utils.c
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上传日期:2022-07-11
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文件大小:34k
- /*
- * utils for libavcodec
- * Copyright (c) 2001 Fabrice Bellard.
- * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
- /**
- * @file utils.c
- * utils.
- */
- /* needed for mkstemp() */
- #define _XOPEN_SOURCE 600
- //#include "libavutil/avstring.h"
- #include "dsputil.h"
- #include "internal.h"
- //#include "integer.h"
- //#include "crc.h"
- //#include "avcodec.h"
- //#include "dsputil.h"
- //#include "opt.h"
- #include "imgconvert.h"
- //#include "audioconvert.h"
- #include <stdlib.h>
- #include <stdarg.h>
- #include <limits.h>
- #include <float.h>
- #include <io.h>
- #if !defined(HAVE_MKSTEMP)
- #include <fcntl.h>
- #endif
- const uint8_t ff_reverse[256]={
- 0x00,0x80,0x40,0xC0,0x20,0xA0,0x60,0xE0,0x10,0x90,0x50,0xD0,0x30,0xB0,0x70,0xF0,
- 0x08,0x88,0x48,0xC8,0x28,0xA8,0x68,0xE8,0x18,0x98,0x58,0xD8,0x38,0xB8,0x78,0xF8,
- 0x04,0x84,0x44,0xC4,0x24,0xA4,0x64,0xE4,0x14,0x94,0x54,0xD4,0x34,0xB4,0x74,0xF4,
- 0x0C,0x8C,0x4C,0xCC,0x2C,0xAC,0x6C,0xEC,0x1C,0x9C,0x5C,0xDC,0x3C,0xBC,0x7C,0xFC,
- 0x02,0x82,0x42,0xC2,0x22,0xA2,0x62,0xE2,0x12,0x92,0x52,0xD2,0x32,0xB2,0x72,0xF2,
- 0x0A,0x8A,0x4A,0xCA,0x2A,0xAA,0x6A,0xEA,0x1A,0x9A,0x5A,0xDA,0x3A,0xBA,0x7A,0xFA,
- 0x06,0x86,0x46,0xC6,0x26,0xA6,0x66,0xE6,0x16,0x96,0x56,0xD6,0x36,0xB6,0x76,0xF6,
- 0x0E,0x8E,0x4E,0xCE,0x2E,0xAE,0x6E,0xEE,0x1E,0x9E,0x5E,0xDE,0x3E,0xBE,0x7E,0xFE,
- 0x01,0x81,0x41,0xC1,0x21,0xA1,0x61,0xE1,0x11,0x91,0x51,0xD1,0x31,0xB1,0x71,0xF1,
- 0x09,0x89,0x49,0xC9,0x29,0xA9,0x69,0xE9,0x19,0x99,0x59,0xD9,0x39,0xB9,0x79,0xF9,
- 0x05,0x85,0x45,0xC5,0x25,0xA5,0x65,0xE5,0x15,0x95,0x55,0xD5,0x35,0xB5,0x75,0xF5,
- 0x0D,0x8D,0x4D,0xCD,0x2D,0xAD,0x6D,0xED,0x1D,0x9D,0x5D,0xDD,0x3D,0xBD,0x7D,0xFD,
- 0x03,0x83,0x43,0xC3,0x23,0xA3,0x63,0xE3,0x13,0x93,0x53,0xD3,0x33,0xB3,0x73,0xF3,
- 0x0B,0x8B,0x4B,0xCB,0x2B,0xAB,0x6B,0xEB,0x1B,0x9B,0x5B,0xDB,0x3B,0xBB,0x7B,0xFB,
- 0x07,0x87,0x47,0xC7,0x27,0xA7,0x67,0xE7,0x17,0x97,0x57,0xD7,0x37,0xB7,0x77,0xF7,
- 0x0F,0x8F,0x4F,0xCF,0x2F,0xAF,0x6F,0xEF,0x1F,0x9F,0x5F,0xDF,0x3F,0xBF,0x7F,0xFF,
- };
- static int volatile entangled_thread_counter=0;
- void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size)
- {
- if(min_size < *size)
- return ptr;
- *size= FFMAX(17*min_size/16 + 32, min_size);
- ptr= av_realloc(ptr, *size);
- 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
- *size= 0;
- return ptr;
- }
- /* encoder management */
- static AVCodec *first_avcodec = NULL;
- AVCodec *av_codec_next(AVCodec *c){
- if(c) return c->next;
- else return first_avcodec;
- }
- void register_avcodec(AVCodec *codec)
- {
- AVCodec **p;
- avcodec_init();
- p = &first_avcodec;
- while (*p != NULL) p = &(*p)->next;
- *p = codec;
- codec->next = NULL;
- }
- void avcodec_set_dimensions(AVCodecContext *s, int width, int height){
- s->coded_width = width;
- s->coded_height= height;
- s->width = -((-width )>>s->lowres);
- s->height= -((-height)>>s->lowres);
- }
- typedef struct InternalBuffer{
- int last_pic_num;
- uint8_t *base[4];
- uint8_t *data[4];
- int linesize[4];
- int width, height;
- enum PixelFormat pix_fmt;
- }InternalBuffer;
- #define INTERNAL_BUFFER_SIZE 32
- #define ALIGN(x, a) (((x)+(a)-1)&~((a)-1))
- void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
