mirror of https://github.com/FFmpeg/FFmpeg.git
Anton Khirnov
13 years ago
parent
4c64fed37c
commit
4a1ac8c43f
4 changed files with 169 additions and 147 deletions
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/*
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* This file is part of Libav. |
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* |
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* Libav is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* Libav is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with Libav; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "libavutil/audioconvert.h" |
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#include "libavcodec/avcodec.h" |
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#include "avfilter.h" |
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#include "internal.h" |
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/* TODO: buffer pool. see comment for avfilter_default_get_video_buffer() */ |
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void ff_avfilter_default_free_buffer(AVFilterBuffer *ptr) |
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{ |
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if (ptr->extended_data != ptr->data) |
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av_freep(&ptr->extended_data); |
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av_free(ptr->data[0]); |
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av_free(ptr); |
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} |
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AVFilterBufferRef *avfilter_ref_buffer(AVFilterBufferRef *ref, int pmask) |
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{ |
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AVFilterBufferRef *ret = av_malloc(sizeof(AVFilterBufferRef)); |
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if (!ret) |
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return NULL; |
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*ret = *ref; |
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if (ref->type == AVMEDIA_TYPE_VIDEO) { |
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ret->video = av_malloc(sizeof(AVFilterBufferRefVideoProps)); |
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if (!ret->video) { |
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av_free(ret); |
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return NULL; |
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} |
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*ret->video = *ref->video; |
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ret->extended_data = ret->data; |
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} else if (ref->type == AVMEDIA_TYPE_AUDIO) { |
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ret->audio = av_malloc(sizeof(AVFilterBufferRefAudioProps)); |
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if (!ret->audio) { |
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av_free(ret); |
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return NULL; |
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} |
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*ret->audio = *ref->audio; |
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if (ref->extended_data != ref->data) { |
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int nb_channels = av_get_channel_layout_nb_channels(ref->audio->channel_layout); |
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if (!(ret->extended_data = av_malloc(sizeof(*ret->extended_data) * |
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nb_channels))) { |
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av_freep(&ret->audio); |
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av_freep(&ret); |
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return NULL; |
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} |
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memcpy(ret->extended_data, ref->extended_data, |
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sizeof(*ret->extended_data) * nb_channels); |
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} else |
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ret->extended_data = ret->data; |
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} |
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ret->perms &= pmask; |
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ret->buf->refcount ++; |
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return ret; |
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} |
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void avfilter_unref_buffer(AVFilterBufferRef *ref) |
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{ |
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if (!ref) |
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return; |
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if (!(--ref->buf->refcount)) |
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ref->buf->free(ref->buf); |
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if (ref->extended_data != ref->data) |
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av_freep(&ref->extended_data); |
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av_free(ref->video); |
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av_free(ref->audio); |
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av_free(ref); |
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} |
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int avfilter_copy_frame_props(AVFilterBufferRef *dst, const AVFrame *src) |
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{ |
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dst->pts = src->pts; |
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dst->format = src->format; |
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switch (dst->type) { |
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case AVMEDIA_TYPE_VIDEO: |
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dst->video->w = src->width; |
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dst->video->h = src->height; |
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dst->video->pixel_aspect = src->sample_aspect_ratio; |
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dst->video->interlaced = src->interlaced_frame; |
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dst->video->top_field_first = src->top_field_first; |
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dst->video->key_frame = src->key_frame; |
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dst->video->pict_type = src->pict_type; |
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break; |
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case AVMEDIA_TYPE_AUDIO: |
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dst->audio->sample_rate = src->sample_rate; |
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dst->audio->channel_layout = src->channel_layout; |
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break; |
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default: |
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return AVERROR(EINVAL); |
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} |
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return 0; |
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} |
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int avfilter_copy_buf_props(AVFrame *dst, const AVFilterBufferRef *src) |
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{ |
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int planes, nb_channels; |
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memcpy(dst->data, src->data, sizeof(dst->data)); |
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memcpy(dst->linesize, src->linesize, sizeof(dst->linesize)); |
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dst->pts = src->pts; |
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dst->format = src->format; |
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switch (src->type) { |
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case AVMEDIA_TYPE_VIDEO: |
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dst->width = src->video->w; |
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dst->height = src->video->h; |
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dst->sample_aspect_ratio = src->video->pixel_aspect; |
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dst->interlaced_frame = src->video->interlaced; |
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dst->top_field_first = src->video->top_field_first; |
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dst->key_frame = src->video->key_frame; |
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dst->pict_type = src->video->pict_type; |
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break; |
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case AVMEDIA_TYPE_AUDIO: |
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nb_channels = av_get_channel_layout_nb_channels(src->audio->channel_layout); |
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planes = av_sample_fmt_is_planar(src->format) ? nb_channels : 1; |
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if (planes > FF_ARRAY_ELEMS(dst->data)) { |
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dst->extended_data = av_mallocz(planes * sizeof(*dst->extended_data)); |
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if (!dst->extended_data) |
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return AVERROR(ENOMEM); |
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memcpy(dst->extended_data, src->extended_data, |
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planes * sizeof(dst->extended_data)); |
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} else |
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dst->extended_data = dst->data; |
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dst->sample_rate = src->audio->sample_rate; |
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dst->channel_layout = src->audio->channel_layout; |
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dst->nb_samples = src->audio->nb_samples; |
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break; |
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default: |
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return AVERROR(EINVAL); |
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} |
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return 0; |
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} |
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void avfilter_copy_buffer_ref_props(AVFilterBufferRef *dst, AVFilterBufferRef *src) |
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{ |
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// copy common properties
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dst->pts = src->pts; |
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dst->pos = src->pos; |
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switch (src->type) { |
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case AVMEDIA_TYPE_VIDEO: *dst->video = *src->video; break; |
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case AVMEDIA_TYPE_AUDIO: *dst->audio = *src->audio; break; |
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default: break; |
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} |
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} |
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