yading@10: /*
yading@10:  * Copyright 2011 Stefano Sabatini | stefasab at gmail.com
yading@10:  *
yading@10:  * This file is part of FFmpeg.
yading@10:  *
yading@10:  * FFmpeg is free software; you can redistribute it and/or
yading@10:  * modify it under the terms of the GNU Lesser General Public
yading@10:  * License as published by the Free Software Foundation; either
yading@10:  * version 2.1 of the License, or (at your option) any later version.
yading@10:  *
yading@10:  * FFmpeg is distributed in the hope that it will be useful,
yading@10:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@10:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@10:  * Lesser General Public License for more details.
yading@10:  *
yading@10:  * You should have received a copy of the GNU Lesser General Public
yading@10:  * License along with FFmpeg; if not, write to the Free Software
yading@10:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@10:  */
yading@10: 
yading@10: /**
yading@10:  * @file
yading@10:  * libavcodec/libavfilter gluing utilities
yading@10:  */
yading@10: 
yading@10: #include "avcodec.h"
yading@10: #include "libavutil/avassert.h"
yading@10: #include "libavutil/channel_layout.h"
yading@10: #include "libavutil/opt.h"
yading@10: 
yading@10: #if FF_API_AVFILTERBUFFER
yading@10: AVFilterBufferRef *avfilter_get_video_buffer_ref_from_frame(const AVFrame *frame,
yading@10:                                                             int perms)
yading@10: {
yading@10:     AVFilterBufferRef *picref =
yading@10:         avfilter_get_video_buffer_ref_from_arrays(frame->data, frame->linesize, perms,
yading@10:                                                   frame->width, frame->height,
yading@10:                                                   frame->format);
yading@10:     if (!picref)
yading@10:         return NULL;
yading@10:     if (avfilter_copy_frame_props(picref, frame) < 0) {
yading@10:         picref->buf->data[0] = NULL;
yading@10:         avfilter_unref_bufferp(&picref);
yading@10:     }
yading@10:     return picref;
yading@10: }
yading@10: 
yading@10: AVFilterBufferRef *avfilter_get_audio_buffer_ref_from_frame(const AVFrame *frame,
yading@10:                                                             int perms)
yading@10: {
yading@10:     AVFilterBufferRef *samplesref;
yading@10:     int channels = av_frame_get_channels(frame);
yading@10:     int64_t layout = av_frame_get_channel_layout(frame);
yading@10: 
yading@10:     if (layout && av_get_channel_layout_nb_channels(layout) != av_frame_get_channels(frame)) {
yading@10:         av_log(0, AV_LOG_ERROR, "Layout indicates a different number of channels than actually present\n");
yading@10:         return NULL;
yading@10:     }
yading@10: 
yading@10:     samplesref = avfilter_get_audio_buffer_ref_from_arrays_channels(
yading@10:         (uint8_t **)frame->extended_data, frame->linesize[0], perms,
yading@10:         frame->nb_samples, frame->format, channels, layout);
yading@10:     if (!samplesref)
yading@10:         return NULL;
yading@10:     if (avfilter_copy_frame_props(samplesref, frame) < 0) {
yading@10:         samplesref->buf->data[0] = NULL;
yading@10:         avfilter_unref_bufferp(&samplesref);
yading@10:     }
yading@10:     return samplesref;
yading@10: }
yading@10: 
yading@10: AVFilterBufferRef *avfilter_get_buffer_ref_from_frame(enum AVMediaType type,
yading@10:                                                       const AVFrame *frame,
yading@10:                                                       int perms)
yading@10: {
yading@10:     switch (type) {
yading@10:     case AVMEDIA_TYPE_VIDEO:
yading@10:         return avfilter_get_video_buffer_ref_from_frame(frame, perms);
yading@10:     case AVMEDIA_TYPE_AUDIO:
yading@10:         return avfilter_get_audio_buffer_ref_from_frame(frame, perms);
yading@10:     default:
yading@10:         return NULL;
yading@10:     }
yading@10: }
yading@10: 
yading@10: int avfilter_copy_buf_props(AVFrame *dst, const AVFilterBufferRef *src)
yading@10: {
yading@10:     int planes, nb_channels;
yading@10: 
yading@10:     if (!dst)
yading@10:         return AVERROR(EINVAL);
yading@10:     /* abort in case the src is NULL and dst is not, avoid inconsistent state in dst */
yading@10:     av_assert0(src);
yading@10: 
yading@10:     memcpy(dst->data, src->data, sizeof(dst->data));
yading@10:     memcpy(dst->linesize, src->linesize, sizeof(dst->linesize));
yading@10: 
yading@10:     dst->pts     = src->pts;
yading@10:     dst->format  = src->format;
yading@10:     av_frame_set_pkt_pos(dst, src->pos);
yading@10: 
yading@10:     switch (src->type) {
yading@10:     case AVMEDIA_TYPE_VIDEO:
yading@10:         av_assert0(src->video);
yading@10:         dst->width               = src->video->w;
yading@10:         dst->height              = src->video->h;
yading@10:         dst->sample_aspect_ratio = src->video->sample_aspect_ratio;
yading@10:         dst->interlaced_frame    = src->video->interlaced;
yading@10:         dst->top_field_first     = src->video->top_field_first;
yading@10:         dst->key_frame           = src->video->key_frame;
yading@10:         dst->pict_type           = src->video->pict_type;
yading@10:         break;
yading@10:     case AVMEDIA_TYPE_AUDIO:
yading@10:         av_assert0(src->audio);
yading@10:         nb_channels = av_get_channel_layout_nb_channels(src->audio->channel_layout);
yading@10:         planes      = av_sample_fmt_is_planar(src->format) ? nb_channels : 1;
yading@10: 
yading@10:         if (planes > FF_ARRAY_ELEMS(dst->data)) {
yading@10:             dst->extended_data = av_mallocz(planes * sizeof(*dst->extended_data));
yading@10:             if (!dst->extended_data)
yading@10:                 return AVERROR(ENOMEM);
yading@10:             memcpy(dst->extended_data, src->extended_data,
yading@10:                    planes * sizeof(*dst->extended_data));
yading@10:         } else
yading@10:             dst->extended_data = dst->data;
yading@10:         dst->nb_samples          = src->audio->nb_samples;
yading@10:         av_frame_set_sample_rate   (dst, src->audio->sample_rate);
yading@10:         av_frame_set_channel_layout(dst, src->audio->channel_layout);
yading@10:         av_frame_set_channels      (dst, src->audio->channels);
yading@10:         break;
yading@10:     default:
yading@10:         return AVERROR(EINVAL);
yading@10:     }
yading@10: 
yading@10:     return 0;
yading@10: }
yading@10: #endif
yading@10: 
yading@10: #if FF_API_FILL_FRAME
yading@10: int avfilter_fill_frame_from_audio_buffer_ref(AVFrame *frame,
yading@10:                                               const AVFilterBufferRef *samplesref)
yading@10: {
yading@10:     return avfilter_copy_buf_props(frame, samplesref);
yading@10: }
yading@10: 
yading@10: int avfilter_fill_frame_from_video_buffer_ref(AVFrame *frame,
yading@10:                                               const AVFilterBufferRef *picref)
yading@10: {
yading@10:     return avfilter_copy_buf_props(frame, picref);
yading@10: }
yading@10: 
yading@10: int avfilter_fill_frame_from_buffer_ref(AVFrame *frame,
yading@10:                                         const AVFilterBufferRef *ref)
yading@10: {
yading@10:     return avfilter_copy_buf_props(frame, ref);
yading@10: }
yading@10: #endif