| /* |
| * 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. |
| */ |
| |
| #include "libavutil/avassert.h" |
| #include "libavutil/avstring.h" |
| #include "libavutil/crc.h" |
| #include "libavutil/mathematics.h" |
| #include "libavutil/pixdesc.h" |
| #include "libavutil/audioconvert.h" |
| #include "libavutil/imgutils.h" |
| #include "libavutil/samplefmt.h" |
| #include "libavutil/dict.h" |
| #include "libavutil/avassert.h" |
| #include "avcodec.h" |
| #include "dsputil.h" |
| #include "libavutil/opt.h" |
| #include "imgconvert.h" |
| #include "thread.h" |
| #include "audioconvert.h" |
| #include "internal.h" |
| #include "bytestream.h" |
| #include <stdlib.h> |
| #include <stdarg.h> |
| #include <limits.h> |
| #include <float.h> |
| |
| static int volatile entangled_thread_counter=0; |
| static int (*ff_lockmgr_cb)(void **mutex, enum AVLockOp op); |
| static void *codec_mutex; |
| static void *avformat_mutex; |
| |
| void *av_fast_realloc(void *ptr, unsigned int *size, size_t min_size) |
| { |
| if(min_size < *size) |
| return ptr; |
| |
| min_size= FFMAX(17*min_size/16 + 32, min_size); |
| |
| ptr= av_realloc(ptr, min_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 |
| min_size= 0; |
| |
| *size= min_size; |
| |
| return ptr; |
| } |
| |
| static inline int ff_fast_malloc(void *ptr, unsigned int *size, size_t min_size, int zero_realloc) |
| { |
| void **p = ptr; |
| if (min_size < *size) |
| return 0; |
| min_size= FFMAX(17*min_size/16 + 32, min_size); |
| av_free(*p); |
| *p = zero_realloc ? av_mallocz(min_size) : av_malloc(min_size); |
| if (!*p) min_size = 0; |
| *size= min_size; |
| return 1; |
| } |
| |
| void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size) |
| { |
| ff_fast_malloc(ptr, size, min_size, 0); |
| } |
| |
| void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size) |
| { |
| uint8_t **p = ptr; |
| if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) { |
| *p = NULL; |
| *size = 0; |
| return; |
| } |
| if (!ff_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE, 1)) |
| memset(*p + min_size, 0, FF_INPUT_BUFFER_PADDING_SIZE); |
| } |
| |
| /* encoder management */ |
| static AVCodec *first_avcodec = NULL; |
| |
| AVCodec *av_codec_next(AVCodec *c){ |
| if(c) return c->next; |
| else return first_avcodec; |
| } |
| |
| #if !FF_API_AVCODEC_INIT |
| static |
| #endif |
| void avcodec_init(void) |
| { |
| static int initialized = 0; |
| |
| if (initialized != 0) |
| return; |
| initialized = 1; |
| |
| dsputil_static_init(); |
| } |
| |
| static av_always_inline int codec_is_encoder(AVCodec *codec) |
| { |
| return codec && (codec->encode || codec->encode2); |
| } |
| |
| static av_always_inline int codec_is_decoder(AVCodec *codec) |
| { |
| return codec && codec->decode; |
| } |
| |
| void avcodec_register(AVCodec *codec) |
| { |
| AVCodec **p; |
| avcodec_init(); |
| p = &first_avcodec; |
| while (*p != NULL) p = &(*p)->next; |
| *p = codec; |
| codec->next = NULL; |
| |
| if (codec->init_static_data) |
| codec->init_static_data(codec); |
| } |
| |
| 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); |
| } |
| |
| #define INTERNAL_BUFFER_SIZE (32+1) |
| |
| void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height, |
| int linesize_align[AV_NUM_DATA_POINTERS]) |
| { |
| int i; |
| 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_GBRP: |
| 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: |
| case PIX_FMT_YUV420P9LE: |
| case PIX_FMT_YUV420P9BE: |
| case PIX_FMT_YUV420P10LE: |
| case PIX_FMT_YUV420P10BE: |
| case PIX_FMT_YUV422P9LE: |
| case PIX_FMT_YUV422P9BE: |
| case PIX_FMT_YUV422P10LE: |
| case PIX_FMT_YUV422P10BE: |
| case PIX_FMT_YUV444P9LE: |
| case PIX_FMT_YUV444P9BE: |
| case PIX_FMT_YUV444P10LE: |
| case PIX_FMT_YUV444P10BE: |
| case PIX_FMT_GBRP9LE: |
| case PIX_FMT_GBRP9BE: |
| case PIX_FMT_GBRP10LE: |
| case PIX_FMT_GBRP10BE: |
| w_align = 16; //FIXME assume 16 pixel per macroblock |
| h_align = 16 * 2; // interlaced needs 2 macroblocks height |
| break; |
| case PIX_FMT_YUV411P: |
| case PIX_FMT_UYYVYY411: |
| w_align = 32; |
| h_align = 16 * 2; |
| 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; |
| } |
| if (s->codec_id == CODEC_ID_JV) { |
| w_align = 8; |
| h_align = 8; |
| } |
| 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; |
| } |
| |
| if(s->codec_id == CODEC_ID_IFF_ILBM || s->codec_id == CODEC_ID_IFF_BYTERUN1){ |
| w_align= FFMAX(w_align, 8); |
| } |
| |
| *width = FFALIGN(*width , w_align); |
| *height= FFALIGN(*height, h_align); |
| if(s->codec_id == CODEC_ID_H264 || s->lowres) |
| *height+=2; // some of the optimized chroma MC reads one line too much |
| // which is also done in mpeg decoders with lowres > 0 |
| |
| for (i = 0; i < AV_NUM_DATA_POINTERS; i++) |
| linesize_align[i] = 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 || s->codec_id == CODEC_ID_DIRAC) { |
| for (i = 0; i < AV_NUM_DATA_POINTERS; i++) |
| linesize_align[i] = 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[AV_NUM_DATA_POINTERS]; |
| 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); |
| } |
| |
| void ff_init_buffer_info(AVCodecContext *s, AVFrame *pic) |
| { |
| if (s->pkt) { |
| pic->pkt_pts = s->pkt->pts; |
| pic->pkt_pos = s->pkt->pos; |
| } else { |
| pic->pkt_pts = AV_NOPTS_VALUE; |
| pic->pkt_pos = -1; |
| } |
| pic->reordered_opaque= s->reordered_opaque; |
| pic->sample_aspect_ratio = s->sample_aspect_ratio; |
| pic->width = s->width; |
| pic->height = s->height; |
| pic->format = s->pix_fmt; |
| } |
| |
| int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels, |
| enum AVSampleFormat sample_fmt, const uint8_t *buf, |
| int buf_size, int align) |
| { |
| int ch, planar, needed_size, ret = 0; |
| |
| needed_size = av_samples_get_buffer_size(NULL, nb_channels, |
