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 "internal.h" 25#include "libavutil/bswap.h" 26#include "libavutil/common.h" 27 28static av_cold int decode_init(AVCodecContext *avctx) 29{ 30 avctx->pix_fmt = AV_PIX_FMT_RGB48; 31 avctx->bits_per_raw_sample = 10; 32 33 return 0; 34} 35 36static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, 37 AVPacket *avpkt) 38{ 39 int h, w, ret; 40 AVFrame *pic = data; 41 const uint32_t *src = (const uint32_t *)avpkt->data; 42 int aligned_width = FFALIGN(avctx->width, 43 avctx->codec_id == AV_CODEC_ID_R10K ? 1 : 64); 44 uint8_t *dst_line; 45 46 if (avpkt->size < 4 * aligned_width * avctx->height) { 47 av_log(avctx, AV_LOG_ERROR, "packet too small\n"); 48 return AVERROR_INVALIDDATA; 49 } 50 51 if ((ret = ff_get_buffer(avctx, pic, 0)) < 0) 52 return ret; 53 54 pic->pict_type = AV_PICTURE_TYPE_I; 55 pic->key_frame = 1; 56 dst_line = pic->data[0]; 57 58 for (h = 0; h < avctx->height; h++) { 59 uint16_t *dst = (uint16_t *)dst_line; 60 for (w = 0; w < avctx->width; w++) { 61 uint32_t pixel; 62 uint16_t r, g, b; 63 if (avctx->codec_id==AV_CODEC_ID_AVRP) { 64 pixel = av_le2ne32(*src++); 65 } else { 66 pixel = av_be2ne32(*src++); 67 } 68 if (avctx->codec_id==AV_CODEC_ID_R210) { 69 b = pixel << 6; 70 g = (pixel >> 4) & 0xffc0; 71 r = (pixel >> 14) & 0xffc0; 72 } else { 73 b = pixel << 4; 74 g = (pixel >> 6) & 0xffc0; 75 r = (pixel >> 16) & 0xffc0; 76 } 77 *dst++ = r | (r >> 10); 78 *dst++ = g | (g >> 10); 79 *dst++ = b | (b >> 10); 80 } 81 src += aligned_width - avctx->width; 82 dst_line += pic->linesize[0]; 83 } 84 85 *got_frame = 1; 86 87 return avpkt->size; 88} 89 90#if CONFIG_R210_DECODER 91AVCodec ff_r210_decoder = { 92 .name = "r210", 93 .long_name = NULL_IF_CONFIG_SMALL("Uncompressed RGB 10-bit"), 94 .type = AVMEDIA_TYPE_VIDEO, 95 .id = AV_CODEC_ID_R210, 96 .init = decode_init, 97 .decode = decode_frame, 98 .capabilities = CODEC_CAP_DR1, 99}; 100#endif 101#if CONFIG_R10K_DECODER 102AVCodec ff_r10k_decoder = { 103 .name = "r10k", 104 .long_name = NULL_IF_CONFIG_SMALL("AJA Kona 10-bit RGB Codec"), 105 .type = AVMEDIA_TYPE_VIDEO, 106 .id = AV_CODEC_ID_R10K, 107 .init = decode_init, 108 .decode = decode_frame, 109 .capabilities = CODEC_CAP_DR1, 110}; 111#endif 112#if CONFIG_AVRP_DECODER 113AVCodec ff_avrp_decoder = { 114 .name = "avrp", 115 .long_name = NULL_IF_CONFIG_SMALL("Avid 1:1 10-bit RGB Packer"), 116 .type = AVMEDIA_TYPE_VIDEO, 117 .id = AV_CODEC_ID_AVRP, 118 .init = decode_init, 119 .decode = decode_frame, 120 .capabilities = CODEC_CAP_DR1, 121}; 122#endif 123