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FFmpeg/libavcodec/libopenjpegenc.c

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  1. /*

  2.  * JPEG 2000 encoding support via OpenJPEG

  3.  * Copyright (c) 2011 Michael Bradshaw <mjbshaw gmail com>

  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. /**

  23.  * @file

  24.  * JPEG 2000 encoder using libopenjpeg

  25.  */

  26. 

  27. #define  OPJ_STATIC

  28. #include <openjpeg.h>

  29. 

  30. #include "libavutil/avassert.h"

  31. #include "libavutil/common.h"

  32. #include "libavutil/imgutils.h"

  33. #include "libavutil/intreadwrite.h"

  34. #include "libavutil/opt.h"

  35. #include "avcodec.h"

  36. #include "internal.h"

  37. 

  38. typedef struct {

  39.     AVClass *avclass;

  40.     opj_image_t *image;

  41.     opj_cparameters_t enc_params;

  42.     opj_cinfo_t *compress;

  43.     opj_event_mgr_t event_mgr;

  44.     int format;

  45.     int profile;

  46.     int prog_order;

  47.     int cinema_mode;

  48.     int numresolution;

  49.     int numlayers;

  50.     int disto_alloc;

  51.     int fixed_alloc;

  52.     int fixed_quality;

  53. } LibOpenJPEGContext;

  54. 

  55. static void error_callback(const char *msg, void *data)

  56. {

  57.     av_log(data, AV_LOG_ERROR, "%s\n", msg);

  58. }

  59. 

  60. static void warning_callback(const char *msg, void *data)

  61. {

  62.     av_log(data, AV_LOG_WARNING, "%s\n", msg);

  63. }

  64. 

  65. static void info_callback(const char *msg, void *data)

  66. {

  67.     av_log(data, AV_LOG_DEBUG, "%s\n", msg);

  68. }

  69. 

  70. static opj_image_t *mj2_create_image(AVCodecContext *avctx, opj_cparameters_t *parameters)

  71. {

  72.     const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);

  73.     opj_image_cmptparm_t *cmptparm;

  74.     opj_image_t *img;

  75.     int i;

  76.     int sub_dx[4];

  77.     int sub_dy[4];

  78.     int numcomps;

  79.     OPJ_COLOR_SPACE color_space = CLRSPC_UNKNOWN;

  80. 

  81.     sub_dx[0] = sub_dx[3] = 1;

  82.     sub_dy[0] = sub_dy[3] = 1;

  83.     sub_dx[1] = sub_dx[2] = 1 << desc->log2_chroma_w;

  84.     sub_dy[1] = sub_dy[2] = 1 << desc->log2_chroma_h;

  85. 

  86.     numcomps = desc->nb_components;

  87. 

  88.     switch (avctx->pix_fmt) {

  89.     case AV_PIX_FMT_GRAY8:

  90.     case AV_PIX_FMT_GRAY8A:

  91.     case AV_PIX_FMT_GRAY16:

  92.         color_space = CLRSPC_GRAY;

  93.         break;

  94.     case AV_PIX_FMT_RGB24:

  95.     case AV_PIX_FMT_RGBA:

  96.     case AV_PIX_FMT_RGB48:

  97.     case AV_PIX_FMT_RGBA64:

  98.         color_space = CLRSPC_SRGB;

  99.         break;

  100.     case AV_PIX_FMT_YUV410P:

  101.     case AV_PIX_FMT_YUV411P:

  102.     case AV_PIX_FMT_YUV420P:

  103.     case AV_PIX_FMT_YUV422P:

  104.     case AV_PIX_FMT_YUV440P:

  105.     case AV_PIX_FMT_YUV444P:

  106.     case AV_PIX_FMT_YUVA420P:

  107.     case AV_PIX_FMT_YUVA422P:

  108.     case AV_PIX_FMT_YUVA444P:

  109.     case AV_PIX_FMT_YUV420P9:

  110.     case AV_PIX_FMT_YUV422P9:

  111.     case AV_PIX_FMT_YUV444P9:

  112.     case AV_PIX_FMT_YUVA420P9:

  113.     case AV_PIX_FMT_YUVA422P9:

  114.     case AV_PIX_FMT_YUVA444P9:

  115.     case AV_PIX_FMT_YUV420P10:

  116.     case AV_PIX_FMT_YUV422P10:

  117.     case AV_PIX_FMT_YUV444P10:

  118.     case AV_PIX_FMT_YUVA420P10:

  119.     case AV_PIX_FMT_YUVA422P10:

  120.     case AV_PIX_FMT_YUVA444P10:

  121.     case AV_PIX_FMT_YUV420P12:

  122.     case AV_PIX_FMT_YUV422P12:

  123.     case AV_PIX_FMT_YUV444P12:

  124.     case AV_PIX_FMT_YUV420P14:

  125.     case AV_PIX_FMT_YUV422P14:

  126.     case AV_PIX_FMT_YUV444P14:

  127.     case AV_PIX_FMT_YUV420P16:

  128.     case AV_PIX_FMT_YUV422P16:

  129.     case AV_PIX_FMT_YUV444P16:

  130.     case AV_PIX_FMT_YUVA420P16:

  131.     case AV_PIX_FMT_YUVA422P16:

  132.     case AV_PIX_FMT_YUVA444P16:

  133.         color_space = CLRSPC_SYCC;

  134.         break;

  135.     default:

  136.         av_log(avctx, AV_LOG_ERROR,

  137.                "The requested pixel format '%s' is not supported\n",

  138.                av_get_pix_fmt_name(avctx->pix_fmt));

  139.         return NULL;

  140.     }

  141. 

  142.     cmptparm = av_mallocz(numcomps * sizeof(*cmptparm));

  143.     if (!cmptparm) {

  144.         av_log(avctx, AV_LOG_ERROR, "Not enough memory\n");

  145.         return NULL;

  146.     }

  147.     for (i = 0; i < numcomps; i++) {

  148.         cmptparm[i].prec = desc->comp[i].depth_minus1 + 1;

  149.         cmptparm[i].bpp  = desc->comp[i].depth_minus1 + 1;

  150.         cmptparm[i].sgnd = 0;

  151.         cmptparm[i].dx = sub_dx[i];

  152.         cmptparm[i].dy = sub_dy[i];

  153.         cmptparm[i].w = avctx->width / sub_dx[i];

  154.         cmptparm[i].h = avctx->height / sub_dy[i];

  155.     }

  156. 

  157.     img = opj_image_create(numcomps, cmptparm, color_space);

  158.     av_freep(&cmptparm);

  159.     return img;

  160. }

  161. 

  162. static av_cold int libopenjpeg_encode_init(AVCodecContext *avctx)

  163. {

  164.     LibOpenJPEGContext *ctx = avctx->priv_data;

  165.     int err = AVERROR(ENOMEM);

  166. 

  167.     opj_set_default_encoder_parameters(&ctx->enc_params);

  168. 

  169.     ctx->enc_params.cp_rsiz = ctx->profile;

  170.     ctx->enc_params.mode = !!avctx->global_quality;

  171.     ctx->enc_params.cp_cinema = ctx->cinema_mode;

  172.     ctx->enc_params.prog_order = ctx->prog_order;

  173.     ctx->enc_params.numresolution = ctx->numresolution;

  174.     ctx->enc_params.cp_disto_alloc = ctx->disto_alloc;

  175.     ctx->enc_params.cp_fixed_alloc = ctx->fixed_alloc;

  176.     ctx->enc_params.cp_fixed_quality = ctx->fixed_quality;

  177.     ctx->enc_params.tcp_numlayers = ctx->numlayers;

  178.     ctx->enc_params.tcp_rates[0] = FFMAX(avctx->compression_level, 0) * 2;

  179. 

  180.     ctx->compress = opj_create_compress(ctx->format);

  181.     if (!ctx->compress) {

  182.         av_log(avctx, AV_LOG_ERROR, "Error creating the compressor\n");

  183.         return AVERROR(ENOMEM);

  184.     }

  185. 

  186.     avctx->coded_frame = avcodec_alloc_frame();

  187.     if (!avctx->coded_frame) {

  188.         av_log(avctx, AV_LOG_ERROR, "Error allocating coded frame\n");

  189.         goto fail;

  190.     }

  191. 

  192.     ctx->image = mj2_create_image(avctx, &ctx->enc_params);

  193.     if (!ctx->image) {

  194.         av_log(avctx, AV_LOG_ERROR, "Error creating the mj2 image\n");

  195.         err = AVERROR(EINVAL);

  196.         goto fail;

  197.     }

  198. 

