mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
1308 lines
38 KiB
1308 lines
38 KiB
/* |
|
* 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. |
|
*/ |
|
|
|
/* needed for mkstemp() */ |
|
#define _XOPEN_SOURCE 600 |
|
|
|
#include "libavutil/avstring.h" |
|
#include "libavutil/integer.h" |
|
#include "libavutil/crc.h" |
|
#include "libavutil/pixdesc.h" |
|
#include "avcodec.h" |
|
#include "dsputil.h" |
|
#include "opt.h" |
|
#include "imgconvert.h" |
|
#include "audioconvert.h" |
|
#include "libxvid_internal.h" |
|
#include "internal.h" |
|
#include <stdlib.h> |
|
#include <stdarg.h> |
|
#include <limits.h> |
|
#include <float.h> |
|
#if !HAVE_MKSTEMP |
|
#include <fcntl.h> |
|
#endif |
|
|
|
static int volatile entangled_thread_counter=0; |
|
int (*ff_lockmgr_cb)(void **mutex, enum AVLockOp op); |
|
static void *codec_mutex; |
|
|
|
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; |
|
} |
|
|
|
void av_fast_malloc(void *ptr, unsigned int *size, unsigned int min_size) |
|
{ |
|
void **p = ptr; |
|
if (min_size < *size) |
|
return; |
|
*size= FFMAX(17*min_size/16 + 32, min_size); |
|
av_free(*p); |
|
*p = av_malloc(*size); |
|
if (!*p) *size = 0; |
|
} |
|
|
|
/* encoder management */ |
|
static AVCodec *first_avcodec = NULL; |
|
|
|
AVCodec *av_codec_next(AVCodec *c){ |
|
if(c) return c->next; |
|
else return first_avcodec; |
|
} |
|
|
|
void avcodec_register(AVCodec *codec) |
|
{ |
|
AVCodec **p; |
|
avcodec_init(); |
|
p = &first_avcodec; |
|
while (*p != NULL) p = &(*p)->next; |
|
*p = codec; |
|
codec->next = NULL; |
|
} |
|
|
|
#if LIBAVCODEC_VERSION_MAJOR < 53 |
|
void register_avcodec(AVCodec *codec) |
|
{ |
|
avcodec_register(codec); |
|
} |
|
#endif |
|
|
|
unsigned avcodec_get_edge_width(void) |
|
{ |
|
return EDGE_WIDTH; |
|
} |
|
|
|
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 |
|
|
|
void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height, int linesize_align[4]){ |
|
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_YUV440P: |
|
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_YUVJ440P: |
|
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; |
|
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) |
|
h_align= 32; // interlaced is rounded up to 2 MBs |
|
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: |
|
case PIX_FMT_BGR8: |
|
case PIX_FMT_RGB8: |
|
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 = FFALIGN(*width , w_align); |
|
*height= FFALIGN(*height, h_align); |
|
if(s->codec_id == CODEC_ID_H264) |
|
*height+=2; // some of the optimized chroma MC reads one line too much |
|
|
|
linesize_align[0] = |
|
linesize_align[1] = |
|
linesize_align[2] = |
|
linesize_align[3] = STRIDE_ALIGN; |
|
//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! |
|
#if HAVE_MMX |
|
if(s->codec_id == CODEC_ID_SVQ1 || s->codec_id == CODEC_ID_VP5 || |
|
s->codec_id == CODEC_ID_VP6 || s->codec_id == CODEC_ID_VP6F || |
|
s->codec_id == CODEC_ID_VP6A) { |
|
linesize_align[0] = |
|
linesize_align[1] = |
|
linesize_align[2] = 16; |
|
} |
|
#endif |
|
} |
|
|
|
void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){ |
|
int chroma_shift = av_pix_fmt_descriptors[s->pix_fmt].log2_chroma_w; |
|
int linesize_align[4]; |
|
int align; |
|
avcodec_align_dimensions2(s, width, height, linesize_align); |
|
align = FFMAX(linesize_align[0], linesize_align[3]); |
