3 * Copyright (c) 2001 Fabrice Bellard
4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
6 * This file is part of FFmpeg.
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.
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.
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
28 /* needed for mkstemp() */
29 #define _XOPEN_SOURCE 600
31 #include "libavutil/avstring.h"
32 #include "libavutil/integer.h"
33 #include "libavutil/crc.h"
34 #include "libavutil/pixdesc.h"
38 #include "imgconvert.h"
39 #include "audioconvert.h"
40 #include "libxvid_internal.h"
50 static int volatile entangled_thread_counter=0;
51 int (*ff_lockmgr_cb)(void **mutex, enum AVLockOp op);
52 static void *codec_mutex;
54 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size)
59 *size= FFMAX(17*min_size/16 + 32, min_size);
61 ptr= av_realloc(ptr, *size);
62 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
68 void av_fast_malloc(void *ptr, unsigned int *size, unsigned int min_size)
73 *size= FFMAX(17*min_size/16 + 32, min_size);
75 *p = av_malloc(*size);
79 /* encoder management */
80 static AVCodec *first_avcodec = NULL;
82 AVCodec *av_codec_next(AVCodec *c){
84 else return first_avcodec;
87 void avcodec_register(AVCodec *codec)
92 while (*p != NULL) p = &(*p)->next;
97 #if LIBAVCODEC_VERSION_MAJOR < 53
98 void register_avcodec(AVCodec *codec)
100 avcodec_register(codec);
104 unsigned avcodec_get_edge_width(void)
109 void avcodec_set_dimensions(AVCodecContext *s, int width, int height){
110 s->coded_width = width;
111 s->coded_height= height;
112 s->width = -((-width )>>s->lowres);
113 s->height= -((-height)>>s->lowres);
116 typedef struct InternalBuffer{
122 enum PixelFormat pix_fmt;
125 #define INTERNAL_BUFFER_SIZE 32
127 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height, int linesize_align[4]){
132 case PIX_FMT_YUV420P:
133 case PIX_FMT_YUYV422:
134 case PIX_FMT_UYVY422:
135 case PIX_FMT_YUV422P:
136 case PIX_FMT_YUV440P:
137 case PIX_FMT_YUV444P:
139 case PIX_FMT_GRAY16BE:
140 case PIX_FMT_GRAY16LE:
141 case PIX_FMT_YUVJ420P:
142 case PIX_FMT_YUVJ422P:
143 case PIX_FMT_YUVJ440P:
144 case PIX_FMT_YUVJ444P:
145 case PIX_FMT_YUVA420P:
146 w_align= 16; //FIXME check for non mpeg style codecs and use less alignment
148 if(s->codec_id == CODEC_ID_MPEG2VIDEO || s->codec_id == CODEC_ID_MJPEG || s->codec_id == CODEC_ID_AMV || s->codec_id == CODEC_ID_THP)
149 h_align= 32; // interlaced is rounded up to 2 MBs
151 case PIX_FMT_YUV411P:
152 case PIX_FMT_UYYVYY411:
156 case PIX_FMT_YUV410P:
157 if(s->codec_id == CODEC_ID_SVQ1){
162 if(s->codec_id == CODEC_ID_RPZA){
169 if(s->codec_id == CODEC_ID_SMC){
175 if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
186 *width = FFALIGN(*width , w_align);
187 *height= FFALIGN(*height, h_align);
188 if(s->codec_id == CODEC_ID_H264)
189 *height+=2; // some of the optimized chroma MC reads one line too much
194 linesize_align[3] = STRIDE_ALIGN;
195 //STRIDE_ALIGN is 8 for SSE* but this does not work for SVQ1 chroma planes
196 //we could change STRIDE_ALIGN to 16 for x86/sse but it would increase the
197 //picture size unneccessarily in some cases. The solution here is not
198 //pretty and better ideas are welcome!
