ARMv5TE optimized IDCT
[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 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.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
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
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 /**
22 * @file utils.c
23 * utils.
24 */
25
26 #include "avcodec.h"
27 #include "dsputil.h"
28 #include "mpegvideo.h"
29 #include "integer.h"
30 #include "opt.h"
31 #include "crc.h"
32 #include <stdarg.h>
33 #include <limits.h>
34 #include <float.h>
35 #ifdef __MINGW32__
36 #include <fcntl.h>
37 #endif
38
39 const uint8_t ff_reverse[256]={
40 0x00,0x80,0x40,0xC0,0x20,0xA0,0x60,0xE0,0x10,0x90,0x50,0xD0,0x30,0xB0,0x70,0xF0,
41 0x08,0x88,0x48,0xC8,0x28,0xA8,0x68,0xE8,0x18,0x98,0x58,0xD8,0x38,0xB8,0x78,0xF8,
42 0x04,0x84,0x44,0xC4,0x24,0xA4,0x64,0xE4,0x14,0x94,0x54,0xD4,0x34,0xB4,0x74,0xF4,
43 0x0C,0x8C,0x4C,0xCC,0x2C,0xAC,0x6C,0xEC,0x1C,0x9C,0x5C,0xDC,0x3C,0xBC,0x7C,0xFC,
44 0x02,0x82,0x42,0xC2,0x22,0xA2,0x62,0xE2,0x12,0x92,0x52,0xD2,0x32,0xB2,0x72,0xF2,
45 0x0A,0x8A,0x4A,0xCA,0x2A,0xAA,0x6A,0xEA,0x1A,0x9A,0x5A,0xDA,0x3A,0xBA,0x7A,0xFA,
46 0x06,0x86,0x46,0xC6,0x26,0xA6,0x66,0xE6,0x16,0x96,0x56,0xD6,0x36,0xB6,0x76,0xF6,
47 0x0E,0x8E,0x4E,0xCE,0x2E,0xAE,0x6E,0xEE,0x1E,0x9E,0x5E,0xDE,0x3E,0xBE,0x7E,0xFE,
48 0x01,0x81,0x41,0xC1,0x21,0xA1,0x61,0xE1,0x11,0x91,0x51,0xD1,0x31,0xB1,0x71,0xF1,
49 0x09,0x89,0x49,0xC9,0x29,0xA9,0x69,0xE9,0x19,0x99,0x59,0xD9,0x39,0xB9,0x79,0xF9,
50 0x05,0x85,0x45,0xC5,0x25,0xA5,0x65,0xE5,0x15,0x95,0x55,0xD5,0x35,0xB5,0x75,0xF5,
51 0x0D,0x8D,0x4D,0xCD,0x2D,0xAD,0x6D,0xED,0x1D,0x9D,0x5D,0xDD,0x3D,0xBD,0x7D,0xFD,
52 0x03,0x83,0x43,0xC3,0x23,0xA3,0x63,0xE3,0x13,0x93,0x53,0xD3,0x33,0xB3,0x73,0xF3,
53 0x0B,0x8B,0x4B,0xCB,0x2B,0xAB,0x6B,0xEB,0x1B,0x9B,0x5B,0xDB,0x3B,0xBB,0x7B,0xFB,
54 0x07,0x87,0x47,0xC7,0x27,0xA7,0x67,0xE7,0x17,0x97,0x57,0xD7,0x37,0xB7,0x77,0xF7,
55 0x0F,0x8F,0x4F,0xCF,0x2F,0xAF,0x6F,0xEF,0x1F,0x9F,0x5F,0xDF,0x3F,0xBF,0x7F,0xFF,
56 };
57
58 static int volatile entangled_thread_counter=0;
59
60 /**
61 * realloc which does nothing if the block is large enough
62 */
63 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size)
64 {
65 if(min_size < *size)
66 return ptr;
67
68 *size= FFMAX(17*min_size/16 + 32, min_size);
69
70 return av_realloc(ptr, *size);
71 }
72
73 static unsigned int last_static = 0;
74 static unsigned int allocated_static = 0;
75 static void** array_static = NULL;
76
77 /**
78 * allocation of static arrays - do not use for normal allocation.
79 */
80 void *av_mallocz_static(unsigned int size)
81 {
82 void *ptr = av_mallocz(size);
83
84 if(ptr){
85 array_static =av_fast_realloc(array_static, &allocated_static, sizeof(void*)*(last_static+1));
86 if(!array_static)
87 return NULL;
88 array_static[last_static++] = ptr;
89 }
90
91 return ptr;
92 }
93
94 /**
95 * same as above, but does realloc
96 */
97
98 void *av_realloc_static(void *ptr, unsigned int size)
99 {
100 int i;
101 if(!ptr)
102 return av_mallocz_static(size);
103 /* Look for the old ptr */
104 for(i = 0; i < last_static; i++) {
105 if(array_static[i] == ptr) {
106 array_static[i] = av_realloc(array_static[i], size);
107 return array_static[i];
108 }
109 }
110 return NULL;
111
112 }
113
114 /**
115 * free all static arrays and reset pointers to 0.
116 */
117 void av_free_static(void)
118 {
119 while(last_static){
120 av_freep(&array_static[--last_static]);
121 }
122 av_freep(&array_static);
123 }
124
125 /**
126 * Call av_free_static automatically before it's too late
127 */
128
129 static void do_free(void) __attribute__ ((destructor));
130
131 static void do_free(void)
132 {
133 av_free_static();
134 }
135
136
137 /* encoder management */
138 AVCodec *first_avcodec = NULL;
139
140 void register_avcodec(AVCodec *format)
141 {
142 AVCodec **p;
143 p = &first_avcodec;
144 while (*p != NULL) p = &(*p)->next;
145 *p = format;
146 format->next = NULL;
147 }
148
149 void avcodec_set_dimensions(AVCodecContext *s, int width, int height){
150 s->coded_width = width;
151 s->coded_height= height;
152 s->width = -((-width )>>s->lowres);
153 s->height= -((-height)>>s->lowres);
154 }
155
156 typedef struct InternalBuffer{
157 int last_pic_num;
158 uint8_t *base[4];
159 uint8_t *data[4];
160 int linesize[4];
161 }InternalBuffer;
162
163 #define INTERNAL_BUFFER_SIZE 32
164
165 #define ALIGN(x, a) (((x)+(a)-1)&~((a)-1))
166
167 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
168 int w_align= 1;
169 int h_align= 1;
170
171 switch(s->pix_fmt){
172 case PIX_FMT_YUV420P:
173 case PIX_FMT_YUV422:
174 case PIX_FMT_UYVY422:
175 case PIX_FMT_YUV422P:
176 case PIX_FMT_YUV444P:
177 case PIX_FMT_GRAY8:
178 case PIX_FMT_YUVJ420P:
179 case PIX_FMT_YUVJ422P:
180 case PIX_FMT_YUVJ444P:
181 w_align= 16; //FIXME check for non mpeg style codecs and use less alignment
182 h_align= 16;
183 break;
184 case PIX_FMT_YUV411P:
185 case PIX_FMT_UYVY411:
186 w_align=32;
187 h_align=8;
188 break;
189 case PIX_FMT_YUV410P:
190 if(s->codec_id == CODEC_ID_SVQ1){
191 w_align=64;
192 h_align=64;
193 }
194 case PIX_FMT_RGB555:
195 if(s->codec_id == CODEC_ID_RPZA){
196 w_align=4;
197 h_align=4;
198 }
199 case PIX_FMT_PAL8:
200 if(s->codec_id == CODEC_ID_SMC){
201 w_align=4;
202 h_align=4;
203 }
204 break;
205 case PIX_FMT_BGR24:
206 if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
207 w_align=4;
208 h_align=4;
209 }
210 break;
211 default:
212 w_align= 1;
213 h_align= 1;
214 break;
215 }
216
217 *width = ALIGN(*width , w_align);
218 *height= ALIGN(*height, h_align);
219 }
220
221 int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h){
222 if((int)w>0 && (int)h>0 && (w+128)*(uint64_t)(h+128) < INT_MAX/4)
223 return 0;
224
225 av_log(av_log_ctx, AV_LOG_ERROR, "picture size invalid (%ux%u)\n", w, h);
226 return -1;
227 }
228
229 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){
230 int i;
231 int w= s->width;
232 int h= s->height;
233 InternalBuffer *buf;
234 int *picture_number;
235
236 assert(pic->data[0]==NULL);
237 assert(INTERNAL_BUFFER_SIZE > s->internal_buffer_count);
238
239 if(avcodec_check_dimensions(s,w,h))
240 return -1;
241
242 if(s->internal_buffer==NULL){
243 s->internal_buffer= av_mallocz(INTERNAL_BUFFER_SIZE*sizeof(InternalBuffer));
244 }
245 #if 0
246 s->internal_buffer= av_fast_realloc(
247 s->internal_buffer,
248 &s->internal_buffer_size,
249 sizeof(InternalBuffer)*FFMAX(99, s->internal_buffer_count+1)/*FIXME*/
250 );
251 #endif
252
253 buf= &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
254 picture_number= &(((InternalBuffer*)s->internal_buffer)[INTERNAL_BUFFER_SIZE-1]).last_pic_num; //FIXME ugly hack
255 (*picture_number)++;
256
257 if(buf->base[0]){
258 pic->age= *picture_number - buf->last_pic_num;
259 buf->last_pic_num= *picture_number;
260 }else{
261 int h_chroma_shift, v_chroma_shift;
262 int pixel_size, size[3];
263 AVPicture picture;
264
265 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
266
267 avcodec_align_dimensions(s, &w, &h);
268
269 if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
270 w+= EDGE_WIDTH*2;
271 h+= EDGE_WIDTH*2;
272 }
273 avpicture_fill(&picture, NULL, s->pix_fmt, w, h);
274 pixel_size= picture.linesize[0]*8 / w;
275 //av_log(NULL, AV_LOG_ERROR, "%d %d %d %d\n", (int)picture.data[1], w, h, s->pix_fmt);
276 assert(pixel_size>=1);
277 //FIXME next ensures that linesize= 2^x uvlinesize, thats needed because some MC code assumes it
278 if(pixel_size == 3*8)
279 w= ALIGN(w, STRIDE_ALIGN<<h_chroma_shift);
280 else
281 w= ALIGN(pixel_size*w, STRIDE_ALIGN<<(h_chroma_shift+3)) / pixel_size;
282 size[1] = avpicture_fill(&picture, NULL, s->pix_fmt, w, h);