| frame->nb_samples, sample_fmt, |
| align); |
| if (buf_size < needed_size) |
| return AVERROR(EINVAL); |
| |
| planar = av_sample_fmt_is_planar(sample_fmt); |
| if (planar && nb_channels > AV_NUM_DATA_POINTERS) { |
| if (!(frame->extended_data = av_mallocz(nb_channels * |
| sizeof(*frame->extended_data)))) |
| return AVERROR(ENOMEM); |
| } else { |
| frame->extended_data = frame->data; |
| } |
| |
| if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0], |
| buf, nb_channels, frame->nb_samples, |
| sample_fmt, align)) < 0) { |
| if (frame->extended_data != frame->data) |
| av_freep(&frame->extended_data); |
| return ret; |
| } |
| if (frame->extended_data != frame->data) { |
| for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++) |
| frame->data[ch] = frame->extended_data[ch]; |
| } |
| |
| return ret; |
| } |
| |
| static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame) |
| { |
| AVCodecInternal *avci = avctx->internal; |
| InternalBuffer *buf; |
| int buf_size, ret; |
| |
| buf_size = av_samples_get_buffer_size(NULL, avctx->channels, |
| frame->nb_samples, avctx->sample_fmt, |
| 32); |
| if (buf_size < 0) |
| return AVERROR(EINVAL); |
| |
| /* allocate InternalBuffer if needed */ |
| if (!avci->buffer) { |
| avci->buffer = av_mallocz(sizeof(InternalBuffer)); |
| if (!avci->buffer) |
| return AVERROR(ENOMEM); |
| } |
| buf = avci->buffer; |
| |
| /* if there is a previously-used internal buffer, check its size and |
| channel count to see if we can reuse it */ |
| if (buf->extended_data) { |
| /* if current buffer is too small, free it */ |
| if (buf->extended_data[0] && buf_size > buf->audio_data_size) { |
| av_free(buf->extended_data[0]); |
| if (buf->extended_data != buf->data) |
| av_freep(&buf->extended_data); |
| buf->extended_data = NULL; |
| buf->data[0] = NULL; |
| } |
| /* if number of channels has changed, reset and/or free extended data |
| pointers but leave data buffer in buf->data[0] for reuse */ |
| if (buf->nb_channels != avctx->channels) { |
| if (buf->extended_data != buf->data) |
| av_free(buf->extended_data); |
| buf->extended_data = NULL; |
| } |
| } |
| |
| /* if there is no previous buffer or the previous buffer cannot be used |
| as-is, allocate a new buffer and/or rearrange the channel pointers */ |
| if (!buf->extended_data) { |
| if (!buf->data[0]) { |
| if (!(buf->data[0] = av_mallocz(buf_size))) |
| return AVERROR(ENOMEM); |
| buf->audio_data_size = buf_size; |
| } |
| if ((ret = avcodec_fill_audio_frame(frame, avctx->channels, |
| avctx->sample_fmt, buf->data[0], |
| buf->audio_data_size, 32))) |
| return ret; |
| |
| if (frame->extended_data == frame->data) |
| buf->extended_data = buf->data; |
| else |
| buf->extended_data = frame->extended_data; |
| memcpy(buf->data, frame->data, sizeof(frame->data)); |
| buf->linesize[0] = frame->linesize[0]; |
| buf->nb_channels = avctx->channels; |
| } else { |
| /* copy InternalBuffer info to the AVFrame */ |
| frame->extended_data = buf->extended_data; |
| frame->linesize[0] = buf->linesize[0]; |
| memcpy(frame->data, buf->data, sizeof(frame->data)); |
| } |
| |
| frame->type = FF_BUFFER_TYPE_INTERNAL; |
| |
| if (avctx->pkt) { |
| frame->pkt_pts = avctx->pkt->pts; |
| frame->pkt_pos = avctx->pkt->pos; |
| } else { |
| frame->pkt_pts = AV_NOPTS_VALUE; |
| frame->pkt_pos = -1; |
| } |
| |
| frame->reordered_opaque = avctx->reordered_opaque; |
| |
| if (avctx->debug & FF_DEBUG_BUFFERS) |
| av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p, " |
| "internal audio buffer used\n", frame); |
| |
| return 0; |
| } |
| |
| static int video_get_buffer(AVCodecContext *s, AVFrame *pic) |
| { |
| int i; |
| int w= s->width; |
| int h= s->height; |
| InternalBuffer *buf; |
| AVCodecInternal *avci = s->internal; |
| |
| if(pic->data[0]!=NULL) { |
| av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n"); |
| return -1; |
| } |
| if(avci->buffer_count >= INTERNAL_BUFFER_SIZE) { |
| av_log(s, AV_LOG_ERROR, "buffer_count overflow (missing release_buffer?)\n"); |
| return -1; |
| } |
| |
| if(av_image_check_size(w, h, 0, s)) |
| return -1; |
| |
| if (!avci->buffer) { |
| avci->buffer = av_mallocz((INTERNAL_BUFFER_SIZE+1) * |
| sizeof(InternalBuffer)); |
| } |
| |
| buf = &avci->buffer[avci->buffer_count]; |
| |
| if(buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)){ |
| if(s->active_thread_type&FF_THREAD_FRAME) { |
| av_log_missing_feature(s, "Width/height changing with frame threads is", 0); |
| return -1; |
| } |
| |
| for (i = 0; i < AV_NUM_DATA_POINTERS; i++) { |
| av_freep(&buf->base[i]); |
| buf->data[i]= NULL; |
| } |
| } |
| |
| if (!buf->base[0]) { |
| int h_chroma_shift, v_chroma_shift; |
| int size[4] = {0}; |
| int tmpsize; |
| int unaligned; |
| AVPicture picture; |
| int stride_align[AV_NUM_DATA_POINTERS]; |
| const int pixel_size = av_pix_fmt_descriptors[s->pix_fmt].comp[0].step_minus1+1; |
| |
| 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 |
| av_image_fill_linesizes(picture.linesize, 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 = av_image_fill_pointers(picture.data, s->pix_fmt, h, NULL, picture.linesize); |
| 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]); |
| |
| 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) + (pixel_size*EDGE_WIDTH>>h_shift), stride_align[i]); |
| } |
| for (; i < AV_NUM_DATA_POINTERS; i++) { |
| buf->base[i] = buf->data[i] = NULL; |
| buf->linesize[i] = 0; |
| } |
| if(size[1] && !size[2]) |
| ff_set_systematic_pal2((uint32_t*)buf->data[1], s->pix_fmt); |
| buf->width = s->width; |
| buf->height = s->height; |
| buf->pix_fmt= s->pix_fmt; |
| } |
| pic->type= FF_BUFFER_TYPE_INTERNAL; |
| |
| for (i = 0; i < AV_NUM_DATA_POINTERS; i++) { |
| pic->base[i]= buf->base[i]; |
| pic->data[i]= buf->data[i]; |