200 if(s->codec_id == CODEC_ID_SVQ1 || s->codec_id == CODEC_ID_VP5 ||
201 s->codec_id == CODEC_ID_VP6 || s->codec_id == CODEC_ID_VP6F ||
202 s->codec_id == CODEC_ID_VP6A) {
205 linesize_align[2] = 16;
210 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
211 int chroma_shift = av_pix_fmt_descriptors[s->pix_fmt].log2_chroma_w;
212 int linesize_align[4];
214 avcodec_align_dimensions2(s, width, height, linesize_align);
215 align = FFMAX(linesize_align[0], linesize_align[3]);
216 linesize_align[1] <<= chroma_shift;
217 linesize_align[2] <<= chroma_shift;
218 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
219 *width=FFALIGN(*width, align);
222 int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h){
223 if((int)w>0 && (int)h>0 && (w+128)*(uint64_t)(h+128) < INT_MAX/8)
226 av_log(av_log_ctx, AV_LOG_ERROR, "picture size invalid (%ux%u)\n", w, h);
227 return AVERROR(EINVAL);
230 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){
237 if(pic->data[0]!=NULL) {
238 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
241 if(s->internal_buffer_count >= INTERNAL_BUFFER_SIZE) {
242 av_log(s, AV_LOG_ERROR, "internal_buffer_count overflow (missing release_buffer?)\n");
246 if(avcodec_check_dimensions(s,w,h))
249 if(s->internal_buffer==NULL){
250 s->internal_buffer= av_mallocz((INTERNAL_BUFFER_SIZE+1)*sizeof(InternalBuffer));
253 s->internal_buffer= av_fast_realloc(
255 &s->internal_buffer_size,
256 sizeof(InternalBuffer)*FFMAX(99, s->internal_buffer_count+1)/*FIXME*/
260 buf= &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
261 picture_number= &(((InternalBuffer*)s->internal_buffer)[INTERNAL_BUFFER_SIZE]).last_pic_num; //FIXME ugly hack
264 if(buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)){
266 av_freep(&buf->base[i]);
272 pic->age= *picture_number - buf->last_pic_num;
273 buf->last_pic_num= *picture_number;
275 int h_chroma_shift, v_chroma_shift;
282 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
284 avcodec_align_dimensions2(s, &w, &h, stride_align);
286 if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
292 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
293 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
294 ff_fill_linesize(&picture, s->pix_fmt, w);
295 // increase alignment of w for next try (rhs gives the lowest bit set in w)
300 unaligned |= picture.linesize[i] % stride_align[i];
304 tmpsize = ff_fill_pointer(&picture, NULL, s->pix_fmt, h);
308 for (i=0; i<3 && picture.data[i+1]; i++)
309 size[i] = picture.data[i+1] - picture.data[i];
310 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
312 buf->last_pic_num= -256*256*256*64;
313 memset(buf->base, 0, sizeof(buf->base));
314 memset(buf->data, 0, sizeof(buf->data));
316 for(i=0; i<4 && size[i]; i++){
317 const int h_shift= i==0 ? 0 : h_chroma_shift;
318 const int v_shift= i==0 ? 0 : v_chroma_shift;
320 buf->linesize[i]= picture.linesize[i];
322 buf->base[i]= av_malloc(size[i]+16); //FIXME 16
323 if(buf->base[i]==NULL) return -1;
324 memset(buf->base[i], 128, size[i]);
326 // no edge if EDGE EMU or not planar YUV
327 if((s->flags&CODEC_FLAG_EMU_EDGE) || !size[2])
328 buf->data[i] = buf->base[i];
330 buf->data[i] = buf->base[i] + FFALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift), stride_align[i]);
332 if(size[1] && !size[2])
333 ff_set_systematic_pal((uint32_t*)buf->data[1], s->pix_fmt);
334 buf->width = s->width;
335 buf->height = s->height;
336 buf->pix_fmt= s->pix_fmt;
337 pic->age= 256*256*256*64;
339 pic->type= FF_BUFFER_TYPE_INTERNAL;
342 pic->base[i]= buf->base[i];
343 pic->data[i]= buf->data[i];
344 pic->linesize[i]= buf->linesize[i];
