1 /*
2 * Raw video utils
3 * Copyright (c) 2016 Michael Niedermayer
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
24
26 {
27 int ret;
30 int min_stride = (par->
width * bpc + 7) >> 3;
31 int with_pal_size = min_stride * par->
height + 1024;
32 int contains_pal = bpc == 8 && pkt->
size == with_pal_size;
35 int padding = expected_stride -
FFMIN(expected_stride, stride);
36 int y;
38
39 if (pkt->
size == expected_stride * par->
height)
40 return 0;
41 if (size != stride * par->
height)
42 return 0;
43
45 if (!new_pkt)
47
49 if (ret < 0)
51
53 if (ret < 0)
55
56 for (y = 0; y<par->
height; y++) {
57 memcpy(new_pkt->
data + y*expected_stride, pkt->
data + y*stride, FFMIN(expected_stride, stride));
58 memset(new_pkt->
data + y*expected_stride + expected_stride - padding, 0, padding);
59 }
60
61 *ppkt = new_pkt;
62 return 1 + contains_pal;
65
66 return ret;
67 }
int ff_reshuffle_raw_rgb(AVFormatContext *s, AVPacket **ppkt, AVCodecParameters *par, int expected_stride)
Reshuffles the lines to use the user specified stride.
This struct describes the properties of an encoded stream.
void av_packet_free(AVPacket **pkt)
Free the packet, if the packet is reference counted, it will be unreferenced first.
int av_new_packet(AVPacket *pkt, int size)
Allocate the payload of a packet and initialize its fields with default values.
int av_packet_copy_props(AVPacket *dst, const AVPacket *src)
Copy only "properties" fields from src to dst.
GLint GLenum GLboolean GLsizei stride
AVPacket * av_packet_alloc(void)
Allocate an AVPacket and set its fields to default values.
int bits_per_coded_sample
The number of bits per sample in the codedwords.
This structure stores compressed data.