| pic->linesize[i]= buf->linesize[i]; |
| } |
| pic->extended_data = pic->data; |
| avci->buffer_count++; |
| |
| if (s->pkt) { |
| pic->pkt_pts = s->pkt->pts; |
| pic->pkt_pos = s->pkt->pos; |
| } else { |
| pic->pkt_pts = AV_NOPTS_VALUE; |
| pic->pkt_pos = -1; |
| } |
| pic->reordered_opaque= s->reordered_opaque; |
| pic->sample_aspect_ratio = s->sample_aspect_ratio; |
| pic->width = s->width; |
| pic->height = s->height; |
| pic->format = s->pix_fmt; |
| |
| if(s->debug&FF_DEBUG_BUFFERS) |
| av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d " |
| "buffers used\n", pic, avci->buffer_count); |
| |
| return 0; |
| } |
| |
| int avcodec_default_get_buffer(AVCodecContext *avctx, AVFrame *frame) |
| { |
| switch (avctx->codec_type) { |
| case AVMEDIA_TYPE_VIDEO: |
| return video_get_buffer(avctx, frame); |
| case AVMEDIA_TYPE_AUDIO: |
| return audio_get_buffer(avctx, frame); |
| default: |
| return -1; |
| } |
| } |
| |
| void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){ |
| int i; |
| InternalBuffer *buf, *last; |
| AVCodecInternal *avci = s->internal; |
| |
| assert(s->codec_type == AVMEDIA_TYPE_VIDEO); |
| |
| assert(pic->type==FF_BUFFER_TYPE_INTERNAL); |
| assert(avci->buffer_count); |
| |
| if (avci->buffer) { |
| buf = NULL; /* avoids warning */ |
| for (i = 0; i < avci->buffer_count; i++) { //just 3-5 checks so is not worth to optimize |
| buf = &avci->buffer[i]; |
| if (buf->data[0] == pic->data[0]) |
| break; |
| } |
| assert(i < avci->buffer_count); |
| avci->buffer_count--; |
| last = &avci->buffer[avci->buffer_count]; |
| |
| if (buf != last) |
| FFSWAP(InternalBuffer, *buf, *last); |
| } |
| |
| for (i = 0; i < AV_NUM_DATA_POINTERS; 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, avci->buffer_count); |
| } |
| |
| int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){ |
| AVFrame temp_pic; |
| int i; |
| |
| assert(s->codec_type == AVMEDIA_TYPE_VIDEO); |
| |
| if (pic->data[0] && (pic->width != s->width || pic->height != s->height || pic->format != s->pix_fmt)) { |
| av_log(s, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n", |
| pic->width, pic->height, av_get_pix_fmt_name(pic->format), s->width, s->height, av_get_pix_fmt_name(s->pix_fmt)); |
| s->release_buffer(s, pic); |
| } |
| |
| ff_init_buffer_info(s, pic); |
| |
| /* 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 ff_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 < AV_NUM_DATA_POINTERS; i++) |
| pic->data[i] = pic->base[i] = NULL; |
| pic->opaque = NULL; |
| /* Allocate new frame */ |
| if (ff_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 = pic->pkt_dts = pic->pkt_pts = pic->best_effort_timestamp = AV_NOPTS_VALUE; |
| pic->pkt_pos = -1; |
| pic->key_frame= 1; |
| pic->sample_aspect_ratio = (AVRational){0, 1}; |
| pic->format = -1; /* unknown */ |
| } |
| |
| AVFrame *avcodec_alloc_frame(void){ |
| AVFrame *pic= av_malloc(sizeof(AVFrame)); |
| |
| if(pic==NULL) return NULL; |
| |
| avcodec_get_frame_defaults(pic); |
| |
| return pic; |
| } |
| |
| static void avcodec_get_subtitle_defaults(AVSubtitle *sub) |
| { |
| memset(sub, 0, sizeof(*sub)); |
| sub->pts = AV_NOPTS_VALUE; |
| } |
| |
| #if FF_API_AVCODEC_OPEN |
| int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec) |
| { |
| return avcodec_open2(avctx, codec, NULL); |
| } |
| #endif |
| |
| int attribute_align_arg avcodec_open2(AVCodecContext *avctx, AVCodec *codec, AVDictionary **options) |
| { |
| int ret = 0; |
| AVDictionary *tmp = NULL; |
| |
| if (avcodec_is_open(avctx)) |
| return 0; |
| |
| if ((!codec && !avctx->codec)) { |
| av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2().\n"); |
| return AVERROR(EINVAL); |
| } |
| if ((codec && avctx->codec && codec != avctx->codec)) { |
| av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, " |
| "but %s passed to avcodec_open2().\n", avctx->codec->name, codec->name); |
| return AVERROR(EINVAL); |
| } |
| if (!codec) |
| codec = avctx->codec; |
| |
| if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE) |
| return AVERROR(EINVAL); |
| |
| if (options) |
| av_dict_copy(&tmp, *options, 0); |
| |
| /* 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"); |
| ret = -1; |
| goto end; |
| } |
| |
| avctx->internal = av_mallocz(sizeof(AVCodecInternal)); |
| if (!avctx->internal) { |
| ret = AVERROR(ENOMEM); |
| goto end; |
| } |
| |
| if (codec->priv_data_size > 0) { |
| if(!avctx->priv_data){ |
| avctx->priv_data = av_mallocz(codec->priv_data_size); |
| if (!avctx->priv_data) { |
| ret = AVERROR(ENOMEM); |
| goto end; |
| } |
| if (codec->priv_class) { |
| *(AVClass**)avctx->priv_data= codec->priv_class; |
| av_opt_set_defaults(avctx->priv_data); |
| } |
| } |
| if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0) |
| goto free_and_end; |
| } else { |
| avctx->priv_data = NULL; |
| } |
| if ((ret = av_opt_set_dict(avctx, &tmp)) < 0) |
| goto free_and_end; |
| |
| if (codec->capabilities & CODEC_CAP_EXPERIMENTAL) |
| if (avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) { |
| av_log(avctx, AV_LOG_ERROR, "Codec is experimental but experimental codecs are not enabled, see -strict -2\n"); |
| ret = -1; |
| goto free_and_end; |
| } |
| |
| //We only call avcodec_set_dimensions() for non h264 codecs so as not to overwrite previously setup dimensions |
| if(!( avctx->coded_width && avctx->coded_height && avctx->width && avctx->height && avctx->codec_id == CODEC_ID_H264)){ |
| 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 || avctx->width || avctx->height) |
| && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0 |
| || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) { |
| av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n"); |
| avcodec_set_dimensions(avctx, 0, 0); |
| } |
| |
| /* if the decoder init function was already called previously, |
