LCOV - code coverage report
Current view: top level - libavcodec - dpxenc.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 125 158 79.1 %
Date: 2017-12-16 21:16:39 Functions: 7 7 100.0 %

          Line data    Source code
       1             : /*
       2             :  * DPX (.dpx) image encoder
       3             :  * Copyright (c) 2011 Peter Ross <pross@xvid.org>
       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/common.h"
      23             : #include "libavutil/intreadwrite.h"
      24             : #include "libavutil/imgutils.h"
      25             : #include "avcodec.h"
      26             : #include "internal.h"
      27             : 
      28             : typedef struct DPXContext {
      29             :     int big_endian;
      30             :     int bits_per_component;
      31             :     int num_components;
      32             :     int descriptor;
      33             :     int planar;
      34             : } DPXContext;
      35             : 
      36           6 : static av_cold int encode_init(AVCodecContext *avctx)
      37             : {
      38           6 :     DPXContext *s = avctx->priv_data;
      39           6 :     const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
      40             : 
      41           6 :     s->big_endian         = !!(desc->flags & AV_PIX_FMT_FLAG_BE);
      42           6 :     s->bits_per_component = desc->comp[0].depth;
      43           6 :     s->num_components     = desc->nb_components;
      44           6 :     s->descriptor         = (desc->flags & AV_PIX_FMT_FLAG_ALPHA) ? 51 : 50;
      45           6 :     s->planar             = !!(desc->flags & AV_PIX_FMT_FLAG_PLANAR);
      46             : 
      47           6 :     switch (avctx->pix_fmt) {
      48           0 :     case AV_PIX_FMT_ABGR:
      49           0 :         s->descriptor = 52;
      50           0 :         break;
      51           0 :     case AV_PIX_FMT_GRAY16BE:
      52             :     case AV_PIX_FMT_GRAY16LE:
      53             :     case AV_PIX_FMT_GRAY8:
      54           0 :         s->descriptor = 6;
      55           0 :         break;
      56           4 :     case AV_PIX_FMT_GBRP10BE:
      57             :     case AV_PIX_FMT_GBRP10LE:
      58             :     case AV_PIX_FMT_GBRP12BE:
      59             :     case AV_PIX_FMT_GBRP12LE:
      60             :     case AV_PIX_FMT_RGB24:
      61             :     case AV_PIX_FMT_RGBA64BE:
      62             :     case AV_PIX_FMT_RGBA64LE:
      63             :     case AV_PIX_FMT_RGBA:
      64           4 :         break;
      65           2 :     case AV_PIX_FMT_RGB48LE:
      66             :     case AV_PIX_FMT_RGB48BE:
      67           2 :         if (avctx->bits_per_raw_sample)
      68           1 :             s->bits_per_component = avctx->bits_per_raw_sample;
      69           2 :         break;
      70           0 :     default:
      71           0 :         av_log(avctx, AV_LOG_INFO, "unsupported pixel format\n");
      72           0 :         return -1;
      73             :     }
      74             : 
      75           6 :     return 0;
      76             : }
      77             : 
      78     3953898 : static av_always_inline void write16_internal(int big_endian, void *p, int value)
      79             : {
      80     3953898 :     if (big_endian) AV_WB16(p, value);
      81     3953898 :     else            AV_WL16(p, value);
      82     3953898 : }
      83             : 
      84     2636634 : static av_always_inline void write32_internal(int big_endian, void *p, int value)
      85             : {
      86     2636634 :     if (big_endian) AV_WB32(p, value);
      87     2636634 :     else            AV_WL32(p, value);
      88     2636634 : }
      89             : 
      90             : #define write16(p, value) write16_internal(s->big_endian, p, value)
      91             : #define write32(p, value) write32_internal(s->big_endian, p, value)
      92             : 
      93          13 : static void encode_rgb48_10bit(AVCodecContext *avctx, const AVFrame *pic,
      94             :                                uint8_t *dst)
      95             : {
      96          13 :     DPXContext *s = avctx->priv_data;
      97          13 :     const uint8_t *src = pic->data[0];
      98             :     int x, y;
      99             : 
     100        3757 :     for (y = 0; y < avctx->height; y++) {
     101     1321632 :         for (x = 0; x < avctx->width; x++) {
     102             :             int value;
     103     1317888 :             if (s->big_endian) {
     104           0 :                 value = ((AV_RB16(src + 6*x + 4) & 0xFFC0U) >> 4)
     105           0 :                       | ((AV_RB16(src + 6*x + 2) & 0xFFC0U) << 6)
     106           0 :                       | ((AV_RB16(src + 6*x + 0) & 0xFFC0U) << 16);
     107             :             } else {
     108     2635776 :                 value = ((AV_RL16(src + 6*x + 4) & 0xFFC0U) >> 4)
     109     1317888 :                       | ((AV_RL16(src + 6*x + 2) & 0xFFC0U) << 6)
     110     1317888 :                       | ((AV_RL16(src + 6*x + 0) & 0xFFC0U) << 16);
     111             :             }
     112     1317888 :             write32(dst, value);
     113     1317888 :             dst += 4;
     114             :         }
     115        3744 :         src += pic->linesize[0];
     116             :     }
     117          13 : }
     118             : 
     119          13 : static void encode_gbrp10(AVCodecContext *avctx, const AVFrame *pic, uint8_t *dst)
     120             : {
     121          13 :     DPXContext *s = avctx->priv_data;
     122          13 :     const uint8_t *src[3] = {pic->data[0], pic->data[1], pic->data[2]};
     123             :     int x, y, i;
     124             : 