346 s->internal_buffer_count++;
348 pic->reordered_opaque= s->reordered_opaque;
350 if(s->debug&FF_DEBUG_BUFFERS)
351 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
356 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
358 InternalBuffer *buf, *last;
360 assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
361 assert(s->internal_buffer_count);
363 buf = NULL; /* avoids warning */
364 for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize
365 buf= &((InternalBuffer*)s->internal_buffer)[i];
366 if(buf->data[0] == pic->data[0])
369 assert(i < s->internal_buffer_count);
370 s->internal_buffer_count--;
371 last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
373 FFSWAP(InternalBuffer, *buf, *last);
377 // pic->base[i]=NULL;
379 //printf("R%X\n", pic->opaque);
381 if(s->debug&FF_DEBUG_BUFFERS)
382 av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
385 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
389 /* If no picture return a new buffer */
390 if(pic->data[0] == NULL) {
391 /* We will copy from buffer, so must be readable */
392 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
393 return s->get_buffer(s, pic);
396 /* If internal buffer type return the same buffer */
397 if(pic->type == FF_BUFFER_TYPE_INTERNAL) {
398 pic->reordered_opaque= s->reordered_opaque;
403 * Not internal type and reget_buffer not overridden, emulate cr buffer
406 for(i = 0; i < 4; i++)
407 pic->data[i] = pic->base[i] = NULL;
409 /* Allocate new frame */
410 if (s->get_buffer(s, pic))
412 /* Copy image data from old buffer to new buffer */
413 av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
415 s->release_buffer(s, &temp_pic); // Release old frame
419 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size){
422 for(i=0; i<count; i++){
423 int r= func(c, (char*)arg + i*size);
429 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr),void *arg, int *ret, int count){
432 for(i=0; i<count; i++){
433 int r= func(c, arg, i, 0);
439 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat *fmt){
440 while (*fmt != PIX_FMT_NONE && ff_is_hwaccel_pix_fmt(*fmt))
445 void avcodec_get_frame_defaults(AVFrame *pic){
446 memset(pic, 0, sizeof(AVFrame));
448 pic->pts= AV_NOPTS_VALUE;
452 AVFrame *avcodec_alloc_frame(void){
453 AVFrame *pic= av_malloc(sizeof(AVFrame));
455 if(pic==NULL) return NULL;
457 avcodec_get_frame_defaults(pic);
462 int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
466 /* If there is a user-supplied mutex locking routine, call it. */
468 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
472 entangled_thread_counter++;
473 if(entangled_thread_counter != 1){
474 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
478 if(avctx->codec || !codec)
481 if (codec->priv_data_size > 0) {
482 avctx->priv_data = av_mallocz(codec->priv_data_size);
483 if (!avctx->priv_data) {
484 ret = AVERROR(ENOMEM);
488 avctx->priv_data = NULL;
491 if(avctx->coded_width && avctx->coded_height)
492 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
493 else if(avctx->width && avctx->height)
494 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
496 #define SANE_NB_CHANNELS 128U
497 if (((avctx->coded_width || avctx->coded_height)
498 && avcodec_check_dimensions(avctx, avctx->coded_width, avctx->coded_height))
499 || avctx->channels > SANE_NB_CHANNELS) {
500 ret = AVERROR(EINVAL);
504 avctx->codec = codec;
505 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
506 avctx->codec_id == CODEC_ID_NONE) {
507 avctx->codec_type = codec->type;
508 avctx->codec_id = codec->id;
510 if(avctx->codec_id != codec->id || avctx->codec_type != codec->type){
