429 lines
13 KiB
C
429 lines
13 KiB
C
/*
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* JPEG 2000 encoding support via OpenJPEG
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* Copyright (c) 2011 Michael Bradshaw <mbradshaw@sorensonmedia.com>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* JPEG 2000 encoder using libopenjpeg
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*/
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#include "libavutil/imgutils.h"
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#include "libavutil/avassert.h"
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#include "avcodec.h"
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#include "libavutil/intreadwrite.h"
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#define OPJ_STATIC
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#include <openjpeg.h>
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typedef struct {
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opj_image_t *image;
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opj_cparameters_t enc_params;
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opj_cinfo_t *compress;
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opj_event_mgr_t event_mgr;
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} LibOpenJPEGContext;
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static void error_callback(const char *msg, void *data)
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{
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av_log((AVCodecContext*)data, AV_LOG_ERROR, "libopenjpeg: %s\n", msg);
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}
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static void warning_callback(const char *msg, void *data)
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{
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av_log((AVCodecContext*)data, AV_LOG_WARNING, "libopenjpeg: %s\n", msg);
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}
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static opj_image_t *mj2_create_image(AVCodecContext *avctx, opj_cparameters_t *parameters)
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{
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opj_image_cmptparm_t *cmptparm;
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opj_image_t *img;
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int i;
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int bpp = 8;
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int sub_dx[4];
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int sub_dy[4];
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int numcomps = 0;
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OPJ_COLOR_SPACE color_space = CLRSPC_UNKNOWN;
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sub_dx[0] = sub_dx[3] = 1;
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sub_dy[0] = sub_dy[3] = 1;
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sub_dx[1] = sub_dx[2] = 1<<av_pix_fmt_descriptors[avctx->pix_fmt].log2_chroma_w;
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sub_dy[1] = sub_dy[2] = 1<<av_pix_fmt_descriptors[avctx->pix_fmt].log2_chroma_h;
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switch (avctx->pix_fmt) {
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case PIX_FMT_GRAY8:
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color_space = CLRSPC_GRAY;
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numcomps = 1;
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break;
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case PIX_FMT_GRAY16:
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color_space = CLRSPC_GRAY;
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numcomps = 1;
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bpp = 16;
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break;
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case PIX_FMT_RGB24:
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color_space = CLRSPC_SRGB;
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numcomps = 3;
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break;
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case PIX_FMT_RGBA:
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color_space = CLRSPC_SRGB;
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numcomps = 4;
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break;
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case PIX_FMT_RGB48:
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color_space = CLRSPC_SRGB;
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numcomps = 3;
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bpp = 16;
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break;
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case PIX_FMT_RGBA64:
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color_space = CLRSPC_SRGB;
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numcomps = 4;
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bpp = 16;
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break;
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case PIX_FMT_YUV420P:
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color_space = CLRSPC_SYCC;
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numcomps = 3;
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break;
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case PIX_FMT_YUV422P:
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color_space = CLRSPC_SYCC;
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numcomps = 3;
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break;
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case PIX_FMT_YUV440P:
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color_space = CLRSPC_SYCC;
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numcomps = 3;
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break;
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case PIX_FMT_YUV444P:
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color_space = CLRSPC_SYCC;
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numcomps = 3;
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break;
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case PIX_FMT_YUVA420P:
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color_space = CLRSPC_SYCC;
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numcomps = 4;
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break;
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case PIX_FMT_YUV420P9:
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case PIX_FMT_YUV422P9:
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case PIX_FMT_YUV444P9:
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color_space = CLRSPC_SYCC;
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numcomps = 3;
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bpp = 9;
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break;
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case PIX_FMT_YUV420P10:
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case PIX_FMT_YUV422P10:
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case PIX_FMT_YUV444P10:
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color_space = CLRSPC_SYCC;
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numcomps = 3;
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bpp = 10;
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break;
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case PIX_FMT_YUV420P16:
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case PIX_FMT_YUV422P16:
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case PIX_FMT_YUV444P16:
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color_space = CLRSPC_SYCC;
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numcomps = 3;
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bpp = 16;
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break;
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default:
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av_log(avctx, AV_LOG_ERROR, "The requested pixel format '%s' is not supported\n", av_get_pix_fmt_name(avctx->pix_fmt));
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return NULL;
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}
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cmptparm = av_mallocz(numcomps * sizeof(opj_image_cmptparm_t));
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if (!cmptparm) {
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av_log(avctx, AV_LOG_ERROR, "Not enough memory");
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return NULL;
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}
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for (i = 0; i < numcomps; i++) {
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cmptparm[i].prec = bpp;
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cmptparm[i].bpp = bpp;
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cmptparm[i].sgnd = 0;
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cmptparm[i].dx = sub_dx[i];
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cmptparm[i].dy = sub_dy[i];
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cmptparm[i].w = avctx->width / sub_dx[i];
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cmptparm[i].h = avctx->height / sub_dy[i];
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}
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img = opj_image_create(numcomps, cmptparm, color_space);
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av_freep(&cmptparm);
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return img;
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}
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static av_cold int libopenjpeg_encode_init(AVCodecContext *avctx)
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{
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LibOpenJPEGContext *ctx = avctx->priv_data;
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opj_set_default_encoder_parameters(&ctx->enc_params);
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ctx->enc_params.tcp_numlayers = 1;
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ctx->enc_params.tcp_rates[0] = FFMAX(avctx->compression_level, 0) * 2;
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ctx->enc_params.cp_disto_alloc = 1;
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ctx->compress = opj_create_compress(CODEC_J2K);
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if (!ctx->compress) {
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av_log(avctx, AV_LOG_ERROR, "Error creating the compressor\n");
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return AVERROR(ENOMEM);
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}
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avctx->coded_frame = avcodec_alloc_frame();
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if (!avctx->coded_frame) {
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av_freep(&ctx->compress);
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av_log(avctx, AV_LOG_ERROR, "Error allocating coded frame\n");
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return AVERROR(ENOMEM);
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}
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ctx->image = mj2_create_image(avctx, &ctx->enc_params);
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if (!ctx->image) {
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av_freep(&ctx->compress);
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av_freep(&avctx->coded_frame);
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av_log(avctx, AV_LOG_ERROR, "Error creating the mj2 image\n");
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return AVERROR(EINVAL);
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}
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memset(&ctx->event_mgr, 0, sizeof(opj_event_mgr_t));
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ctx->event_mgr.error_handler = error_callback;
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ctx->event_mgr.warning_handler = warning_callback;
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ctx->event_mgr.info_handler = NULL;
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opj_set_event_mgr((opj_common_ptr)ctx->compress, &ctx->event_mgr, avctx);
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return 0;
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}
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static int libopenjpeg_copy_packed8(AVCodecContext *avctx, AVFrame *frame, opj_image_t *image, int numcomps)
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{
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int compno;
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int x;
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int y;
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av_assert0(numcomps == 1 || numcomps == 3 || numcomps == 4);
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for (compno = 0; compno < numcomps; ++compno) {
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if (image->comps[compno].w > frame->linesize[0] / numcomps) {
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av_log(avctx, AV_LOG_ERROR, "Error: frame's linesize is too small for the image\n");
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return 0;
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}
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}
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for (compno = 0; compno < numcomps; ++compno) {
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for (y = 0; y < avctx->height; ++y) {
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for (x = 0; x < avctx->width; ++x) {
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image->comps[compno].data[y * avctx->width + x] = frame->data[0][y * frame->linesize[0] + x * numcomps + compno];
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}
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}
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}
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return 1;
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}
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static int libopenjpeg_copy_packed16(AVCodecContext *avctx, AVFrame *frame, opj_image_t *image, int numcomps)
