git.sesse.net Git - ffmpeg/blob - libavfilter/avcodec.c

   1 /*
   2  * Copyright 2011 Stefano Sabatini | stefasab at gmail.com
   3  *
   4  * This file is part of FFmpeg.
   5  *
   6  * FFmpeg is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * FFmpeg is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with FFmpeg; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 /**
  22  * @file
  23  * libavcodec/libavfilter gluing utilities
  24  */
  25
  26 #include "avcodec.h"
  27 #include "libavutil/opt.h"
  28
  29 int avfilter_copy_frame_props(AVFilterBufferRef *dst, const AVFrame *src)
  30 {
  31     dst->pts    = src->pts;
  32     dst->pos    = av_frame_get_pkt_pos(src);
  33     dst->format = src->format;
  34
  35     switch (dst->type) {
  36     case AVMEDIA_TYPE_VIDEO:
  37         dst->video->w                   = src->width;
  38         dst->video->h                   = src->height;
  39         dst->video->sample_aspect_ratio = src->sample_aspect_ratio;
  40         dst->video->interlaced          = src->interlaced_frame;
  41         dst->video->top_field_first     = src->top_field_first;
  42         dst->video->key_frame           = src->key_frame;
  43         dst->video->pict_type           = src->pict_type;
  44         break;
  45     case AVMEDIA_TYPE_AUDIO:
  46         dst->audio->sample_rate         = src->sample_rate;
  47         dst->audio->channel_layout      = src->channel_layout;
  48         break;
  49     default:
  50         return AVERROR(EINVAL);
  51     }
  52
  53     return 0;
  54 }
  55
  56 AVFilterBufferRef *avfilter_get_video_buffer_ref_from_frame(const AVFrame *frame,
  57                                                             int perms)
  58 {
  59     AVFilterBufferRef *picref =
  60         avfilter_get_video_buffer_ref_from_arrays(frame->data, frame->linesize, perms,
  61                                                   frame->width, frame->height,
  62                                                   frame->format);
  63     if (!picref)
  64         return NULL;
  65     avfilter_copy_frame_props(picref, frame);
  66     return picref;
  67 }
  68
  69 AVFilterBufferRef *avfilter_get_audio_buffer_ref_from_frame(const AVFrame *frame,
  70                                                             int perms)
  71 {
  72     AVFilterBufferRef *picref =
  73         avfilter_get_audio_buffer_ref_from_arrays((uint8_t **)frame->data, frame->linesize[0], perms,
  74                                                   frame->nb_samples, frame->format,
  75                                                   av_frame_get_channel_layout(frame));
  76     if (!picref)
  77         return NULL;
  78     avfilter_copy_frame_props(picref, frame);
  79     return picref;
  80 }
  81
  82 int avfilter_fill_frame_from_audio_buffer_ref(AVFrame *frame,
  83                                               const AVFilterBufferRef *samplesref)
  84 {
  85     if (!samplesref || !samplesref->audio || !frame)
  86         return AVERROR(EINVAL);
  87
  88     memcpy(frame->data, samplesref->data, sizeof(frame->data));
  89     memcpy(frame->linesize, samplesref->linesize, sizeof(frame->linesize));
  90     av_frame_set_pkt_pos(frame, samplesref->pos);
  91     frame->format         = samplesref->format;
  92     frame->nb_samples     = samplesref->audio->nb_samples;
  93     frame->pts            = samplesref->pts;
  94     frame->sample_rate    = samplesref->audio->sample_rate;
  95     frame->channel_layout = samplesref->audio->channel_layout;
  96
  97     return 0;
  98 }
  99
 100 int avfilter_fill_frame_from_video_buffer_ref(AVFrame *frame,
 101                                               const AVFilterBufferRef *picref)
 102 {
 103     if (!picref || !picref->video || !frame)
 104         return AVERROR(EINVAL);
 105
 106     memcpy(frame->data,     picref->data,     sizeof(frame->data));
 107     memcpy(frame->linesize, picref->linesize, sizeof(frame->linesize));
 108     av_frame_set_pkt_pos(frame, picref->pos);
 109     frame->interlaced_frame = picref->video->interlaced;
 110     frame->top_field_first  = picref->video->top_field_first;
 111     frame->key_frame        = picref->video->key_frame;
 112     frame->pict_type        = picref->video->pict_type;
 113     frame->sample_aspect_ratio = picref->video->sample_aspect_ratio;
 114     frame->width            = picref->video->w;
 115     frame->height           = picref->video->h;
 116     frame->format           = picref->format;
 117     frame->pts              = picref->pts;
 118
 119     return 0;
 120 }
 121
 122 int avfilter_fill_frame_from_buffer_ref(AVFrame *frame,
 123                                         const AVFilterBufferRef *ref)
 124 {
 125     if (!ref)
 126         return AVERROR(EINVAL);
 127     return ref->video ? avfilter_fill_frame_from_video_buffer_ref(frame, ref)
 128                       : avfilter_fill_frame_from_audio_buffer_ref(frame, ref);
 129 }