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117 lines
3.3 KiB
117 lines
3.3 KiB
/* |
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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 <string.h> |
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#include <stdio.h> |
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#include "libavutil/buffer.h" |
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#include "libavutil/imgutils.h" |
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#include "libavutil/mem.h" |
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#include "avfilter.h" |
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#include "internal.h" |
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#include "video.h" |
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AVFrame *ff_null_get_video_buffer(AVFilterLink *link, int w, int h) |
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{ |
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return ff_get_video_buffer(link->dst->outputs[0], w, h); |
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} |
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/* TODO: set the buffer's priv member to a context structure for the whole |
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* filter chain. This will allow for a buffer pool instead of the constant |
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* alloc & free cycle currently implemented. */ |
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AVFrame *ff_default_get_video_buffer(AVFilterLink *link, int w, int h) |
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{ |
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AVFrame *frame = av_frame_alloc(); |
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int ret; |
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if (!frame) |
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return NULL; |
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frame->width = w; |
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frame->height = h; |
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frame->format = link->format; |
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ret = av_frame_get_buffer(frame, 32); |
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if (ret < 0) |
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av_frame_free(&frame); |
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return frame; |
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} |
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#if FF_API_AVFILTERBUFFER |
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AVFilterBufferRef * |
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avfilter_get_video_buffer_ref_from_arrays(uint8_t *data[4], int linesize[4], int perms, |
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int w, int h, enum AVPixelFormat format) |
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{ |
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AVFilterBuffer *pic = av_mallocz(sizeof(AVFilterBuffer)); |
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AVFilterBufferRef *picref = av_mallocz(sizeof(AVFilterBufferRef)); |
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if (!pic || !picref) |
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goto fail; |
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picref->buf = pic; |
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picref->buf->free = ff_avfilter_default_free_buffer; |
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if (!(picref->video = av_mallocz(sizeof(AVFilterBufferRefVideoProps)))) |
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goto fail; |
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pic->w = picref->video->w = w; |
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pic->h = picref->video->h = h; |
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/* make sure the buffer gets read permission or it's useless for output */ |
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picref->perms = perms | AV_PERM_READ; |
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pic->refcount = 1; |
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picref->type = AVMEDIA_TYPE_VIDEO; |
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pic->format = picref->format = format; |
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memcpy(pic->data, data, 4*sizeof(data[0])); |
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memcpy(pic->linesize, linesize, 4*sizeof(linesize[0])); |
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memcpy(picref->data, pic->data, sizeof(picref->data)); |
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memcpy(picref->linesize, pic->linesize, sizeof(picref->linesize)); |
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pic-> extended_data = pic->data; |
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picref->extended_data = picref->data; |
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picref->pts = AV_NOPTS_VALUE; |
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return picref; |
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fail: |
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if (picref && picref->video) |
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av_free(picref->video); |
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av_free(picref); |
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av_free(pic); |
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return NULL; |
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} |
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#endif |
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AVFrame *ff_get_video_buffer(AVFilterLink *link, int w, int h) |
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{ |
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AVFrame *ret = NULL; |
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FF_DPRINTF_START(NULL, get_video_buffer); ff_dlog_link(NULL, link, 0); |
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if (link->dstpad->get_video_buffer) |
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ret = link->dstpad->get_video_buffer(link, w, h); |
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if (!ret) |
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ret = ff_default_get_video_buffer(link, w, h); |
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return ret; |
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}
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