LCOV - code coverage report
Current view: top level - libavcodec - pnmenc.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 42 77 54.5 %
Date: 2017-12-12 11:08:38 Functions: 2 2 100.0 %

          Line data    Source code
       1             : /*
       2             :  * PNM 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 "libavutil/imgutils.h"
      23             : #include "libavutil/pixdesc.h"
      24             : #include "avcodec.h"
      25             : #include "internal.h"
      26             : 
      27         101 : static int pnm_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
      28             :                             const AVFrame *p, int *got_packet)
      29             : {
      30             :     uint8_t *bytestream, *bytestream_start, *bytestream_end;
      31             :     int i, h, h1, c, n, linesize, ret;
      32             :     uint8_t *ptr, *ptr1, *ptr2;
      33         101 :     int size = av_image_get_buffer_size(avctx->pix_fmt,
      34             :                                         avctx->width, avctx->height, 1);
      35             : 
      36         101 :     if ((ret = ff_alloc_packet2(avctx, pkt, size + 200, 0)) < 0)
      37           0 :         return ret;
      38             : 
      39         101 :     bytestream_start =
      40         101 :     bytestream       = pkt->data;
      41         101 :     bytestream_end   = pkt->data + pkt->size;
      42             : 
      43         101 :     h  = avctx->height;
      44         101 :     h1 = h;
      45         101 :     switch (avctx->pix_fmt) {
      46          25 :     case AV_PIX_FMT_MONOWHITE:
      47          25 :         c  = '4';
      48          25 :         n  = (avctx->width + 7) >> 3;
      49          25 :         break;
      50          38 :     case AV_PIX_FMT_GRAY8:
      51          38 :         c  = '5';
      52          38 :         n  = avctx->width;
      53          38 :         break;
      54           0 :     case AV_PIX_FMT_GRAY16BE:
      55           0 :         c  = '5';
      56           0 :         n  = avctx->width * 2;
      57           0 :         break;
      58          38 :     case AV_PIX_FMT_RGB24:
      59          38 :         c  = '6';
      60          38 :         n  = avctx->width * 3;
      61          38 :         break;
      62           0 :     case AV_PIX_FMT_RGB48BE:
      63           0 :         c  = '6';
      64           0 :         n  = avctx->width * 6;
      65           0 :         break;
      66           0 :     case AV_PIX_FMT_YUV420P:
      67           0 :         if (avctx->width & 1 || avctx->height & 1) {
      68           0 :             av_log(avctx, AV_LOG_ERROR, "pgmyuv needs even width and height\n");
      69           0 :             return AVERROR(EINVAL);
      70             :         }
      71           0 :         c  = '5';
      72           0 :         n  = avctx->width;
      73           0 :         h1 = (h * 3) / 2;
      74           0 :         break;
      75           0 :     case AV_PIX_FMT_YUV420P16BE:
      76           0 :         c  = '5';
      77           0 :         n  = avctx->width * 2;
      78           0 :         h1 = (h * 3) / 2;
      79           0 :         break;
      80           0 :     default:
      81           0 :         return -1;
      82             :     }
      83         101 :     snprintf(bytestream, bytestream_end - bytestream,
      84             :              "P%c\n%d %d\n", c, avctx->width, h1);
      85         101 :     bytestream += strlen(bytestream);
      86         101 :     if (avctx->pix_fmt != AV_PIX_FMT_MONOWHITE) {
      87          76 :         int maxdepth = (1 << av_pix_fmt_desc_get(avctx->pix_fmt)->comp[0].depth) - 1;
      88          76 :         snprintf(bytestream, bytestream_end - bytestream,
      89             :                  "%d\n", maxdepth);
      90          76 :         bytestream += strlen(bytestream);
      91             :     }
      92             : 
      93         101 :     ptr      = p->data[0];
      94         101 :     linesize = p->linesize[0];
      95       29189 :     for (i = 0; i < h; i++) {
      96       29088 :         memcpy(bytestream, ptr, n);
      97       29088 :         bytestream += n;
      98       29088 :         ptr        += linesize;
      99             :     }
     100             : 
     101         101 :     if (avctx->pix_fmt == AV_PIX_FMT_YUV420P || avctx->pix_fmt == AV_PIX_FMT_YUV420P16BE) {
     102           0 :         h >>= 1;
     103           0 :         n >>= 1;
