1 /*
2 * Raw Video Encoder
3 * Copyright (c) 2001 Fabrice Bellard
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
22 /**
23 * @file
24 * Raw Video Encoder
25 */
26
27 #include "avcodec.h"
28 #include "raw.h"
29 #include "internal.h"
30 #include "libavutil/pixdesc.h"
31 #include "libavutil/intreadwrite.h"
32 #include "libavutil/imgutils.h"
33 #include "libavutil/internal.h"
34
raw_encode_init(AVCodecContext * avctx)35 static av_cold int raw_encode_init(AVCodecContext *avctx)
36 {
37 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
38
39 #if FF_API_CODED_FRAME
40 FF_DISABLE_DEPRECATION_WARNINGS
41 avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
42 FF_ENABLE_DEPRECATION_WARNINGS
43 #endif
44 avctx->bits_per_coded_sample = av_get_bits_per_pixel(desc);
45 if(!avctx->codec_tag)
46 avctx->codec_tag = avcodec_pix_fmt_to_codec_tag(avctx->pix_fmt);
47 avctx->bit_rate = ff_guess_coded_bitrate(avctx);
48
49 return 0;
50 }
51
raw_encode(AVCodecContext * avctx,AVPacket * pkt,const AVFrame * frame,int * got_packet)52 static int raw_encode(AVCodecContext *avctx, AVPacket *pkt,
53 const AVFrame *frame, int *got_packet)
54 {
55 int ret = av_image_get_buffer_size(frame->format,
56 frame->width, frame->height, 1);
57
58 if (ret < 0)
59 return ret;
60
61 if ((ret = ff_alloc_packet2(avctx, pkt, ret, ret)) < 0)
62 return ret;
63 if ((ret = av_image_copy_to_buffer(pkt->data, pkt->size,
64 (const uint8_t **)frame->data, frame->linesize,
65 frame->format,
66 frame->width, frame->height, 1)) < 0)
67 return ret;
68
69 if(avctx->codec_tag == AV_RL32("yuv2") && ret > 0 &&
70 frame->format == AV_PIX_FMT_YUYV422) {
71 int x;
72 for(x = 1; x < frame->height*frame->width*2; x += 2)
73 pkt->data[x] ^= 0x80;
74 } else if (avctx->codec_tag == AV_RL32("b64a") && ret > 0 &&
75 frame->format == AV_PIX_FMT_RGBA64BE) {
76 uint64_t v;
77 int x;
78 for (x = 0; x < frame->height * frame->width; x++) {
79 v = AV_RB64(&pkt->data[8 * x]);
80 AV_WB64(&pkt->data[8 * x], v << 48 | v >> 16);
81 }
82 }
83 pkt->flags |= AV_PKT_FLAG_KEY;
84 *got_packet = 1;
85 return 0;
86 }
87
88 AVCodec ff_rawvideo_encoder = {
89 .name = "rawvideo",
90 .long_name = NULL_IF_CONFIG_SMALL("raw video"),
91 .type = AVMEDIA_TYPE_VIDEO,
92 .id = AV_CODEC_ID_RAWVIDEO,
93 .init = raw_encode_init,
94 .encode2 = raw_encode,
95 };
96