511 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
514 avctx->frame_number = 0;
515 if(avctx->codec->init){
516 ret = avctx->codec->init(avctx);
523 entangled_thread_counter--;
525 /* Release any user-supplied mutex. */
527 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
531 av_freep(&avctx->priv_data);
536 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
537 const short *samples)
539 if(buf_size < FF_MIN_BUFFER_SIZE && 0){
540 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
543 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
544 int ret = avctx->codec->encode(avctx, buf, buf_size, samples);
545 avctx->frame_number++;
551 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
554 if(buf_size < FF_MIN_BUFFER_SIZE){
555 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
558 if(avcodec_check_dimensions(avctx,avctx->width,avctx->height))
560 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
561 int ret = avctx->codec->encode(avctx, buf, buf_size, pict);
562 avctx->frame_number++;
563 emms_c(); //needed to avoid an emms_c() call before every return;
570 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
571 const AVSubtitle *sub)
574 if(sub->start_display_time) {
575 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
578 if(sub->num_rects == 0 || !sub->rects)
580 ret = avctx->codec->encode(avctx, buf, buf_size, sub);
581 avctx->frame_number++;
585 #if LIBAVCODEC_VERSION_MAJOR < 53
586 int attribute_align_arg avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
587 int *got_picture_ptr,
588 const uint8_t *buf, int buf_size)
591 av_init_packet(&avpkt);
593 avpkt.size = buf_size;
594 // HACK for CorePNG to decode as normal PNG by default
595 avpkt.flags = AV_PKT_FLAG_KEY;
597 return avcodec_decode_video2(avctx, picture, got_picture_ptr, &avpkt);
601 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
602 int *got_picture_ptr,
608 if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height))
610 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){
611 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
614 emms_c(); //needed to avoid an emms_c() call before every return;
616 if (*got_picture_ptr)
617 avctx->frame_number++;
624 #if LIBAVCODEC_VERSION_MAJOR < 53
625 int attribute_align_arg avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples,
627 const uint8_t *buf, int buf_size)
630 av_init_packet(&avpkt);
632 avpkt.size = buf_size;
634 return avcodec_decode_audio3(avctx, samples, frame_size_ptr, &avpkt);
638 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
644 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){
645 //FIXME remove the check below _after_ ensuring that all audio check that the available space is enough
646 if(*frame_size_ptr < AVCODEC_MAX_AUDIO_FRAME_SIZE){
647 av_log(avctx, AV_LOG_ERROR, "buffer smaller than AVCODEC_MAX_AUDIO_FRAME_SIZE\n");
650 if(*frame_size_ptr < FF_MIN_BUFFER_SIZE ||
651 *frame_size_ptr < avctx->channels * avctx->frame_size * sizeof(int16_t)){
652 av_log(avctx, AV_LOG_ERROR, "buffer %d too small\n", *frame_size_ptr);
656 ret = avctx->codec->decode(avctx, samples, frame_size_ptr, avpkt);
657 avctx->frame_number++;
665 #if LIBAVCODEC_VERSION_MAJOR < 53
666 int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
668 const uint8_t *buf, int buf_size)
671 av_init_packet(&avpkt);
673 avpkt.size = buf_size;
675 return avcodec_decode_subtitle2(avctx, sub, got_sub_ptr, &avpkt);
679 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
686 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
688 avctx->frame_number++;
692 av_cold int avcodec_close(AVCodecContext *avctx)