- int w_align= 1;
- int h_align= 1;
- switch(s->pix_fmt){
- case PIX_FMT_YUV420P:
- case PIX_FMT_YUYV422:
- case PIX_FMT_UYVY422:
- case PIX_FMT_YUV422P:
- case PIX_FMT_YUV444P:
- case PIX_FMT_GRAY8:
- case PIX_FMT_GRAY16BE:
- case PIX_FMT_GRAY16LE:
- case PIX_FMT_YUVJ420P:
- case PIX_FMT_YUVJ422P:
- case PIX_FMT_YUVJ444P:
- case PIX_FMT_YUVA420P:
- w_align= 16; //FIXME check for non mpeg style codecs and use less alignment
- h_align= 16;
- break;
- case PIX_FMT_YUV411P:
- case PIX_FMT_UYYVYY411:
- w_align=32;
- h_align=8;
- break;
- case PIX_FMT_YUV410P:
- if(s->codec_id == CODEC_ID_SVQ1){
- w_align=64;
- h_align=64;
- }
- case PIX_FMT_RGB555:
- if(s->codec_id == CODEC_ID_RPZA){
- w_align=4;
- h_align=4;
- }
- case PIX_FMT_PAL8:
- if(s->codec_id == CODEC_ID_SMC){
- w_align=4;
- h_align=4;
- }
- break;
- case PIX_FMT_BGR24:
- if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
- w_align=4;
- h_align=4;
- }
- break;
- default:
- w_align= 1;
- h_align= 1;
- break;
- }
- *width = ALIGN(*width , w_align);
- *height= ALIGN(*height, h_align);
- if(s->codec_id == CODEC_ID_H264)
- *height+=2; // some of the optimized chroma MC reads one line too much
- }
- int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h){
- if((int)w>0 && (int)h>0 && (w+128)*(uint64_t)(h+128) < INT_MAX/4)
- return 0;
- av_log(av_log_ctx, AV_LOG_ERROR, "picture size invalid (%ux%u)n", w, h);
- return -1;
- }
- int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){
- int i;
- int w= s->width;
- int h= s->height;
- InternalBuffer *buf;
- int *picture_number;
- if(pic->data[0]!=NULL) {
- av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffern");
- return -1;
- }
- if(s->internal_buffer_count >= INTERNAL_BUFFER_SIZE) {
- av_log(s, AV_LOG_ERROR, "internal_buffer_count overflow (missing release_buffer?)n");
- return -1;
- }
- if(avcodec_check_dimensions(s,w,h))
- return -1;
- if(s->internal_buffer==NULL){
- s->internal_buffer= av_mallocz((INTERNAL_BUFFER_SIZE+1)*sizeof(InternalBuffer));
- }
- #if 0
- s->internal_buffer= av_fast_realloc(
- s->internal_buffer,
- &s->internal_buffer_size,
- sizeof(InternalBuffer)*FFMAX(99, s->internal_buffer_count+1)/*FIXME*/
- );
- #endif
- buf= &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
- picture_number= &(((InternalBuffer*)s->internal_buffer)[INTERNAL_BUFFER_SIZE]).last_pic_num; //FIXME ugly hack
- (*picture_number)++;
- if(buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)){
- for(i=0; i<4; i++){
- av_freep(&buf->base[i]);
- buf->data[i]= NULL;
- }
- }
- if(buf->base[0]){
- pic->age= *picture_number - buf->last_pic_num;
- buf->last_pic_num= *picture_number;
- }else{
- int h_chroma_shift, v_chroma_shift;
- int size[4] = {0};
- int tmpsize;
- AVPicture picture;
- int stride_align[4];
- avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
- avcodec_align_dimensions(s, &w, &h);
- if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
- w+= EDGE_WIDTH*2;
- h+= EDGE_WIDTH*2;
- }
- ff_fill_linesize(&picture, s->pix_fmt, w);
- for (i=0; i<4; i++){
- //STRIDE_ALIGN is 8 for SSE* but this does not work for SVQ1 chroma planes
- //we could change STRIDE_ALIGN to 16 for x86/sse but it would increase the
- //picture size unneccessarily in some cases. The solution here is not
- //pretty and better ideas are welcome!
