blob: d181b74570d6e6fba6b5956ea530891718479c80
| 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 | |
| 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 | |
| 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 |