283 size[0] = picture.linesize[0] * h;
284 size[1] -= size[0];
285 if(picture.data[2])
286 size[1]= size[2]= size[1]/2;
287 else
288 size[2]= 0;
289
290 buf->last_pic_num= -256*256*256*64;
291 memset(buf->base, 0, sizeof(buf->base));
292 memset(buf->data, 0, sizeof(buf->data));
293
294 for(i=0; i<3 && size[i]; i++){
295 const int h_shift= i==0 ? 0 : h_chroma_shift;
296 const int v_shift= i==0 ? 0 : v_chroma_shift;
297
298 buf->linesize[i]= picture.linesize[i];
299
300 buf->base[i]= av_malloc(size[i]+16); //FIXME 16
301 if(buf->base[i]==NULL) return -1;
302 memset(buf->base[i], 128, size[i]);
303
304 // no edge if EDEG EMU or not planar YUV, we check for PAL8 redundantly to protect against a exploitable bug regression ...
305 if((s->flags&CODEC_FLAG_EMU_EDGE) || (s->pix_fmt == PIX_FMT_PAL8) || !size[2])
306 buf->data[i] = buf->base[i];
307 else
308 buf->data[i] = buf->base[i] + ALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift), STRIDE_ALIGN);
309 }
310 pic->age= 256*256*256*64;
311 }
312 pic->type= FF_BUFFER_TYPE_INTERNAL;
313
314 for(i=0; i<4; i++){
315 pic->base[i]= buf->base[i];
316 pic->data[i]= buf->data[i];
317 pic->linesize[i]= buf->linesize[i];
318 }
319 s->internal_buffer_count++;
320
321 return 0;
322 }
323
324 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
325 int i;
326 InternalBuffer *buf, *last, temp;
327
328 assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
329 assert(s->internal_buffer_count);
330
331 buf = NULL; /* avoids warning */
332 for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize
333 buf= &((InternalBuffer*)s->internal_buffer)[i];
334 if(buf->data[0] == pic->data[0])
335 break;
336 }
337 assert(i < s->internal_buffer_count);
338 s->internal_buffer_count--;
339 last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
340
341 temp= *buf;
342 *buf= *last;
343 *last= temp;
344
345 for(i=0; i<3; i++){
346 pic->data[i]=NULL;
347 // pic->base[i]=NULL;
348 }
349 //printf("R%X\n", pic->opaque);
350 }
351
352 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
353 AVFrame temp_pic;
354 int i;
355
356 /* If no picture return a new buffer */
357 if(pic->data[0] == NULL) {
358 /* We will copy from buffer, so must be readable */
359 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
360 return s->get_buffer(s, pic);
361 }
362
363 /* If internal buffer type return the same buffer */
364 if(pic->type == FF_BUFFER_TYPE_INTERNAL)
365 return 0;
366
367 /*
368 * Not internal type and reget_buffer not overridden, emulate cr buffer
369 */
370 temp_pic = *pic;
371 for(i = 0; i < 4; i++)
372 pic->data[i] = pic->base[i] = NULL;
373 pic->opaque = NULL;
374 /* Allocate new frame */
375 if (s->get_buffer(s, pic))
376 return -1;
377 /* Copy image data from old buffer to new buffer */
378 img_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
379 s->height);
380 s->release_buffer(s, &temp_pic); // Release old frame
381 return 0;
382 }
383
384 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count){
385 int i;
386
387 for(i=0; i<count; i++){
388 int r= func(c, arg[i]);
389 if(ret) ret[i]= r;
390 }
391 return 0;
392 }
393
394 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt){
395 return fmt[0];
396 }
397
398 static const char* context_to_name(void* ptr) {
399 AVCodecContext *avc= ptr;
400
401 if(avc && avc->codec && avc->codec->name)
402 return avc->codec->name;
403 else
404 return "NULL";
405 }
406
407 #define OFFSET(x) offsetof(AVCodecContext,x)
408 #define DEFAULT 0 //should be NAN but it doesnt work as its not a constant in glibc as required by ANSI/ISO C
409 //these names are too long to be readable
410 #define V AV_OPT_FLAG_VIDEO_PARAM
411 #define A AV_OPT_FLAG_AUDIO_PARAM
412 #define S AV_OPT_FLAG_SUBTITLE_PARAM
413 #define E AV_OPT_FLAG_ENCODING_PARAM
414 #define D AV_OPT_FLAG_DECODING_PARAM
415
416 #define AV_CODEC_DEFAULT_BITRATE 200*1000
417
418 static const AVOption options[]={
419 {"b", "set video bitrate (in bits/s)", OFFSET(bit_rate), FF_OPT_TYPE_INT, AV_CODEC_DEFAULT_BITRATE, INT_MIN, INT_MAX, V|A|E},
420 {"bt", "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},
421 {"flags", NULL, OFFSET(flags), FF_OPT_TYPE_FLAGS, DEFAULT, INT_MIN, INT_MAX, V|A|E|D, "flags"},
422 {"mv4", "use four motion vector by macroblock (mpeg4)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_4MV, INT_MIN, INT_MAX, V|E, "flags"},
423 {"obmc", "use overlapped block motion compensation (h263+)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_OBMC, INT_MIN, INT_MAX, V|E, "flags"},
424 {"qpel", "use 1/4 pel motion compensation", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_QPEL, INT_MIN, INT_MAX, V|E, "flags"},
425 {"loop", "use loop filter", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_LOOP_FILTER, INT_MIN, INT_MAX, V|E, "flags"},
426 {"qscale", "use fixed qscale", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_QSCALE, INT_MIN, INT_MAX, 0, "flags"},
427 {"gmc", "use gmc", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_GMC, INT_MIN, INT_MAX, V|E, "flags"},
428 {"mv0", "always try a mb with mv=<0,0>", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_MV0, INT_MIN, INT_MAX, V|E, "flags"},
429 {"part", "use data partitioning", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PART, INT_MIN, INT_MAX, V|E, "flags"},
430 {"input_preserved", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG_INPUT_PRESERVED, INT_MIN, INT_MAX, 0, "flags"},
431 {"pass1", "use internal 2pass ratecontrol in first pass mode", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PASS1, INT_MIN, INT_MAX, 0, "flags"},
432 {"pass2", "use internal 2pass ratecontrol in second pass mode", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PASS2, INT_MIN, INT_MAX, 0, "flags"},
433 {"extern_huff", "use external huffman table (for mjpeg)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_EXTERN_HUFF, INT_MIN, INT_MAX, 0, "flags"},
434 {"gray", "only decode/encode grayscale", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_GRAY, INT_MIN, INT_MAX, V|E|D, "flags"},
435 {"emu_edge", "don't draw edges", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_EMU_EDGE, INT_MIN, INT_MAX, 0, "flags"},
436 {"psnr", "error[?] variables will be set during encoding", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_PSNR, INT_MIN, INT_MAX, V|E, "flags"},
437 {"truncated", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG_TRUNCATED, INT_MIN, INT_MAX, 0, "flags"},
438 {"naq", "normalize adaptive quantization", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_NORMALIZE_AQP, INT_MIN, INT_MAX, V|E, "flags"},
439 {"ildct", "use interlaced dct", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_INTERLACED_DCT, INT_MIN, INT_MAX, V|E, "flags"},
440 {"low_delay", "force low delay", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_LOW_DELAY, INT_MIN, INT_MAX, V|D, "flags"},
441 {"alt", "enable alternate scantable (mpeg2/mpeg4)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_ALT_SCAN, INT_MIN, INT_MAX, V|E, "flags"},
442 {"trell", "use trellis quantization", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_TRELLIS_QUANT, INT_MIN, INT_MAX, V|E, "flags"},
443 {"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"},
444 {"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"},
445 {"aic", "h263 advanced intra coding / mpeg4 ac prediction", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_AC_PRED, INT_MIN, INT_MAX, V|E, "flags"},
446 {"umv", "use unlimited motion vectors", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_H263P_UMV, INT_MIN, INT_MAX, V|E, "flags"},