- #ifdef HAVE_MMX
- if(s->codec_id == CODEC_ID_SVQ1)
- stride_align[i]= 16;
- else
- #endif
- stride_align[i] = STRIDE_ALIGN;
- picture.linesize[i] = ALIGN(picture.linesize[i], stride_align[i]);
- }
- tmpsize = ff_fill_pointer(&picture, NULL, s->pix_fmt, h);
- for (i=0; i<3 && picture.data[i+1]; i++)
- size[i] = picture.data[i+1] - picture.data[i];
- size[i] = tmpsize - (picture.data[i] - picture.data[0]);
- buf->last_pic_num= -256*256*256*64;
- memset(buf->base, 0, sizeof(buf->base));
- memset(buf->data, 0, sizeof(buf->data));
- for(i=0; i<4 && size[i]; i++){
- const int h_shift= i==0 ? 0 : h_chroma_shift;
- const int v_shift= i==0 ? 0 : v_chroma_shift;
- buf->linesize[i]= picture.linesize[i];
- buf->base[i]= av_malloc(size[i]+16); //FIXME 16
- if(buf->base[i]==NULL) return -1;
- memset(buf->base[i], 128, size[i]);
- // no edge if EDEG EMU or not planar YUV, we check for PAL8 redundantly to protect against a exploitable bug regression ...
- if((s->flags&CODEC_FLAG_EMU_EDGE) || (s->pix_fmt == PIX_FMT_PAL8) || !size[2])
- buf->data[i] = buf->base[i];
- else
- buf->data[i] = buf->base[i] + ALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift), stride_align[i]);
- }
- buf->width = s->width;
- buf->height = s->height;
- buf->pix_fmt= s->pix_fmt;
- pic->age= 256*256*256*64;
- }
- pic->type= FF_BUFFER_TYPE_INTERNAL;
- for(i=0; i<4; i++){
- pic->base[i]= buf->base[i];
- pic->data[i]= buf->data[i];
- pic->linesize[i]= buf->linesize[i];
- }
- s->internal_buffer_count++;
- pic->reordered_opaque= s->reordered_opaque;
- if(s->debug&FF_DEBUG_BUFFERS)
- av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d buffers usedn", pic, s->internal_buffer_count);
- return 0;
- }
- void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
- int i;
- InternalBuffer *buf, *last;
- assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
- assert(s->internal_buffer_count);
- buf = NULL; /* avoids warning */
- for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize
- buf= &((InternalBuffer*)s->internal_buffer)[i];
- if(buf->data[0] == pic->data[0])
- break;
- }
- assert(i < s->internal_buffer_count);
- s->internal_buffer_count--;
- last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
- FFSWAP(InternalBuffer, *buf, *last);
- for(i=0; i<4; i++){
- pic->data[i]=NULL;
- // pic->base[i]=NULL;
- }
- //printf("R%Xn", pic->opaque);
- if(s->debug&FF_DEBUG_BUFFERS)
- av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d buffers usedn", pic, s->internal_buffer_count);
- }
- int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
- AVFrame temp_pic;
- int i;
- /* If no picture return a new buffer */
- if(pic->data[0] == NULL) {
- /* We will copy from buffer, so must be readable */
- pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
- return s->get_buffer(s, pic);
- }
- /* If internal buffer type return the same buffer */
- if(pic->type == FF_BUFFER_TYPE_INTERNAL)
- return 0;
- /*
- * Not internal type and reget_buffer not overridden, emulate cr buffer
- */
- temp_pic = *pic;
- for(i = 0; i < 4; i++)
- pic->data[i] = pic->base[i] = NULL;
- pic->opaque = NULL;
- /* Allocate new frame */
- if (s->get_buffer(s, pic))
- return -1;
- /* Copy image data from old buffer to new buffer */
- av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
- s->height);
- s->release_buffer(s, &temp_pic); // Release old frame
- return 0;
- }
- int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size){
- int i;
- for(i=0; i<count; i++){
- int r= func(c, (char*)arg + i*size);
- if(ret) ret[i]= r;
- }
- return 0;
- }
- enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt){