  199.     memset(&ctx->event_mgr, 0, sizeof(opj_event_mgr_t));

  200.     ctx->event_mgr.info_handler    = info_callback;

  201.     ctx->event_mgr.error_handler = error_callback;

  202.     ctx->event_mgr.warning_handler = warning_callback;

  203.     opj_set_event_mgr((opj_common_ptr)ctx->compress, &ctx->event_mgr, avctx);

  204. 

  205.     return 0;

  206. 

  207. fail:

  208.     av_freep(&ctx->compress);

  209.     av_freep(&avctx->coded_frame);

  210.     return err;

  211. }

  212. 

  213. static int libopenjpeg_copy_packed8(AVCodecContext *avctx, const AVFrame *frame, opj_image_t *image)

  214. {

  215.     int compno;

  216.     int x;

  217.     int y;

  218.     int image_index;

  219.     int frame_index;

  220.     const int numcomps = image->numcomps;

  221. 

  222.     for (compno = 0; compno < numcomps; ++compno) {

  223.         if (image->comps[compno].w > frame->linesize[0] / numcomps) {

  224.             av_log(avctx, AV_LOG_ERROR, "Error: frame's linesize is too small for the image\n");

  225.             return 0;

  226.         }

  227.     }

  228. 

  229.     for (compno = 0; compno < numcomps; ++compno) {

  230.         for (y = 0; y < avctx->height; ++y) {

  231.             image_index = y * avctx->width;

  232.             frame_index = y * frame->linesize[0] + compno;

  233.             for (x = 0; x < avctx->width; ++x) {

  234.                 image->comps[compno].data[image_index++] = frame->data[0][frame_index];

  235.                 frame_index += numcomps;

  236.             }

  237.         }

  238.     }

  239. 

  240.     return 1;

  241. }

  242. 

  243. static int libopenjpeg_copy_packed16(AVCodecContext *avctx, const AVFrame *frame, opj_image_t *image)

  244. {

  245.     int compno;

  246.     int x;

  247.     int y;

  248.     int image_index;

  249.     int frame_index;

  250.     const int numcomps = image->numcomps;

  251.     uint16_t *frame_ptr = (uint16_t*)frame->data[0];

  252. 

  253.     for (compno = 0; compno < numcomps; ++compno) {

  254.         if (image->comps[compno].w > frame->linesize[0] / numcomps) {

  255.             av_log(avctx, AV_LOG_ERROR, "Error: frame's linesize is too small for the image\n");

  256.             return 0;

  257.         }

  258.     }

  259. 

  260.     for (compno = 0; compno < numcomps; ++compno) {

  261.         for (y = 0; y < avctx->height; ++y) {

  262.             image_index = y * avctx->width;

  263.             frame_index = y * (frame->linesize[0] / 2) + compno;

  264.             for (x = 0; x < avctx->width; ++x) {

  265.                 image->comps[compno].data[image_index++] = frame_ptr[frame_index];

  266.                 frame_index += numcomps;

  267.             }

  268.         }

  269.     }

  270. 

  271.     return 1;

  272. }

  273. 

  274. static int libopenjpeg_copy_unpacked8(AVCodecContext *avctx, const AVFrame *frame, opj_image_t *image)

  275. {

  276.     int compno;

  277.     int x;

  278.     int y;

  279.     int width;

  280.     int height;

  281.     int image_index;

  282.     int frame_index;

  283.     const int numcomps = image->numcomps;

  284. 

  285.     for (compno = 0; compno < numcomps; ++compno) {

  286.         if (image->comps[compno].w > frame->linesize[compno]) {

  287.             av_log(avctx, AV_LOG_ERROR, "Error: frame's linesize is too small for the image\n");

  288.             return 0;

  289.         }

  290.     }

  291. 

  292.     for (compno = 0; compno < numcomps; ++compno) {

  293.         width = avctx->width / image->comps[compno].dx;

  294.         height = avctx->height / image->comps[compno].dy;

  295.         for (y = 0; y < height; ++y) {

  296.             image_index = y * width;

  297.             frame_index = y * frame->linesize[compno];

  298.             for (x = 0; x < width; ++x)

  299.                 image->comps[compno].data[image_index++] = frame->data[compno][frame_index++];

  300.         }

  301.     }

  302. 

  303.     return 1;

  304. }

  305. 