| free the already allocated subtitle_header before overwriting it */ |
| if (codec_is_decoder(codec)) |
| av_freep(&avctx->subtitle_header); |
| |
| #define SANE_NB_CHANNELS 128U |
| if (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 |
| && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) { |
| av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n"); |
| ret = AVERROR(EINVAL); |
| goto free_and_end; |
| } |
| avctx->frame_number = 0; |
| #if FF_API_ER |
| |
| av_log(avctx, AV_LOG_DEBUG, "err{or,}_recognition separate: %d; %X\n", |
| avctx->error_recognition, avctx->err_recognition); |
| switch(avctx->error_recognition){ |
| case FF_ER_EXPLODE : avctx->err_recognition |= AV_EF_EXPLODE | AV_EF_COMPLIANT | AV_EF_CAREFUL; |
| break; |
| case FF_ER_VERY_AGGRESSIVE: |
| case FF_ER_AGGRESSIVE : avctx->err_recognition |= AV_EF_AGGRESSIVE; |
| case FF_ER_COMPLIANT : avctx->err_recognition |= AV_EF_COMPLIANT; |
| case FF_ER_CAREFUL : avctx->err_recognition |= AV_EF_CAREFUL; |
| } |
| |
| av_log(avctx, AV_LOG_DEBUG, "err{or,}_recognition combined: %d; %X\n", |
| avctx->error_recognition, avctx->err_recognition); |
| #endif |
| |
| if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && |
| (!avctx->time_base.num || !avctx->time_base.den)) { |
| avctx->time_base.num = 1; |
| avctx->time_base.den = avctx->sample_rate; |
| } |
| |
| if (!HAVE_THREADS) |
| av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n"); |
| |
| if (HAVE_THREADS && !avctx->thread_opaque) { |
| ret = ff_thread_init(avctx); |
| if (ret < 0) { |
| goto free_and_end; |
| } |
| } |
| if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS)) |
| avctx->thread_count = 1; |
| |
| if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) { |
| av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n", |
| avctx->codec->max_lowres); |
| ret = AVERROR(EINVAL); |
| goto free_and_end; |
| } |
| if (codec_is_encoder(avctx->codec)) { |
| int i; |
| if (avctx->codec->sample_fmts) { |
| for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) |
| if (avctx->sample_fmt == avctx->codec->sample_fmts[i]) |
| break; |
| if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) { |
| av_log(avctx, AV_LOG_ERROR, "Specified sample_fmt is not supported.\n"); |
| ret = AVERROR(EINVAL); |
| goto free_and_end; |
| } |
| } |
| if (avctx->codec->supported_samplerates) { |
| for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++) |
| if (avctx->sample_rate == avctx->codec->supported_samplerates[i]) |
| break; |
| if (avctx->codec->supported_samplerates[i] == 0) { |
| av_log(avctx, AV_LOG_ERROR, "Specified sample_rate is not supported\n"); |
| ret = AVERROR(EINVAL); |
| goto free_and_end; |
| } |
| } |
| if (avctx->codec->channel_layouts) { |
| if (!avctx->channel_layout) { |
| av_log(avctx, AV_LOG_WARNING, "channel_layout not specified\n"); |
| } else { |
| for (i = 0; avctx->codec->channel_layouts[i] != 0; i++) |
| if (avctx->channel_layout == avctx->codec->channel_layouts[i]) |
| break; |
| if (avctx->codec->channel_layouts[i] == 0) { |
| av_log(avctx, AV_LOG_ERROR, "Specified channel_layout is not supported\n"); |
| ret = AVERROR(EINVAL); |
| goto free_and_end; |
| } |
| } |
| } |
| if (avctx->channel_layout && avctx->channels) { |
| if (av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels) { |
| av_log(avctx, AV_LOG_ERROR, "channel layout does not match number of channels\n"); |
| ret = AVERROR(EINVAL); |
| goto free_and_end; |
| } |
| } else if (avctx->channel_layout) { |
| avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout); |
| } |
| |
| if (!avctx->rc_initial_buffer_occupancy) |
| avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4; |
| } |
| |
| avctx->pts_correction_num_faulty_pts = |
| avctx->pts_correction_num_faulty_dts = 0; |
| avctx->pts_correction_last_pts = |
| avctx->pts_correction_last_dts = INT64_MIN; |
| |
| if(avctx->codec->init && !(avctx->active_thread_type&FF_THREAD_FRAME)){ |
| 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); |
| } |
| if (options) { |
| av_dict_free(options); |
| *options = tmp; |
| } |
| |
| return ret; |
| free_and_end: |
| av_dict_free(&tmp); |
| av_freep(&avctx->priv_data); |
| av_freep(&avctx->internal); |
| avctx->codec= NULL; |
| goto end; |
| } |
| |
| int ff_alloc_packet(AVPacket *avpkt, int size) |
| { |
| if (size > INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE) |
| return AVERROR(EINVAL); |
| |
| if (avpkt->data) { |
| uint8_t *pkt_data; |
| int pkt_size; |
| |
| if (avpkt->size < size) |
| return AVERROR(EINVAL); |
| |
| pkt_data = avpkt->data; |
| pkt_size = avpkt->size; |
| av_init_packet(avpkt); |
| avpkt->data = pkt_data; |
| avpkt->size = pkt_size; |
| return 0; |
| } else { |
| return av_new_packet(avpkt, size); |
| } |
| } |
| |
| int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx, |
| AVPacket *avpkt, |
| const AVFrame *frame, |
| int *got_packet_ptr) |
| { |
| int ret; |
| int user_packet = !!avpkt->data; |
| int nb_samples; |
| |
| if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) { |
| av_init_packet(avpkt); |
| avpkt->size = 0; |
| return 0; |
| } |
| |
| /* check for valid frame size */ |
| if (frame) { |
| nb_samples = frame->nb_samples; |
| if (avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) { |
| if (nb_samples > avctx->frame_size) |
| return AVERROR(EINVAL); |
| } else if (!(avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) { |
| if (nb_samples != avctx->frame_size) |
| return AVERROR(EINVAL); |
| } |
| } else { |
| nb_samples = avctx->frame_size; |
| } |
| |
| if (avctx->codec->encode2) { |
| *got_packet_ptr = 0; |
| ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr); |
| if (!ret && *got_packet_ptr && |
| !(avctx->codec->capabilities & CODEC_CAP_DELAY)) { |
