LCOV - code coverage report
Current view: top level - src/libavcodec - avuienc.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 34 41 82.9 %
Date: 2017-05-26 21:11:57 Functions: 2 2 100.0 %

          Line data    Source code
       1             : /*
       2             :  * AVID Meridien encoder
       3             :  *
       4             :  * Copyright (c) 2012 Carl Eugen Hoyos
       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/intreadwrite.h"
      26             : 
      27           3 : static av_cold int avui_encode_init(AVCodecContext *avctx)
      28             : {
      29           3 :     if (avctx->width != 720 || avctx->height != 486 && avctx->height != 576) {
      30           0 :         av_log(avctx, AV_LOG_ERROR, "Only 720x486 and 720x576 are supported.\n");
      31           0 :         return AVERROR(EINVAL);
      32             :     }
      33           3 :     if (!(avctx->extradata = av_mallocz(144 + AV_INPUT_BUFFER_PADDING_SIZE)))
      34           0 :         return AVERROR(ENOMEM);
      35           3 :     avctx->extradata_size = 144;
      36           3 :     memcpy(avctx->extradata, "\0\0\0\x18""APRGAPRG0001", 16);
      37           3 :     if (avctx->field_order > AV_FIELD_PROGRESSIVE) {
      38           0 :         avctx->extradata[19] = 2;
      39             :     } else {
      40           3 :         avctx->extradata[19] = 1;
      41             :     }
      42           3 :     memcpy(avctx->extradata + 24, "\0\0\0\x78""ARESARES0001""\0\0\0\x98", 20);
      43           3 :     AV_WB32(avctx->extradata + 44, avctx->width);
      44           3 :     AV_WB32(avctx->extradata + 48, avctx->height);
      45           3 :     memcpy(avctx->extradata + 52, "\0\0\0\x1\0\0\0\x20\0\0\0\x2", 12);
      46             : 
      47             : 
      48           3 :     return 0;
      49             : }
      50             : 
      51         150 : static int avui_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
      52             :                              const AVFrame *pic, int *got_packet)
      53             : {
      54             :     uint8_t *dst;
      55             :     int i, j, skip, ret, size, interlaced;
      56             : 
      57         150 :     interlaced = avctx->field_order > AV_FIELD_PROGRESSIVE;
      58             : 
      59         150 :     if (avctx->height == 486) {
      60           0 :         skip = 10;
      61             :     } else {
      62         150 :         skip = 16;
      63             :     }
      64         150 :     size = 2 * avctx->width * (avctx->height + skip) + 8 * interlaced;
      65         150 :     if ((ret = ff_alloc_packet2(avctx, pkt, size, size)) < 0)
      66           0 :         return ret;
      67         150 :     dst = pkt->data;
      68         150 :     if (!interlaced) {
      69         150 :         memset(dst, 0, avctx->width * skip);
      70         150 :         dst += avctx->width * skip;
      71             :     }
      72             : 
      73         300 :     for (i = 0; i <= interlaced; i++) {
      74             :         uint8_t *src;
      75         150 :         if (interlaced && avctx->height == 486) {
      76           0 :             src = pic->data[0] + (1 - i) * pic->linesize[0];
      77             :         } else {
      78         150 :             src = pic->data[0] + i * pic->linesize[0];
      79             :         }
      80         150 :         memset(dst, 0, avctx->width * skip + 4 * i);
      81         150 :         dst += avctx->width * skip + 4 * i;
      82       86550 :         for (j = 0; j < avctx->height; j += interlaced + 1) {
      83       86400 :             memcpy(dst, src, avctx->width * 2);
      84       86400 :             src += (interlaced + 1) * pic->linesize[0];
      85       86400 :             dst += avctx->width * 2;
      86             :         }
      87             :     }
      88             : 
      89         150 :     pkt->flags |= AV_PKT_FLAG_KEY;
      90         150 :     *got_packet = 1;
      91         150 :     return 0;
      92             : }
      93             : 
      94             : AVCodec ff_avui_encoder = {
      95             :     .name         = "avui",
      96             :     .long_name    = NULL_IF_CONFIG_SMALL("Avid Meridien Uncompressed"),
      97             :     .type         = AVMEDIA_TYPE_VIDEO,
      98             :     .id           = AV_CODEC_ID_AVUI,
      99             :     .init         = avui_encode_init,
     100             :     .encode2      = avui_encode_frame,
     101             :     .capabilities = AV_CODEC_CAP_EXPERIMENTAL | AV_CODEC_CAP_INTRA_ONLY,
     102             :     .pix_fmts     = (const enum AVPixelFormat[]){ AV_PIX_FMT_UYVY422, AV_PIX_FMT_NONE },
     103             : };

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