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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /* |
| 2 | * v308 decoder |
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| 3 | * Copyright (c) 2011 Carl Eugen Hoyos |
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| 4 | * |
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| 5 | * This file is part of FFmpeg. |
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| 6 | * |
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| 7 | * FFmpeg is free software; you can redistribute it and/or |
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| 8 | * modify it under the terms of the GNU Lesser General Public |
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| 9 | * License as published by the Free Software Foundation; either |
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| 10 | * version 2.1 of the License, or (at your option) any later version. |
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| 11 | * |
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| 12 | * FFmpeg is distributed in the hope that it will be useful, |
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 15 | * Lesser General Public License for more details. |
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| 16 | * |
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| 17 | * You should have received a copy of the GNU Lesser General Public |
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| 18 | * License along with FFmpeg; if not, write to the Free Software |
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| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 20 | */ |
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| 21 | |||
| 22 | #include "avcodec.h" |
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| 23 | #include "internal.h" |
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| 24 | |||
| 25 | static av_cold int v308_decode_init(AVCodecContext *avctx) |
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| 26 | { |
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| 27 | avctx->pix_fmt = AV_PIX_FMT_YUV444P; |
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| 28 | |||
| 29 | if (avctx->width & 1) |
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| 30 | av_log(avctx, AV_LOG_WARNING, "v308 requires width to be even.\n"); |
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| 31 | |||
| 32 | return 0; |
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| 33 | } |
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| 34 | |||
| 35 | static int v308_decode_frame(AVCodecContext *avctx, void *data, |
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| 36 | int *got_frame, AVPacket *avpkt) |
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| 37 | { |
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| 38 | AVFrame *pic = data; |
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| 39 | const uint8_t *src = avpkt->data; |
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| 40 | uint8_t *y, *u, *v; |
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| 41 | int i, j, ret; |
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| 42 | |||
| 43 | if (avpkt->size < 3 * avctx->height * avctx->width) { |
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| 44 | av_log(avctx, AV_LOG_ERROR, "Insufficient input data.\n"); |
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| 45 | return AVERROR(EINVAL); |
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| 46 | } |
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| 47 | |||
| 48 | if ((ret = ff_get_buffer(avctx, pic, 0)) < 0) |
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| 49 | return ret; |
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| 50 | |||
| 51 | pic->key_frame = 1; |
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| 52 | pic->pict_type = AV_PICTURE_TYPE_I; |
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| 53 | |||
| 54 | y = pic->data[0]; |
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| 55 | u = pic->data[1]; |
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| 56 | v = pic->data[2]; |
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| 57 | |||
| 58 | for (i = 0; i < avctx->height; i++) { |
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| 59 | for (j = 0; j < avctx->width; j++) { |
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| 60 | v[j] = *src++; |
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| 61 | y[j] = *src++; |
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| 62 | u[j] = *src++; |
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| 63 | } |
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| 64 | |||
| 65 | y += pic->linesize[0]; |
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| 66 | u += pic->linesize[1]; |
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| 67 | v += pic->linesize[2]; |
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| 68 | } |
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| 69 | |||
| 70 | *got_frame = 1; |
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| 71 | |||
| 72 | return avpkt->size; |
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| 73 | } |
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| 74 | |||
| 75 | AVCodec ff_v308_decoder = { |
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| 76 | .name = "v308", |
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| 77 | .long_name = NULL_IF_CONFIG_SMALL("Uncompressed packed 4:4:4"), |
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| 78 | .type = AVMEDIA_TYPE_VIDEO, |
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| 79 | .id = AV_CODEC_ID_V308, |
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| 80 | .init = v308_decode_init, |
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| 81 | .decode = v308_decode_frame, |
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| 82 | .capabilities = CODEC_CAP_DR1, |
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| 83 | }; |