repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * y41p encoder | |
| 3 | * | |
| 4 | * Copyright (c) 2012 Paul B Mahol | |
| 5 | * | |
| 6 | * This file is part of FFmpeg. | |
| 7 | * | |
| 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. | |
| 12 | * | |
| 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. | |
| 17 | * | |
| 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 | |
| 21 | */ | |
| 22 | ||
| 23 | #include "avcodec.h" | |
| 24 | #include "internal.h" | |
| 25 | ||
| 26 | static av_cold int y41p_encode_init(AVCodecContext *avctx) | |
| 27 | { | |
| 28 | if (avctx->width & 7) { | |
| 29 | av_log(avctx, AV_LOG_ERROR, "y41p requires width to be divisible by 8.\n"); | |
| 30 | return AVERROR_INVALIDDATA; | |
| 31 | } | |
| 32 | ||
| 33 | avctx->coded_frame = av_frame_alloc(); | |
| 34 | avctx->bits_per_coded_sample = 12; | |
| 35 | ||
| 36 | if (!avctx->coded_frame) { | |
| 37 | av_log(avctx, AV_LOG_ERROR, "Could not allocate frame.\n"); | |
| 38 | return AVERROR(ENOMEM); | |
| 39 | } | |
| 40 | ||
| 41 | return 0; | |
| 42 | } | |
| 43 | ||
| 44 | static int y41p_encode_frame(AVCodecContext *avctx, AVPacket *pkt, | |
| 45 | const AVFrame *pic, int *got_packet) | |
| 46 | { | |
| 47 | uint8_t *dst; | |
| 48 | uint8_t *y, *u, *v; | |
| 49 | int i, j, ret; | |
| 50 | ||
| 51 | if ((ret = ff_alloc_packet2(avctx, pkt, avctx->width * avctx->height * 1.5)) < 0) | |
| 52 | return ret; | |
| 53 | ||
| 54 | avctx->coded_frame->key_frame = 1; | |
| 55 | avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I; | |
| 56 | dst = pkt->data; | |
| 57 | ||
| 58 | for (i = avctx->height - 1; i >= 0; i--) { | |
| 59 | y = &pic->data[0][i * pic->linesize[0]]; | |
| 60 | u = &pic->data[1][i * pic->linesize[1]]; | |
| 61 | v = &pic->data[2][i * pic->linesize[2]]; | |
| 62 | for (j = 0; j < avctx->width; j += 8) { | |
| 63 | *(dst++) = *(u++); | |
| 64 | *(dst++) = *(y++); | |
| 65 | *(dst++) = *(v++); | |
| 66 | *(dst++) = *(y++); | |
| 67 | ||
| 68 | *(dst++) = *(u++); | |
| 69 | *(dst++) = *(y++); | |
| 70 | *(dst++) = *(v++); | |
| 71 | *(dst++) = *(y++); | |
| 72 | ||
| 73 | *(dst++) = *(y++); | |
| 74 | *(dst++) = *(y++); | |
| 75 | *(dst++) = *(y++); | |
| 76 | *(dst++) = *(y++); | |
| 77 | } | |
| 78 | } | |
| 79 | ||
| 80 | pkt->flags |= AV_PKT_FLAG_KEY; | |
| 81 | *got_packet = 1; | |
| 82 | return 0; | |
| 83 | } | |
| 84 | ||
| 85 | static av_cold int y41p_encode_close(AVCodecContext *avctx) | |
| 86 | { | |
| 87 | av_freep(&avctx->coded_frame); | |
| 88 | ||
| 89 | return 0; | |
| 90 | } | |
| 91 | ||
| 92 | AVCodec ff_y41p_encoder = { | |
| 93 | .name = "y41p", | |
| 94 | .long_name = NULL_IF_CONFIG_SMALL("Uncompressed YUV 4:1:1 12-bit"), | |
| 95 | .type = AVMEDIA_TYPE_VIDEO, | |
| 96 | .id = AV_CODEC_ID_Y41P, | |
| 97 | .init = y41p_encode_init, | |
| 98 | .encode2 = y41p_encode_frame, | |
| 99 | .close = y41p_encode_close, | |
| 100 | .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV411P, | |
| 101 | AV_PIX_FMT_NONE }, | |
| 102 | }; |