- return fmt[0];
- }
- void avcodec_get_frame_defaults(AVFrame *pic){
- memset(pic, 0, sizeof(AVFrame));
- pic->pts= AV_NOPTS_VALUE;
- pic->key_frame= 1;
- }
- AVFrame *avcodec_alloc_frame(void){
- AVFrame *pic= av_malloc(sizeof(AVFrame));
- if(pic==NULL) return NULL;
- avcodec_get_frame_defaults(pic);
- return pic;
- }
- int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
- {
- int ret= -1;
- entangled_thread_counter++;
- if(entangled_thread_counter != 1){
- av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()n");
- goto end;
- }
- if(avctx->codec || !codec)
- goto end;
- if (codec->priv_data_size > 0) {
- avctx->priv_data = av_mallocz(codec->priv_data_size);
- if (!avctx->priv_data) {
- ret = AVERROR(ENOMEM);
- goto end;
- }
- } else {
- avctx->priv_data = NULL;
- }
- if(avctx->coded_width && avctx->coded_height)
- avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
- else if(avctx->width && avctx->height)
- avcodec_set_dimensions(avctx, avctx->width, avctx->height);
- if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height)){
- av_freep(&avctx->priv_data);
- ret = AVERROR(EINVAL);
- goto end;
- }
- avctx->codec = codec;
- avctx->codec_id = codec->id;
- avctx->frame_number = 0;
- if(avctx->codec->init){
- ret = avctx->codec->init(avctx);
- if (ret < 0) {
- av_freep(&avctx->priv_data);
- avctx->codec= NULL;
- goto end;
- }
- }
- ret=0;
- end:
- entangled_thread_counter--;
- return ret;
- }
- int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
- const short *samples)
- {
- if(buf_size < FF_MIN_BUFFER_SIZE && 0){
- av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum sizen");
- return -1;
- }
- if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
- int ret = avctx->codec->encode(avctx, buf, buf_size, (void *)samples);
- avctx->frame_number++;
- return ret;
- }else
- return 0;
- }
- int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
- const AVFrame *pict)
- {
- if(buf_size < FF_MIN_BUFFER_SIZE){
- av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum sizen");
- return -1;
- }
- if(avcodec_check_dimensions(avctx,avctx->width,avctx->height))
- return -1;
- if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
- int ret = avctx->codec->encode(avctx, buf, buf_size, (void *)pict);
- avctx->frame_number++;
- emms_c(); //needed to avoid an emms_c() call before every return;
- return ret;
- }else
- return 0;
- }
- int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
- const AVSubtitle *sub)
- {
- int ret;
- ret = avctx->codec->encode(avctx, buf, buf_size, (void *)sub);
- avctx->frame_number++;
- return ret;
- }
- int attribute_align_arg avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
- int *got_picture_ptr,
- const uint8_t *buf, int buf_size)
- {
- int ret;
- *got_picture_ptr= 0;
- if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height))
- return -1;
- if((avctx->codec->capabilities & CODEC_CAP_DELAY) || buf_size){
- ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
- buf, buf_size);
- emms_c(); //needed to avoid an emms_c() call before every return;
- if (*got_picture_ptr)
- avctx->frame_number++;
- }else
- ret= 0;
- return ret;
- }
- int attribute_align_arg avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples,
- int *frame_size_ptr,
- const uint8_t *buf, int buf_size)
- {
- int ret;
- if((avctx->codec->capabilities & CODEC_CAP_DELAY) || buf_size){
- //FIXME remove the check below _after_ ensuring that all audio check that the available space is enough
- if(*frame_size_ptr < AVCODEC_MAX_AUDIO_FRAME_SIZE){