     125        3757 :     for (y = 0; y < avctx->height; y++) {
     126     1321632 :         for (x = 0; x < avctx->width; x++) {
     127             :             int value;
     128     1317888 :             if (s->big_endian) {
     129           0 :                 value = (AV_RB16(src[0] + 2*x) << 12)
     130           0 :                       | (AV_RB16(src[1] + 2*x) << 2)
     131           0 :                       | ((unsigned)AV_RB16(src[2] + 2*x) << 22);
     132             :             } else {
     133     2635776 :                 value = (AV_RL16(src[0] + 2*x) << 12)
     134     1317888 :                       | (AV_RL16(src[1] + 2*x) << 2)
     135     1317888 :                       | ((unsigned)AV_RL16(src[2] + 2*x) << 22);
     136             :             }
     137     1317888 :             write32(dst, value);
     138     1317888 :             dst += 4;
     139             :         }
     140       14976 :         for (i = 0; i < 3; i++)
     141       11232 :             src[i] += pic->linesize[i];
     142             :     }
     143          13 : }
     144             : 
     145          13 : static void encode_gbrp12(AVCodecContext *avctx, const AVFrame *pic, uint16_t *dst)
     146             : {
     147          13 :     DPXContext *s = avctx->priv_data;
     148          39 :     const uint16_t *src[3] = {(uint16_t*)pic->data[0],
     149          13 :                               (uint16_t*)pic->data[1],
     150          13 :                               (uint16_t*)pic->data[2]};
     151             :     int x, y, i, pad;
     152          13 :     pad = avctx->width*6;
     153          13 :     pad = (FFALIGN(pad, 4) - pad) >> 1;
     154        3757 :     for (y = 0; y < avctx->height; y++) {
     155     1321632 :         for (x = 0; x < avctx->width; x++) {
     156             :             uint16_t value[3];
     157     1317888 :             if (s->big_endian) {
     158           0 :                 value[1] = AV_RB16(src[0] + x) << 4;
     159           0 :                 value[2] = AV_RB16(src[1] + x) << 4;
     160           0 :                 value[0] = AV_RB16(src[2] + x) << 4;
     161             :             } else {
     162     1317888 :                 value[1] = AV_RL16(src[0] + x) << 4;
     163     1317888 :                 value[2] = AV_RL16(src[1] + x) << 4;
     164     1317888 :                 value[0] = AV_RL16(src[2] + x) << 4;
     165             :             }
     166     5271552 :             for (i = 0; i < 3; i++)
     167     3953664 :                 write16(dst++, value[i]);
     168             :         }
     169        3744 :         for (i = 0; i < pad; i++)
     170           0 :             *dst++ = 0;
     171       14976 :         for (i = 0; i < 3; i++)
     172       11232 :             src[i] += pic->linesize[i]/2;
     173             :     }
     174          13 : }
     175             : 
     176          78 : static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
     177             :                         const AVFrame *frame, int *got_packet)
     178             : {
     179          78 :     DPXContext *s = avctx->priv_data;
     180             :     int size, ret, need_align, len;
     181             :     uint8_t *buf;
     182             : 
     183             : #define HEADER_SIZE 1664  /* DPX Generic header */
     184          78 :     if (s->bits_per_component == 10)
     185          26 :         size = avctx->height * avctx->width * 4;
     186          52 :     else if (s->bits_per_component == 12) {
     187             :         // 3 components, 12 bits put on 16 bits
     188          13 :         len  = avctx->width*6;
     189          13 :         size = FFALIGN(len, 4);
     190          13 :         need_align = size - len;
     191          13 :         size *= avctx->height;
     192             :     } else {
     193             :         // N components, M bits
     194          39 :         len = avctx->width * s->num_components * s->bits_per_component >> 3;
     195          39 :         size = FFALIGN(len, 4);
     196          39 :         need_align = size - len;
     197          39 :         size *= avctx->height;
     198             :     }
     199          78 :     if ((ret = ff_alloc_packet2(avctx, pkt, size + HEADER_SIZE, 0)) < 0)
     200           0 :         return ret;
     201          78 :     buf = pkt->data;
     202             : 
     203          78 :     memset(buf, 0, HEADER_SIZE);
     204             : 
     205             :     /* File information header */
     206          78 :     write32(buf,       MKBETAG('S','D','P','X'));
     207          78 :     write32(buf +   4, HEADER_SIZE);
     208          78 :     memcpy (buf +   8, "V1.0", 4);
     209          78 :     write32(buf +  20, 1); /* new image */
     210          78 :     write32(buf +  24, HEADER_SIZE);
     211          78 :     if (!(avctx->flags & AV_CODEC_FLAG_BITEXACT))
     212           0 :         memcpy (buf + 160, LIBAVCODEC_IDENT, FFMIN(sizeof(LIBAVCODEC_IDENT), 100));
     213          78 :     write32(buf + 660, 0xFFFFFFFF); /* unencrypted */
     214             : 
     215             :     /* Image information header */
     216          78 :     write16(buf + 768, 0); /* orientation; left to right, top to bottom */
     217          78 :     write16(buf + 770, 1); /* number of elements */
     218          78 :     write32(buf + 772, avctx->width);
     219          78 :     write32(buf + 776, avctx->height);
     220          78 :     buf[800] = s->descriptor;
     221          78 :     buf[801] = 2; /* linear transfer */
     222          78 :     buf[802] = 2; /* linear colorimetric */
     223          78 :     buf[803] = s->bits_per_component;
     224          78 :     write16(buf + 804, (s->bits_per_component == 10 || s->bits_per_component == 12) ?
