2 * Copyright 2007 Bobby Bingham
3 * Copyright Stefano Sabatini <stefasab gmail com>
4 * Copyright Vitor Sessak <vitor1001 gmail com>
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
26 #include "libavutil/avassert.h"
27 #include "libavutil/buffer.h"
28 #include "libavutil/imgutils.h"
29 #include "libavutil/mem.h"
35 AVFrame
*ff_null_get_video_buffer(AVFilterLink
*link
, int w
, int h
)
37 return ff_get_video_buffer(link
->dst
->outputs
[0], w
, h
);
40 /* TODO: set the buffer's priv member to a context structure for the whole
41 * filter chain. This will allow for a buffer pool instead of the constant
42 * alloc & free cycle currently implemented. */
43 AVFrame
*ff_default_get_video_buffer(AVFilterLink
*link
, int w
, int h
)
45 AVFrame
*frame
= av_frame_alloc();
53 frame
->format
= link
->format
;
55 ret
= av_frame_get_buffer(frame
, 32);
57 av_frame_free(&frame
);
62 #if FF_API_AVFILTERBUFFER
64 avfilter_get_video_buffer_ref_from_arrays(uint8_t * const data
[4], const int linesize
[4], int perms
,
65 int w
, int h
, enum AVPixelFormat format
)
67 AVFilterBuffer
*pic
= av_mallocz(sizeof(AVFilterBuffer
));
68 AVFilterBufferRef
*picref
= av_mallocz(sizeof(AVFilterBufferRef
));
74 picref
->buf
->free
= ff_avfilter_default_free_buffer
;
75 if (!(picref
->video
= av_mallocz(sizeof(AVFilterBufferRefVideoProps
))))
78 pic
->w
= picref
->video
->w
= w
;
79 pic
->h
= picref
->video
->h
= h
;
81 /* make sure the buffer gets read permission or it's useless for output */
82 picref
->perms
= perms
| AV_PERM_READ
;
85 picref
->type
= AVMEDIA_TYPE_VIDEO
;
86 pic
->format
= picref
->format
= format
;
88 memcpy(pic
->data
, data
, 4*sizeof(data
[0]));
89 memcpy(pic
->linesize
, linesize
, 4*sizeof(linesize
[0]));
90 memcpy(picref
->data
, pic
->data
, sizeof(picref
->data
));
91 memcpy(picref
->linesize
, pic
->linesize
, sizeof(picref
->linesize
));
93 pic
-> extended_data
= pic
->data
;
94 picref
->extended_data
= picref
->data
;
96 picref
->pts
= AV_NOPTS_VALUE
;
101 if (picref
&& picref
->video
)
102 av_free(picref
->video
);
109 AVFrame
*ff_get_video_buffer(AVFilterLink
*link
, int w
, int h
)
113 FF_TPRINTF_START(NULL
, get_video_buffer
); ff_tlog_link(NULL
, link
, 0);
115 if (link
->dstpad
->get_video_buffer
)
116 ret
= link
->dstpad
->get_video_buffer(link
, w
, h
);
119 ret
= ff_default_get_video_buffer(link
, w
, h
);