|
linesize_align[1] <<= chroma_shift; |
|
linesize_align[2] <<= chroma_shift; |
|
align = FFMAX3(align, linesize_align[1], linesize_align[2]); |
|
*width=FFALIGN(*width, align); |
|
} |
|
|
|
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/8) |
|
return 0; |
|
|
|
av_log(av_log_ctx, AV_LOG_ERROR, "picture size invalid (%ux%u)\n", w, h); |
|
return AVERROR(EINVAL); |
|
} |
|
|
|
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_buffer\n"); |
|
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; |
|
int unaligned; |
|
AVPicture picture; |
|
int stride_align[4]; |
|
|
|
avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift); |
|
|
|
avcodec_align_dimensions2(s, &w, &h, stride_align); |
|
|
|
if(!(s->flags&CODEC_FLAG_EMU_EDGE)){ |
|
w+= EDGE_WIDTH*2; |
|
h+= EDGE_WIDTH*2; |
|
} |
|
|
|
do { |
|
// NOTE: do not align linesizes individually, this breaks e.g. assumptions |
|
// that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2 |
|
ff_fill_linesize(&picture, s->pix_fmt, w); |
|
// increase alignment of w for next try (rhs gives the lowest bit set in w) |
|
w += w & ~(w-1); |
|
|
|
unaligned = 0; |
|
for (i=0; i<4; i++){ |
|
unaligned |= picture.linesize[i] % stride_align[i]; |
|
} |
|
} while (unaligned); |
|
|
|
tmpsize = ff_fill_pointer(&picture, NULL, s->pix_fmt, h); |
|
if (tmpsize < 0) |
|
return -1; |
|
|
|
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 EDGE EMU or not planar YUV |
|
if((s->flags&CODEC_FLAG_EMU_EDGE) || !size[2]) |
|
buf->data[i] = buf->base[i]; |
|
else |
|
buf->data[i] = buf->base[i] + FFALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift), stride_align[i]); |
|
} |
|
if(size[1] && !size[2]) |
|
ff_set_systematic_pal((uint32_t*)buf->data[1], s->pix_fmt); |
|
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 used\n", 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%X\n", pic->opaque); |
|
|
|
if(s->debug&FF_DEBUG_BUFFERS) |
|
av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d buffers used\n", 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) { |
|
pic->reordered_opaque= s->reordered_opaque; |
|
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; |
|
} |
|
|
|
int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr),void *arg, int *ret, int count){ |
|
int i; |
|
|
|
for(i=0; i<count; i++){ |
|
int r= func(c, arg, i, 0); |
|
if(ret) ret[i]= r; |
|
} |
|
return 0; |
|
} |
|
|
|
enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat *fmt){ |
|
while (*fmt != PIX_FMT_NONE && ff_is_hwaccel_pix_fmt(*fmt)) |
|
++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; |
|
|
|
/* If there is a user-supplied mutex locking routine, call it. */ |
|
if (ff_lockmgr_cb) { |
|
if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN)) |
|
return -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); |
|
|
|
#define SANE_NB_CHANNELS 128U |
|
if (((avctx->coded_width || avctx->coded_height) |
|
&& avcodec_check_dimensions(avctx, avctx->coded_width, avctx->coded_height)) |
|
|| avctx->channels > SANE_NB_CHANNELS) { |
|
ret = AVERROR(EINVAL); |
|
goto free_and_end; |
|
} |
|
|
|
avctx->codec = codec; |
|
if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) && |
|
avctx->codec_id == CODEC_ID_NONE) { |
|
avctx->codec_type = codec->type; |
|
avctx->codec_id = codec->id; |
|
} |
|