     225             :                        1 : 0); /* packing method */
     226          78 :     write32(buf + 808, HEADER_SIZE); /* data offset */
     227             : 
     228             :     /* Image source information header */
     229          78 :     write32(buf + 1628, avctx->sample_aspect_ratio.num);
     230          78 :     write32(buf + 1632, avctx->sample_aspect_ratio.den);
     231             : 
     232          78 :     switch(s->bits_per_component) {
     233          39 :     case 8:
     234             :     case 16:
     235          39 :         if (need_align) {
     236             :             int j;
     237           0 :             const uint8_t *src = frame->data[0];
     238           0 :             uint8_t *dst = pkt->data + HEADER_SIZE;
     239           0 :             size = (len + need_align) * avctx->height;
     240           0 :             for (j=0; j<avctx->height; j++) {
     241           0 :                 memcpy(dst, src, len);
     242           0 :                 memset(dst + len, 0, need_align);
     243           0 :                 dst += len + need_align;
     244           0 :                 src += frame->linesize[0];
     245             :             }
     246             :         } else {
     247          78 :             size = av_image_copy_to_buffer(buf + HEADER_SIZE, pkt->size - HEADER_SIZE,
     248          39 :                                            (const uint8_t**)frame->data, frame->linesize,
     249             :                                            avctx->pix_fmt,
     250             :                                            avctx->width, avctx->height, 1);
     251             :         }
     252          39 :         if (size < 0)
     253           0 :             return size;
     254          39 :         break;
     255          26 :     case 10:
     256          26 :         if (s->planar)
     257          13 :             encode_gbrp10(avctx, frame, buf + HEADER_SIZE);
     258             :         else
     259          13 :             encode_rgb48_10bit(avctx, frame, buf + HEADER_SIZE);
     260          26 :         break;
     261          13 :     case 12:
     262          13 :         encode_gbrp12(avctx, frame, (uint16_t*)(buf + HEADER_SIZE));
     263          13 :         break;
     264           0 :     default:
     265           0 :         av_log(avctx, AV_LOG_ERROR, "Unsupported bit depth: %d\n", s->bits_per_component);
     266           0 :         return -1;
     267             :     }
     268             : 
     269          78 :     size += HEADER_SIZE;
     270             : 
     271          78 :     write32(buf + 16, size); /* file size */
     272             : 
     273          78 :     pkt->flags |= AV_PKT_FLAG_KEY;
     274          78 :     *got_packet = 1;
     275             : 
     276          78 :     return 0;
     277             : }
     278             : 
     279             : AVCodec ff_dpx_encoder = {
     280             :     .name           = "dpx",
     281             :     .long_name      = NULL_IF_CONFIG_SMALL("DPX (Digital Picture Exchange) image"),
     282             :     .type           = AVMEDIA_TYPE_VIDEO,
     283             :     .id             = AV_CODEC_ID_DPX,
     284             :     .priv_data_size = sizeof(DPXContext),
     285             :     .init           = encode_init,
     286             :     .encode2        = encode_frame,
     287             :     .pix_fmts       = (const enum AVPixelFormat[]){
     288             :         AV_PIX_FMT_GRAY8,
     289             :         AV_PIX_FMT_RGB24,    AV_PIX_FMT_RGBA, AV_PIX_FMT_ABGR,
     290             :         AV_PIX_FMT_GRAY16LE, AV_PIX_FMT_GRAY16BE,
     291             :         AV_PIX_FMT_RGB48LE,  AV_PIX_FMT_RGB48BE,
     292             :         AV_PIX_FMT_RGBA64LE, AV_PIX_FMT_RGBA64BE,
     293             :         AV_PIX_FMT_GBRP10LE, AV_PIX_FMT_GBRP10BE,
     294             :         AV_PIX_FMT_GBRP12LE, AV_PIX_FMT_GBRP12BE,
     295             :         AV_PIX_FMT_NONE},
     296             : };

Generated by: LCOV version 1.13