| avpkt->pts = frame->pts; |
| avpkt->duration = av_rescale_q(frame->nb_samples, |
| (AVRational){ 1, avctx->sample_rate }, |
| avctx->time_base); |
| } |
| } else { |
| /* for compatibility with encoders not supporting encode2(), we need to |
| allocate a packet buffer if the user has not provided one or check |
| the size otherwise */ |
| int fs_tmp = 0; |
| int buf_size = avpkt->size; |
| if (!user_packet) { |
| if (avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE) { |
| av_assert0(av_get_bits_per_sample(avctx->codec_id) != 0); |
| if (!frame) |
| return AVERROR(EINVAL); |
| buf_size = nb_samples * avctx->channels * |
| av_get_bits_per_sample(avctx->codec_id) / 8; |
| } else { |
| /* this is a guess as to the required size. |
| if an encoder needs more than this, it should probably |
| implement encode2() */ |
| buf_size = 2 * avctx->frame_size * avctx->channels * |
| av_get_bytes_per_sample(avctx->sample_fmt); |
| buf_size += FF_MIN_BUFFER_SIZE; |
| } |
| } |
| if ((ret = ff_alloc_packet(avpkt, buf_size))) |
| return ret; |
| |
| /* Encoders using AVCodec.encode() that support |
| CODEC_CAP_SMALL_LAST_FRAME require avctx->frame_size to be set to |
| the smaller size when encoding the last frame. |
| This code can be removed once all encoders supporting |
| CODEC_CAP_SMALL_LAST_FRAME use encode2() */ |
| if ((avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) && |
| nb_samples < avctx->frame_size) { |
| fs_tmp = avctx->frame_size; |
| avctx->frame_size = nb_samples; |
| } |
| |
| /* encode the frame */ |
| ret = avctx->codec->encode(avctx, avpkt->data, avpkt->size, |
| frame ? frame->data[0] : NULL); |
| if (ret >= 0) { |
| if (!ret) { |
| /* no output. if the packet data was allocated by libavcodec, |
| free it */ |
| if (!user_packet) |
| av_freep(&avpkt->data); |
| } else { |
| if (avctx->coded_frame) |
| avpkt->pts = avctx->coded_frame->pts; |
| /* Set duration for final small packet. This can be removed |
| once all encoders supporting CODEC_CAP_SMALL_LAST_FRAME use |
| encode2() */ |
| if (fs_tmp) { |
| avpkt->duration = av_rescale_q(avctx->frame_size, |
| (AVRational){ 1, avctx->sample_rate }, |
| avctx->time_base); |
| } |
| } |
| avpkt->size = ret; |
| *got_packet_ptr = (ret > 0); |
| ret = 0; |
| } |
| |
| if (fs_tmp) |
| avctx->frame_size = fs_tmp; |
| } |
| if (!ret) |
| avctx->frame_number++; |
| |
| /* NOTE: if we add any audio encoders which output non-keyframe packets, |
| this needs to be moved to the encoders, but for now we can do it |
| here to simplify things */ |
| avpkt->flags |= AV_PKT_FLAG_KEY; |
| |
| return ret; |
| } |
| |
| #if FF_API_OLD_DECODE_AUDIO |
| int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx, |
| uint8_t *buf, int buf_size, |
| const short *samples) |
| { |
| AVPacket pkt; |
| AVFrame frame0; |
| AVFrame *frame; |
| int ret, samples_size, got_packet; |
| |
| av_init_packet(&pkt); |
| pkt.data = buf; |
| pkt.size = buf_size; |
| |
| if (samples) { |
| frame = &frame0; |
| avcodec_get_frame_defaults(frame); |
| |
| if (avctx->frame_size) { |
| frame->nb_samples = avctx->frame_size; |
| } else { |
| /* if frame_size is not set, the number of samples must be |
| calculated from the buffer size */ |
| int64_t nb_samples; |
| if (!av_get_bits_per_sample(avctx->codec_id)) { |
| av_log(avctx, AV_LOG_ERROR, "avcodec_encode_audio() does not " |
| "support this codec\n"); |
| return AVERROR(EINVAL); |
| } |
| nb_samples = (int64_t)buf_size * 8 / |
| (av_get_bits_per_sample(avctx->codec_id) * |
| avctx->channels); |
| if (nb_samples >= INT_MAX) |
| return AVERROR(EINVAL); |
| frame->nb_samples = nb_samples; |
| } |
| |
| /* it is assumed that the samples buffer is large enough based on the |
| relevant parameters */ |
| samples_size = av_samples_get_buffer_size(NULL, avctx->channels, |
| frame->nb_samples, |
| avctx->sample_fmt, 1); |
| if ((ret = avcodec_fill_audio_frame(frame, avctx->channels, |
| avctx->sample_fmt, |
| samples, samples_size, 1))) |
| return ret; |
| |
| /* fabricate frame pts from sample count. |
| this is needed because the avcodec_encode_audio() API does not have |
| a way for the user to provide pts */ |
| if(avctx->sample_rate && avctx->time_base.num) |
| frame->pts = av_rescale_q(avctx->internal->sample_count, |
| (AVRational){ 1, avctx->sample_rate }, |
| avctx->time_base); |
| else |
| frame->pts = AV_NOPTS_VALUE; |
| avctx->internal->sample_count += frame->nb_samples; |
| } else { |
| frame = NULL; |
| } |
| |
| got_packet = 0; |
| ret = avcodec_encode_audio2(avctx, &pkt, frame, &got_packet); |
| if (!ret && got_packet && avctx->coded_frame) { |
| avctx->coded_frame->pts = pkt.pts; |
| avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY); |
| } |
| /* free any side data since we cannot return it */ |
| ff_packet_free_side_data(&pkt); |
| |
| if (frame && frame->extended_data != frame->data) |
| av_freep(&frame->extended_data); |
| |
| return ret ? ret : pkt.size; |
| } |
| #endif |
| |
| 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(av_image_check_size(avctx->width, avctx->height, 0, avctx)) |
| 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; |
| } |
| |
| ret = avctx->codec->encode(avctx, buf, buf_size, sub); |
| avctx->frame_number++; |
| return ret; |
| } |
| |
| /** |
| * Attempt to guess proper monotonic timestamps for decoded video frames |
| * which might have incorrect times. Input timestamps may wrap around, in |
| * which case the output will as well. |
| * |
| * @param pts the pts field of the decoded AVPacket, as passed through |
| * AVFrame.pkt_pts |
| * @param dts the dts field of the decoded AVPacket |
| * @return one of the input values, may be AV_NOPTS_VALUE |
| */ |
| static int64_t guess_correct_pts(AVCodecContext *ctx, |
