1/* 2 * R210 decoder 3 * 4 * Copyright (c) 2009 Reimar Doeffinger <Reimar.Doeffinger@gmx.de> 5 * 6 * This file is part of Libav. 7 * 8 * Libav 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 * Libav 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 Libav; 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 = AV_PICTURE_TYPE_I; 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 = av_be2ne32(*src++); 65 uint16_t r, g, b; 66 if (avctx->codec_id==CODEC_ID_R210) { 67 b = pixel << 6; 68 g = (pixel >> 4) & 0xffc0; 69 r = (pixel >> 14) & 0xffc0; 70 } else { 71 b = pixel << 4; 72 g = (pixel >> 6) & 0xffc0; 73 r = (pixel >> 16) & 0xffc0; 74 } 75 *dst++ = r | (r >> 10); 76 *dst++ = g | (g >> 10); 77 *dst++ = b | (b >> 10); 78 } 79 src += aligned_width - avctx->width; 80 dst_line += pic->linesize[0]; 81 } 82 83 *data_size = sizeof(AVFrame); 84 *(AVFrame*)data = *avctx->coded_frame; 85 86 return avpkt->size; 87} 88 89static av_cold int decode_close(AVCodecContext *avctx) 90{ 91 AVFrame *pic = avctx->coded_frame; 92 if (pic->data[0]) 93 avctx->release_buffer(avctx, pic); 94 av_freep(&avctx->coded_frame); 95 96 return 0; 97} 98 99#if CONFIG_R210_DECODER 100AVCodec ff_r210_decoder = { 101 .name = "r210", 102 .type = AVMEDIA_TYPE_VIDEO, 103 .id = CODEC_ID_R210, 104 .init = decode_init, 105 .close = decode_close, 106 .decode = decode_frame, 107 .capabilities = CODEC_CAP_DR1, 108 .long_name = NULL_IF_CONFIG_SMALL("Uncompressed RGB 10-bit"), 109}; 110#endif 111#if CONFIG_R10K_DECODER 112AVCodec ff_r10k_decoder = { 113 .name = "r10k", 114 .type = AVMEDIA_TYPE_VIDEO, 115 .id = CODEC_ID_R10K, 116 .init = decode_init, 117 .close = decode_close, 118 .decode = decode_frame, 119 .capabilities = CODEC_CAP_DR1, 120 .long_name = NULL_IF_CONFIG_SMALL("AJA Kona 10-bit RGB Codec"), 121}; 122#endif 123