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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /* |
| 2 | * y41p encoder |
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| 3 | * |
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| 4 | * Copyright (c) 2012 Paul B Mahol |
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| 5 | * |
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| 6 | * This file is part of FFmpeg. |
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| 7 | * |
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| 8 | * FFmpeg is free software; you can redistribute it and/or |
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| 9 | * modify it under the terms of the GNU Lesser General Public |
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| 10 | * License as published by the Free Software Foundation; either |
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| 11 | * version 2.1 of the License, or (at your option) any later version. |
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| 12 | * |
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| 13 | * FFmpeg is distributed in the hope that it will be useful, |
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| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 16 | * Lesser General Public License for more details. |
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| 17 | * |
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| 18 | * You should have received a copy of the GNU Lesser General Public |
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| 19 | * License along with FFmpeg; if not, write to the Free Software |
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| 20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 21 | */ |
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| 22 | |||
| 23 | #include "avcodec.h" |
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| 24 | #include "internal.h" |
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| 25 | |||
| 26 | static av_cold int y41p_encode_init(AVCodecContext *avctx) |
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| 27 | { |
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| 28 | if (avctx->width & 7) { |
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| 29 | av_log(avctx, AV_LOG_ERROR, "y41p requires width to be divisible by 8.\n"); |
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| 30 | return AVERROR_INVALIDDATA; |
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| 31 | } |
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| 32 | |||
| 33 | avctx->coded_frame = avcodec_alloc_frame(); |
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| 34 | avctx->bits_per_coded_sample = 12; |
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| 35 | |||
| 36 | if (!avctx->coded_frame) { |
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| 37 | av_log(avctx, AV_LOG_ERROR, "Could not allocate frame.\n"); |
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| 38 | return AVERROR(ENOMEM); |
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| 39 | } |
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| 40 | |||
| 41 | return 0; |
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| 42 | } |
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| 43 | |||
| 44 | static int y41p_encode_frame(AVCodecContext *avctx, AVPacket *pkt, |
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| 45 | const AVFrame *pic, int *got_packet) |
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| 46 | { |
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| 47 | uint8_t *dst; |
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| 48 | uint8_t *y, *u, *v; |
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| 49 | int i, j, ret; |
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| 50 | |||
| 51 | if ((ret = ff_alloc_packet2(avctx, pkt, avctx->width * avctx->height * 1.5)) < 0) |
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| 52 | return ret; |
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| 53 | |||
| 54 | avctx->coded_frame->key_frame = 1; |
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| 55 | avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I; |
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| 56 | dst = pkt->data; |
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| 57 | |||
| 58 | for (i = avctx->height - 1; i >= 0; i--) { |
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| 59 | y = &pic->data[0][i * pic->linesize[0]]; |
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| 60 | u = &pic->data[1][i * pic->linesize[1]]; |
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| 61 | v = &pic->data[2][i * pic->linesize[2]]; |
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| 62 | for (j = 0; j < avctx->width; j += 8) { |
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| 63 | *(dst++) = *(u++); |
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| 64 | *(dst++) = *(y++); |
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| 65 | *(dst++) = *(v++); |
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| 66 | *(dst++) = *(y++); |
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| 67 | |||
| 68 | *(dst++) = *(u++); |
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| 69 | *(dst++) = *(y++); |
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| 70 | *(dst++) = *(v++); |
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| 71 | *(dst++) = *(y++); |
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| 72 | |||
| 73 | *(dst++) = *(y++); |
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| 74 | *(dst++) = *(y++); |
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| 75 | *(dst++) = *(y++); |
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| 76 | *(dst++) = *(y++); |
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| 77 | } |
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| 78 | } |
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| 79 | |||
| 80 | pkt->flags |= AV_PKT_FLAG_KEY; |
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| 81 | *got_packet = 1; |
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| 82 | return 0; |
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| 83 | } |
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| 84 | |||
| 85 | static av_cold int y41p_encode_close(AVCodecContext *avctx) |
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| 86 | { |
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| 87 | av_freep(&avctx->coded_frame); |
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| 88 | |||
| 89 | return 0; |
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| 90 | } |
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| 91 | |||
| 92 | AVCodec ff_y41p_encoder = { |
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| 93 | .name = "y41p", |
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| 94 | .long_name = NULL_IF_CONFIG_SMALL("Uncompressed YUV 4:1:1 12-bit"), |
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| 95 | .type = AVMEDIA_TYPE_VIDEO, |
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| 96 | .id = AV_CODEC_ID_Y41P, |
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| 97 | .init = y41p_encode_init, |
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| 98 | .encode2 = y41p_encode_frame, |
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| 99 | .close = y41p_encode_close, |
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| 100 | .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV411P, |
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| 101 | AV_PIX_FMT_NONE }, |
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| 102 | }; |