodec *p;
1027 p = first_avcodec;
1028 while (p) {
1029 if (p->decode != NULL && p->id == id)
1030 return p;
1031 p = p->next;
1032 }
1033 return NULL;
1034}
1035
1036AVCodec *avcodec_find_decoder_by_name(const char *name)
1037{
1038 AVCodec *p;
1039 p = first_avcodec;
1040 while (p) {
1041 if (p->decode != NULL && strcmp(name,p->name) == 0)
1042 return p;
1043 p = p->next;
1044 }
1045 return NULL;
1046}
1047
de6d9b64
FB
1048void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
1049{
1050 const char *codec_name;
1051 AVCodec *p;
1052 char buf1[32];
623563c0 1053 char channels_str[100];
a96b68b7 1054 int bitrate;
de6d9b64
FB
1055
1056 if (encode)
1057 p = avcodec_find_encoder(enc->codec_id);
1058 else
1059 p = avcodec_find_decoder(enc->codec_id);
1060
1061 if (p) {
1062 codec_name = p->name;
98ce5991
FB
1063 if (!encode && enc->codec_id == CODEC_ID_MP3) {
1064 if (enc->sub_id == 2)
1065 codec_name = "mp2";
1066 else if (enc->sub_id == 1)
1067 codec_name = "mp1";
1068 }
985180a1
FB
1069 } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
1070 /* fake mpeg2 transport stream codec (currently not
1071 registered) */
1072 codec_name = "mpeg2ts";
de6d9b64
FB
1073 } else if (enc->codec_name[0] != '\0') {
1074 codec_name = enc->codec_name;
1075 } else {
1076 /* output avi tags */
115329f1 1077 if( isprint(enc->codec_tag&0xFF) && isprint((enc->codec_tag>>8)&0xFF)
b983a5c6 1078 && isprint((enc->codec_tag>>16)&0xFF) && isprint((enc->codec_tag>>24)&0xFF)){
115329f1 1079 snprintf(buf1, sizeof(buf1), "%c%c%c%c / 0x%04X",
de6d9b64
FB
1080 enc->codec_tag & 0xff,
1081 (enc->codec_tag >> 8) & 0xff,
1082 (enc->codec_tag >> 16) & 0xff,
b983a5c6
MN
1083 (enc->codec_tag >> 24) & 0xff,
1084 enc->codec_tag);
de6d9b64
FB
1085 } else {
1086 snprintf(buf1, sizeof(buf1), "0x%04x", enc->codec_tag);
1087 }
1088 codec_name = buf1;
1089 }
1090
1091 switch(enc->codec_type) {
1092 case CODEC_TYPE_VIDEO:
1093 snprintf(buf, buf_size,
1094 "Video: %s%s",
7d1c3fc1 1095 codec_name, enc->mb_decision ? " (hq)" : "");
82c0c4ba 1096 if (enc->pix_fmt != PIX_FMT_NONE) {
cf087595
FB
1097 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1098 ", %s",
9bbffbb1 1099 avcodec_get_pix_fmt_name(enc->pix_fmt));
cf087595 1100 }
de6d9b64
FB
1101 if (enc->width) {
1102 snprintf(buf + strlen(buf), buf_size - strlen(buf),
21189011
MN
1103 ", %dx%d",
1104 enc->width, enc->height);
1105 if(av_log_get_level() >= AV_LOG_DEBUG){
1106 int g= ff_gcd(enc->time_base.num, enc->time_base.den);
1107 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1108 ", %d/%d",
1109 enc->time_base.num/g, enc->time_base.den/g);
1110 }
de6d9b64 1111 }
4bfad535
FB
1112 if (encode) {
1113 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1114 ", q=%d-%d", enc->qmin, enc->qmax);
1115 }
a96b68b7 1116 bitrate = enc->bit_rate;
de6d9b64
FB
1117 break;
1118 case CODEC_TYPE_AUDIO:
1119 snprintf(buf, buf_size,
1120 "Audio: %s",
1121 codec_name);
e0d2714a
J
1122 switch (enc->channels) {
1123 case 1:
623563c0 1124 strcpy(channels_str, "mono");
e0d2714a
J
1125 break;
1126 case 2:
623563c0 1127 strcpy(channels_str, "stereo");
e0d2714a
J
1128 break;
1129 case 6:
623563c0 1130 strcpy(channels_str, "5:1");
e0d2714a
J
1131 break;
1132 default:
2fc8ea24 1133 snprintf(channels_str, sizeof(channels_str), "%d channels", enc->channels);
e0d2714a
J
1134 break;
1135 }
de6d9b64
FB
1136 if (enc->sample_rate) {
1137 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1138 ", %d Hz, %s",
1139 enc->sample_rate,
e0d2714a 1140 channels_str);
de6d9b64 1141 }
115329f1 1142
a96b68b7
FB
1143 /* for PCM codecs, compute bitrate directly */
1144 switch(enc->codec_id) {
b461b3bc
RD
1145 case CODEC_ID_PCM_S32LE:
1146 case CODEC_ID_PCM_S32BE:
1147 case CODEC_ID_PCM_U32LE:
1148 case CODEC_ID_PCM_U32BE:
1149 bitrate = enc->sample_rate * enc->channels * 32;
1150 break;
1151 case CODEC_ID_PCM_S24LE:
1152 case CODEC_ID_PCM_S24BE:
1153 case CODEC_ID_PCM_U24LE:
1154 case CODEC_ID_PCM_U24BE:
1155 case CODEC_ID_PCM_S24DAUD:
1156 bitrate = enc->sample_rate * enc->channels * 24;
1157 break;
a96b68b7
FB
1158 case CODEC_ID_PCM_S16LE:
1159 case CODEC_ID_PCM_S16BE:
1160 case CODEC_ID_PCM_U16LE:
1161 case CODEC_ID_PCM_U16BE:
a190b7e9 1162 bitrate = enc->sample_rate * enc->channels * 16;
a96b68b7
FB
1163 break;
1164 case CODEC_ID_PCM_S8:
1165 case CODEC_ID_PCM_U8:
1166 case CODEC_ID_PCM_ALAW:
1167 case CODEC_ID_PCM_MULAW:
a190b7e9 1168 bitrate = enc->sample_rate * enc->channels * 8;
a96b68b7
FB
1169 break;
1170 default:
1171 bitrate = enc->bit_rate;
1172 break;
1173 }
de6d9b64 1174 break;
985180a1
FB
1175 case CODEC_TYPE_DATA:
1176 snprintf(buf, buf_size, "Data: %s", codec_name);
240c1657
FB
1177 bitrate = enc->bit_rate;
1178 break;
1179 case CODEC_TYPE_SUBTITLE:
1180 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
985180a1
FB
1181 bitrate = enc->bit_rate;
1182 break;
de6d9b64 1183 default:
9fe5a7b8
MN
1184 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
1185 return;
de6d9b64 1186 }
4bfad535
FB
1187 if (encode) {
1188 if (enc->flags & CODEC_FLAG_PASS1)
1189 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1190 ", pass 1");
1191 if (enc->flags & CODEC_FLAG_PASS2)
1192 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1193 ", pass 2");
1194 }
a96b68b7 1195 if (bitrate != 0) {
115329f1 1196 snprintf(buf + strlen(buf), buf_size - strlen(buf),
a96b68b7 1197 ", %d kb/s", bitrate / 1000);
de6d9b64
FB
1198 }
1199}
1200
156e5023
NK
1201unsigned avcodec_version( void )
1202{
1203 return LIBAVCODEC_VERSION_INT;
1204}
cf087595 1205
8bceb6af
NK
1206unsigned avcodec_build( void )
1207{
1208 return LIBAVCODEC_BUILD;
1209}
1210
43a80cce
MN
1211static void init_crcs(void){
1212 av_crc04C11DB7= av_mallocz_static(sizeof(AVCRC) * 257);
e027d0a8 1213 av_crc8005 = av_mallocz_static(sizeof(AVCRC) * 257);
b865838e 1214 av_crc07 = av_mallocz_static(sizeof(AVCRC) * 257);
43a80cce 1215 av_crc_init(av_crc04C11DB7, 0, 32, 0x04c11db7, sizeof(AVCRC)*257);
e027d0a8 1216 av_crc_init(av_crc8005 , 0, 16, 0x8005 , sizeof(AVCRC)*257);
b865838e 1217 av_crc_init(av_crc07 , 0, 8, 0x07 , sizeof(AVCRC)*257);
43a80cce
MN
1218}
1219
de6d9b64
FB
1220/* must be called before any other functions */
1221void avcodec_init(void)
1222{
0344cd0a
AB
1223 static int inited = 0;
1224
1225 if (inited != 0)
bb270c08 1226 return;
0344cd0a
AB
1227 inited = 1;
1228
59cf08ce 1229 dsputil_static_init();
43a80cce 1230 init_crcs();
de6d9b64
FB
1231}
1232
7a06ff14
MN
1233/**
1234 * Flush buffers, should be called when seeking or when swicthing to a different stream.