447 {"cbp", "use rate distortion optimization for cbp", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_CBP_RD, INT_MIN, INT_MAX, V|E, "flags"},
448 {"qprd", "use rate distortion optimization for qp selection", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_QP_RD, INT_MIN, INT_MAX, V|E, "flags"},
449 {"aiv", "h263 alternative inter vlc", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_H263P_AIV, INT_MIN, INT_MAX, V|E, "flags"},
450 {"slice", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG_H263P_SLICE_STRUCT, INT_MIN, INT_MAX, V|E, "flags"},
451 {"ilme", "interlaced motion estimation", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_INTERLACED_ME, INT_MIN, INT_MAX, V|E, "flags"},
452 {"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"},
453 {"cgop", "closed gop", 0, FF_OPT_TYPE_CONST, CODEC_FLAG_CLOSED_GOP, INT_MIN, INT_MAX, V|E, "flags"},
454 {"fast", "allow non spec compliant speedup tricks", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_FAST, INT_MIN, INT_MAX, V|E, "flags2"},
455 {"sgop", "strictly enforce gop size", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_STRICT_GOP, INT_MIN, INT_MAX, V|E, "flags2"},
456 {"noout", "skip bitstream encoding", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_NO_OUTPUT, INT_MIN, INT_MAX, V|E, "flags2"},
457 {"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"},
458 {"sub_id", NULL, OFFSET(sub_id), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
459 {"me_method", "set motion estimation method", OFFSET(me_method), FF_OPT_TYPE_INT, ME_EPZS, INT_MIN, INT_MAX, V|E, "me_method"},
460 {"extradata_size", NULL, OFFSET(extradata_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
461 {"time_base", NULL, OFFSET(time_base), FF_OPT_TYPE_RATIONAL, DEFAULT, INT_MIN, INT_MAX},
462 {"g", "set the group of picture size", OFFSET(gop_size), FF_OPT_TYPE_INT, 12, INT_MIN, INT_MAX, V|E},
463 {"rate_emu", NULL, OFFSET(rate_emu), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
464 {"ar", "set audio sampling rate (in Hz)", OFFSET(sample_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
465 {"ac", "set number of audio channels", OFFSET(channels), FF_OPT_TYPE_INT, 1, INT_MIN, INT_MAX},
466 {"cutoff", "set cutoff bandwidth", OFFSET(cutoff), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, A|E},
467 {"frame_size", NULL, OFFSET(frame_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, A|E},
468 {"frame_number", NULL, OFFSET(frame_number), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
469 {"real_pict_num", NULL, OFFSET(real_pict_num), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
470 {"delay", NULL, OFFSET(delay), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
471 {"qcomp", "video quantiser scale compression (VBR)", OFFSET(qcompress), FF_OPT_TYPE_FLOAT, 0.5, FLT_MIN, FLT_MAX, V|E},
472 {"qblur", "video quantiser scale blur (VBR)", OFFSET(qblur), FF_OPT_TYPE_FLOAT, 0.5, FLT_MIN, FLT_MAX, V|E},
473 {"qmin", "min video quantiser scale (VBR)", OFFSET(qmin), FF_OPT_TYPE_INT, 2, 1, 51, V|E},
474 {"qmax", "max video quantiser scale (VBR)", OFFSET(qmax), FF_OPT_TYPE_INT, 31, 1, 51, V|E},
475 {"qdiff", "max difference between the quantiser scale (VBR)", OFFSET(max_qdiff), FF_OPT_TYPE_INT, 3, INT_MIN, INT_MAX, V|E},
476 {"bf", "use 'frames' B frames", OFFSET(max_b_frames), FF_OPT_TYPE_INT, DEFAULT, 0, FF_MAX_B_FRAMES, V|E},
477 {"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},
478 {"rc_strategy", NULL, OFFSET(rc_strategy), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
479 {"b_strategy", NULL, OFFSET(b_frame_strategy), FF_OPT_TYPE_INT, 0, INT_MIN, INT_MAX, V|E},
480 {"hurry_up", NULL, OFFSET(hurry_up), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
481 {"rtp_mode", NULL, OFFSET(rtp_mode), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
482 {"rtp_payload_size", NULL, OFFSET(rtp_payload_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
483 {"mv_bits", NULL, OFFSET(mv_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
484 {"header_bits", NULL, OFFSET(header_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
485 {"i_tex_bits", NULL, OFFSET(i_tex_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
486 {"p_tex_bits", NULL, OFFSET(p_tex_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
487 {"i_count", NULL, OFFSET(i_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
488 {"p_count", NULL, OFFSET(p_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
489 {"skip_count", NULL, OFFSET(skip_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
490 {"misc_bits", NULL, OFFSET(misc_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
491 {"frame_bits", NULL, OFFSET(frame_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
492 {"codec_tag", NULL, OFFSET(codec_tag), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
493 {"bug", "workaround not auto detected encoder bugs", OFFSET(workaround_bugs), FF_OPT_TYPE_FLAGS, FF_BUG_AUTODETECT, INT_MIN, INT_MAX, V|D, "bug"},
494 {"autodetect", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_AUTODETECT, INT_MIN, INT_MAX, V|D, "bug"},
495 {"old_msmpeg4", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_OLD_MSMPEG4, INT_MIN, INT_MAX, V|D, "bug"},
496 {"xvid_ilace", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_XVID_ILACE, INT_MIN, INT_MAX, V|D, "bug"},
497 {"ump4", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_UMP4, INT_MIN, INT_MAX, V|D, "bug"},
498 {"no_padding", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_NO_PADDING, INT_MIN, INT_MAX, V|D, "bug"},
499 {"amv", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_AMV, INT_MIN, INT_MAX, V|D, "bug"},
500 {"ac_vlc", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_AC_VLC, INT_MIN, INT_MAX, V|D, "bug"},
501 {"qpel_chroma", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_QPEL_CHROMA, INT_MIN, INT_MAX, V|D, "bug"},
502 {"std_qpel", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_STD_QPEL, INT_MIN, INT_MAX, V|D, "bug"},
503 {"qpel_chroma2", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_QPEL_CHROMA2, INT_MIN, INT_MAX, V|D, "bug"},
504 {"direct_blocksize", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_DIRECT_BLOCKSIZE, INT_MIN, INT_MAX, V|D, "bug"},
505 {"edge", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_EDGE, INT_MIN, INT_MAX, V|D, "bug"},
506 {"hpel_chroma", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_HPEL_CHROMA, INT_MIN, INT_MAX, V|D, "bug"},
507 {"dc_clip", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_DC_CLIP, INT_MIN, INT_MAX, V|D, "bug"},
508 {"ms", NULL, 0, FF_OPT_TYPE_CONST, FF_BUG_MS, INT_MIN, INT_MAX, V|D, "bug"},
509 {"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},
510 {"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},
511 {"strict", "how strictly to follow the standards", OFFSET(strict_std_compliance), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "strict"},
512 {"very", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_VERY_STRICT, INT_MIN, INT_MAX, V|E, "strict"},
513 {"strict", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_STRICT, INT_MIN, INT_MAX, V|E, "strict"},
514 {"normal", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_NORMAL, INT_MIN, INT_MAX, V|E, "strict"},
515 {"inofficial", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_INOFFICIAL, INT_MIN, INT_MAX, V|E, "strict"},
516 {"experimental", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_EXPERIMENTAL, INT_MIN, INT_MAX, V|E, "strict"},
517 {"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},
518 {"er", NULL, OFFSET(error_resilience), FF_OPT_TYPE_INT, FF_ER_CAREFUL, INT_MIN, INT_MAX, V|D, "er"},