- av_log(avctx, AV_LOG_ERROR, "buffer smaller than AVCODEC_MAX_AUDIO_FRAME_SIZEn");
- return -1;
- }
- if(*frame_size_ptr < FF_MIN_BUFFER_SIZE ||
- *frame_size_ptr < avctx->channels * avctx->frame_size * (int)sizeof(int16_t)){
- av_log(avctx, AV_LOG_ERROR, "buffer %d too smalln", *frame_size_ptr);
- return -1;
- }
- ret = avctx->codec->decode(avctx, samples, frame_size_ptr,
- buf, buf_size);
- avctx->frame_number++;
- }else{
- ret= 0;
- *frame_size_ptr=0;
- }
- return ret;
- }
- int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
- int *got_sub_ptr,
- const uint8_t *buf, int buf_size)
- {
- int ret;
- *got_sub_ptr = 0;
- ret = avctx->codec->decode(avctx, sub, got_sub_ptr,
- buf, buf_size);
- if (*got_sub_ptr)
- avctx->frame_number++;
- return ret;
- }
- int avcodec_close(AVCodecContext *avctx)
- {
- entangled_thread_counter++;
- if(entangled_thread_counter != 1){
- av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()n");
- entangled_thread_counter--;
- return -1;
- }
- //if (ENABLE_THREADS && avctx->thread_opaque)
- // avcodec_thread_free(avctx);
-
- if (avctx->codec->close)
- avctx->codec->close(avctx);
-
- avcodec_default_free_buffers(avctx);
- av_freep(&avctx->priv_data);
- avctx->codec = NULL;
- entangled_thread_counter--;
- return 0;
- }
- AVCodec *avcodec_find_encoder(enum CodecID id)
- {
- AVCodec *p;
- p = first_avcodec;
- while (p) {
- if (p->encode != NULL && p->id == id)
- return p;
- p = p->next;
- }
- return NULL;
- }
- AVCodec *avcodec_find_encoder_by_name(const char *name)
- {
- AVCodec *p;
- if (!name)
- return NULL;
- p = first_avcodec;
- while (p) {
- if (p->encode != NULL && strcmp(name,p->name) == 0)
- return p;
- p = p->next;
- }
- return NULL;
- }
- AVCodec *avcodec_find_decoder(enum CodecID id)
- {
- AVCodec *p;
- p = first_avcodec;
- while (p) {
- if (p->decode != NULL && p->id == id)
- return p;
- p = p->next;
- }
- return NULL;
- }
- AVCodec *avcodec_find_decoder_by_name(const char *name)
- {
- AVCodec *p;
- if (!name)
- return NULL;
- p = first_avcodec;
- while (p) {
- if (p->decode != NULL && strcmp(name,p->name) == 0)
- return p;
- p = p->next;
- }
- return NULL;
- }
- int64_t ff_gcd(int64_t a, int64_t b){
- if(b) return ff_gcd(b, a%b);
- else return a;
- }
- void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
- {
- const char *codec_name;
- AVCodec *p;
- char buf1[32];
- int bitrate;
- AVRational display_aspect_ratio;
- if (encode)
- p = avcodec_find_encoder(enc->codec_id);
- else
- p = avcodec_find_decoder(enc->codec_id);
- if (p) {
- codec_name = p->name;
- if (!encode && enc->codec_id == CODEC_ID_MP3) {
- if (enc->sub_id == 2)
- codec_name = "mp2";
- else if (enc->sub_id == 1)
- codec_name = "mp1";
- }
- } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
- /* fake mpeg2 transport stream codec (currently not
- registered) */
- codec_name = "mpeg2ts";
- } else if (enc->codec_name[0] != ' ') {
- codec_name = enc->codec_name;
- } else {
- /* output avi tags */
- if( isprint(enc->codec_tag&0xFF) && isprint((enc->codec_tag>>8)&0xFF)
- && isprint((enc->codec_tag>>16)&0xFF) && isprint((enc->codec_tag>>24)&0xFF)){
- snprintf(buf1, sizeof(buf1), "%c%c%c%c / 0x%04X",
- enc->codec_tag & 0xff,
- (enc->codec_tag >> 8) & 0xff,
- (enc->codec_tag >> 16) & 0xff,
- (enc->codec_tag >> 24) & 0xff,
- enc->codec_tag);
- } else {
- snprintf(buf1, sizeof(buf1), "0x%04x", enc->codec_tag);
- }
- codec_name = buf1;
- }
- switch(enc->codec_type) {
- case CODEC_TYPE_VIDEO:
- snprintf(buf, buf_size,
- "Video: %s%s",
- codec_name, enc->mb_decision ? " (hq)" : "");
- if (enc->pix_fmt != PIX_FMT_NONE) {
- snprintf(buf + strlen(buf), buf_size - strlen(buf),