  306. static int libopenjpeg_copy_unpacked16(AVCodecContext *avctx, const AVFrame *frame, opj_image_t *image)

  307. {

  308.     int compno;

  309.     int x;

  310.     int y;

  311.     int width;

  312.     int height;

  313.     int image_index;

  314.     int frame_index;

  315.     const int numcomps = image->numcomps;

  316.     uint16_t *frame_ptr;

  317. 

  318.     for (compno = 0; compno < numcomps; ++compno) {

  319.         if (image->comps[compno].w > frame->linesize[compno]) {

  320.             av_log(avctx, AV_LOG_ERROR, "Error: frame's linesize is too small for the image\n");

  321.             return 0;

  322.         }

  323.     }

  324. 

  325.     for (compno = 0; compno < numcomps; ++compno) {

  326.         width = avctx->width / image->comps[compno].dx;

  327.         height = avctx->height / image->comps[compno].dy;

  328.         frame_ptr = (uint16_t*)frame->data[compno];

  329.         for (y = 0; y < height; ++y) {

  330.             image_index = y * width;

  331.             frame_index = y * (frame->linesize[compno] / 2);

  332.             for (x = 0; x < width; ++x)

  333.                 image->comps[compno].data[image_index++] = frame_ptr[frame_index++];

  334.         }

  335.     }

  336. 

  337.     return 1;

  338. }

  339. 

  340. static int libopenjpeg_encode_frame(AVCodecContext *avctx, AVPacket *pkt,

  341.                                     const AVFrame *frame, int *got_packet)

  342. {

  343.     LibOpenJPEGContext *ctx = avctx->priv_data;

  344.     opj_cinfo_t *compress = ctx->compress;

  345.     opj_image_t *image    = ctx->image;

  346.     opj_cio_t *stream;

  347.     int cpyresult = 0;

  348.     int ret, len;

  349. 

  350.     // x0, y0 is the top left corner of the image

  351.     // x1, y1 is the width, height of the reference grid

  352.     image->x0 = 0;

  353.     image->y0 = 0;

  354.     image->x1 = (avctx->width  - 1) * ctx->enc_params.subsampling_dx + 1;

  355.     image->y1 = (avctx->height - 1) * ctx->enc_params.subsampling_dy + 1;

  356. 

  357.     switch (avctx->pix_fmt) {

  358.     case AV_PIX_FMT_RGB24:

  359.     case AV_PIX_FMT_RGBA:

  360.     case AV_PIX_FMT_GRAY8A:

  361.         cpyresult = libopenjpeg_copy_packed8(avctx, frame, image);

  362.         break;

  363.     case AV_PIX_FMT_RGB48:

  364.     case AV_PIX_FMT_RGBA64:

  365.         cpyresult = libopenjpeg_copy_packed16(avctx, frame, image);

  366.         break;

  367.     case AV_PIX_FMT_GRAY8:

  368.     case AV_PIX_FMT_YUV410P:

  369.     case AV_PIX_FMT_YUV411P:

  370.     case AV_PIX_FMT_YUV420P:

  371.     case AV_PIX_FMT_YUV422P:

  372.     case AV_PIX_FMT_YUV440P:

  373.     case AV_PIX_FMT_YUV444P:

  374.     case AV_PIX_FMT_YUVA420P:

  375.     case AV_PIX_FMT_YUVA422P:

  376.     case AV_PIX_FMT_YUVA444P:

  377.         cpyresult = libopenjpeg_copy_unpacked8(avctx, frame, image);

  378.         break;

  379.     case AV_PIX_FMT_GRAY16:

  380.     case AV_PIX_FMT_YUV420P9:

  381.     case AV_PIX_FMT_YUV422P9:

  382.     case AV_PIX_FMT_YUV444P9:

  383.     case AV_PIX_FMT_YUVA420P9:

  384.     case AV_PIX_FMT_YUVA422P9:

  385.     case AV_PIX_FMT_YUVA444P9:

  386.     case AV_PIX_FMT_YUV444P10:

  387.     case AV_PIX_FMT_YUV422P10:

  388.     case AV_PIX_FMT_YUV420P10:

  389.     case AV_PIX_FMT_YUVA444P10:

  390.     case AV_PIX_FMT_YUVA422P10:

  391.     case AV_PIX_FMT_YUVA420P10:

  392.     case AV_PIX_FMT_YUV420P12:

  393.     case AV_PIX_FMT_YUV422P12:

  394.     case AV_PIX_FMT_YUV444P12:

  395.     case AV_PIX_FMT_YUV420P14:

  396.     case AV_PIX_FMT_YUV422P14:

  397.     case AV_PIX_FMT_YUV444P14:

  398.     case AV_PIX_FMT_YUV444P16:

  399.     case AV_PIX_FMT_YUV422P16:

  400.     case AV_PIX_FMT_YUV420P16:

  401.     case AV_PIX_FMT_YUVA444P16:

  402.     case AV_PIX_FMT_YUVA422P16:

  403.     case AV_PIX_FMT_YUVA420P16:

  404.         cpyresult = libopenjpeg_copy_unpacked16(avctx, frame, image);

  405.         break;

  406.     default:

  407.         av_log(avctx, AV_LOG_ERROR,

  408.                "The frame's pixel format '%s' is not supported\n",

  409.                av_get_pix_fmt_name(avctx->pix_fmt));

  410.         return AVERROR(EINVAL);

  411.         break;

  412.     }

  413. 

  414.     if (!cpyresult) {

  415.         av_log(avctx, AV_LOG_ERROR,

  416.                "Could not copy the frame data to the internal image buffer\n");

  417.         return -1;

  418.     }

  419. 

  420.     opj_setup_encoder(compress, &ctx->enc_params, image);

  421.     stream = opj_cio_open((opj_common_ptr)compress, NULL, 0);

  422.     if (!stream) {

  423.         av_log(avctx, AV_LOG_ERROR, "Error creating the cio stream\n");

  424.         return AVERROR(ENOMEM);

  425.     }

  426. 

  427.     if (!opj_encode(compress, stream, image, NULL)) {

  428.         opj_cio_close(stream);

  429.         av_log(avctx, AV_LOG_ERROR, "Error during the opj encode\n");

  430.         return -1;

  431.     }

  432. 

  433.     len = cio_tell(stream);

  434.     if ((ret = ff_alloc_packet2(avctx, pkt, len)) < 0) {

  435.         opj_cio_close(stream);

  436.         return ret;

  437.     }

  438. 

  439.     memcpy(pkt->data, stream->buffer, len);

  440.     pkt->flags |= AV_PKT_FLAG_KEY;

  441.     *got_packet = 1;

  442.     opj_cio_close(stream);

  443.     return 0;

  444. }

  445. 

  446. static av_cold int libopenjpeg_encode_close(AVCodecContext *avctx)

  447. {

  448.     LibOpenJPEGContext *ctx = avctx->priv_data;

  449. 

  450.     opj_destroy_compress(ctx->compress);

  451.     opj_image_destroy(ctx->image);

  452.     av_freep(&avctx->coded_frame);

  453.     return 0;

  454. }

  455. 

  456. #define OFFSET(x) offsetof(LibOpenJPEGContext, x)

  457. #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

  458. static const AVOption options[] = {

  459.     { "format",        "Codec Format",      OFFSET(format),        AV_OPT_TYPE_INT,   { .i64 = CODEC_JP2   }, CODEC_J2K, CODEC_JP2,   VE, "format"      },

  460.     { "j2k",           NULL,                0,                     AV_OPT_TYPE_CONST, { .i64 = CODEC_J2K   }, 0,         0,           VE, "format"      },

  461.     { "jp2",           NULL,                0,                     AV_OPT_TYPE_CONST, { .i64 = CODEC_JP2   }, 0,         0,           VE, "format"      },

  462.     { "profile",       NULL,                OFFSET(profile),       AV_OPT_TYPE_INT,   { .i64 = STD_RSIZ    }, STD_RSIZ,  CINEMA4K,    VE, "profile"     },

  463.     { "jpeg2000",      NULL,                0,                     AV_OPT_TYPE_CONST, { .i64 = STD_RSIZ    }, 0,         0,           VE, "profile"     },

  464.     { "cinema2k",      NULL,                0,                     AV_OPT_TYPE_CONST, { .i64 = CINEMA2K    }, 0,         0,           VE, "profile"     },

  465.     { "cinema4k",      NULL,                0,                     AV_OPT_TYPE_CONST, { .i64 = CINEMA4K    }, 0,         0,           VE, "profile"     },

  466.     { "cinema_mode",   "Digital Cinema",    OFFSET(cinema_mode),   AV_OPT_TYPE_INT,   { .i64 = OFF         }, OFF,       CINEMA4K_24, VE, "cinema_mode" },