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{
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int compno;
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int x;
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int y;
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uint16_t *frame_ptr = (uint16_t*)frame->data[0];
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av_assert0(numcomps == 1 || numcomps == 3 || numcomps == 4);
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for (compno = 0; compno < numcomps; ++compno) {
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if (image->comps[compno].w > frame->linesize[0] / numcomps) {
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av_log(avctx, AV_LOG_ERROR, "Error: frame's linesize is too small for the image\n");
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return 0;
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}
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}
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for (compno = 0; compno < numcomps; ++compno) {
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for (y = 0; y < avctx->height; ++y) {
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for (x = 0; x < avctx->width; ++x) {
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image->comps[compno].data[y * avctx->width + x] = frame_ptr[y * frame->linesize[0] / 2 + x * numcomps + compno];
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}
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}
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}
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return 1;
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}
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static int libopenjpeg_copy_unpacked8(AVCodecContext *avctx, AVFrame *frame, opj_image_t *image)
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{
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int compno;
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int x;
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int y;
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int width;
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int height;
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const int numcomps = image->numcomps;
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for (compno = 0; compno < numcomps; ++compno) {
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if (image->comps[compno].w > frame->linesize[compno]) {
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av_log(avctx, AV_LOG_ERROR, "Error: frame's linesize is too small for the image\n");
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return 0;
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}
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}
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for (compno = 0; compno < numcomps; ++compno) {
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width = avctx->width / image->comps[compno].dx;
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height = avctx->height / image->comps[compno].dy;
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for (y = 0; y < height; ++y) {
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for (x = 0; x < width; ++x) {
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image->comps[compno].data[y * width + x] = frame->data[compno][y * frame->linesize[compno] + x];
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}
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}
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}
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return 1;
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}
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static int libopenjpeg_copy_unpacked16(AVCodecContext *avctx, AVFrame *frame, opj_image_t *image)
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{
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int compno;
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int x;
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int y;
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int width;
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int height;
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const int numcomps = image->numcomps;
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uint16_t *frame_ptr;
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for (compno = 0; compno < numcomps; ++compno) {
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if (image->comps[compno].w > frame->linesize[compno]) {
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av_log(avctx, AV_LOG_ERROR, "Error: frame's linesize is too small for the image\n");
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return 0;
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}
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}
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for (compno = 0; compno < numcomps; ++compno) {
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width = avctx->width / image->comps[compno].dx;
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height = avctx->height / image->comps[compno].dy;
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frame_ptr = (uint16_t*)frame->data[compno];
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for (y = 0; y < height; ++y) {
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for (x = 0; x < width; ++x) {
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image->comps[compno].data[y * width + x] = frame_ptr[y * (frame->linesize[compno] / 2) + x];
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}
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}
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}
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return 1;
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}
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static int libopenjpeg_encode_frame(AVCodecContext *avctx, uint8_t *buf, int buf_size, void *data)
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{
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AVFrame *frame = data;
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LibOpenJPEGContext *ctx = avctx->priv_data;
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opj_cinfo_t *compress = ctx->compress;
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opj_image_t *image = ctx->image;
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opj_cio_t *stream;
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int cpyresult = 0;
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int len = 0;
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// x0, y0 is the top left corner of the image
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// x1, y1 is the width, height of the reference grid
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image->x0 = 0;
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image->y0 = 0;
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image->x1 = (avctx->width - 1) * ctx->enc_params.subsampling_dx + 1;
