mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
83 lines
2.6 KiB
83 lines
2.6 KiB
/* |
|
* Pinnacle TARGA CineWave YUV16 decoder |
|
* Copyright (c) 2012 Carl Eugen Hoyos |
|
* |
|
* This file is part of FFmpeg. |
|
* |
|
* FFmpeg is free software; you can redistribute it and/or |
|
* modify it under the terms of the GNU Lesser General Public |
|
* License as published by the Free Software Foundation; either |
|
* version 2.1 of the License, or (at your option) any later version. |
|
* |
|
* FFmpeg is distributed in the hope that it will be useful, |
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|
* Lesser General Public License for more details. |
|
* |
|
* You should have received a copy of the GNU Lesser General Public |
|
* License along with FFmpeg; if not, write to the Free Software |
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
|
*/ |
|
|
|
#include "avcodec.h" |
|
#include "internal.h" |
|
|
|
static av_cold int y216_decode_init(AVCodecContext *avctx) |
|
{ |
|
avctx->pix_fmt = AV_PIX_FMT_YUV422P16; |
|
avctx->bits_per_raw_sample = 14; |
|
|
|
return 0; |
|
} |
|
|
|
static int y216_decode_frame(AVCodecContext *avctx, void *data, |
|
int *got_frame, AVPacket *avpkt) |
|
{ |
|
AVFrame *pic = data; |
|
const uint16_t *src = (uint16_t *)avpkt->data; |
|
uint16_t *y, *u, *v, aligned_width = FFALIGN(avctx->width, 4); |
|
int i, j, ret; |
|
|
|
if (avpkt->size < 4 * avctx->height * aligned_width) { |
|
av_log(avctx, AV_LOG_ERROR, "Insufficient input data.\n"); |
|
return AVERROR(EINVAL); |
|
} |
|
|
|
if ((ret = ff_get_buffer(avctx, pic, 0)) < 0) |
|
return ret; |
|
|
|
pic->key_frame = 1; |
|
pic->pict_type = AV_PICTURE_TYPE_I; |
|
|
|
y = (uint16_t *)pic->data[0]; |
|
u = (uint16_t *)pic->data[1]; |
|
v = (uint16_t *)pic->data[2]; |
|
|
|
for (i = 0; i < avctx->height; i++) { |
|
for (j = 0; j < avctx->width >> 1; j++) { |
|
u[ j ] = src[4 * j ] << 2 | src[4 * j ] >> 14; |
|
y[2 * j ] = src[4 * j + 1] << 2 | src[4 * j + 1] >> 14; |
|
v[ j ] = src[4 * j + 2] << 2 | src[4 * j + 2] >> 14; |
|
y[2 * j + 1] = src[4 * j + 3] << 2 | src[4 * j + 3] >> 14; |
|
} |
|
|
|
y += pic->linesize[0] >> 1; |
|
u += pic->linesize[1] >> 1; |
|
v += pic->linesize[2] >> 1; |
|
src += aligned_width << 1; |
|
} |
|
|
|
*got_frame = 1; |
|
|
|
return avpkt->size; |
|
} |
|
|
|
AVCodec ff_targa_y216_decoder = { |
|
.name = "targa_y216", |
|
.type = AVMEDIA_TYPE_VIDEO, |
|
.id = AV_CODEC_ID_TARGA_Y216, |
|
.init = y216_decode_init, |
|
.decode = y216_decode_frame, |
|
.capabilities = CODEC_CAP_DR1, |
|
.long_name = NULL_IF_CONFIG_SMALL("Pinnacle TARGA CineWave YUV16"), |
|
};
|
|
|