519 {"careful", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_CAREFUL, INT_MIN, INT_MAX, V|D, "er"},
520 {"compliant", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_COMPLIANT, INT_MIN, INT_MAX, V|D, "er"},
521 {"aggressive", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_AGGRESSIVE, INT_MIN, INT_MAX, V|D, "er"},
522 {"very_aggressive", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_VERY_AGGRESSIVE, INT_MIN, INT_MAX, V|D, "er"},
523 {"has_b_frames", NULL, OFFSET(has_b_frames), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
524 {"block_align", NULL, OFFSET(block_align), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
525 {"parse_only", NULL, OFFSET(parse_only), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
526 {"mpeg_quant", NULL, OFFSET(mpeg_quant), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
527 {"stats_out", NULL, OFFSET(stats_out), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX},
528 {"stats_in", NULL, OFFSET(stats_in), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX},
529 {"qsquish", "how to keep quantiser between qmin and qmax (0 = clip, 1 = use differentiable function)", OFFSET(rc_qsquish), FF_OPT_TYPE_FLOAT, DEFAULT, 0, 99, V|E},
530 {"rc_qmod_amp", NULL, OFFSET(rc_qmod_amp), FF_OPT_TYPE_FLOAT, DEFAULT, -FLT_MAX, FLT_MAX, V|E},
531 {"rc_qmod_freq", NULL, OFFSET(rc_qmod_freq), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
532 {"rc_override_count", NULL, OFFSET(rc_override_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
533 {"rc_eq", "set rate control equation", OFFSET(rc_eq), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX, V|E},
534 {"maxrate", "set max video bitrate tolerance (in bits/s)", OFFSET(rc_max_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
535 {"minrate", "set min video bitrate tolerance (in bits/s)", OFFSET(rc_min_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
536 {"bufsize", "set ratecontrol buffer size (in bits)", OFFSET(rc_buffer_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
537 {"rc_buf_aggressivity", NULL, OFFSET(rc_buffer_aggressivity), FF_OPT_TYPE_FLOAT, 1.0, FLT_MIN, FLT_MAX, V|E},
538 {"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},
539 {"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},
540 {"rc_init_cplx", "initial complexity for 1-pass encoding", OFFSET(rc_initial_cplx), FF_OPT_TYPE_FLOAT, DEFAULT, -FLT_MAX, FLT_MAX, V|E},
541 {"dct", NULL, OFFSET(dct_algo), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, V|E, "dct"},
542 {"auto", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_AUTO, INT_MIN, INT_MAX, V|E, "dct"},
543 {"fastint", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_FASTINT, INT_MIN, INT_MAX, V|E, "dct"},
544 {"int", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_INT, INT_MIN, INT_MAX, V|E, "dct"},
545 {"mmx", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_MMX, INT_MIN, INT_MAX, V|E, "dct"},
546 {"mlib", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_MLIB, INT_MIN, INT_MAX, V|E, "dct"},
547 {"altivec", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_ALTIVEC, INT_MIN, INT_MAX, V|E, "dct"},
548 {"faan", NULL, 0, FF_OPT_TYPE_CONST, FF_DCT_FAAN, INT_MIN, INT_MAX, V|E, "dct"},
549 {"lumi_mask", "lumimasking", OFFSET(lumi_masking), FF_OPT_TYPE_FLOAT, 0, -FLT_MAX, FLT_MAX, V|E},
550 {"tcplx_mask", "temporal complexity masking", OFFSET(temporal_cplx_masking), FF_OPT_TYPE_FLOAT, 0, -FLT_MAX, FLT_MAX, V|E},
551 {"scplx_mask", "spatial complexity masking", OFFSET(spatial_cplx_masking), FF_OPT_TYPE_FLOAT, 0, -FLT_MAX, FLT_MAX, V|E},
552 {"p_mask", "inter masking", OFFSET(p_masking), FF_OPT_TYPE_FLOAT, 0, -FLT_MAX, FLT_MAX, V|E},
553 {"dark_mask", "darkness masking", OFFSET(dark_masking), FF_OPT_TYPE_FLOAT, 0, -FLT_MAX, FLT_MAX, V|E},
554 {"unused", NULL, OFFSET(unused), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
555 {"idct", NULL, OFFSET(idct_algo), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, V|E|D, "idct"},
556 {"auto", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_AUTO, INT_MIN, INT_MAX, V|E|D, "idct"},
557 {"int", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_INT, INT_MIN, INT_MAX, V|E|D, "idct"},
558 {"simple", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLE, INT_MIN, INT_MAX, V|E|D, "idct"},
559 {"simplemmx", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLEMMX, INT_MIN, INT_MAX, V|E|D, "idct"},
560 {"libmpeg2mmx", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_LIBMPEG2MMX, INT_MIN, INT_MAX, V|E|D, "idct"},
561 {"ps2", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_PS2, INT_MIN, INT_MAX, V|E|D, "idct"},
562 {"mlib", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_MLIB, INT_MIN, INT_MAX, V|E|D, "idct"},
563 {"arm", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_ARM, INT_MIN, INT_MAX, V|E|D, "idct"},
564 {"altivec", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_ALTIVEC, INT_MIN, INT_MAX, V|E|D, "idct"},
565 {"sh4", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SH4, INT_MIN, INT_MAX, V|E|D, "idct"},
566 {"simplearm", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLEARM, INT_MIN, INT_MAX, V|E|D, "idct"},
567 {"simplearmv5te", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_SIMPLEARMV5TE, INT_MIN, INT_MAX, V|E|D, "idct"},
568 {"h264", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_H264, INT_MIN, INT_MAX, V|E|D, "idct"},
569 {"vp3", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_VP3, INT_MIN, INT_MAX, V|E|D, "idct"},
570 {"ipp", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_IPP, INT_MIN, INT_MAX, V|E|D, "idct"},
571 {"xvidmmx", NULL, 0, FF_OPT_TYPE_CONST, FF_IDCT_XVIDMMX, INT_MIN, INT_MAX, V|E|D, "idct"},
572 {"slice_count", NULL, OFFSET(slice_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
573 {"ec", NULL, OFFSET(error_concealment), FF_OPT_TYPE_FLAGS, 3, INT_MIN, INT_MAX, V|D, "ec"},
574 {"guess_mvs", NULL, 0, FF_OPT_TYPE_CONST, FF_EC_GUESS_MVS, INT_MIN, INT_MAX, V|D, "ec"},
575 {"deblock", NULL, 0, FF_OPT_TYPE_CONST, FF_EC_DEBLOCK, INT_MIN, INT_MAX, V|D, "ec"},
576 {"bits_per_sample", NULL, OFFSET(bits_per_sample), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
577 {"pred", "prediction method", OFFSET(prediction_method), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "pred"},
578 {"left", NULL, 0, FF_OPT_TYPE_CONST, FF_PRED_LEFT, INT_MIN, INT_MAX, V|E, "pred"},
579 {"plane", NULL, 0, FF_OPT_TYPE_CONST, FF_PRED_PLANE, INT_MIN, INT_MAX, V|E, "pred"},
580 {"median", NULL, 0, FF_OPT_TYPE_CONST, FF_PRED_MEDIAN, INT_MIN, INT_MAX, V|E, "pred"},
581 {"aspect", NULL, OFFSET(sample_aspect_ratio), FF_OPT_TYPE_RATIONAL, DEFAULT, 0, 10, V|E},
582 {"debug", "print specific debug info", OFFSET(debug), FF_OPT_TYPE_FLAGS, DEFAULT, 0, INT_MAX, V|A|S|E|D, "debug"},
583 {"pict", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_PICT_INFO, INT_MIN, INT_MAX, V|D, "debug"},
584 {"rc", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_RC, INT_MIN, INT_MAX, V|E, "debug"},
585 {"bitstream", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_BITSTREAM, INT_MIN, INT_MAX, V|D, "debug"},
586 {"mb_type", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_MB_TYPE, INT_MIN, INT_MAX, V|D, "debug"},
587 {"qp", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_QP, INT_MIN, INT_MAX, V|D, "debug"},
588 {"mv", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_MV, INT_MIN, INT_MAX, V|D, "debug"},
589 {"dct_coeff", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_DCT_COEFF, INT_MIN, INT_MAX, V|D, "debug"},
590 {"skip", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_SKIP, INT_MIN, INT_MAX, V|D, "debug"},