| int64_t reordered_pts, int64_t dts) |
| { |
| int64_t pts = AV_NOPTS_VALUE; |
| |
| if (dts != AV_NOPTS_VALUE) { |
| ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts; |
| ctx->pts_correction_last_dts = dts; |
| } |
| if (reordered_pts != AV_NOPTS_VALUE) { |
| ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts; |
| ctx->pts_correction_last_pts = reordered_pts; |
| } |
| if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE) |
| && reordered_pts != AV_NOPTS_VALUE) |
| pts = reordered_pts; |
| else |
| pts = dts; |
| |
| return pts; |
| } |
| |
| static void apply_param_change(AVCodecContext *avctx, AVPacket *avpkt) |
| { |
| int size = 0; |
| const uint8_t *data; |
| uint32_t flags; |
| |
| if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE)) |
| return; |
| |
| data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size); |
| if (!data || size < 4) |
| return; |
| flags = bytestream_get_le32(&data); |
| size -= 4; |
| if (size < 4) /* Required for any of the changes */ |
| return; |
| if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) { |
| avctx->channels = bytestream_get_le32(&data); |
| size -= 4; |
| } |
| if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) { |
| if (size < 8) |
| return; |
| avctx->channel_layout = bytestream_get_le64(&data); |
| size -= 8; |
| } |
| if (size < 4) |
| return; |
| if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) { |
| avctx->sample_rate = bytestream_get_le32(&data); |
| size -= 4; |
| } |
| if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) { |
| if (size < 8) |
| return; |
| avctx->width = bytestream_get_le32(&data); |
| avctx->height = bytestream_get_le32(&data); |
| avcodec_set_dimensions(avctx, avctx->width, avctx->height); |
| size -= 8; |
| } |
| } |
| |
| int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture, |
| int *got_picture_ptr, |
| const AVPacket *avpkt) |
| { |
| int ret; |
| // copy to ensure we do not change avpkt |
| AVPacket tmp = *avpkt; |
| |
| *got_picture_ptr= 0; |
| if((avctx->coded_width||avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx)) |
| return -1; |
| |
| if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type&FF_THREAD_FRAME)){ |
| int did_split = av_packet_split_side_data(&tmp); |
| apply_param_change(avctx, &tmp); |
| avctx->pkt = &tmp; |
| if (HAVE_THREADS && avctx->active_thread_type&FF_THREAD_FRAME) |
| ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr, |
| &tmp); |
| else { |
| ret = avctx->codec->decode(avctx, picture, got_picture_ptr, |
| &tmp); |
| picture->pkt_dts= avpkt->dts; |
| |
| if(!avctx->has_b_frames){ |
| picture->pkt_pos= avpkt->pos; |
| } |
| //FIXME these should be under if(!avctx->has_b_frames) |
| if (!picture->sample_aspect_ratio.num) |
| picture->sample_aspect_ratio = avctx->sample_aspect_ratio; |
| if (!picture->width) |
| picture->width = avctx->width; |
| if (!picture->height) |
| picture->height = avctx->height; |
| if (picture->format == PIX_FMT_NONE) |
| picture->format = avctx->pix_fmt; |
| } |
| |
| emms_c(); //needed to avoid an emms_c() call before every return; |
| |
| avctx->pkt = NULL; |
| if (did_split) |
| ff_packet_free_side_data(&tmp); |
| |
| if (*got_picture_ptr){ |
| avctx->frame_number++; |
| picture->best_effort_timestamp = guess_correct_pts(avctx, |
| picture->pkt_pts, |
| picture->pkt_dts); |
| } |
| }else |
| ret= 0; |
| |
| return ret; |
| } |
| |
| #if FF_API_OLD_DECODE_AUDIO |
| int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples, |
| int *frame_size_ptr, |
| AVPacket *avpkt) |
| { |
| AVFrame frame; |
| int ret, got_frame = 0; |
| |
| if (avctx->get_buffer != avcodec_default_get_buffer) { |
| av_log(avctx, AV_LOG_ERROR, "Custom get_buffer() for use with" |
| "avcodec_decode_audio3() detected. Overriding with avcodec_default_get_buffer\n"); |
| av_log(avctx, AV_LOG_ERROR, "Please port your application to " |
| "avcodec_decode_audio4()\n"); |
| avctx->get_buffer = avcodec_default_get_buffer; |
| avctx->release_buffer = avcodec_default_release_buffer; |
| } |
| |
| ret = avcodec_decode_audio4(avctx, &frame, &got_frame, avpkt); |
| |
| if (ret >= 0 && got_frame) { |
| int ch, plane_size; |
| int planar = av_sample_fmt_is_planar(avctx->sample_fmt); |
| int data_size = av_samples_get_buffer_size(&plane_size, avctx->channels, |
| frame.nb_samples, |
| avctx->sample_fmt, 1); |
| if (*frame_size_ptr < data_size) { |
| av_log(avctx, AV_LOG_ERROR, "output buffer size is too small for " |
| "the current frame (%d < %d)\n", *frame_size_ptr, data_size); |
| return AVERROR(EINVAL); |
| } |
| |
| memcpy(samples, frame.extended_data[0], plane_size); |
| |
| if (planar && avctx->channels > 1) { |
| uint8_t *out = ((uint8_t *)samples) + plane_size; |
| for (ch = 1; ch < avctx->channels; ch++) { |
| memcpy(out, frame.extended_data[ch], plane_size); |
| out += plane_size; |
| } |
| } |
| *frame_size_ptr = data_size; |
| } else { |
| *frame_size_ptr = 0; |
| } |
| return ret; |
| } |
| #endif |
| |
| int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx, |
| AVFrame *frame, |
| int *got_frame_ptr, |
| AVPacket *avpkt) |
| { |
| int ret = 0; |
| |
| *got_frame_ptr = 0; |
| |
| if (!avpkt->data && avpkt->size) { |
| av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n"); |
| return AVERROR(EINVAL); |
| } |
| |
| if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size) { |
| av_packet_split_side_data(avpkt); |
| apply_param_change(avctx, avpkt); |
| |
| avctx->pkt = avpkt; |
| ret = avctx->codec->decode(avctx, frame, got_frame_ptr, avpkt); |
| if (ret >= 0 && *got_frame_ptr) { |
| avctx->frame_number++; |
| frame->pkt_dts = avpkt->dts; |
| if (frame->format == AV_SAMPLE_FMT_NONE) |
| frame->format = avctx->sample_fmt; |
| } |
| } |
| return ret; |
| } |
| |
| int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub, |