694 /* If there is a user-supplied mutex locking routine, call it. */
696 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
700 entangled_thread_counter++;
701 if(entangled_thread_counter != 1){
702 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
703 entangled_thread_counter--;
707 if (HAVE_THREADS && avctx->thread_opaque)
708 avcodec_thread_free(avctx);
709 if (avctx->codec && avctx->codec->close)
710 avctx->codec->close(avctx);
711 avcodec_default_free_buffers(avctx);
712 avctx->coded_frame = NULL;
713 av_freep(&avctx->priv_data);
714 if(avctx->codec && avctx->codec->encode)
715 av_freep(&avctx->extradata);
717 entangled_thread_counter--;
719 /* Release any user-supplied mutex. */
721 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
726 AVCodec *avcodec_find_encoder(enum CodecID id)
728 AVCodec *p, *experimental=NULL;
731 if (p->encode != NULL && p->id == id) {
732 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
742 AVCodec *avcodec_find_encoder_by_name(const char *name)
749 if (p->encode != NULL && strcmp(name,p->name) == 0)
756 AVCodec *avcodec_find_decoder(enum CodecID id)
761 if (p->decode != NULL && p->id == id)
768 AVCodec *avcodec_find_decoder_by_name(const char *name)
775 if (p->decode != NULL && strcmp(name,p->name) == 0)
782 static int get_bit_rate(AVCodecContext *ctx)
787 switch(ctx->codec_type) {
788 case AVMEDIA_TYPE_VIDEO:
789 case AVMEDIA_TYPE_DATA:
790 case AVMEDIA_TYPE_SUBTITLE:
791 case AVMEDIA_TYPE_ATTACHMENT:
792 bit_rate = ctx->bit_rate;
794 case AVMEDIA_TYPE_AUDIO:
795 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
796 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
805 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
809 for (i = 0; i < 4; i++) {
810 len = snprintf(buf, buf_size,
811 isprint(codec_tag&0xFF) ? "%c" : "[%d]", codec_tag&0xFF);
813 buf_size = buf_size > len ? buf_size - len : 0;
820 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
822 const char *codec_name;
826 AVRational display_aspect_ratio;
829 p = avcodec_find_encoder(enc->codec_id);
831 p = avcodec_find_decoder(enc->codec_id);
834 codec_name = p->name;
835 } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
836 /* fake mpeg2 transport stream codec (currently not
838 codec_name = "mpeg2ts";
839 } else if (enc->codec_name[0] != '\0') {
840 codec_name = enc->codec_name;
842 /* output avi tags */
844 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
845 snprintf(buf1, sizeof(buf1), "%s / 0x%04X", tag_buf, enc->codec_tag);
849 switch(enc->codec_type) {
850 case AVMEDIA_TYPE_VIDEO:
851 snprintf(buf, buf_size,
853 codec_name, enc->mb_decision ? " (hq)" : "");
854 if (enc->pix_fmt != PIX_FMT_NONE) {
855 snprintf(buf + strlen(buf), buf_size - strlen(buf),
857 avcodec_get_pix_fmt_name(enc->pix_fmt));
860 snprintf(buf + strlen(buf), buf_size - strlen(buf),
862 enc->width, enc->height);
863 if (enc->sample_aspect_ratio.num) {
864 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
865 enc->width*enc->sample_aspect_ratio.num,
866 enc->height*enc->sample_aspect_ratio.den,
868 snprintf(buf + strlen(buf), buf_size - strlen(buf),
869 " [PAR %d:%d DAR %d:%d]",
870 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
871 display_aspect_ratio.num, display_aspect_ratio.den);
873 if(av_log_get_level() >= AV_LOG_DEBUG){
874 int g= av_gcd(enc->time_base.num, enc->time_base.den);
875 snprintf(buf + strlen(buf), buf_size - strlen(buf),
877 enc->time_base.num/g, enc->time_base.den/g);
881 snprintf(buf + strlen(buf), buf_size - strlen(buf),
882 ", q=%d-%d", enc->qmin, enc->qmax);
885 case AVMEDIA_TYPE_AUDIO:
886 snprintf(buf, buf_size,
889 if (enc->sample_rate) {
