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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /* |
| 2 | * v410 decoder |
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| 3 | * |
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| 4 | * Copyright (c) 2011 Derek Buitenhuis |
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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 "libavutil/common.h" |
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| 24 | #include "libavutil/intreadwrite.h" |
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| 25 | #include "avcodec.h" |
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| 26 | #include "internal.h" |
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| 27 | |||
| 28 | static av_cold int v410_decode_init(AVCodecContext *avctx) |
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| 29 | { |
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| 30 | avctx->pix_fmt = AV_PIX_FMT_YUV444P10; |
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| 31 | avctx->bits_per_raw_sample = 10; |
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| 32 | |||
| 33 | if (avctx->width & 1) { |
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| 34 | if (avctx->err_recognition & AV_EF_EXPLODE) { |
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| 35 | av_log(avctx, AV_LOG_ERROR, "v410 requires width to be even.\n"); |
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| 36 | return AVERROR_INVALIDDATA; |
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| 37 | } else { |
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| 38 | av_log(avctx, AV_LOG_WARNING, "v410 requires width to be even, continuing anyway.\n"); |
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| 39 | } |
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| 40 | } |
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| 41 | |||
| 42 | return 0; |
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| 43 | } |
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| 44 | |||
| 45 | static int v410_decode_frame(AVCodecContext *avctx, void *data, |
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| 46 | int *got_frame, AVPacket *avpkt) |
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| 47 | { |
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| 48 | AVFrame *pic = data; |
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| 49 | uint8_t *src = avpkt->data; |
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| 50 | uint16_t *y, *u, *v; |
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| 51 | uint32_t val; |
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| 52 | int i, j, ret; |
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| 53 | |||
| 54 | if (avpkt->size < 4 * avctx->height * avctx->width) { |
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| 55 | av_log(avctx, AV_LOG_ERROR, "Insufficient input data.\n"); |
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| 56 | return AVERROR(EINVAL); |
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| 57 | } |
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| 58 | |||
| 59 | if ((ret = ff_get_buffer(avctx, pic, 0)) < 0) |
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| 60 | return ret; |
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| 61 | |||
| 62 | pic->key_frame = 1; |
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| 63 | pic->pict_type = AV_PICTURE_TYPE_I; |
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| 64 | |||
| 65 | y = (uint16_t *)pic->data[0]; |
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| 66 | u = (uint16_t *)pic->data[1]; |
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| 67 | v = (uint16_t *)pic->data[2]; |
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| 68 | |||
| 69 | for (i = 0; i < avctx->height; i++) { |
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| 70 | for (j = 0; j < avctx->width; j++) { |
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| 71 | val = AV_RL32(src); |
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| 72 | |||
| 73 | u[j] = (val >> 2) & 0x3FF; |
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| 74 | y[j] = (val >> 12) & 0x3FF; |
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| 75 | v[j] = (val >> 22); |
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| 76 | |||
| 77 | src += 4; |
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| 78 | } |
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| 79 | |||
| 80 | y += pic->linesize[0] >> 1; |
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| 81 | u += pic->linesize[1] >> 1; |
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| 82 | v += pic->linesize[2] >> 1; |
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| 83 | } |
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| 84 | |||
| 85 | *got_frame = 1; |
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| 86 | |||
| 87 | return avpkt->size; |
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| 88 | } |
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| 89 | |||
| 90 | AVCodec ff_v410_decoder = { |
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| 91 | .name = "v410", |
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| 92 | .long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:4:4 10-bit"), |
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| 93 | .type = AVMEDIA_TYPE_VIDEO, |
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| 94 | .id = AV_CODEC_ID_V410, |
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| 95 | .init = v410_decode_init, |
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| 96 | .decode = v410_decode_frame, |
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| 97 | .capabilities = CODEC_CAP_DR1, |
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| 98 | }; |