| int *got_sub_ptr, |
| AVPacket *avpkt) |
| { |
| int ret; |
| |
| avctx->pkt = avpkt; |
| *got_sub_ptr = 0; |
| avcodec_get_subtitle_defaults(sub); |
| ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt); |
| if (*got_sub_ptr) |
| avctx->frame_number++; |
| return ret; |
| } |
| |
| void avsubtitle_free(AVSubtitle *sub) |
| { |
| int i; |
| |
| for (i = 0; i < sub->num_rects; i++) |
| { |
| av_freep(&sub->rects[i]->pict.data[0]); |
| av_freep(&sub->rects[i]->pict.data[1]); |
| av_freep(&sub->rects[i]->pict.data[2]); |
| av_freep(&sub->rects[i]->pict.data[3]); |
| av_freep(&sub->rects[i]->text); |
| av_freep(&sub->rects[i]->ass); |
| av_freep(&sub->rects[i]); |
| } |
| |
| av_freep(&sub->rects); |
| |
| memset(sub, 0, sizeof(AVSubtitle)); |
| } |
| |
| 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 (avcodec_is_open(avctx)) { |
| if (HAVE_THREADS && avctx->thread_opaque) |
| ff_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->internal); |
| } |
| |
| if (avctx->priv_data && avctx->codec && avctx->codec->priv_class) |
| av_opt_free(avctx->priv_data); |
| av_opt_free(avctx); |
| av_freep(&avctx->priv_data); |
| if (codec_is_encoder(avctx->codec)) |
| av_freep(&avctx->extradata); |
| avctx->codec = NULL; |
| avctx->active_thread_type = 0; |
| entangled_thread_counter--; |
| |
| /* Release any user-supplied mutex. */ |
| if (ff_lockmgr_cb) { |
| (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE); |
| } |
| return 0; |
| } |
| |
| static enum CodecID remap_deprecated_codec_id(enum CodecID id) |
| { |
| switch(id){ |
| case CODEC_ID_G723_1_DEPRECATED : return CODEC_ID_G723_1; |
| case CODEC_ID_G729_DEPRECATED : return CODEC_ID_G729; |
| case CODEC_ID_UTVIDEO_DEPRECATED: return CODEC_ID_UTVIDEO; |
| default : return id; |
| } |
| } |
| |
| AVCodec *avcodec_find_encoder(enum CodecID id) |
| { |
| AVCodec *p, *experimental=NULL; |
| p = first_avcodec; |
| id= remap_deprecated_codec_id(id); |
| while (p) { |
| if (codec_is_encoder(p) && 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 (codec_is_encoder(p) && strcmp(name,p->name) == 0) |
| return p; |
| p = p->next; |
| } |
| return NULL; |
| } |
| |
| AVCodec *avcodec_find_decoder(enum CodecID id) |
| { |
| AVCodec *p, *experimental=NULL; |
| p = first_avcodec; |
| id= remap_deprecated_codec_id(id); |
| while (p) { |
| if (codec_is_decoder(p) && p->id == id) { |
| if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) { |
| experimental = p; |
| } else |
| return p; |
| } |
| p = p->next; |
| } |
| return experimental; |
| } |
| |
| AVCodec *avcodec_find_decoder_by_name(const char *name) |
| { |
| AVCodec *p; |
| if (!name) |
| return NULL; |
| p = first_avcodec; |
| while (p) { |
| if (codec_is_decoder(p) && 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; |
| } |
| |
| const char *avcodec_get_name(enum CodecID id) |
| { |
| AVCodec *codec; |
| |
| #if !CONFIG_SMALL |
| switch (id) { |
| #include "libavcodec/codec_names.h" |
| } |
| av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id); |
| #endif |
| codec = avcodec_find_decoder(id); |
| if (codec) |
| return codec->name; |
| codec = avcodec_find_encoder(id); |
| if (codec) |
| return codec->name; |
| return "unknown_codec"; |
| } |
| |
| size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag) |
| { |
| int i, len, ret = 0; |
| |
| for (i = 0; i < 4; i++) { |
| len = snprintf(buf, buf_size, |
| isprint(codec_tag&0xFF) ? "%c" : "[%d]", codec_tag&0xFF); |
| buf += len; |
| buf_size = buf_size > len ? buf_size - len : 0; |
| ret += len; |
| codec_tag>>=8; |
| } |
| return ret; |
| } |
| |
| void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode) |
| { |
| const char *codec_type; |
| const char *codec_name; |
| const char *profile = NULL; |
| AVCodec *p; |
| int bitrate; |
| AVRational display_aspect_ratio; |
| |
| if (!buf || buf_size <= 0) |
| return; |
| codec_type = av_get_media_type_string(enc->codec_type); |
| codec_name = avcodec_get_name(enc->codec_id); |
| if (enc->profile != FF_PROFILE_UNKNOWN) { |
| p = encode ? avcodec_find_encoder(enc->codec_id) : |
| avcodec_find_decoder(enc->codec_id); |
| if (p) |
| profile = av_get_profile_name(p, enc->profile); |
| } |
| |
| snprintf(buf, buf_size, "%s: %s%s", codec_type ? codec_type : "unknown", |
| codec_name, enc->mb_decision ? " (hq)" : ""); |
| buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */ |
| if (profile) |
| snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile); |
| if (enc->codec_tag) { |
| char tag_buf[32]; |
| av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag); |
| snprintf(buf + strlen(buf), buf_size - strlen(buf), |
| " (%s / 0x%04X)", tag_buf, enc->codec_tag); |
| } |
| switch(enc->codec_type) { |
| case AVMEDIA_TYPE_VIDEO: |
| if (enc->pix_fmt != PIX_FMT_NONE) { |
| snprintf(buf + strlen(buf), buf_size - strlen(buf), |
| ", %s", |
| av_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), |
| " [SAR %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: |
| if (enc->sample_rate) { |
| snprintf(buf + strlen(buf), buf_size - strlen(buf), |
| ", %d Hz", enc->sample_rate); |
| } |
| av_strlcat(buf, ", ", buf_size); |
| av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout); |
| if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) { |
| snprintf(buf + strlen(buf), buf_size - strlen(buf), |
| ", %s", av_get_sample_fmt_name(enc->sample_fmt)); |
| } |
| break; |
| default: |
| 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); |
| } |
| } |
| |
| const char *av_get_profile_name(const AVCodec *codec, int profile) |
| { |
| const AVProfile *p; |
| if (profile == FF_PROFILE_UNKNOWN || !codec->profiles) |
| return NULL; |
| |
| for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++) |
| if (p->profile == profile) |