890 snprintf(buf + strlen(buf), buf_size - strlen(buf),
891 ", %d Hz", enc->sample_rate);
893 av_strlcat(buf, ", ", buf_size);
894 avcodec_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
895 if (enc->sample_fmt != SAMPLE_FMT_NONE) {
896 snprintf(buf + strlen(buf), buf_size - strlen(buf),
897 ", %s", avcodec_get_sample_fmt_name(enc->sample_fmt));
900 case AVMEDIA_TYPE_DATA:
901 snprintf(buf, buf_size, "Data: %s", codec_name);
903 case AVMEDIA_TYPE_SUBTITLE:
904 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
906 case AVMEDIA_TYPE_ATTACHMENT:
907 snprintf(buf, buf_size, "Attachment: %s", codec_name);
910 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
914 if (enc->flags & CODEC_FLAG_PASS1)
915 snprintf(buf + strlen(buf), buf_size - strlen(buf),
917 if (enc->flags & CODEC_FLAG_PASS2)
918 snprintf(buf + strlen(buf), buf_size - strlen(buf),
921 bitrate = get_bit_rate(enc);
923 snprintf(buf + strlen(buf), buf_size - strlen(buf),
924 ", %d kb/s", bitrate / 1000);
928 unsigned avcodec_version( void )
930 return LIBAVCODEC_VERSION_INT;
933 const char *avcodec_configuration(void)
935 return FFMPEG_CONFIGURATION;
938 const char *avcodec_license(void)
940 #define LICENSE_PREFIX "libavcodec license: "
941 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
944 void avcodec_init(void)
946 static int initialized = 0;
948 if (initialized != 0)
952 dsputil_static_init();
955 void avcodec_flush_buffers(AVCodecContext *avctx)
957 if(avctx->codec->flush)
958 avctx->codec->flush(avctx);
961 void avcodec_default_free_buffers(AVCodecContext *s){
964 if(s->internal_buffer==NULL) return;
966 if (s->internal_buffer_count)
967 av_log(s, AV_LOG_WARNING, "Found %i unreleased buffers!\n", s->internal_buffer_count);
968 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
969 InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
971 av_freep(&buf->base[j]);
975 av_freep(&s->internal_buffer);
977 s->internal_buffer_count=0;
980 char av_get_pict_type_char(int pict_type){
982 case FF_I_TYPE: return 'I';
983 case FF_P_TYPE: return 'P';
984 case FF_B_TYPE: return 'B';
985 case FF_S_TYPE: return 'S';
986 case FF_SI_TYPE:return 'i';
987 case FF_SP_TYPE:return 'p';
988 case FF_BI_TYPE:return 'b';
993 int av_get_bits_per_sample(enum CodecID codec_id){
995 case CODEC_ID_ADPCM_SBPRO_2:
997 case CODEC_ID_ADPCM_SBPRO_3:
999 case CODEC_ID_ADPCM_SBPRO_4:
1000 case CODEC_ID_ADPCM_CT:
1001 case CODEC_ID_ADPCM_IMA_WAV:
1002 case CODEC_ID_ADPCM_MS:
1003 case CODEC_ID_ADPCM_YAMAHA:
1005 case CODEC_ID_PCM_ALAW:
1006 case CODEC_ID_PCM_MULAW:
1007 case CODEC_ID_PCM_S8:
1008 case CODEC_ID_PCM_U8:
1009 case CODEC_ID_PCM_ZORK:
1011 case CODEC_ID_PCM_S16BE:
1012 case CODEC_ID_PCM_S16LE:
1013 case CODEC_ID_PCM_S16LE_PLANAR:
1014 case CODEC_ID_PCM_U16BE:
1015 case CODEC_ID_PCM_U16LE:
1017 case CODEC_ID_PCM_S24DAUD:
1018 case CODEC_ID_PCM_S24BE:
1019 case CODEC_ID_PCM_S24LE:
1020 case CODEC_ID_PCM_U24BE:
1021 case CODEC_ID_PCM_U24LE:
1023 case CODEC_ID_PCM_S32BE:
1024 case CODEC_ID_PCM_S32LE:
1025 case CODEC_ID_PCM_U32BE:
1026 case CODEC_ID_PCM_U32LE:
1027 case CODEC_ID_PCM_F32BE:
1028 case CODEC_ID_PCM_F32LE:
1030 case CODEC_ID_PCM_F64BE:
1031 case CODEC_ID_PCM_F64LE:
1038 int av_get_bits_per_sample_format(enum SampleFormat sample_fmt) {
1039 switch (sample_fmt) {
1042 case SAMPLE_FMT_S16:
1044 case SAMPLE_FMT_S32:
1045 case SAMPLE_FMT_FLT:
1047 case SAMPLE_FMT_DBL:
1055 int avcodec_thread_init(AVCodecContext *s, int thread_count){
1056 s->thread_count = thread_count;
1061 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1075 /* Wrapper to work around the lack of mkstemp() on mingw/cygin.
