2 * Pinnacle TARGA CineWave YUV16 decoder
3 * Copyright (c) 2012 Carl Eugen Hoyos
5 * This file is part of FFmpeg.
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.
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.
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
25 static av_cold int y216_decode_init(AVCodecContext *avctx)
27 avctx->pix_fmt = AV_PIX_FMT_YUV422P16;
28 avctx->bits_per_raw_sample = 14;
33 static int y216_decode_frame(AVCodecContext *avctx, void *data,
34 int *got_frame, AVPacket *avpkt)
37 const uint16_t *src = (uint16_t *)avpkt->data;
38 uint16_t *y, *u, *v, aligned_width = FFALIGN(avctx->width, 4);
41 if (avpkt->size < 4 * avctx->height * aligned_width) {
42 av_log(avctx, AV_LOG_ERROR, "Insufficient input data.\n");
43 return AVERROR(EINVAL);
46 if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
50 pic->pict_type = AV_PICTURE_TYPE_I;
52 y = (uint16_t *)pic->data[0];
53 u = (uint16_t *)pic->data[1];
54 v = (uint16_t *)pic->data[2];
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;
64 y += pic->linesize[0] >> 1;
65 u += pic->linesize[1] >> 1;
66 v += pic->linesize[2] >> 1;
67 src += aligned_width << 1;
75 static av_cold int y216_decode_close(AVCodecContext *avctx)
81 AVCodec ff_targa_y216_decoder = {
83 .type = AVMEDIA_TYPE_VIDEO,
84 .id = AV_CODEC_ID_TARGA_Y216,
85 .init = y216_decode_init,
86 .decode = y216_decode_frame,
87 .close = y216_decode_close,
88 .capabilities = CODEC_CAP_DR1,
89 .long_name = NULL_IF_CONFIG_SMALL("Pinnacle TARGA CineWave YUV16"),