| return p->name; |
| |
| return NULL; |
| } |
| |
| unsigned avcodec_version( void ) |
| { |
| av_assert0(CODEC_ID_V410==164); |
| av_assert0(CODEC_ID_PCM_S8_PLANAR==65563); |
| av_assert0(CODEC_ID_ADPCM_G722==69660); |
| av_assert0(CODEC_ID_BMV_AUDIO==86071); |
| av_assert0(CODEC_ID_SRT==94216); |
| av_assert0(LIBAVCODEC_VERSION_MICRO >= 100); |
| |
| 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_flush_buffers(AVCodecContext *avctx) |
| { |
| if(HAVE_THREADS && avctx->active_thread_type&FF_THREAD_FRAME) |
| ff_thread_flush(avctx); |
| else if(avctx->codec->flush) |
| avctx->codec->flush(avctx); |
| } |
| |
| static void video_free_buffers(AVCodecContext *s) |
| { |
| AVCodecInternal *avci = s->internal; |
| int i, j; |
| |
| if (!avci->buffer) |
| return; |
| |
| if (avci->buffer_count) |
| av_log(s, AV_LOG_WARNING, "Found %i unreleased buffers!\n", |
| avci->buffer_count); |
| for(i=0; i<INTERNAL_BUFFER_SIZE; i++){ |
| InternalBuffer *buf = &avci->buffer[i]; |
| for(j=0; j<4; j++){ |
| av_freep(&buf->base[j]); |
| buf->data[j]= NULL; |
| } |
| } |
| av_freep(&avci->buffer); |
| |
| avci->buffer_count=0; |
| } |
| |
| static void audio_free_buffers(AVCodecContext *avctx) |
| { |
| AVCodecInternal *avci = avctx->internal; |
| InternalBuffer *buf; |
| |
| if (!avci->buffer) |
| return; |
| buf = avci->buffer; |
| |
| if (buf->extended_data) { |
| av_free(buf->extended_data[0]); |
| if (buf->extended_data != buf->data) |
| av_freep(&buf->extended_data); |
| } |
| av_freep(&avci->buffer); |
| } |
| |
| void avcodec_default_free_buffers(AVCodecContext *avctx) |
| { |
| switch (avctx->codec_type) { |
| case AVMEDIA_TYPE_VIDEO: |
| video_free_buffers(avctx); |
| break; |
| case AVMEDIA_TYPE_AUDIO: |
| audio_free_buffers(avctx); |
| break; |
| default: |
| break; |
| } |
| } |
| |
| #if FF_API_OLD_FF_PICT_TYPES |
| char av_get_pict_type_char(int pict_type){ |
| return av_get_picture_type_char(pict_type); |
| } |
| #endif |
| |
| 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_APC: |
| case CODEC_ID_ADPCM_IMA_WAV: |
| case CODEC_ID_ADPCM_IMA_QT: |
| case CODEC_ID_ADPCM_SWF: |
| case CODEC_ID_ADPCM_MS: |
| case CODEC_ID_ADPCM_YAMAHA: |
| case CODEC_ID_ADPCM_G722: |
| 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; |
| } |
| } |
| |
| #if FF_API_OLD_SAMPLE_FMT |
| int av_get_bits_per_sample_format(enum AVSampleFormat sample_fmt) { |
| return av_get_bytes_per_sample(sample_fmt) << 3; |
| } |
| #endif |
| |
| #if !HAVE_THREADS |
| int ff_thread_init(AVCodecContext *s){ |
| 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; |
| } |
| |
| 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 Git. If the problem still " |
| "occurs, it means that your file has a feature which has not " |
| "been implemented.\n", feature); |
| if(want_sample) |
| av_log_ask_for_sample(avc, NULL); |
| } |
| |
| void av_log_ask_for_sample(void *avc, const char *msg, ...) |
| { |
| va_list argument_list; |
| |
| va_start(argument_list, msg); |
| |
| if (msg) |
| av_vlog(avc, AV_LOG_WARNING, msg, argument_list); |
| 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"); |
| |
| va_end(argument_list); |
| } |
| |
| 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; |
| if (ff_lockmgr_cb(&avformat_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; |
| if (ff_lockmgr_cb(&avformat_mutex, AV_LOCK_CREATE)) |
| return -1; |
| } |
| return 0; |
| } |
| |
| int avpriv_lock_avformat(void) |
| { |
| if (ff_lockmgr_cb) { |
| if ((*ff_lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN)) |
| return -1; |
| } |
| return 0; |
| } |
| |
| int avpriv_unlock_avformat(void) |
| { |
| if (ff_lockmgr_cb) { |
| if ((*ff_lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE)) |
| return -1; |
| } |
| return 0; |
| } |
| |
| unsigned int avpriv_toupper4(unsigned int x) |
| { |
| return toupper( x &0xFF) |
| + (toupper((x>>8 )&0xFF)<<8 ) |
| + (toupper((x>>16)&0xFF)<<16) |
| + (toupper((x>>24)&0xFF)<<24); |
| } |
| |
| #if !HAVE_THREADS |
| |
| int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f) |
| { |
| f->owner = avctx; |
| |
| ff_init_buffer_info(avctx, f); |
| |
| return ff_get_buffer(avctx, f); |
| } |
| |
| void ff_thread_release_buffer(AVCodecContext *avctx, AVFrame *f) |
| { |
| f->owner->release_buffer(f->owner, f); |
| } |
| |
| void ff_thread_finish_setup(AVCodecContext *avctx) |
| { |
| } |
| |
| void ff_thread_report_progress(AVFrame *f, int progress, int field) |
| { |
| } |
| |
| void ff_thread_await_progress(AVFrame *f, int progress, int field) |
| { |
| } |
| |
| #endif |
| |
| #if FF_API_THREAD_INIT |
| int avcodec_thread_init(AVCodecContext *s, int thread_count) |
| { |
| s->thread_count = thread_count; |
| return ff_thread_init(s); |
| } |
| #endif |
| |
| enum AVMediaType avcodec_get_type(enum CodecID codec_id) |
| { |
| AVCodec *c= avcodec_find_decoder(codec_id); |
| if(!c) |
| c= avcodec_find_encoder(codec_id); |
| if(c) |
| return c->type; |
| |
| if (codec_id <= CODEC_ID_NONE) |
| return AVMEDIA_TYPE_UNKNOWN; |
| else if (codec_id < CODEC_ID_FIRST_AUDIO) |
| return AVMEDIA_TYPE_VIDEO; |
| else if (codec_id < CODEC_ID_FIRST_SUBTITLE) |
| return AVMEDIA_TYPE_AUDIO; |
| else if (codec_id < CODEC_ID_FIRST_UNKNOWN) |
| return AVMEDIA_TYPE_SUBTITLE; |
| |
| return AVMEDIA_TYPE_UNKNOWN; |
| } |
| |
| int avcodec_is_open(AVCodecContext *s) |
| { |
| return !!s->internal; |
| } |
| |
| int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame) |
| { |
| switch (avctx->codec_type) { |
| case AVMEDIA_TYPE_VIDEO: |
| if (av_image_check_size(avctx->width, avctx->height, 0, avctx)) { |
| av_log(avctx, AV_LOG_ERROR, "Invalid dimensions %dx%d\n", |
| avctx->width, avctx->height); |
| return AVERROR_INVALIDDATA; |
| } |
| } |
| return avctx->get_buffer(avctx, frame); |
| } |