- ", %s",
- avcodec_get_pix_fmt_name(enc->pix_fmt));
- }
- if (enc->width) {
- snprintf(buf + strlen(buf), buf_size - strlen(buf),
- ", %dx%d",
- enc->width, enc->height);
- if (enc->sample_aspect_ratio.num) {
- av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
- enc->width*enc->sample_aspect_ratio.num,
- enc->height*enc->sample_aspect_ratio.den,
- 1024*1024);
- snprintf(buf + strlen(buf), buf_size - strlen(buf),
- " [PAR %d:%d DAR %d:%d]",
- enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
- display_aspect_ratio.num, display_aspect_ratio.den);
- }
- if(av_log_get_level() >= AV_LOG_DEBUG){
- int g= (int)ff_gcd(enc->time_base.num, enc->time_base.den);
- snprintf(buf + strlen(buf), buf_size - strlen(buf),
- ", %d/%d",
- enc->time_base.num/g, enc->time_base.den/g);
- }
- }
- if (encode) {
- snprintf(buf + strlen(buf), buf_size - strlen(buf),
- ", q=%d-%d", enc->qmin, enc->qmax);
- }
- bitrate = enc->bit_rate;
- break;
- /*case CODEC_TYPE_AUDIO:
- snprintf(buf, buf_size,
- "Audio: %s",
- codec_name);
- if (enc->sample_rate) {
- snprintf(buf + strlen(buf), buf_size - strlen(buf),
- ", %d Hz", enc->sample_rate);
- }
- av_strlcat(buf, ", ", buf_size);
- avcodec_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
- if (enc->sample_fmt != SAMPLE_FMT_NONE) {
- snprintf(buf + strlen(buf), buf_size - strlen(buf),
- ", %s", avcodec_get_sample_fmt_name(enc->sample_fmt));
- }*/
- /* for PCM codecs, compute bitrate directly */
- switch(enc->codec_id)
- {
- case CODEC_ID_PCM_F64BE:
- case CODEC_ID_PCM_F64LE:
- bitrate = enc->sample_rate * enc->channels * 64;
- break;
- case CODEC_ID_PCM_S32LE:
- case CODEC_ID_PCM_S32BE:
- case CODEC_ID_PCM_U32LE:
- case CODEC_ID_PCM_U32BE:
- case CODEC_ID_PCM_F32BE:
- case CODEC_ID_PCM_F32LE:
- bitrate = enc->sample_rate * enc->channels * 32;
- break;
- case CODEC_ID_PCM_S24LE:
- case CODEC_ID_PCM_S24BE:
- case CODEC_ID_PCM_U24LE:
- case CODEC_ID_PCM_U24BE:
- case CODEC_ID_PCM_S24DAUD:
- bitrate = enc->sample_rate * enc->channels * 24;
- break;
- case CODEC_ID_PCM_S16LE:
- case CODEC_ID_PCM_S16BE:
- case CODEC_ID_PCM_S16LE_PLANAR:
- case CODEC_ID_PCM_U16LE:
- case CODEC_ID_PCM_U16BE:
- bitrate = enc->sample_rate * enc->channels * 16;
- break;
- case CODEC_ID_PCM_S8:
- case CODEC_ID_PCM_U8:
- case CODEC_ID_PCM_ALAW:
- case CODEC_ID_PCM_MULAW:
- case CODEC_ID_PCM_ZORK:
- bitrate = enc->sample_rate * enc->channels * 8;
- break;
- default:
- bitrate = enc->bit_rate;
- break;
- }
- break;
- case CODEC_TYPE_DATA:
- snprintf(buf, buf_size, "Data: %s", codec_name);
- bitrate = enc->bit_rate;
- break;
- case CODEC_TYPE_SUBTITLE:
- snprintf(buf, buf_size, "Subtitle: %s", codec_name);
- bitrate = enc->bit_rate;
- break;
- case CODEC_TYPE_ATTACHMENT:
- snprintf(buf, buf_size, "Attachment: %s", codec_name);
- bitrate = enc->bit_rate;
- break;
- default:
- snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
- return;
- }
- if (encode) {
- if (enc->flags & CODEC_FLAG_PASS1)
- snprintf(buf + strlen(buf), buf_size - strlen(buf),
- ", pass 1");
- if (enc->flags & CODEC_FLAG_PASS2)
- snprintf(buf + strlen(buf), buf_size - strlen(buf),
- ", pass 2");
- }
- if (bitrate != 0) {
- snprintf(buf + strlen(buf), buf_size - strlen(buf),
- ", %d kb/s", bitrate / 1000);
- }
- }
- unsigned avcodec_version( void )
- {
- return LIBAVCODEC_VERSION_INT;
- }
- void avcodec_init(void)
- {
- static int initialized = 0;
- if (initialized != 0)
- return;
- initialized = 1;
- dsputil_static_init();
- }
- void avcodec_flush_buffers(AVCodecContext *avctx)
- {
- if(avctx->codec->flush)
- avctx->codec->flush(avctx);
