repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * Pinnacle TARGA CineWave YUV16 decoder | |
| 3 | * Copyright (c) 2012 Carl Eugen Hoyos | |
| 4 | * | |
| 5 | * This file is part of FFmpeg. | |
| 6 | * | |
| 7 | * FFmpeg is free software; you can redistribute it and/or | |
| 8 | * modify it under the terms of the GNU Lesser General Public | |
| 9 | * License as published by the Free Software Foundation; either | |
| 10 | * version 2.1 of the License, or (at your option) any later version. | |
| 11 | * | |
| 12 | * FFmpeg is distributed in the hope that it will be useful, | |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 | * Lesser General Public License for more details. | |
| 16 | * | |
| 17 | * You should have received a copy of the GNU Lesser General Public | |
| 18 | * License along with FFmpeg; if not, write to the Free Software | |
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 20 | */ | |
| 21 | ||
| 22 | #include "avcodec.h" | |
| 23 | #include "internal.h" | |
| 24 | ||
| 25 | static av_cold int y216_decode_init(AVCodecContext *avctx) | |
| 26 | { | |
| 27 | avctx->pix_fmt = AV_PIX_FMT_YUV422P16; | |
| 28 | avctx->bits_per_raw_sample = 14; | |
| 29 | ||
| 30 | return 0; | |
| 31 | } | |
| 32 | ||
| 33 | static int y216_decode_frame(AVCodecContext *avctx, void *data, | |
| 34 | int *got_frame, AVPacket *avpkt) | |
| 35 | { | |
| 36 | AVFrame *pic = data; | |
| 37 | const uint16_t *src = (uint16_t *)avpkt->data; | |
| 38 | uint16_t *y, *u, *v, aligned_width = FFALIGN(avctx->width, 4); | |
| 39 | int i, j, ret; | |
| 40 | ||
| 41 | if (avpkt->size < 4 * avctx->height * aligned_width) { | |
| 42 | av_log(avctx, AV_LOG_ERROR, "Insufficient input data.\n"); | |
| 43 | return AVERROR(EINVAL); | |
| 44 | } | |
| 45 | ||
| 46 | if ((ret = ff_get_buffer(avctx, pic, 0)) < 0) | |
| 47 | return ret; | |
| 48 | ||
| 49 | pic->key_frame = 1; | |
| 50 | pic->pict_type = AV_PICTURE_TYPE_I; | |
| 51 | ||
| 52 | y = (uint16_t *)pic->data[0]; | |
| 53 | u = (uint16_t *)pic->data[1]; | |
| 54 | v = (uint16_t *)pic->data[2]; | |
| 55 | ||
| 56 | for (i = 0; i < avctx->height; i++) { | |
| 57 | for (j = 0; j < avctx->width >> 1; j++) { | |
| 58 | u[ j ] = src[4 * j ] << 2 | src[4 * j ] >> 14; | |
| 59 | y[2 * j ] = src[4 * j + 1] << 2 | src[4 * j + 1] >> 14; | |
| 60 | v[ j ] = src[4 * j + 2] << 2 | src[4 * j + 2] >> 14; | |
| 61 | y[2 * j + 1] = src[4 * j + 3] << 2 | src[4 * j + 3] >> 14; | |
| 62 | } | |
| 63 | ||
| 64 | y += pic->linesize[0] >> 1; | |
| 65 | u += pic->linesize[1] >> 1; | |
| 66 | v += pic->linesize[2] >> 1; | |
| 67 | src += aligned_width << 1; | |
| 68 | } | |
| 69 | ||
| 70 | *got_frame = 1; | |
| 71 | ||
| 72 | return avpkt->size; | |
| 73 | } | |
| 74 | ||
| 75 | AVCodec ff_targa_y216_decoder = { | |
| 76 | .name = "targa_y216", | |
| 77 | .long_name = NULL_IF_CONFIG_SMALL("Pinnacle TARGA CineWave YUV16"), | |
| 78 | .type = AVMEDIA_TYPE_VIDEO, | |
| 79 | .id = AV_CODEC_ID_TARGA_Y216, | |
| 80 | .init = y216_decode_init, | |
| 81 | .decode = y216_decode_frame, | |
| 82 | .capabilities = CODEC_CAP_DR1, | |
| 83 | }; |