if(avctx->codec_id != codec->id || avctx->codec_type != codec->type){ |
|
av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n"); |
|
goto free_and_end; |
|
} |
|
avctx->frame_number = 0; |
|
if(avctx->codec->init){ |
|
ret = avctx->codec->init(avctx); |
|
if (ret < 0) { |
|
goto free_and_end; |
|
} |
|
} |
|
ret=0; |
|
end: |
|
entangled_thread_counter--; |
|
|
|
/* Release any user-supplied mutex. */ |
|
if (ff_lockmgr_cb) { |
|
(*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE); |
|
} |
|
return ret; |
|
free_and_end: |
|
av_freep(&avctx->priv_data); |
|
avctx->codec= NULL; |
|
goto end; |
|
} |
|
|
|
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 size\n"); |
|
return -1; |
|
} |
|
if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){ |
|
int ret = avctx->codec->encode(avctx, buf, buf_size, 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 size\n"); |
|
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, 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; |
|
if(sub->start_display_time) { |
|
av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n"); |
|
return -1; |
|
} |
|
if(sub->num_rects == 0 || !sub->rects) |
|
return -1; |
|
ret = avctx->codec->encode(avctx, buf, buf_size, sub); |
|
avctx->frame_number++; |
|
return ret; |
|
} |
|
|
|
#if LIBAVCODEC_VERSION_MAJOR < 53 |
|
int attribute_align_arg avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture, |
|
int *got_picture_ptr, |
|
const uint8_t *buf, int buf_size) |
|
{ |
|
AVPacket avpkt; |
|
av_init_packet(&avpkt); |
|
avpkt.data = buf; |
|
avpkt.size = buf_size; |
|
// HACK for CorePNG to decode as normal PNG by default |
|
avpkt.flags = AV_PKT_FLAG_KEY; |
|
|
|
return avcodec_decode_video2(avctx, picture, got_picture_ptr, &avpkt); |
|
} |
|
#endif |
|
|
|
int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture, |
|
int *got_picture_ptr, |
|
AVPacket *avpkt) |
|
{ |
|
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) || avpkt->size){ |
|
ret = avctx->codec->decode(avctx, picture, got_picture_ptr, |
|
avpkt); |
|
|
|
emms_c(); //needed to avoid an emms_c() call before every return; |
|
|
|
if (*got_picture_ptr) |
|
avctx->frame_number++; |
|
}else |
|
ret= 0; |
|
|
|
return ret; |
|
} |
|
|
|
#if LIBAVCODEC_VERSION_MAJOR < 53 |
|
int attribute_align_arg avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples, |
|
int *frame_size_ptr, |
|
const uint8_t *buf, int buf_size) |
|
{ |
|
AVPacket avpkt; |
|
av_init_packet(&avpkt); |
|
avpkt.data = buf; |
|
avpkt.size = buf_size; |
|
|
|
return avcodec_decode_audio3(avctx, samples, frame_size_ptr, &avpkt); |
|
} |
|
#endif |
|
|
|
int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples, |
|
int *frame_size_ptr, |
|
AVPacket *avpkt) |
|
{ |
|
int ret; |
|
|
|
if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->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_SIZE\n"); |
|
return -1; |
|
} |
|
if(*frame_size_ptr < FF_MIN_BUFFER_SIZE || |
|
*frame_size_ptr < avctx->channels * avctx->frame_size * sizeof(int16_t)){ |
|
av_log(avctx, AV_LOG_ERROR, "buffer %d too small\n", *frame_size_ptr); |
|
return -1; |
|
} |
|
|
|
ret = avctx->codec->decode(avctx, samples, frame_size_ptr, avpkt); |
|
avctx->frame_number++; |
|
}else{ |
|
ret= 0; |
|
*frame_size_ptr=0; |
|
} |
|
return ret; |
|
} |
|
|
|
#if LIBAVCODEC_VERSION_MAJOR < 53 |
|
