Subversion Repositories Kolibri OS

Rev

Blame | Last modification | View Log | RSS feed

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