1076 * Also, tries to create file in /tmp first, if possible.
1077 * *prefix can be a character constant; *filename will be allocated internally.
1078 * Returns file descriptor of opened file (or -1 on error)
1079 * and opened file name in **filename. */
1080 int av_tempfile(char *prefix, char **filename) {
1083 *filename = tempnam(".", prefix);
1085 size_t len = strlen(prefix) + 12; /* room for "/tmp/" and "XXXXXX\0" */
1086 *filename = av_malloc(len);
1088 /* -----common section-----*/
1089 if (*filename == NULL) {
1090 av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot allocate file name\n");
1094 fd = open(*filename, O_RDWR | O_BINARY | O_CREAT, 0444);
1096 snprintf(*filename, len, "/tmp/%sXXXXXX", prefix);
1097 fd = mkstemp(*filename);
1099 snprintf(*filename, len, "./%sXXXXXX", prefix);
1100 fd = mkstemp(*filename);
1103 /* -----common section-----*/
1105 av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot open temporary file %s\n", *filename);
1108 return fd; /* success */
1114 } VideoFrameSizeAbbr;
1118 int rate_num, rate_den;
1119 } VideoFrameRateAbbr;
1121 static const VideoFrameSizeAbbr video_frame_size_abbrs[] = {
1122 { "ntsc", 720, 480 },
1123 { "pal", 720, 576 },
1124 { "qntsc", 352, 240 }, /* VCD compliant NTSC */
1125 { "qpal", 352, 288 }, /* VCD compliant PAL */
1126 { "sntsc", 640, 480 }, /* square pixel NTSC */
1127 { "spal", 768, 576 }, /* square pixel PAL */
1128 { "film", 352, 240 },
1129 { "ntsc-film", 352, 240 },
1130 { "sqcif", 128, 96 },
1131 { "qcif", 176, 144 },
1132 { "cif", 352, 288 },
1133 { "4cif", 704, 576 },
1134 { "16cif", 1408,1152 },
1135 { "qqvga", 160, 120 },
1136 { "qvga", 320, 240 },
1137 { "vga", 640, 480 },
1138 { "svga", 800, 600 },
1139 { "xga", 1024, 768 },
1140 { "uxga", 1600,1200 },
1141 { "qxga", 2048,1536 },
1142 { "sxga", 1280,1024 },
1143 { "qsxga", 2560,2048 },
1144 { "hsxga", 5120,4096 },
1145 { "wvga", 852, 480 },
1146 { "wxga", 1366, 768 },
1147 { "wsxga", 1600,1024 },
1148 { "wuxga", 1920,1200 },
1149 { "woxga", 2560,1600 },
1150 { "wqsxga", 3200,2048 },
1151 { "wquxga", 3840,2400 },
1152 { "whsxga", 6400,4096 },
1153 { "whuxga", 7680,4800 },
1154 { "cga", 320, 200 },
1155 { "ega", 640, 350 },
1156 { "hd480", 852, 480 },
1157 { "hd720", 1280, 720 },
1158 { "hd1080", 1920,1080 },
1161 static const VideoFrameRateAbbr video_frame_rate_abbrs[]= {
1162 { "ntsc", 30000, 1001 },
1164 { "qntsc", 30000, 1001 }, /* VCD compliant NTSC */
1165 { "qpal", 25, 1 }, /* VCD compliant PAL */
1166 { "sntsc", 30000, 1001 }, /* square pixel NTSC */
1167 { "spal", 25, 1 }, /* square pixel PAL */
1169 { "ntsc-film", 24000, 1001 },
1172 int av_parse_video_frame_size(int *width_ptr, int *height_ptr, const char *str)
1175 int n = FF_ARRAY_ELEMS(video_frame_size_abbrs);
1177 int frame_width = 0, frame_height = 0;
1180 if (!strcmp(video_frame_size_abbrs[i].abbr, str)) {
