1/* 2 * R210 decoder 3 * 4 * Copyright (c) 2009 Reimar Doeffinger <Reimar.Doeffinger@gmx.de> 5 * 6 * This file is part of FFmpeg. 7 * 8 * FFmpeg is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU Lesser General Public 10 * License as published by the Free Software Foundation; either 11 * version 2.1 of the License, or (at your option) any later version. 12 * 13 * FFmpeg is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * Lesser General Public License for more details. 17 * 18 * You should have received a copy of the GNU Lesser General Public 19 * License along with FFmpeg; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 21 */ 22 23#include "avcodec.h" 24#include "libavutil/bswap.h" 25 26static av_cold int decode_init(AVCodecContext *avctx) 27{ 28 avctx->pix_fmt = PIX_FMT_RGB48; 29 avctx->bits_per_raw_sample = 10; 30 31 avctx->coded_frame = avcodec_alloc_frame(); 32 33 return 0; 34} 35 36static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, 37 AVPacket *avpkt) 38{ 39 int h, w; 40 AVFrame *pic = avctx->coded_frame; 41 const uint32_t *src = (const uint32_t *)avpkt->data; 42 int aligned_width = FFALIGN(avctx->width, 64); 43 uint8_t *dst_line; 44 45 if (pic->data[0]) 46 avctx->release_buffer(avctx, pic); 47 48 if (avpkt->size < 4 * aligned_width * avctx->height) { 49 av_log(avctx, AV_LOG_ERROR, "packet too small\n"); 50 return -1; 51 } 52 53 pic->reference = 0; 54 if (avctx->get_buffer(avctx, pic) < 0) 55 return -1; 56 57 pic->pict_type = FF_I_TYPE; 58 pic->key_frame = 1; 59 dst_line = pic->data[0]; 60 61 for (h = 0; h < avctx->height; h++) { 62 uint16_t *dst = (uint16_t *)dst_line; 63 for (w = 0; w < avctx->width; w++) { 64 uint32_t pixel = be2me_32(*src++); 65 uint16_t r, g, b; 66 b = pixel << 6; 67 g = (pixel >> 4) & 0xffc0; 68 r = (pixel >> 14) & 0xffc0; 69 *dst++ = r | (r >> 10); 70 *dst++ = g | (g >> 10); 71 *dst++ = b | (b >> 10); 72 } 73 src += aligned_width - avctx->width; 74 dst_line += pic->linesize[0]; 75 } 76 77 *data_size = sizeof(AVFrame); 78 *(AVFrame*)data = *avctx->coded_frame; 79 80 return avpkt->size; 81} 82 83static av_cold int decode_close(AVCodecContext *avctx) 84{ 85 AVFrame *pic = avctx->coded_frame; 86 if (pic->data[0]) 87 avctx->release_buffer(avctx, pic); 88 av_freep(&avctx->coded_frame); 89 90 return 0; 91} 92 93AVCodec r210_decoder = { 94 "r210", 95 AVMEDIA_TYPE_VIDEO, 96 CODEC_ID_R210, 97 0, 98 decode_init, 99 NULL, 100 decode_close, 101 decode_frame, 102 CODEC_CAP_DR1, 103 .long_name = NULL_IF_CONFIG_SMALL("Uncompressed RGB 10-bit"), 104}; 105