- }
- void avcodec_default_free_buffers(AVCodecContext *s){
- int i, j;
- if(s->internal_buffer==NULL) return;
- for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
- InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
- for(j=0; j<4; j++){
- av_freep(&buf->base[j]);
- buf->data[j]= NULL;
- }
- }
- av_freep(&s->internal_buffer);
- s->internal_buffer_count=0;
- }
- char av_get_pict_type_char(int pict_type){
- switch(pict_type){
- case FF_I_TYPE: return 'I';
- case FF_P_TYPE: return 'P';
- case FF_B_TYPE: return 'B';
- case FF_S_TYPE: return 'S';
- case FF_SI_TYPE:return 'i';
- case FF_SP_TYPE:return 'p';
- case FF_BI_TYPE:return 'b';
- default: return '?';
- }
- }
- int av_get_bits_per_sample(enum CodecID codec_id){
- switch(codec_id){
- case CODEC_ID_ADPCM_SBPRO_2:
- return 2;
- case CODEC_ID_ADPCM_SBPRO_3:
- return 3;
- case CODEC_ID_ADPCM_SBPRO_4:
- case CODEC_ID_ADPCM_CT:
- return 4;
- case CODEC_ID_PCM_ALAW:
- case CODEC_ID_PCM_MULAW:
- case CODEC_ID_PCM_S8:
- case CODEC_ID_PCM_U8:
- case CODEC_ID_PCM_ZORK:
- return 8;
- case CODEC_ID_PCM_S16BE:
- case CODEC_ID_PCM_S16LE:
- case CODEC_ID_PCM_S16LE_PLANAR:
- case CODEC_ID_PCM_U16BE:
- case CODEC_ID_PCM_U16LE:
- return 16;
- case CODEC_ID_PCM_S24DAUD:
- case CODEC_ID_PCM_S24BE:
- case CODEC_ID_PCM_S24LE:
- case CODEC_ID_PCM_U24BE:
- case CODEC_ID_PCM_U24LE:
- return 24;
- case CODEC_ID_PCM_S32BE:
- case CODEC_ID_PCM_S32LE:
- case CODEC_ID_PCM_U32BE:
- case CODEC_ID_PCM_U32LE:
- case CODEC_ID_PCM_F32BE:
- case CODEC_ID_PCM_F32LE:
- return 32;
- case CODEC_ID_PCM_F64BE:
- case CODEC_ID_PCM_F64LE:
- return 64;
- default:
- return 0;
- }
- }
- int av_get_bits_per_sample_format(enum SampleFormat sample_fmt) {
- switch (sample_fmt) {
- case SAMPLE_FMT_U8:
- return 8;
- case SAMPLE_FMT_S16:
- return 16;
- case SAMPLE_FMT_S32:
- case SAMPLE_FMT_FLT:
- return 32;
- case SAMPLE_FMT_DBL:
- return 64;
- default:
- return 0;
- }
- }
- #if !defined(HAVE_THREADS)
- int avcodec_thread_init(AVCodecContext *s, int thread_count){
- return -1;
- }
- #endif
- unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
- {
- unsigned int n = 0;
- while(v >= 0xff) {
- *s++ = 0xff;
- v -= 0xff;
- n++;
- }
- *s = v;
- n++;
- return n;
- }
- /* Wrapper to work around the lack of mkstemp() on mingw/cygin.
- * Also, tries to create file in /tmp first, if possible.
- * *prefix can be a character constant; *filename will be allocated internally.
- * Returns file descriptor of opened file (or -1 on error)
- * and opened file name in **filename. */
- int av_tempfile(char *prefix, char **filename) {
- int fd=-1;
- #if !defined(HAVE_MKSTEMP)
- *filename = _tempnam(".", prefix);
- #else
- size_t len = strlen(prefix) + 12; /* room for "/tmp/" and "XXXXXX " */
- *filename = av_malloc(len);
- #endif
- /* -----common section-----*/
- if (*filename == NULL) {
- av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot allocate file namen");
- return -1;
- }
- #if !defined(HAVE_MKSTEMP)
- fd = _open(*filename, O_RDWR | O_BINARY | O_CREAT, 0444);
- #else
- snprintf(*filename, len, "/tmp/%sXXXXXX", prefix);
- fd = mkstemp(*filename);
- if (fd < 0) {
- snprintf(*filename, len, "./%sXXXXXX", prefix);
- fd = mkstemp(*filename);
- }
- #endif
- /* -----common section-----*/
- if (fd < 0) {
- av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot open temporary file %sn", *filename);
- return -1;
- }
- return fd; /* success */
- }
- typedef struct {
- const char *abbr;
- int width, height;
- } VideoFrameSizeAbbr;
- typedef struct {
- const char *abbr;
- int rate_num, rate_den;
- } VideoFrameRateAbbr;
