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1 /**
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
19 #include "film_grain_params.h"
22 {
25  if (size)
26  *size = sizeof(*params);
28  return params;
29 }
32 {
33  AVFrameSideData *side_data = av_frame_new_side_data(frame,
35  sizeof(AVFilmGrainParams));
36  if (!side_data)
37  return NULL;
39  memset(side_data->data, 0, sizeof(AVFilmGrainParams));
41  return (AVFilmGrainParams *)side_data->data;
42 }
#define NULL
Definition: coverity.c:32
This structure describes decoded (raw) audio or video data.
Definition: frame.h:314
This structure describes how to handle film grain synthesis in video for specific codecs...
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:237
AVFilmGrainParams * av_film_grain_params_alloc(size_t *size)
This file is part of FFmpeg.
Film grain parameters for a frame, described by AVFilmGrainParameters.
Definition: frame.h:200
Structure to hold side data for an AVFrame.
Definition: frame.h:220
ptrdiff_t size
Definition: opengl_enc.c:100
GLenum GLint * params
Definition: opengl_enc.c:113
AVFilmGrainParams * av_film_grain_params_create_side_data(AVFrame *frame)
Allocate a complete AVFilmGrainParams and add it to the frame.
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
uint8_t * data
Definition: frame.h:222
AVFrameSideData * av_frame_new_side_data(AVFrame *frame, enum AVFrameSideDataType type, int size)
Add a new side data to a frame.
Definition: frame.c:726