LCOV - code coverage report
Current view: top level - libavcodec - r210dec.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 33 42 78.6 %
Date: 2017-12-10 21:22:29 Functions: 2 2 100.0 %

          Line data    Source code
       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             : 
      28          10 : static av_cold int decode_init(AVCodecContext *avctx)
      29             : {
      30          10 :     if ((avctx->codec_tag & 0xFFFFFF) == MKTAG('r', '1', '0', 0)) {
      31           0 :         avctx->pix_fmt = AV_PIX_FMT_BGR48;
      32             :     } else {
      33          10 :         avctx->pix_fmt = AV_PIX_FMT_RGB48;
      34             :     }
      35          10 :     avctx->bits_per_raw_sample = 10;
      36             : 
      37          10 :     return 0;
      38             : }
      39             : 
      40         203 : static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
      41             :                         AVPacket *avpkt)
      42             : {
      43             :     int h, w, ret;
      44         203 :     AVFrame *pic = data;
      45         203 :     const uint32_t *src = (const uint32_t *)avpkt->data;
      46         203 :     int aligned_width = FFALIGN(avctx->width,
      47             :                                 avctx->codec_id == AV_CODEC_ID_R10K ? 1 : 64);
      48             :     uint8_t *dst_line;
      49         203 :     int r10 = (avctx->codec_tag & 0xFFFFFF) == MKTAG('r', '1', '0', 0);
      50         406 :     int le = avctx->codec_tag == MKTAG('R', '1', '0', 'k') &&
      51         203 :              avctx->extradata_size >= 12 && !memcmp(&avctx->extradata[4], "DpxE", 4) &&
      52           0 :              !avctx->extradata[11];
      53             : 
      54         203 :     if (avpkt->size < 4 * aligned_width * avctx->height) {
      55           0 :         av_log(avctx, AV_LOG_ERROR, "packet too small\n");
      56           0 :         return AVERROR_INVALIDDATA;
      57             :     }
      58             : 
      59         203 :     if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
      60           0 :         return ret;
      61             : 
      62         203 :     pic->pict_type = AV_PICTURE_TYPE_I;
      63         203 :     pic->key_frame = 1;
      64         203 :     dst_line = pic->data[0];
      65             : 
      66       46543 :     for (h = 0; h < avctx->height; h++) {
      67       46340 :         uint16_t *dst = (uint16_t *)dst_line;
      68    16232140 :         for (w = 0; w < avctx->width; w++) {
      69             :             uint32_t pixel;
      70             :             uint16_t r, g, b;
      71    16185800 :             if (avctx->codec_id == AV_CODEC_ID_AVRP || r10 || le) {
      72           0 :                 pixel = av_le2ne32(*src++);
      73             :             } else {
      74    16185800 :                 pixel = av_be2ne32(*src++);
      75             :             }
      76    16185800 :             if (avctx->codec_id == AV_CODEC_ID_R210 || r10) {
      77    16185800 :                 b =  pixel <<  6;
      78    16185800 :                 g = (pixel >>  4) & 0xffc0;
      79    16185800 :                 r = (pixel >> 14) & 0xffc0;
      80             :             } else {
      81           0 :                 b = (pixel <<  4) & 0xffc0;
      82           0 :                 g = (pixel >>  6) & 0xffc0;
      83           0 :                 r = (pixel >> 16) & 0xffc0;
      84             :             }
      85    16185800 :             *dst++ = r | (r >> 10);
      86    16185800 :             *dst++ = g | (g >> 10);
      87    16185800 :             *dst++ = b | (b >> 10);
      88             :         }
      89       46340 :         src += aligned_width - avctx->width;
      90       46340 :         dst_line += pic->linesize[0];
      91             :     }
      92             : 
      93         203 :     *got_frame      = 1;
      94             : 
      95         203 :     return avpkt->size;
      96             : }
      97             : 
      98             : #if CONFIG_R210_DECODER
      99             : AVCodec ff_r210_decoder = {
     100             :     .name           = "r210",
     101             :     .long_name      = NULL_IF_CONFIG_SMALL("Uncompressed RGB 10-bit"),
     102             :     .type           = AVMEDIA_TYPE_VIDEO,
     103             :     .id             = AV_CODEC_ID_R210,
     104             :     .init           = decode_init,
     105             :     .decode         = decode_frame,
     106             :     .capabilities   = AV_CODEC_CAP_DR1,
     107             :     .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
     108             : };
     109             : #endif
     110             : #if CONFIG_R10K_DECODER
     111             : AVCodec ff_r10k_decoder = {
     112             :     .name           = "r10k",
     113             :     .long_name      = NULL_IF_CONFIG_SMALL("AJA Kona 10-bit RGB Codec"),
     114             :     .type           = AVMEDIA_TYPE_VIDEO,
     115             :     .id             = AV_CODEC_ID_R10K,
     116             :     .init           = decode_init,
     117             :     .decode         = decode_frame,
     118             :     .capabilities   = AV_CODEC_CAP_DR1,
     119             :     .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
     120             : };
     121             : #endif
     122             : #if CONFIG_AVRP_DECODER
     123             : AVCodec ff_avrp_decoder = {
     124             :     .name           = "avrp",
     125             :     .long_name      = NULL_IF_CONFIG_SMALL("Avid 1:1 10-bit RGB Packer"),
     126             :     .type           = AVMEDIA_TYPE_VIDEO,
     127             :     .id             = AV_CODEC_ID_AVRP,
     128             :     .init           = decode_init,
     129             :     .decode         = decode_frame,
     130             :     .capabilities   = AV_CODEC_CAP_DR1,
     131             :     .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
     132             : };
     133             : #endif

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