1235 */
1c2a8c7f
MN
1236void avcodec_flush_buffers(AVCodecContext *avctx)
1237{
7a06ff14
MN
1238 if(avctx->codec->flush)
1239 avctx->codec->flush(avctx);
1c2a8c7f
MN
1240}
1241
b100eab8 1242void avcodec_default_free_buffers(AVCodecContext *s){
d90cf87b
MN
1243 int i, j;
1244
1245 if(s->internal_buffer==NULL) return;
115329f1 1246
d90cf87b
MN
1247 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
1248 InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
1249 for(j=0; j<4; j++){
1250 av_freep(&buf->base[j]);
1251 buf->data[j]= NULL;
1252 }
1253 }
1254 av_freep(&s->internal_buffer);
115329f1 1255
d90cf87b
MN
1256 s->internal_buffer_count=0;
1257}
1258
d8085ea7
MN
1259char av_get_pict_type_char(int pict_type){
1260 switch(pict_type){
115329f1
DB
1261 case I_TYPE: return 'I';
1262 case P_TYPE: return 'P';
1263 case B_TYPE: return 'B';
1264 case S_TYPE: return 'S';
1265 case SI_TYPE:return 'i';
1266 case SP_TYPE:return 'p';
d8085ea7
MN
1267 default: return '?';
1268 }
1269}
1270
ac3e1834
BC
1271int av_get_bits_per_sample(enum CodecID codec_id){
1272 switch(codec_id){
5da71469 1273 case CODEC_ID_ADPCM_SBPRO_2:
f1b163e0 1274 return 2;
5da71469 1275 case CODEC_ID_ADPCM_SBPRO_3:
f1b163e0 1276 return 3;
5da71469 1277 case CODEC_ID_ADPCM_SBPRO_4:
f1b163e0
AJ
1278 case CODEC_ID_ADPCM_CT:
1279 return 4;
ac3e1834
BC
1280 case CODEC_ID_PCM_ALAW:
1281 case CODEC_ID_PCM_MULAW:
1282 case CODEC_ID_PCM_S8:
1283 case CODEC_ID_PCM_U8:
1284 return 8;
1285 case CODEC_ID_PCM_S16BE:
1286 case CODEC_ID_PCM_S16LE:
1287 case CODEC_ID_PCM_U16BE:
1288 case CODEC_ID_PCM_U16LE:
1289 return 16;
1290 case CODEC_ID_PCM_S24DAUD:
1291 case CODEC_ID_PCM_S24BE:
1292 case CODEC_ID_PCM_S24LE:
1293 case CODEC_ID_PCM_U24BE:
1294 case CODEC_ID_PCM_U24LE:
1295 return 24;
1296 case CODEC_ID_PCM_S32BE:
1297 case CODEC_ID_PCM_S32LE:
1298 case CODEC_ID_PCM_U32BE:
1299 case CODEC_ID_PCM_U32LE:
1300 return 32;
1301 default:
1302 return 0;
1303 }
1304}
1305
2450cff2 1306#if !defined(HAVE_THREADS)
ca8ad847
MN
1307int avcodec_thread_init(AVCodecContext *s, int thread_count){
1308 return -1;
1309}
1310#endif
ad2b531d
MR
1311
1312unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1313{
1314 unsigned int n = 0;
1315
1316 while(v >= 0xff) {
1317 *s++ = 0xff;
1318 v -= 0xff;
1319 n++;
1320 }
1321 *s = v;
1322 n++;
1323 return n;
1324}
1005f542
CH
1325
1326/* Wrapper to work around the lack of mkstemp() on mingw/cygin.
1327 * Also, tries to create file in /tmp first, if possible.
1328 * *prefix can be a character constant; *filename will be allocated internally.
1329 * Returns file descriptor of opened file (or -1 on error)
1330 * and opened file name in **filename. */
1331int av_tempfile(char *prefix, char **filename) {
1332 int fd=-1;
2f30a81d 1333#ifdef __MINGW32__
1005f542
CH
1334 *filename = tempnam(".", prefix);
1335#else
1336 size_t len = strlen(prefix) + 12; /* room for "/tmp/" and "XXXXXX\0" */
f2508b17 1337 *filename = av_malloc(len);
1005f542
CH
1338#endif
1339 /* -----common section-----*/
1340 if (*filename == NULL) {
1341 av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot allocate file name\n");
1342 return -1;
1343 }
2f30a81d 1344#ifdef __MINGW32__
1005f542
CH
1345 fd = open(*filename, _O_RDWR | _O_BINARY | _O_CREAT, 0444);
1346#else
1347 snprintf(*filename, len, "/tmp/%sXXXXXX", prefix);
1348 fd = mkstemp(*filename);
1349 if (fd < 0) {
1350 snprintf(*filename, len, "./%sXXXXXX", prefix);
1351 fd = mkstemp(*filename);
1352 }
1353#endif
1354 /* -----common section-----*/
1355 if (fd < 0) {
1356 av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot open temporary file %s\n", *filename);
1357 return -1;
1358 }
1359 return fd; /* success */
1360}