591 {"startcode", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_STARTCODE, INT_MIN, INT_MAX, V|D, "debug"},
592 {"pts", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_PTS, INT_MIN, INT_MAX, V|D, "debug"},
593 {"er", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_ER, INT_MIN, INT_MAX, V|D, "debug"},
594 {"mmco", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_MMCO, INT_MIN, INT_MAX, V|D, "debug"},
595 {"bugs", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_BUGS, INT_MIN, INT_MAX, V|D, "debug"},
596 {"vis_qp", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_QP, INT_MIN, INT_MAX, V|D, "debug"},
597 {"vis_mb_type", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MB_TYPE, INT_MIN, INT_MAX, V|D, "debug"},
598 {"vismv", "visualize motion vectors", OFFSET(debug_mv), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, V|D, "debug_mv"},
599 {"pf", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MV_P_FOR, INT_MIN, INT_MAX, V|D, "debug_mv"},
600 {"bf", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MV_B_FOR, INT_MIN, INT_MAX, V|D, "debug_mv"},
601 {"bb", NULL, 0, FF_OPT_TYPE_CONST, FF_DEBUG_VIS_MV_B_BACK, INT_MIN, INT_MAX, V|D, "debug_mv"},
602 {"mb_qmin", NULL, OFFSET(mb_qmin), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
603 {"mb_qmax", NULL, OFFSET(mb_qmax), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
604 {"cmp", "full pel me compare function", OFFSET(me_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
605 {"subcmp", "sub pel me compare function", OFFSET(me_sub_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
606 {"mbcmp", "macroblock compare function", OFFSET(mb_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
607 {"ildctcmp", "interlaced dct compare function", OFFSET(ildct_cmp), FF_OPT_TYPE_INT, FF_CMP_VSAD, INT_MIN, INT_MAX, V|E, "cmp_func"},
608 {"dia_size", NULL, OFFSET(dia_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
609 {"last_pred", NULL, OFFSET(last_predictor_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
610 {"preme", "pre motion estimation", OFFSET(pre_me), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
611 {"precmp", "pre motion estimation compare function", OFFSET(me_pre_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "cmp_func"},
612 {"sad", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_SAD, INT_MIN, INT_MAX, V|E, "cmp_func"},
613 {"sse", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_SSE, INT_MIN, INT_MAX, V|E, "cmp_func"},
614 {"satd", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_SATD, INT_MIN, INT_MAX, V|E, "cmp_func"},
615 {"dct", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_DCT, INT_MIN, INT_MAX, V|E, "cmp_func"},
616 {"psnr", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_PSNR, INT_MIN, INT_MAX, V|E, "cmp_func"},
617 {"bit", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_BIT, INT_MIN, INT_MAX, V|E, "cmp_func"},
618 {"rd", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_RD, INT_MIN, INT_MAX, V|E, "cmp_func"},
619 {"zero", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_ZERO, INT_MIN, INT_MAX, V|E, "cmp_func"},
620 {"vsad", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_VSAD, INT_MIN, INT_MAX, V|E, "cmp_func"},
621 {"vsse", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_VSSE, INT_MIN, INT_MAX, V|E, "cmp_func"},
622 {"nsse", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_NSSE, INT_MIN, INT_MAX, V|E, "cmp_func"},
623 #ifdef CONFIG_SNOW_ENCODER
624 {"w53", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_W53, INT_MIN, INT_MAX, V|E, "cmp_func"},
625 {"w97", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_W97, INT_MIN, INT_MAX, V|E, "cmp_func"},
626 #endif
627 {"dctmax", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_DCTMAX, INT_MIN, INT_MAX, V|E, "cmp_func"},
628 {"chroma", NULL, 0, FF_OPT_TYPE_CONST, FF_CMP_CHROMA, INT_MIN, INT_MAX, V|E, "cmp_func"},
629 {"pre_dia_size", NULL, OFFSET(pre_dia_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
630 {"subq", "sub pel motion estimation quality", OFFSET(me_subpel_quality), FF_OPT_TYPE_INT, 8, INT_MIN, INT_MAX, V|E},
631 {"dtg_active_format", NULL, OFFSET(dtg_active_format), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
632 {"me_range", "limit motion vectors range (1023 for DivX player)", OFFSET(me_range), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
633 {"ibias", "intra quant bias", OFFSET(intra_quant_bias), FF_OPT_TYPE_INT, FF_DEFAULT_QUANT_BIAS, INT_MIN, INT_MAX, V|E},
634 {"pbias", "inter quant bias", OFFSET(inter_quant_bias), FF_OPT_TYPE_INT, FF_DEFAULT_QUANT_BIAS, INT_MIN, INT_MAX, V|E},
635 {"color_table_id", NULL, OFFSET(color_table_id), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
636 {"internal_buffer_count", NULL, OFFSET(internal_buffer_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
637 {"global_quality", NULL, OFFSET(global_quality), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
638 {"coder", NULL, OFFSET(coder_type), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "coder"},
639 {"vlc", "variable length coder / huffman coder", 0, FF_OPT_TYPE_CONST, FF_CODER_TYPE_VLC, INT_MIN, INT_MAX, V|E, "coder"},
640 {"ac", "arithmetic coder", 0, FF_OPT_TYPE_CONST, FF_CODER_TYPE_AC, INT_MIN, INT_MAX, V|E, "coder"},
641 {"context", "context model", OFFSET(context_model), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
642 {"slice_flags", NULL, OFFSET(slice_flags), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
643 {"xvmc_acceleration", NULL, OFFSET(xvmc_acceleration), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
644 {"mbd", NULL, OFFSET(mb_decision), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E, "mbd"},
645 {"simple", NULL, 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_SIMPLE, INT_MIN, INT_MAX, V|E, "mbd"},
646 {"bits", NULL, 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_BITS, INT_MIN, INT_MAX, V|E, "mbd"},
647 {"rd", NULL, 0, FF_OPT_TYPE_CONST, FF_MB_DECISION_RD, INT_MIN, INT_MAX, V|E, "mbd"},
648 {"stream_codec_tag", NULL, OFFSET(stream_codec_tag), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
649 {"sc_threshold", "scene change threshold", OFFSET(scenechange_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
650 {"lmin", "min lagrange factor (VBR)", OFFSET(lmin), FF_OPT_TYPE_INT, 2*FF_QP2LAMBDA, 0, INT_MAX, V|E},
651 {"lmax", "max lagrange factor (VBR)", OFFSET(lmax), FF_OPT_TYPE_INT, 31*FF_QP2LAMBDA, 0, INT_MAX, V|E},
652 {"nr", "noise reduction", OFFSET(noise_reduction), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
653 {"rc_init_occupancy", NULL, OFFSET(rc_initial_buffer_occupancy), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
654 {"inter_threshold", NULL, OFFSET(inter_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
655 {"flags2", NULL, OFFSET(flags2), FF_OPT_TYPE_FLAGS, CODEC_FLAG2_FASTPSKIP, INT_MIN, INT_MAX, V|A|E|D, "flags2"},
656 {"error", NULL, OFFSET(error_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
657 {"antialias", NULL, OFFSET(antialias_algo), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D, "aa"},
658 {"auto", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_AUTO, INT_MIN, INT_MAX, V|D, "aa"},
659 {"fastint", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_FASTINT, INT_MIN, INT_MAX, V|D, "aa"},
660 {"int", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_INT, INT_MIN, INT_MAX, V|D, "aa"},
661 {"float", NULL, 0, FF_OPT_TYPE_CONST, FF_AA_FLOAT, INT_MIN, INT_MAX, V|D, "aa"},
662 {"qns", "quantizer noise shaping", OFFSET(quantizer_noise_shaping), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
