| Line | Branch | Exec | Source |
|---|---|---|---|
| 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 "codec_internal.h" | ||
| 24 | #include "decode.h" | ||
| 25 | |||
| 26 | ✗ | static av_cold int y216_decode_init(AVCodecContext *avctx) | |
| 27 | { | ||
| 28 | ✗ | avctx->pix_fmt = AV_PIX_FMT_YUV422P16; | |
| 29 | ✗ | avctx->bits_per_raw_sample = 14; | |
| 30 | |||
| 31 | ✗ | return 0; | |
| 32 | } | ||
| 33 | |||
| 34 | ✗ | static int y216_decode_frame(AVCodecContext *avctx, AVFrame *pic, | |
| 35 | int *got_frame, AVPacket *avpkt) | ||
| 36 | { | ||
| 37 | ✗ | const uint16_t *src = (uint16_t *)avpkt->data; | |
| 38 | uint16_t *y, *u, *v; | ||
| 39 | ✗ | int aligned_width = FFALIGN(avctx->width, 4); | |
| 40 | int i, j, ret; | ||
| 41 | |||
| 42 | ✗ | if (avpkt->size < 4 * avctx->height * aligned_width) { | |
| 43 | ✗ | av_log(avctx, AV_LOG_ERROR, "Insufficient input data.\n"); | |
| 44 | ✗ | return AVERROR(EINVAL); | |
| 45 | } | ||
| 46 | |||
| 47 | ✗ | if ((ret = ff_get_buffer(avctx, pic, 0)) < 0) | |
| 48 | ✗ | return ret; | |
| 49 | |||
| 50 | ✗ | pic->flags |= AV_FRAME_FLAG_KEY; | |
| 51 | ✗ | pic->pict_type = AV_PICTURE_TYPE_I; | |
| 52 | |||
| 53 | ✗ | y = (uint16_t *)pic->data[0]; | |
| 54 | ✗ | u = (uint16_t *)pic->data[1]; | |
| 55 | ✗ | v = (uint16_t *)pic->data[2]; | |
| 56 | |||
| 57 | ✗ | for (i = 0; i < avctx->height; i++) { | |
| 58 | ✗ | for (j = 0; j < avctx->width >> 1; j++) { | |
| 59 | ✗ | u[ j ] = src[4 * j ] << 2 | src[4 * j ] >> 14; | |
| 60 | ✗ | y[2 * j ] = src[4 * j + 1] << 2 | src[4 * j + 1] >> 14; | |
| 61 | ✗ | v[ j ] = src[4 * j + 2] << 2 | src[4 * j + 2] >> 14; | |
| 62 | ✗ | y[2 * j + 1] = src[4 * j + 3] << 2 | src[4 * j + 3] >> 14; | |
| 63 | } | ||
| 64 | |||
| 65 | ✗ | y += pic->linesize[0] >> 1; | |
| 66 | ✗ | u += pic->linesize[1] >> 1; | |
| 67 | ✗ | v += pic->linesize[2] >> 1; | |
| 68 | ✗ | src += aligned_width << 1; | |
| 69 | } | ||
| 70 | |||
| 71 | ✗ | *got_frame = 1; | |
| 72 | |||
| 73 | ✗ | return avpkt->size; | |
| 74 | } | ||
| 75 | |||
| 76 | const FFCodec ff_targa_y216_decoder = { | ||
| 77 | .p.name = "targa_y216", | ||
| 78 | CODEC_LONG_NAME("Pinnacle TARGA CineWave YUV16"), | ||
| 79 | .p.type = AVMEDIA_TYPE_VIDEO, | ||
| 80 | .p.id = AV_CODEC_ID_TARGA_Y216, | ||
| 81 | .init = y216_decode_init, | ||
| 82 | FF_CODEC_DECODE_CB(y216_decode_frame), | ||
| 83 | .p.capabilities = AV_CODEC_CAP_DR1, | ||
| 84 | }; | ||
| 85 |