1181 frame_width = video_frame_size_abbrs[i].width;
1182 frame_height = video_frame_size_abbrs[i].height;
1188 frame_width = strtol(p, &p, 10);
1191 frame_height = strtol(p, &p, 10);
1193 if (frame_width <= 0 || frame_height <= 0)
1195 *width_ptr = frame_width;
1196 *height_ptr = frame_height;
1200 int av_parse_video_frame_rate(AVRational *frame_rate, const char *arg)
1203 int n = FF_ARRAY_ELEMS(video_frame_rate_abbrs);
1206 /* First, we check our abbreviation table */
1207 for (i = 0; i < n; ++i)
1208 if (!strcmp(video_frame_rate_abbrs[i].abbr, arg)) {
1209 frame_rate->num = video_frame_rate_abbrs[i].rate_num;
1210 frame_rate->den = video_frame_rate_abbrs[i].rate_den;
1214 /* Then, we try to parse it as fraction */
1215 cp = strchr(arg, '/');
1217 cp = strchr(arg, ':');
1220 frame_rate->num = strtol(arg, &cpp, 10);
1221 if (cpp != arg || cpp == cp)
1222 frame_rate->den = strtol(cp+1, &cpp, 10);
1224 frame_rate->num = 0;
1227 /* Finally we give up and parse it as double */
1228 AVRational time_base = av_d2q(strtod(arg, 0), 1001000);
1229 frame_rate->den = time_base.den;
1230 frame_rate->num = time_base.num;
1232 if (!frame_rate->num || !frame_rate->den)
1238 int ff_match_2uint16(const uint16_t (*tab)[2], int size, int a, int b){
1240 for(i=0; i<size && !(tab[i][0]==a && tab[i][1]==b); i++);
1244 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
1246 av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your FFmpeg "
1247 "version to the newest one from SVN. If the problem still "
1248 "occurs, it means that your file has a feature which has not "
1249 "been implemented.", feature);
1251 av_log_ask_for_sample(avc, NULL);
1253 av_log(avc, AV_LOG_WARNING, "\n");
1256 void av_log_ask_for_sample(void *avc, const char *msg)
1259 av_log(avc, AV_LOG_WARNING, "%s ", msg);
1260 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
1261 "of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ "
1262 "and contact the ffmpeg-devel mailing list.\n");
1265 static AVHWAccel *first_hwaccel = NULL;
1267 void av_register_hwaccel(AVHWAccel *hwaccel)
1269 AVHWAccel **p = &first_hwaccel;
1273 hwaccel->next = NULL;
1276 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
1278 return hwaccel ? hwaccel->next : first_hwaccel;
1281 AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt)
1283 AVHWAccel *hwaccel=NULL;
1285 while((hwaccel= av_hwaccel_next(hwaccel))){
1286 if ( hwaccel->id == codec_id
1287 && hwaccel->pix_fmt == pix_fmt)
1293 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
1295 if (ff_lockmgr_cb) {
1296 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
1302 if (ff_lockmgr_cb) {
1303 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
1309 unsigned int ff_toupper4(unsigned int x)
1311 return toupper( x &0xFF)
1312 + (toupper((x>>8 )&0xFF)<<8 )
1313 + (toupper((x>>16)&0xFF)<<16)
1314 + (toupper((x>>24)&0xFF)<<24);