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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /* |
| 2 | * Pinnacle TARGA CineWave YUV16 decoder |
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| 3 | * Copyright (c) 2012 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 y216_decode_init(AVCodecContext *avctx) |
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| 26 | { |
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| 27 | avctx->pix_fmt = AV_PIX_FMT_YUV422P16; |
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| 28 | avctx->bits_per_raw_sample = 14; |
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| 29 | |||
| 30 | return 0; |
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| 31 | } |
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| 32 | |||
| 33 | static int y216_decode_frame(AVCodecContext *avctx, void *data, |
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| 34 | int *got_frame, AVPacket *avpkt) |
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| 35 | { |
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| 36 | AVFrame *pic = data; |
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| 37 | const uint16_t *src = (uint16_t *)avpkt->data; |
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| 38 | uint16_t *y, *u, *v, aligned_width = FFALIGN(avctx->width, 4); |
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| 39 | int i, j, ret; |
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| 40 | |||
| 41 | if (avpkt->size < 4 * avctx->height * aligned_width) { |
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| 42 | av_log(avctx, AV_LOG_ERROR, "Insufficient input data.\n"); |
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| 43 | return AVERROR(EINVAL); |
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| 44 | } |
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| 45 | |||
| 46 | if ((ret = ff_get_buffer(avctx, pic, 0)) < 0) |
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| 47 | return ret; |
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| 48 | |||
| 49 | pic->key_frame = 1; |
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| 50 | pic->pict_type = AV_PICTURE_TYPE_I; |
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| 51 | |||
| 52 | y = (uint16_t *)pic->data[0]; |
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| 53 | u = (uint16_t *)pic->data[1]; |
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| 54 | v = (uint16_t *)pic->data[2]; |
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| 55 | |||
| 56 | for (i = 0; i < avctx->height; i++) { |
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| 57 | for (j = 0; j < avctx->width >> 1; j++) { |
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| 58 | u[ j ] = src[4 * j ] << 2 | src[4 * j ] >> 14; |
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| 59 | y[2 * j ] = src[4 * j + 1] << 2 | src[4 * j + 1] >> 14; |
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| 60 | v[ j ] = src[4 * j + 2] << 2 | src[4 * j + 2] >> 14; |
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| 61 | y[2 * j + 1] = src[4 * j + 3] << 2 | src[4 * j + 3] >> 14; |
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| 62 | } |
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| 63 | |||
| 64 | y += pic->linesize[0] >> 1; |
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| 65 | u += pic->linesize[1] >> 1; |
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| 66 | v += pic->linesize[2] >> 1; |
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| 67 | src += aligned_width << 1; |
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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_targa_y216_decoder = { |
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| 76 | .name = "targa_y216", |
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| 77 | .long_name = NULL_IF_CONFIG_SMALL("Pinnacle TARGA CineWave YUV16"), |
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| 78 | .type = AVMEDIA_TYPE_VIDEO, |
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| 79 | .id = AV_CODEC_ID_TARGA_Y216, |
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| 80 | .init = y216_decode_init, |
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| 81 | .decode = y216_decode_frame, |
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| 82 | .capabilities = CODEC_CAP_DR1, |
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| 83 | }; |