| /* |
| * 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/avassert.h" |
| #include "libavutil/channel_layout.h" |
| #include "libavutil/opt.h" |
| |
| #if FF_API_AVFILTERBUFFER |
| 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; |
| if (avfilter_copy_frame_props(picref, frame) < 0) { |
| picref->buf->data[0] = NULL; |
| avfilter_unref_bufferp(&picref); |
| } |
| return picref; |
| } |
| |
| AVFilterBufferRef *avfilter_get_audio_buffer_ref_from_frame(const AVFrame *frame, |
| int perms) |
| { |
| AVFilterBufferRef *samplesref; |
| int channels = av_frame_get_channels(frame); |
| int64_t layout = av_frame_get_channel_layout(frame); |
| |
| if (layout && av_get_channel_layout_nb_channels(layout) != av_frame_get_channels(frame)) { |
| av_log(0, AV_LOG_ERROR, "Layout indicates a different number of channels than actually present\n"); |
| return NULL; |
| } |
| |
| samplesref = avfilter_get_audio_buffer_ref_from_arrays_channels( |
| (uint8_t **)frame->extended_data, frame->linesize[0], perms, |
| frame->nb_samples, frame->format, channels, layout); |
| if (!samplesref) |
| return NULL; |
| if (avfilter_copy_frame_props(samplesref, frame) < 0) { |
| samplesref->buf->data[0] = NULL; |
| avfilter_unref_bufferp(&samplesref); |
| } |
| return samplesref; |
| } |
| |
| AVFilterBufferRef *avfilter_get_buffer_ref_from_frame(enum AVMediaType type, |
| const AVFrame *frame, |
| int perms) |
| { |
| switch (type) { |
| case AVMEDIA_TYPE_VIDEO: |
| return avfilter_get_video_buffer_ref_from_frame(frame, perms); |
| case AVMEDIA_TYPE_AUDIO: |
| return avfilter_get_audio_buffer_ref_from_frame(frame, perms); |
| default: |
| return NULL; |
| } |
| } |
| |
| int avfilter_copy_buf_props(AVFrame *dst, const AVFilterBufferRef *src) |
| { |
| int planes, nb_channels; |
| |
| if (!dst) |
| return AVERROR(EINVAL); |
| /* abort in case the src is NULL and dst is not, avoid inconsistent state in dst */ |
| av_assert0(src); |
| |
| memcpy(dst->data, src->data, sizeof(dst->data)); |
| memcpy(dst->linesize, src->linesize, sizeof(dst->linesize)); |
| |
| dst->pts = src->pts; |
| dst->format = src->format; |
| av_frame_set_pkt_pos(dst, src->pos); |
| |
| switch (src->type) { |
| case AVMEDIA_TYPE_VIDEO: |
| av_assert0(src->video); |
| dst->width = src->video->w; |
| dst->height = src->video->h; |
| dst->sample_aspect_ratio = src->video->sample_aspect_ratio; |
| dst->interlaced_frame = src->video->interlaced; |
| dst->top_field_first = src->video->top_field_first; |
| dst->key_frame = src->video->key_frame; |
| dst->pict_type = src->video->pict_type; |
| break; |
| case AVMEDIA_TYPE_AUDIO: |
| av_assert0(src->audio); |
| nb_channels = av_get_channel_layout_nb_channels(src->audio->channel_layout); |
| planes = av_sample_fmt_is_planar(src->format) ? nb_channels : 1; |
| |
| if (planes > FF_ARRAY_ELEMS(dst->data)) { |
| dst->extended_data = av_mallocz_array(planes, sizeof(*dst->extended_data)); |
| if (!dst->extended_data) |
| return AVERROR(ENOMEM); |
| memcpy(dst->extended_data, src->extended_data, |
| planes * sizeof(*dst->extended_data)); |
| } else |
| dst->extended_data = dst->data; |
| dst->nb_samples = src->audio->nb_samples; |
| av_frame_set_sample_rate (dst, src->audio->sample_rate); |
| av_frame_set_channel_layout(dst, src->audio->channel_layout); |
| av_frame_set_channels (dst, src->audio->channels); |
| break; |
| default: |
| return AVERROR(EINVAL); |
| } |
| |
| return 0; |
| } |
| #endif |