663 {"threads", NULL, OFFSET(thread_count), FF_OPT_TYPE_INT, 1, INT_MIN, INT_MAX, V|E|D},
664 {"me_threshold", "motion estimaton threshold", OFFSET(me_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
665 {"mb_threshold", "macroblock threshold", OFFSET(mb_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
666 {"dc", "intra_dc_precision", OFFSET(intra_dc_precision), FF_OPT_TYPE_INT, 0, INT_MIN, INT_MAX, V|E},
667 {"nssew", "nsse weight", OFFSET(nsse_weight), FF_OPT_TYPE_INT, 8, INT_MIN, INT_MAX, V|E},
668 {"skip_top", NULL, OFFSET(skip_top), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
669 {"skip_bottom", NULL, OFFSET(skip_bottom), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
670 {"profile", NULL, OFFSET(profile), FF_OPT_TYPE_INT, FF_PROFILE_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "profile"},
671 {"unknown", NULL, 0, FF_OPT_TYPE_CONST, FF_PROFILE_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "profile"},
672 {"level", NULL, OFFSET(level), FF_OPT_TYPE_INT, FF_LEVEL_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "level"},
673 {"unknown", NULL, 0, FF_OPT_TYPE_CONST, FF_LEVEL_UNKNOWN, INT_MIN, INT_MAX, V|A|E, "level"},
674 {"lowres", NULL, OFFSET(lowres), FF_OPT_TYPE_INT, 0, 0, INT_MAX, V|D},
675 {"skip_threshold", "frame skip threshold", OFFSET(frame_skip_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
676 {"skip_factor", "frame skip factor", OFFSET(frame_skip_factor), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
677 {"skip_exp", "frame skip exponent", OFFSET(frame_skip_exp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
678 {"skipcmp", "frame skip compare function", OFFSET(frame_skip_cmp), FF_OPT_TYPE_INT, FF_CMP_DCTMAX, INT_MIN, INT_MAX, V|E, "cmp_func"},
679 {"border_mask", NULL, OFFSET(border_masking), FF_OPT_TYPE_FLOAT, DEFAULT, -FLT_MAX, FLT_MAX, V|E},
680 {"mblmin", "min macroblock quantiser scale (VBR)", OFFSET(mb_lmin), FF_OPT_TYPE_INT, FF_QP2LAMBDA * 2, INT_MIN, INT_MAX, V|E},
681 {"mblmax", "max macroblock quantiser scale (VBR)", OFFSET(mb_lmax), FF_OPT_TYPE_INT, FF_QP2LAMBDA * 31, INT_MIN, INT_MAX, V|E},
682 {"mepc", "motion estimation bitrate penalty compensation (1.0 = 256)", OFFSET(me_penalty_compensation), FF_OPT_TYPE_INT, 256, INT_MIN, INT_MAX, V|E},
683 {"bidir_refine", NULL, OFFSET(bidir_refine), FF_OPT_TYPE_INT, DEFAULT, 0, 4, V|E},
684 {"brd_scale", NULL, OFFSET(brd_scale), FF_OPT_TYPE_INT, DEFAULT, 0, 10, V|E},
685 {"crf", NULL, OFFSET(crf), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
686 {"cqp", NULL, OFFSET(cqp), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, V|E},
687 {"keyint_min", NULL, OFFSET(keyint_min), FF_OPT_TYPE_INT, 25, INT_MIN, INT_MAX, V|E},
688 {"refs", NULL, OFFSET(refs), FF_OPT_TYPE_INT, 1, INT_MIN, INT_MAX, V|E},
689 {"chromaoffset", NULL, OFFSET(chromaoffset), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
690 {"bframebias", NULL, OFFSET(bframebias), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
691 {"trellis", NULL, OFFSET(trellis), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|A|E},
692 {"directpred", NULL, OFFSET(directpred), FF_OPT_TYPE_INT, 2, INT_MIN, INT_MAX, V|E},
693 {"bpyramid", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_BPYRAMID, INT_MIN, INT_MAX, V|E, "flags2"},
694 {"wpred", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_WPRED, INT_MIN, INT_MAX, V|E, "flags2"},
695 {"mixed_refs", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_MIXED_REFS, INT_MIN, INT_MAX, V|E, "flags2"},
696 {"8x8dct", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_8X8DCT, INT_MIN, INT_MAX, V|E, "flags2"},
697 {"fastpskip", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_FASTPSKIP, INT_MIN, INT_MAX, V|E, "flags2"},
698 {"aud", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_AUD, INT_MIN, INT_MAX, V|E, "flags2"},
699 {"brdo", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_BRDO, INT_MIN, INT_MAX, V|E, "flags2"},
700 {"complexityblur", NULL, OFFSET(complexityblur), FF_OPT_TYPE_FLOAT, 20.0, FLT_MIN, FLT_MAX, V|E},
701 {"deblockalpha", NULL, OFFSET(deblockalpha), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
702 {"deblockbeta", NULL, OFFSET(deblockbeta), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
703 {"partitions", NULL, OFFSET(partitions), FF_OPT_TYPE_FLAGS, DEFAULT, INT_MIN, INT_MAX, V|E, "partitions"},
704 {"parti4x4", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_I4X4, INT_MIN, INT_MAX, V|E, "partitions"},
705 {"parti8x8", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_I8X8, INT_MIN, INT_MAX, V|E, "partitions"},
706 {"partp4x4", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_P4X4, INT_MIN, INT_MAX, V|E, "partitions"},
707 {"partp8x8", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_P8X8, INT_MIN, INT_MAX, V|E, "partitions"},
708 {"partb8x8", NULL, 0, FF_OPT_TYPE_CONST, X264_PART_B8X8, INT_MIN, INT_MAX, V|E, "partitions"},
709 {"sc_factor", NULL, OFFSET(scenechange_factor), FF_OPT_TYPE_INT, 6, 0, INT_MAX, V|E},
710 {"mv0_threshold", NULL, OFFSET(mv0_threshold), FF_OPT_TYPE_INT, 256, 0, INT_MAX, V|E},
711 {"ivlc", "intra vlc table", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_INTRA_VLC, INT_MIN, INT_MAX, V|E, "flags2"},
712 {"b_sensitivity", NULL, OFFSET(b_sensitivity), FF_OPT_TYPE_INT, 40, 1, INT_MAX, V|E},
713 {"compression_level", NULL, OFFSET(compression_level), FF_OPT_TYPE_INT, FF_COMPRESSION_DEFAULT, INT_MIN, INT_MAX, V|A|E},
714 {"use_lpc", NULL, OFFSET(use_lpc), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
715 {"lpc_coeff_precision", NULL, OFFSET(lpc_coeff_precision), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, A|E},
716 {"min_prediction_order", NULL, OFFSET(min_prediction_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
717 {"max_prediction_order", NULL, OFFSET(max_prediction_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
718 {"prediction_order_method", NULL, OFFSET(prediction_order_method), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
719 {"min_partition_order", NULL, OFFSET(min_partition_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
720 {"max_partition_order", NULL, OFFSET(max_partition_order), FF_OPT_TYPE_INT, -1, INT_MIN, INT_MAX, A|E},
721 {NULL},
722 };
723
724 #undef A
725 #undef V
726 #undef S
727 #undef E
728 #undef D
729 #undef DEFAULT
730
731 static AVClass av_codec_context_class = { "AVCodecContext", context_to_name, options };
732
733 void avcodec_get_context_defaults(AVCodecContext *s){
734 memset(s, 0, sizeof(AVCodecContext));
735
736 s->av_class= &av_codec_context_class;
737
738 av_opt_set_defaults(s);
739
740 s->rc_eq= "tex^qComp";
741 s->time_base= (AVRational){0,1};
742 s->get_buffer= avcodec_default_get_buffer;
743 s->release_buffer= avcodec_default_release_buffer;
744 s->get_format= avcodec_default_get_format;
745 s->execute= avcodec_default_execute;
746 s->lmin= FF_QP2LAMBDA * s->qmin;
747 s->lmax= FF_QP2LAMBDA * s->qmax;
748 s->sample_aspect_ratio= (AVRational){0,1};
749 s->pix_fmt= PIX_FMT_NONE;
750 s->sample_fmt= SAMPLE_FMT_S16; // FIXME: set to NONE
751
752 s->palctrl = NULL;
753 s->reget_buffer= avcodec_default_reget_buffer;
754 }
755
756 /**
757 * allocates a AVCodecContext and set it to defaults.
758 * this can be deallocated by simply calling free()
759 */
760 AVCodecContext *avcodec_alloc_context(void){
761 AVCodecContext *avctx= av_malloc(sizeof(AVCodecContext));
762
763 if(avctx==NULL) return NULL;
764
765 avcodec_get_context_defaults(avctx);
766
767 return avctx;
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 /**
778 * allocates a AVPFrame and set it to defaults.
