/*

  * Copyright 2011 Stefano Sabatini | stefasab at gmail.com
  *

  * 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
  * libavcodec/libavfilter gluing utilities
  */
 
 #include "avcodec.h"

 #include "libavutil/opt.h"

 AVFilterBufferRef *avfilter_get_video_buffer_ref_from_frame(const AVFrame *frame,
                                                             int perms)
 {
     AVFilterBufferRef *picref =
         avfilter_get_video_buffer_ref_from_arrays(frame->data, frame->linesize, perms,
                                                   frame->width, frame->height,
                                                   frame->format);
     if (!picref)
         return NULL;
     avfilter_copy_frame_props(picref, frame);
     return picref;
 }

 AVFilterBufferRef *avfilter_get_audio_buffer_ref_from_frame(const AVFrame *frame,
                                                             int perms)
 {
     AVFilterBufferRef *picref =

         avfilter_get_audio_buffer_ref_from_arrays((uint8_t **)frame->data, frame->linesize[0], perms,

                                                   frame->nb_samples, frame->format,

                                                   av_frame_get_channel_layout(frame));

     if (!picref)
         return NULL;
     avfilter_copy_frame_props(picref, frame);
     return picref;
 }
 

 int avfilter_fill_frame_from_audio_buffer_ref(AVFrame *frame,
                                               const AVFilterBufferRef *samplesref)
 {
     if (!samplesref || !samplesref->audio || !frame)
         return AVERROR(EINVAL);
 
     memcpy(frame->data, samplesref->data, sizeof(frame->data));
     frame->pkt_pos    = samplesref->pos;
     frame->format     = samplesref->format;
     frame->nb_samples = samplesref->audio->nb_samples;

     frame->pts        = samplesref->pts;

 
     return 0;
 }
 

 int avfilter_fill_frame_from_video_buffer_ref(AVFrame *frame,
                                               const AVFilterBufferRef *picref)
 {
     if (!picref || !picref->video || !frame)
         return AVERROR(EINVAL);
 
     memcpy(frame->data,     picref->data,     sizeof(frame->data));
     memcpy(frame->linesize, picref->linesize, sizeof(frame->linesize));
     frame->pkt_pos          = picref->pos;
     frame->interlaced_frame = picref->video->interlaced;
     frame->top_field_first  = picref->video->top_field_first;
     frame->key_frame        = picref->video->key_frame;
     frame->pict_type        = picref->video->pict_type;
     frame->sample_aspect_ratio = picref->video->sample_aspect_ratio;

     frame->width            = picref->video->w;
     frame->height           = picref->video->h;

     frame->format           = picref->format;
     frame->pts              = picref->pts;

 
     return 0;
 }

 
 int avfilter_fill_frame_from_buffer_ref(AVFrame *frame,
                                         const AVFilterBufferRef *ref)
 {
     if (!ref)
         return AVERROR(EINVAL);
     return ref->video ? avfilter_fill_frame_from_video_buffer_ref(frame, ref)
                       : avfilter_fill_frame_from_audio_buffer_ref(frame, ref);
 }