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