779 * this can be deallocated by simply calling free()
780 */
781 AVFrame *avcodec_alloc_frame(void){
782 AVFrame *pic= av_malloc(sizeof(AVFrame));
783
784 if(pic==NULL) return NULL;
785
786 avcodec_get_frame_defaults(pic);
787
788 return pic;
789 }
790
791 int avcodec_open(AVCodecContext *avctx, AVCodec *codec)
792 {
793 int ret= -1;
794
795 entangled_thread_counter++;
796 if(entangled_thread_counter != 1){
797 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
798 goto end;
799 }
800
801 if(avctx->codec)
802 goto end;
803
804 if (codec->priv_data_size > 0) {
805 avctx->priv_data = av_mallocz(codec->priv_data_size);
806 if (!avctx->priv_data)
807 goto end;
808 } else {
809 avctx->priv_data = NULL;
810 }
811
812 if(avctx->coded_width && avctx->coded_height)
813 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
814 else if(avctx->width && avctx->height)
815 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
816
817 if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height)){
818 av_freep(&avctx->priv_data);
819 goto end;
820 }
821
822 avctx->codec = codec;
823 avctx->codec_id = codec->id;
824 avctx->frame_number = 0;
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 ret=0;
832 end:
833 entangled_thread_counter--;
834 return ret;
835 }
836
837 int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
838 const short *samples)
839 {
840 if(buf_size < FF_MIN_BUFFER_SIZE && 0){
841 av_log(avctx, AV_LOG_ERROR, "buffer smaller then minimum size\n");
842 return -1;
843 }
844 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
845 int ret = avctx->codec->encode(avctx, buf, buf_size, (void *)samples);
846 avctx->frame_number++;
847 return ret;
848 }else
849 return 0;
850 }
851
852 int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
853 const AVFrame *pict)
854 {
855 if(buf_size < FF_MIN_BUFFER_SIZE){
856 av_log(avctx, AV_LOG_ERROR, "buffer smaller then minimum size\n");
857 return -1;
858 }
859 if(avcodec_check_dimensions(avctx,avctx->width,avctx->height))
860 return -1;
861 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
862 int ret = avctx->codec->encode(avctx, buf, buf_size, (void *)pict);
863 avctx->frame_number++;
864 emms_c(); //needed to avoid an emms_c() call before every return;
865
866 return ret;
867 }else
868 return 0;
869 }
870
871 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
872 const AVSubtitle *sub)
873 {
874 int ret;
875 ret = avctx->codec->encode(avctx, buf, buf_size, (void *)sub);
876 avctx->frame_number++;
877 return ret;
878 }
879
880 /**
881 * decode a frame.
882 * @param buf bitstream buffer, must be FF_INPUT_BUFFER_PADDING_SIZE larger then the actual read bytes
883 * because some optimized bitstream readers read 32 or 64 bit at once and could read over the end
884 * @param buf_size the size of the buffer in bytes
885 * @param got_picture_ptr zero if no frame could be decompressed, Otherwise, it is non zero
886 * @return -1 if error, otherwise return the number of
887 * bytes used.
888 */
889 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
890 int *got_picture_ptr,
891 uint8_t *buf, int buf_size)
892 {
893 int ret;
894
895 *got_picture_ptr= 0;
896 if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height))
897 return -1;
898 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || buf_size){
899 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
900 buf, buf_size);
901
902 emms_c(); //needed to avoid an emms_c() call before every return;
903
904 if (*got_picture_ptr)
905 avctx->frame_number++;
906 }else
907 ret= 0;
908
909 return ret;
910 }
911
912 /* decode an audio frame. return -1 if error, otherwise return the
913 *number of bytes used. If no frame could be decompressed,
914 *frame_size_ptr is zero. Otherwise, it is the decompressed frame
915 *size in BYTES. */
916 int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
917 int *frame_size_ptr,
918 uint8_t *buf, int buf_size)
919 {
920 int ret;
921
922 *frame_size_ptr= 0;
923 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || buf_size){
924 ret = avctx->codec->decode(avctx, samples, frame_size_ptr,
925 buf, buf_size);
926 avctx->frame_number++;
927 }else
928 ret= 0;
929 return ret;
930 }
931
932 /* decode a subtitle message. return -1 if error, otherwise return the
933 *number of bytes used. If no subtitle could be decompressed,
934 *got_sub_ptr is zero. Otherwise, the subtitle is stored in *sub. */
935 int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
936 int *got_sub_ptr,
937 const uint8_t *buf, int buf_size)
938 {
939 int ret;
940
941 *got_sub_ptr = 0;
942 ret = avctx->codec->decode(avctx, sub, got_sub_ptr,
943 (uint8_t *)buf, buf_size);
944 if (*got_sub_ptr)
945 avctx->frame_number++;
946 return ret;
947 }
948
949 int avcodec_close(AVCodecContext *avctx)
950 {
951 entangled_thread_counter++;
952 if(entangled_thread_counter != 1){
953 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
954 entangled_thread_counter--;
955 return -1;
956 }
957
958 if (avctx->codec->close)
959 avctx->codec->close(avctx);
960 avcodec_default_free_buffers(avctx);
961 av_freep(&avctx->priv_data);
962 avctx->codec = NULL;
963 entangled_thread_counter--;
964 return 0;
965 }
966
967 AVCodec *avcodec_find_encoder(enum CodecID id)
968 {
969 AVCodec *p;
970 p = first_avcodec;
971 while (p) {
972 if (p->encode != NULL && p->id == id)
973 return p;
974 p = p->next;
975 }
976 return NULL;
977 }
978
979 AVCodec *avcodec_find_encoder_by_name(const char *name)
980 {
981 AVCodec *p;
982 p = first_avcodec;
983 while (p) {
984 if (p->encode != NULL && strcmp(name,p->name) == 0)
985 return p;
986 p = p->next;
987 }
988 return NULL;
989 }
990
991 AVCodec *avcodec_find_decoder(enum CodecID id)
992 {
993 AVCodec *p;
994 p = first_avcodec;
995 while (p) {
996 if (p->decode != NULL && p->id == id)
997 return p;
998 p = p->next;
999 }
1000 return NULL;
1001 }
1002
1003 AVCodec *avcodec_find_decoder_by_name(const char *name)
1004 {
1005 AVCodec *p;
1006 p = first_avcodec;
1007 while (p) {
1008 if (p->decode != NULL && strcmp(name,p->name) == 0)
1009 return p;
1010 p = p->next;
1011 }
1012 return NULL;
1013 }
1014
1015 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
1016 {
1017 const char *codec_name;
1018 AVCodec *p;
1019 char buf1[32];
1020 char channels_str[100];
1021 int bitrate;
1022
1023 if (encode)
1024 p = avcodec_find_encoder(enc->codec_id);
1025 else
1026 p = avcodec_find_decoder(enc->codec_id);
1027
1028 if (p) {
1029 codec_name = p->name;
1030 if (!encode && enc->codec_id == CODEC_ID_MP3) {
1031 if (enc->sub_id == 2)
1032 codec_name = "mp2";
1033 else if (enc->sub_id == 1)
1034 codec_name = "mp1";
1035 }
1036 } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
1037 /* fake mpeg2 transport stream codec (currently not
1038 registered) */
1039 codec_name = "mpeg2ts";
1040 } else if (enc->codec_name[0] != '\0') {
1041 codec_name = enc->codec_name;
1042 } else {
1043 /* output avi tags */
1044 if( isprint(enc->codec_tag&0xFF) && isprint((enc->codec_tag>>8)&0xFF)
1045 && isprint((enc->codec_tag>>16)&0xFF) && isprint((enc->codec_tag>>24)&0xFF)){
1046 snprintf(buf1, sizeof(buf1), "%c%c%c%c / 0x%04X",
1047 enc->codec_tag & 0xff,
1048 (enc->codec_tag >> 8) & 0xff,
1049 (enc->codec_tag >> 16) & 0xff,
1050 (enc->codec_tag >> 24) & 0xff,
1051 enc->codec_tag);
1052 } else {
1053 snprintf(buf1, sizeof(buf1), "0x%04x", enc->codec_tag);
1054 }
1055 codec_name = buf1;
1056 }
1057