int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub, |
|
int *got_sub_ptr, |
|
const uint8_t *buf, int buf_size) |
|
{ |
|
AVPacket avpkt; |
|
av_init_packet(&avpkt); |
|
avpkt.data = buf; |
|
avpkt.size = buf_size; |
|
|
|
return avcodec_decode_subtitle2(avctx, sub, got_sub_ptr, &avpkt); |
|
} |
|
#endif |
|
|
|
int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub, |
|
int *got_sub_ptr, |
|
AVPacket *avpkt) |
|
{ |
|
int ret; |
|
|
|
*got_sub_ptr = 0; |
|
ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt); |
|
if (*got_sub_ptr) |
|
avctx->frame_number++; |
|
return ret; |
|
} |
|
|
|
av_cold int avcodec_close(AVCodecContext *avctx) |
|
{ |
|
/* If there is a user-supplied mutex locking routine, call it. */ |
|
if (ff_lockmgr_cb) { |
|
if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN)) |
|
return -1; |
|
} |
|
|
|
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 (HAVE_THREADS && avctx->thread_opaque) |
|
avcodec_thread_free(avctx); |
|
if (avctx->codec && avctx->codec->close) |
|
avctx->codec->close(avctx); |
|
avcodec_default_free_buffers(avctx); |
|
avctx->coded_frame = NULL; |
|
av_freep(&avctx->priv_data); |
|
if(avctx->codec && avctx->codec->encode) |
|
av_freep(&avctx->extradata); |
|
avctx->codec = NULL; |
|
entangled_thread_counter--; |
|
|
|
/* Release any user-supplied mutex. */ |
|
if (ff_lockmgr_cb) { |
|
(*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE); |
|
} |
|
return 0; |
|
} |
|
|
|
AVCodec *avcodec_find_encoder(enum CodecID id) |
|
{ |
|
AVCodec *p, *experimental=NULL; |
|
p = first_avcodec; |
|
while (p) { |
|
if (p->encode != NULL && p->id == id) { |
|
if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) { |
|
experimental = p; |
|
} else |
|
return p; |
|
} |
|
p = p->next; |
|
} |
|
return experimental; |
|
} |
|
|
|
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; |
|
} |
|
|
|
static int get_bit_rate(AVCodecContext *ctx) |
|
{ |
|
int bit_rate; |
|
int bits_per_sample; |
|
|
|
switch(ctx->codec_type) { |
|
case AVMEDIA_TYPE_VIDEO: |
|
case AVMEDIA_TYPE_DATA: |
|
case AVMEDIA_TYPE_SUBTITLE: |
|
case AVMEDIA_TYPE_ATTACHMENT: |
|
bit_rate = ctx->bit_rate; |
|
break; |
|
case AVMEDIA_TYPE_AUDIO: |
|
bits_per_sample = av_get_bits_per_sample(ctx->codec_id); |
|
bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate; |
|
break; |
|
default: |
|
bit_rate = 0; |
|
break; |
|
} |
|
return bit_rate; |
|
} |
|
|
|
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; |
|
} 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] != '\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 AVMEDIA_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= av_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); |
|
} |
|
break; |
|
case AVMEDIA_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)); |
|
} |
|
break; |
|
case AVMEDIA_TYPE_DATA: |
|
snprintf(buf, buf_size, "Data: %s", codec_name); |
|
break; |
|
case AVMEDIA_TYPE_SUBTITLE: |
|
snprintf(buf, buf_size, "Subtitle: %s", codec_name); |
|
break; |
|
case AVMEDIA_TYPE_ATTACHMENT: |
|
snprintf(buf, buf_size, "Attachment: %s", codec_name); |
|
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"); |
|
} |
|
bitrate = get_bit_rate(enc); |
|
if (bitrate != 0) { |
|
snprintf(buf + strlen(buf), buf_size - strlen(buf), |
|
", %d kb/s", bitrate / 1000); |
|
} |
|
} |
|
|
|