  467.     { "off",           NULL,                0,                     AV_OPT_TYPE_CONST, { .i64 = OFF         }, 0,         0,           VE, "cinema_mode" },

  468.     { "2k_24",         NULL,                0,                     AV_OPT_TYPE_CONST, { .i64 = CINEMA2K_24 }, 0,         0,           VE, "cinema_mode" },

  469.     { "2k_48",         NULL,                0,                     AV_OPT_TYPE_CONST, { .i64 = CINEMA2K_48 }, 0,         0,           VE, "cinema_mode" },

  470.     { "4k_24",         NULL,                0,                     AV_OPT_TYPE_CONST, { .i64 = CINEMA4K_24 }, 0,         0,           VE, "cinema_mode" },

  471.     { "prog_order",    "Progression Order", OFFSET(prog_order),    AV_OPT_TYPE_INT,   { .i64 = LRCP        }, LRCP,      CPRL,        VE, "prog_order"  },

  472.     { "lrcp",          NULL,                0,                     AV_OPT_TYPE_CONST, { .i64 = LRCP        }, 0,         0,           VE, "prog_order"  },

  473.     { "rlcp",          NULL,                0,                     AV_OPT_TYPE_CONST, { .i64 = RLCP        }, 0,         0,           VE, "prog_order"  },

  474.     { "rpcl",          NULL,                0,                     AV_OPT_TYPE_CONST, { .i64 = RPCL        }, 0,         0,           VE, "prog_order"  },

  475.     { "pcrl",          NULL,                0,                     AV_OPT_TYPE_CONST, { .i64 = PCRL        }, 0,         0,           VE, "prog_order"  },

  476.     { "cprl",          NULL,                0,                     AV_OPT_TYPE_CONST, { .i64 = CPRL        }, 0,         0,           VE, "prog_order"  },

  477.     { "numresolution", NULL,                OFFSET(numresolution), AV_OPT_TYPE_INT,   { .i64 = 6           }, 1,         INT_MAX,     VE                },

  478.     { "numlayers",     NULL,                OFFSET(numlayers),     AV_OPT_TYPE_INT,   { .i64 = 1           }, 1,         10,          VE                },

  479.     { "disto_alloc",   NULL,                OFFSET(disto_alloc),   AV_OPT_TYPE_INT,   { .i64 = 1           }, 0,         1,           VE                },

  480.     { "fixed_alloc",   NULL,                OFFSET(fixed_alloc),   AV_OPT_TYPE_INT,   { .i64 = 0           }, 0,         1,           VE                },

  481.     { "fixed_quality", NULL,                OFFSET(fixed_quality), AV_OPT_TYPE_INT,   { .i64 = 0           }, 0,         1,           VE                },

  482.     { NULL },

  483. };

  484. 

  485. static const AVClass class = {

  486.     .class_name = "libopenjpeg",

  487.     .item_name  = av_default_item_name,

  488.     .option     = options,

  489.     .version    = LIBAVUTIL_VERSION_INT,

  490. };

  491. 

  492. AVCodec ff_libopenjpeg_encoder = {

  493.     .name           = "libopenjpeg",

  494.     .type           = AVMEDIA_TYPE_VIDEO,

  495.     .id             = AV_CODEC_ID_JPEG2000,

  496.     .priv_data_size = sizeof(LibOpenJPEGContext),

  497.     .init           = libopenjpeg_encode_init,

  498.     .encode2        = libopenjpeg_encode_frame,

  499.     .close          = libopenjpeg_encode_close,

  500.     .capabilities   = 0,

  501.     .pix_fmts       = (const enum AVPixelFormat[]) {

  502.         AV_PIX_FMT_RGB24, AV_PIX_FMT_RGBA, AV_PIX_FMT_RGB48, AV_PIX_FMT_RGBA64,

  503.         AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY8A, AV_PIX_FMT_GRAY16,

  504.         AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P,

  505.         AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVA422P,

  506.         AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUVA444P,

  507.         AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,

  508.         AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,

  509.         AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,

  510.         AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,

  511.         AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12,

  512.         AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,

  513.         AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,

  514.         AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,

  515.         AV_PIX_FMT_NONE

  516.     },

  517.     .long_name      = NULL_IF_CONFIG_SMALL("OpenJPEG JPEG 2000"),

  518.     .priv_class     = &class,

  519. };