1058 switch(enc->codec_type) {
1059 case CODEC_TYPE_VIDEO:
1060 snprintf(buf, buf_size,
1061 "Video: %s%s",
1062 codec_name, enc->mb_decision ? " (hq)" : "");
1063 if (enc->pix_fmt != PIX_FMT_NONE) {
1064 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1065 ", %s",
1066 avcodec_get_pix_fmt_name(enc->pix_fmt));
1067 }
1068 if (enc->width) {
1069 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1070 ", %dx%d",
1071 enc->width, enc->height);
1072 if(av_log_get_level() >= AV_LOG_DEBUG){
1073 int g= ff_gcd(enc->time_base.num, enc->time_base.den);
1074 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1075 ", %d/%d",
1076 enc->time_base.num/g, enc->time_base.den/g);
1077 }
1078 }
1079 if (encode) {
1080 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1081 ", q=%d-%d", enc->qmin, enc->qmax);
1082 }
1083 bitrate = enc->bit_rate;
1084 break;
1085 case CODEC_TYPE_AUDIO:
1086 snprintf(buf, buf_size,
1087 "Audio: %s",
1088 codec_name);
1089 switch (enc->channels) {
1090 case 1:
1091 strcpy(channels_str, "mono");
1092 break;
1093 case 2:
1094 strcpy(channels_str, "stereo");
1095 break;
1096 case 6:
1097 strcpy(channels_str, "5:1");
1098 break;
1099 default:
1100 snprintf(channels_str, sizeof(channels_str), "%d channels", enc->channels);
1101 break;
1102 }
1103 if (enc->sample_rate) {
1104 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1105 ", %d Hz, %s",
1106 enc->sample_rate,
1107 channels_str);
1108 }
1109
1110 /* for PCM codecs, compute bitrate directly */
1111 switch(enc->codec_id) {
1112 case CODEC_ID_PCM_S32LE:
1113 case CODEC_ID_PCM_S32BE:
1114 case CODEC_ID_PCM_U32LE:
1115 case CODEC_ID_PCM_U32BE:
1116 bitrate = enc->sample_rate * enc->channels * 32;
1117 break;
1118 case CODEC_ID_PCM_S24LE:
1119 case CODEC_ID_PCM_S24BE:
1120 case CODEC_ID_PCM_U24LE:
1121 case CODEC_ID_PCM_U24BE:
1122 case CODEC_ID_PCM_S24DAUD:
1123 bitrate = enc->sample_rate * enc->channels * 24;
1124 break;
1125 case CODEC_ID_PCM_S16LE:
1126 case CODEC_ID_PCM_S16BE:
1127 case CODEC_ID_PCM_U16LE:
1128 case CODEC_ID_PCM_U16BE:
1129 bitrate = enc->sample_rate * enc->channels * 16;
1130 break;
1131 case CODEC_ID_PCM_S8:
1132 case CODEC_ID_PCM_U8:
1133 case CODEC_ID_PCM_ALAW:
1134 case CODEC_ID_PCM_MULAW:
1135 bitrate = enc->sample_rate * enc->channels * 8;
1136 break;
1137 default:
1138 bitrate = enc->bit_rate;
1139 break;
1140 }
1141 break;
1142 case CODEC_TYPE_DATA:
1143 snprintf(buf, buf_size, "Data: %s", codec_name);
1144 bitrate = enc->bit_rate;
1145 break;
1146 case CODEC_TYPE_SUBTITLE:
1147 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
1148 bitrate = enc->bit_rate;
1149 break;
1150 default:
1151 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
1152 return;
1153 }
1154 if (encode) {
1155 if (enc->flags & CODEC_FLAG_PASS1)
1156 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1157 ", pass 1");
1158 if (enc->flags & CODEC_FLAG_PASS2)
1159 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1160 ", pass 2");
1161 }
1162 if (bitrate != 0) {
1163 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1164 ", %d kb/s", bitrate / 1000);
1165 }
1166 }
1167
1168 unsigned avcodec_version( void )
1169 {
1170 return LIBAVCODEC_VERSION_INT;
1171 }
1172
1173 unsigned avcodec_build( void )
1174 {
1175 return LIBAVCODEC_BUILD;
1176 }
1177
1178 static void init_crcs(void){
1179 av_crc04C11DB7= av_mallocz_static(sizeof(AVCRC) * 257);
1180 av_crc8005 = av_mallocz_static(sizeof(AVCRC) * 257);
1181 av_crc07 = av_mallocz_static(sizeof(AVCRC) * 257);
1182 av_crc_init(av_crc04C11DB7, 0, 32, 0x04c11db7, sizeof(AVCRC)*257);
1183 av_crc_init(av_crc8005 , 0, 16, 0x8005 , sizeof(AVCRC)*257);
1184 av_crc_init(av_crc07 , 0, 8, 0x07 , sizeof(AVCRC)*257);
1185 }
1186
1187 /* must be called before any other functions */
1188 void avcodec_init(void)
1189 {
1190 static int inited = 0;
1191
1192 if (inited != 0)
1193 return;
1194 inited = 1;
1195
1196 dsputil_static_init();
1197 init_crcs();
1198 }
1199
1200 /**
1201 * Flush buffers, should be called when seeking or when swicthing to a different stream.
1202 */
1203 void avcodec_flush_buffers(AVCodecContext *avctx)
1204 {
1205 if(avctx->codec->flush)
1206 avctx->codec->flush(avctx);
1207 }
1208
1209 void avcodec_default_free_buffers(AVCodecContext *s){
1210 int i, j;
1211
1212 if(s->internal_buffer==NULL) return;
1213
1214 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
1215 InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
1216 for(j=0; j<4; j++){
1217 av_freep(&buf->base[j]);
1218 buf->data[j]= NULL;
1219 }
1220 }
1221 av_freep(&s->internal_buffer);
1222
1223 s->internal_buffer_count=0;
1224 }
1225
1226 char av_get_pict_type_char(int pict_type){
1227 switch(pict_type){
1228 case I_TYPE: return 'I';
1229 case P_TYPE: return 'P';
1230 case B_TYPE: return 'B';
1231 case S_TYPE: return 'S';
1232 case SI_TYPE:return 'i';
1233 case SP_TYPE:return 'p';
1234 default: return '?';
1235 }
1236 }
1237
1238 int av_get_bits_per_sample(enum CodecID codec_id){
1239 switch(codec_id){
1240 case CODEC_ID_ADPCM_SBPRO_2:
1241 return 2;
1242 case CODEC_ID_ADPCM_SBPRO_3:
1243 return 3;
1244 case CODEC_ID_ADPCM_SBPRO_4:
1245 case CODEC_ID_ADPCM_CT:
1246 return 4;
1247 case CODEC_ID_PCM_ALAW:
1248 case CODEC_ID_PCM_MULAW:
1249 case CODEC_ID_PCM_S8:
1250 case CODEC_ID_PCM_U8:
1251 return 8;
1252 case CODEC_ID_PCM_S16BE:
1253 case CODEC_ID_PCM_S16LE:
1254 case CODEC_ID_PCM_U16BE:
1255 case CODEC_ID_PCM_U16LE:
1256 return 16;
1257 case CODEC_ID_PCM_S24DAUD:
1258 case CODEC_ID_PCM_S24BE:
1259 case CODEC_ID_PCM_S24LE:
1260 case CODEC_ID_PCM_U24BE:
1261 case CODEC_ID_PCM_U24LE:
1262 return 24;
1263 case CODEC_ID_PCM_S32BE:
1264 case CODEC_ID_PCM_S32LE:
1265 case CODEC_ID_PCM_U32BE:
1266 case CODEC_ID_PCM_U32LE:
1267 return 32;
1268 default:
1269 return 0;
1270 }
1271 }
1272
1273 #if !defined(HAVE_THREADS)
1274 int avcodec_thread_init(AVCodecContext *s, int thread_count){
1275 return -1;
1276 }
1277 #endif
1278
1279 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1280 {
1281 unsigned int n = 0;
1282
1283 while(v >= 0xff) {
1284 *s++ = 0xff;
1285 v -= 0xff;
1286 n++;
1287 }
1288 *s = v;
1289 n++;
1290 return n;
1291 }
1292
1293 /* Wrapper to work around the lack of mkstemp() on mingw/cygin.
1294 * Also, tries to create file in /tmp first, if possible.
1295 * *prefix can be a character constant; *filename will be allocated internally.
1296 * Returns file descriptor of opened file (or -1 on error)
1297 * and opened file name in **filename. */
1298 int av_tempfile(char *prefix, char **filename) {
1299 int fd=-1;
1300 #ifdef __MINGW32__
1301 *filename = tempnam(".", prefix);
1302 #else
1303 size_t len = strlen(prefix) + 12; /* room for "/tmp/" and "XXXXXX\0" */
1304 *filename = av_malloc(len);
1305 #endif
1306 /* -----common section-----*/
1307 if (*filename == NULL) {
1308 av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot allocate file name\n");
1309 return -1;
1310 }
1311 #ifdef __MINGW32__
1312 fd = open(*filename, _O_RDWR | _O_BINARY | _O_CREAT, 0444);
1313 #else
1314 snprintf(*filename, len, "/tmp/%sXXXXXX", prefix);
1315 fd = mkstemp(*filename);
1316 if (fd < 0) {
1317 snprintf(*filename, len, "./%sXXXXXX", prefix);
1318 fd = mkstemp(*filename);
1319 }
1320 #endif
1321 /* -----common section-----*/
1322 if (fd < 0) {
1323 av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot open temporary file %s\n", *filename);
1324 return -1;
1325 }
1326 return fd; /* success */
1327 }