LCOV - code coverage report
Current view: top level - libavcodec - pamenc.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 65 86 75.6 %
Date: 2017-12-10 21:22:29 Functions: 2 2 100.0 %

          Line data    Source code
       1             : /*
       2             :  * PAM image format
       3             :  * Copyright (c) 2002, 2003 Fabrice Bellard
       4             :  *
       5             :  * This file is part of FFmpeg.
       6             :  *
       7             :  * FFmpeg is free software; you can redistribute it and/or
       8             :  * modify it under the terms of the GNU Lesser General Public
       9             :  * License as published by the Free Software Foundation; either
      10             :  * version 2.1 of the License, or (at your option) any later version.
      11             :  *
      12             :  * FFmpeg is distributed in the hope that it will be useful,
      13             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      14             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      15             :  * Lesser General Public License for more details.
      16             :  *
      17             :  * You should have received a copy of the GNU Lesser General Public
      18             :  * License along with FFmpeg; if not, write to the Free Software
      19             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      20             :  */
      21             : 
      22             : #include "avcodec.h"
      23             : #include "internal.h"
      24             : 
      25          78 : static int pam_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
      26             :                             const AVFrame *p, int *got_packet)
      27             : {
      28             :     uint8_t *bytestream_start, *bytestream, *bytestream_end;
      29             :     int i, h, w, n, linesize, depth, maxval, ret;
      30             :     const char *tuple_type;
      31             :     uint8_t *ptr;
      32             : 
      33          78 :     h = avctx->height;
      34          78 :     w = avctx->width;
      35          78 :     switch (avctx->pix_fmt) {
      36          13 :     case AV_PIX_FMT_MONOBLACK:
      37          13 :         n          = w;
      38          13 :         depth      = 1;
      39          13 :         maxval     = 1;
      40          13 :         tuple_type = "BLACKANDWHITE";
      41          13 :         break;
      42          13 :     case AV_PIX_FMT_GRAY8:
      43          13 :         n          = w;
      44          13 :         depth      = 1;
      45          13 :         maxval     = 255;
      46          13 :         tuple_type = "GRAYSCALE";
      47          13 :         break;
      48          13 :     case AV_PIX_FMT_GRAY16BE:
      49          13 :         n          = w * 2;
      50          13 :         depth      = 1;
      51          13 :         maxval     = 0xFFFF;
      52          13 :         tuple_type = "GRAYSCALE";
      53          13 :         break;
      54           0 :     case AV_PIX_FMT_GRAY8A:
      55           0 :         n          = w * 2;
      56           0 :         depth      = 2;
      57           0 :         maxval     = 255;
      58           0 :         tuple_type = "GRAYSCALE_ALPHA";
      59           0 :         break;
      60           0 :     case AV_PIX_FMT_YA16BE:
      61           0 :         n          = w * 4;
      62           0 :         depth      = 2;
      63           0 :         maxval     = 0xFFFF;
      64           0 :         tuple_type = "GRAYSCALE_ALPHA";
      65           0 :         break;
      66          13 :     case AV_PIX_FMT_RGB24:
      67          13 :         n          = w * 3;
      68          13 :         depth      = 3;
      69          13 :         maxval     = 255;
      70          13 :         tuple_type = "RGB";
      71          13 :         break;
      72          13 :     case AV_PIX_FMT_RGBA:
      73          13 :         n          = w * 4;
      74          13 :         depth      = 4;
      75          13 :         maxval     = 255;
      76          13 :         tuple_type = "RGB_ALPHA";
      77          13 :         break;
      78          13 :     case AV_PIX_FMT_RGB48BE:
      79          13 :         n          = w * 6;
      80          13 :         depth      = 3;
      81          13 :         maxval     = 0xFFFF;
      82          13 :         tuple_type = "RGB";
      83          13 :         break;
      84           0 :     case AV_PIX_FMT_RGBA64BE:
      85           0 :         n          = w * 8;
      86           0 :         depth      = 4;
      87           0 :         maxval     = 0xFFFF;
      88           0 :         tuple_type = "RGB_ALPHA";
      89           0 :         break;
      90           0 :     default:
      91           0 :         return -1;
      92             :     }
      93             : 
      94          78 :     if ((ret = ff_alloc_packet2(avctx, pkt, n*h + 200, 0)) < 0)
      95           0 :         return ret;
      96             : 
      97          78 :     bytestream_start =
      98          78 :     bytestream       = pkt->data;
      99          78 :     bytestream_end   = pkt->data + pkt->size;
     100             : 
     101          78 :     snprintf(bytestream, bytestream_end - bytestream,
     102             :              "P7\nWIDTH %d\nHEIGHT %d\nDEPTH %d\nMAXVAL %d\nTUPLTYPE %s\nENDHDR\n",
     103             :              w, h, depth, maxval, tuple_type);
     104          78 :     bytestream += strlen(bytestream);
     105             : 
     106          78 :     ptr      = p->data[0];
     107          78 :     linesize = p->linesize[0];
     108             : 
     109          78 :     if (avctx->pix_fmt == AV_PIX_FMT_MONOBLACK){
     110             :         int j;
     111        3757 :         for (i = 0; i < h; i++) {
     112     1321632 :             for (j = 0; j < w; j++)
     113     1317888 :                 *bytestream++ = ptr[j >> 3] >> (7 - j & 7) & 1;
     114        3744 :             ptr += linesize;
     115             :         }
     116             :     } else {
     117       18785 :         for (i = 0; i < h; i++) {
     118       18720 :             memcpy(bytestream, ptr, n);
     119       18720 :             bytestream += n;
     120       18720 :             ptr        += linesize;
     121             :         }
     122             :     }
     123             : 
     124          78 :     pkt->size   = bytestream - bytestream_start;
     125          78 :     pkt->flags |= AV_PKT_FLAG_KEY;
     126          78 :     *got_packet = 1;
     127          78 :     return 0;
     128             : }
     129             : 
     130           6 : static av_cold int pam_encode_init(AVCodecContext *avctx)
     131             : {
     132             : #if FF_API_CODED_FRAME
     133             : FF_DISABLE_DEPRECATION_WARNINGS
     134           6 :     avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
     135           6 :     avctx->coded_frame->key_frame = 1;
     136             : FF_ENABLE_DEPRECATION_WARNINGS
     137             : #endif
     138             : 
     139           6 :     return 0;
     140             : }
     141             : 
     142             : AVCodec ff_pam_encoder = {
     143             :     .name           = "pam",
     144             :     .long_name      = NULL_IF_CONFIG_SMALL("PAM (Portable AnyMap) image"),
     145             :     .type           = AVMEDIA_TYPE_VIDEO,
     146             :     .id             = AV_CODEC_ID_PAM,
     147             :     .init           = pam_encode_init,
     148             :     .encode2        = pam_encode_frame,
     149             :     .pix_fmts       = (const enum AVPixelFormat[]){
     150             :         AV_PIX_FMT_RGB24, AV_PIX_FMT_RGBA,
     151             :         AV_PIX_FMT_RGB48BE, AV_PIX_FMT_RGBA64BE,
     152             :         AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY8A,
     153             :         AV_PIX_FMT_GRAY16BE, AV_PIX_FMT_YA16BE,
     154             :         AV_PIX_FMT_MONOBLACK, AV_PIX_FMT_NONE
     155             :     },
     156             : };

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