     104           0 :         ptr1 = p->data[1];
     105           0 :         ptr2 = p->data[2];
     106           0 :         for (i = 0; i < h; i++) {
     107           0 :             memcpy(bytestream, ptr1, n);
     108           0 :             bytestream += n;
     109           0 :             memcpy(bytestream, ptr2, n);
     110           0 :             bytestream += n;
     111           0 :                 ptr1 += p->linesize[1];
     112           0 :                 ptr2 += p->linesize[2];
     113             :         }
     114             :     }
     115         101 :     pkt->size   = bytestream - bytestream_start;
     116         101 :     pkt->flags |= AV_PKT_FLAG_KEY;
     117         101 :     *got_packet = 1;
     118             : 
     119         101 :     return 0;
     120             : }
     121             : 
     122           5 : static av_cold int pnm_encode_init(AVCodecContext *avctx)
     123             : {
     124             : #if FF_API_CODED_FRAME
     125             : FF_DISABLE_DEPRECATION_WARNINGS
     126           5 :     avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
     127           5 :     avctx->coded_frame->key_frame = 1;
     128             : FF_ENABLE_DEPRECATION_WARNINGS
     129             : #endif
     130             : 
     131           5 :     return 0;
     132             : }
     133             : 
     134             : #if CONFIG_PGM_ENCODER
     135             : AVCodec ff_pgm_encoder = {
     136             :     .name           = "pgm",
     137             :     .long_name      = NULL_IF_CONFIG_SMALL("PGM (Portable GrayMap) image"),
     138             :     .type           = AVMEDIA_TYPE_VIDEO,
     139             :     .id             = AV_CODEC_ID_PGM,
     140             :     .init           = pnm_encode_init,
     141             :     .encode2        = pnm_encode_frame,
     142             :     .pix_fmts       = (const enum AVPixelFormat[]){
     143             :         AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY16BE, AV_PIX_FMT_NONE
     144             :     },
     145             : };
     146             : #endif
     147             : 
     148             : #if CONFIG_PGMYUV_ENCODER
     149             : AVCodec ff_pgmyuv_encoder = {
     150             :     .name           = "pgmyuv",
     151             :     .long_name      = NULL_IF_CONFIG_SMALL("PGMYUV (Portable GrayMap YUV) image"),
     152             :     .type           = AVMEDIA_TYPE_VIDEO,
     153             :     .id             = AV_CODEC_ID_PGMYUV,
     154             :     .init           = pnm_encode_init,
     155             :     .encode2        = pnm_encode_frame,
     156             :     .pix_fmts       = (const enum AVPixelFormat[]){
     157             :         AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV420P16BE, AV_PIX_FMT_NONE
     158             :     },
     159             : };
     160             : #endif
     161             : 
     162             : #if CONFIG_PPM_ENCODER
     163             : AVCodec ff_ppm_encoder = {
     164             :     .name           = "ppm",
     165             :     .long_name      = NULL_IF_CONFIG_SMALL("PPM (Portable PixelMap) image"),
     166             :     .type           = AVMEDIA_TYPE_VIDEO,
     167             :     .id             = AV_CODEC_ID_PPM,
     168             :     .init           = pnm_encode_init,
     169             :     .encode2        = pnm_encode_frame,
     170             :     .pix_fmts       = (const enum AVPixelFormat[]){
     171             :         AV_PIX_FMT_RGB24, AV_PIX_FMT_RGB48BE, AV_PIX_FMT_NONE
     172             :     },
     173             : };
     174             : #endif
     175             : 
     176             : #if CONFIG_PBM_ENCODER
     177             : AVCodec ff_pbm_encoder = {
     178             :     .name           = "pbm",
     179             :     .long_name      = NULL_IF_CONFIG_SMALL("PBM (Portable BitMap) image"),
     180             :     .type           = AVMEDIA_TYPE_VIDEO,
     181             :     .id             = AV_CODEC_ID_PBM,
     182             :     .init           = pnm_encode_init,
     183             :     .encode2        = pnm_encode_frame,
     184             :     .pix_fmts       = (const enum AVPixelFormat[]){ AV_PIX_FMT_MONOWHITE,
     185             :                                                   AV_PIX_FMT_NONE },
     186             : };
     187             : #endif

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