- static const VideoFrameSizeAbbr video_frame_size_abbrs[] = {
- { "ntsc", 720, 480 },
- { "pal", 720, 576 },
- { "qntsc", 352, 240 }, /* VCD compliant NTSC */
- { "qpal", 352, 288 }, /* VCD compliant PAL */
- { "sntsc", 640, 480 }, /* square pixel NTSC */
- { "spal", 768, 576 }, /* square pixel PAL */
- { "film", 352, 240 },
- { "ntsc-film", 352, 240 },
- { "sqcif", 128, 96 },
- { "qcif", 176, 144 },
- { "cif", 352, 288 },
- { "4cif", 704, 576 },
- { "qqvga", 160, 120 },
- { "qvga", 320, 240 },
- { "vga", 640, 480 },
- { "svga", 800, 600 },
- { "xga", 1024, 768 },
- { "uxga", 1600,1200 },
- { "qxga", 2048,1536 },
- { "sxga", 1280,1024 },
- { "qsxga", 2560,2048 },
- { "hsxga", 5120,4096 },
- { "wvga", 852, 480 },
- { "wxga", 1366, 768 },
- { "wsxga", 1600,1024 },
- { "wuxga", 1920,1200 },
- { "woxga", 2560,1600 },
- { "wqsxga", 3200,2048 },
- { "wquxga", 3840,2400 },
- { "whsxga", 6400,4096 },
- { "whuxga", 7680,4800 },
- { "cga", 320, 200 },
- { "ega", 640, 350 },
- { "hd480", 852, 480 },
- { "hd720", 1280, 720 },
- { "hd1080", 1920,1080 },
- };
- static const VideoFrameRateAbbr video_frame_rate_abbrs[]= {
- { "ntsc", 30000, 1001 },
- { "pal", 25, 1 },
- { "qntsc", 30000, 1001 }, /* VCD compliant NTSC */
- { "qpal", 25, 1 }, /* VCD compliant PAL */
- { "sntsc", 30000, 1001 }, /* square pixel NTSC */
- { "spal", 25, 1 }, /* square pixel PAL */
- { "film", 24, 1 },
- { "ntsc-film", 24000, 1001 },
- };
- int av_parse_video_frame_size(int *width_ptr, int *height_ptr, const char *str)
- {
- int i;
- int n = FF_ARRAY_ELEMS(video_frame_size_abbrs);
- const char *p;
- int frame_width = 0, frame_height = 0;
- for(i=0;i<n;i++) {
- if (!strcmp(video_frame_size_abbrs[i].abbr, str)) {
- frame_width = video_frame_size_abbrs[i].width;
- frame_height = video_frame_size_abbrs[i].height;
- break;
- }
- }
- if (i == n) {
- p = str;
- frame_width = strtol(p, (char **)&p, 10);
- if (*p)
- p++;
- frame_height = strtol(p, (char **)&p, 10);
- }
- if (frame_width <= 0 || frame_height <= 0)
- return -1;
- *width_ptr = frame_width;
- *height_ptr = frame_height;
- return 0;
- }
- int av_parse_video_frame_rate(AVRational *frame_rate, const char *arg)
- {
- int i;
- int n = FF_ARRAY_ELEMS(video_frame_rate_abbrs);
- char* cp;
- /* First, we check our abbreviation table */
- for (i = 0; i < n; ++i)
- if (!strcmp(video_frame_rate_abbrs[i].abbr, arg)) {
- frame_rate->num = video_frame_rate_abbrs[i].rate_num;
- frame_rate->den = video_frame_rate_abbrs[i].rate_den;
- return 0;
- }
- /* Then, we try to parse it as fraction */
- cp = strchr(arg, '/');
- if (!cp)
- cp = strchr(arg, ':');
- if (cp) {
- char* cpp;
- frame_rate->num = strtol(arg, &cpp, 10);
- if (cpp != arg || cpp == cp)
- frame_rate->den = strtol(cp+1, &cpp, 10);
- else
- frame_rate->num = 0;
- }
- else {
- /* Finally we give up and parse it as double */
- AVRational time_base = av_d2q(strtod(arg, 0), 1001000);
- frame_rate->den = time_base.den;
- frame_rate->num = time_base.num;
- }
- if (!frame_rate->num || !frame_rate->den)
- return -1;
- else
- return 0;
- }
- void ff_log_missing_feature(void *avc, const char *feature, int want_sample)
- {
- av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your FFmpeg "
- "version to the newest one from SVN. If the problem still "
- "occurs, it means that your file has a feature which has not "
- "been implemented.", feature);
- if(want_sample)
- av_log(avc, AV_LOG_WARNING, " If you want to help, upload a sample "
- "of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ "
- "and contact the ffmpeg-devel mailing list.");
- av_log(avc, AV_LOG_WARNING, "n");
- }