unsigned avcodec_version( void ) |
|
{ |
|
return LIBAVCODEC_VERSION_INT; |
|
} |
|
|
|
const char *avcodec_configuration(void) |
|
{ |
|
return FFMPEG_CONFIGURATION; |
|
} |
|
|
|
const char *avcodec_license(void) |
|
{ |
|
#define LICENSE_PREFIX "libavcodec license: " |
|
return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1; |
|
} |
|
|
|
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; |
|
|
|
if (s->internal_buffer_count) |
|
av_log(s, AV_LOG_WARNING, "Found %i unreleased buffers!\n", s->internal_buffer_count); |
|
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: |
|
case CODEC_ID_ADPCM_IMA_WAV: |
|
case CODEC_ID_ADPCM_MS: |
|
case CODEC_ID_ADPCM_YAMAHA: |
|
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 !HAVE_THREADS |
|
int avcodec_thread_init(AVCodecContext *s, int thread_count){ |
|
s->thread_count = 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 !HAVE_MKSTEMP |
|
*filename = tempnam(".", prefix); |
|
#else |
|
size_t len = strlen(prefix) + 12; /* room for "/tmp/" and "XXXXXX\0" */ |
|
*filename = av_malloc(len); |
|
#endif |
|
/* -----common section-----*/ |
|
if (*filename == NULL) { |
|
av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot allocate file name\n"); |
|
return -1; |
|
} |
|
#if !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 %s\n", *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 }, |
|
{ "16cif", 1408,1152 }, |
|
{ "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); |
|
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, &p, 10); |
|
if (*p) |
|
p++; |
|
frame_height = strtol(p, &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; |
|
} |
|
|
|
int ff_match_2uint16(const uint16_t (*tab)[2], int size, int a, int b){ |
|
int i; |
|
for(i=0; i<size && !(tab[i][0]==a && tab[i][1]==b); i++); |
|
return i; |
|
} |
|
|
|
void av_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_ask_for_sample(avc, NULL); |
|
else |
|
av_log(avc, AV_LOG_WARNING, "\n"); |
|
} |
|
|
|
void av_log_ask_for_sample(void *avc, const char *msg) |
|
{ |
|
if (msg) |
|
av_log(avc, AV_LOG_WARNING, "%s ", msg); |
|
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.\n"); |
|
} |
|
|
|
static AVHWAccel *first_hwaccel = NULL; |
|
|
|
void av_register_hwaccel(AVHWAccel *hwaccel) |
|
{ |
|
AVHWAccel **p = &first_hwaccel; |
|
while (*p) |
|
p = &(*p)->next; |
|
*p = hwaccel; |
|
hwaccel->next = NULL; |
|
} |
|
|
|
AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel) |
|
{ |
|
return hwaccel ? hwaccel->next : first_hwaccel; |
|
} |
|
|
|
AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt) |
|
{ |
|
AVHWAccel *hwaccel=NULL; |
|
|
|
while((hwaccel= av_hwaccel_next(hwaccel))){ |
|
if ( hwaccel->id == codec_id |
|
&& hwaccel->pix_fmt == pix_fmt) |
|
return hwaccel; |
|
} |
|
return NULL; |
|
} |
|
|
|
int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op)) |
|
{ |
|
if (ff_lockmgr_cb) { |
|
if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY)) |
|
return -1; |
|
} |
|
|
|
ff_lockmgr_cb = cb; |
|
|
|
if (ff_lockmgr_cb) { |
|
if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE)) |
|
return -1; |
|
} |
|
return 0; |
|
} |
|
|
|
unsigned int ff_toupper4(unsigned int x) |
|
{ |
|
return toupper( x &0xFF) |
|
+ (toupper((x>>8 )&0xFF)<<8 ) |
|
+ (toupper((x>>16)&0xFF)<<16) |
|
+ (toupper((x>>24)&0xFF)<<24); |
|
}
|
|
|