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image->y1 = (avctx->height - 1) * ctx->enc_params.subsampling_dy + 1;
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switch (avctx->pix_fmt) {
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case PIX_FMT_RGB24:
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cpyresult = libopenjpeg_copy_packed8(avctx, frame, image, 3);
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break;
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case PIX_FMT_RGBA:
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cpyresult = libopenjpeg_copy_packed8(avctx, frame, image, 4);
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break;
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case PIX_FMT_RGB48:
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cpyresult = libopenjpeg_copy_packed16(avctx, frame, image, 3);
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break;
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case PIX_FMT_RGBA64:
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cpyresult = libopenjpeg_copy_packed16(avctx, frame, image, 4);
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break;
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case PIX_FMT_GRAY8:
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case PIX_FMT_YUV420P:
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case PIX_FMT_YUV422P:
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case PIX_FMT_YUV440P:
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case PIX_FMT_YUV444P:
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case PIX_FMT_YUVA420P:
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cpyresult = libopenjpeg_copy_unpacked8(avctx, frame, image);
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break;
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case PIX_FMT_GRAY16:
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case PIX_FMT_YUV420P9:
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case PIX_FMT_YUV420P10:
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case PIX_FMT_YUV420P16:
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case PIX_FMT_YUV422P9:
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case PIX_FMT_YUV422P10:
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case PIX_FMT_YUV422P16:
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case PIX_FMT_YUV444P9:
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case PIX_FMT_YUV444P10:
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case PIX_FMT_YUV444P16:
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cpyresult = libopenjpeg_copy_unpacked16(avctx, frame, image);
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break;
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default:
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av_log(avctx, AV_LOG_ERROR, "The frame's pixel format '%s' is not supported\n", av_get_pix_fmt_name(avctx->pix_fmt));
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return AVERROR(EINVAL);
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break;
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}
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if (!cpyresult) {
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av_log(avctx, AV_LOG_ERROR, "Could not copy the frame data to the internal image buffer\n");
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return -1;
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}
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opj_setup_encoder(compress, &ctx->enc_params, image);
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stream = opj_cio_open((opj_common_ptr)compress, NULL, 0);
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if (!stream) {
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av_log(avctx, AV_LOG_ERROR, "Error creating the cio stream\n");
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return AVERROR(ENOMEM);
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}
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if (!opj_encode(compress, stream, image, NULL)) {
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opj_cio_close(stream);
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av_log(avctx, AV_LOG_ERROR, "Error during the opj encode\n");
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return -1;
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}
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len = cio_tell(stream);
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if (len > buf_size) {
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opj_cio_close(stream);
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av_log(avctx, AV_LOG_ERROR, "Error with buf_size, not large enough to hold the frame\n");
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return -1;
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}
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memcpy(buf, stream->buffer, len);
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opj_cio_close(stream);
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return len;
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}
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static av_cold int libopenjpeg_encode_close(AVCodecContext *avctx)
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{
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LibOpenJPEGContext *ctx = avctx->priv_data;
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opj_destroy_compress(ctx->compress);
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opj_image_destroy(ctx->image);
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av_freep(&avctx->coded_frame);
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return 0 ;
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}
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AVCodec ff_libopenjpeg_encoder = {
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.name = "libopenjpeg",
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.type = AVMEDIA_TYPE_VIDEO,
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.id = CODEC_ID_JPEG2000,
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.priv_data_size = sizeof(LibOpenJPEGContext),
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.init = libopenjpeg_encode_init,
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.encode = libopenjpeg_encode_frame,
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.close = libopenjpeg_encode_close,
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.capabilities = 0,
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.pix_fmts = (const enum PixelFormat[]){PIX_FMT_RGB24,PIX_FMT_RGBA,PIX_FMT_RGB48,PIX_FMT_RGBA64,
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PIX_FMT_GRAY8,PIX_FMT_GRAY16,
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PIX_FMT_YUV420P,PIX_FMT_YUV422P,PIX_FMT_YUVA420P,
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PIX_FMT_YUV440P,PIX_FMT_YUV444P,
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PIX_FMT_YUV420P9,PIX_FMT_YUV422P9,PIX_FMT_YUV444P9,
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PIX_FMT_YUV420P10,PIX_FMT_YUV422P10,PIX_FMT_YUV444P10,
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PIX_FMT_YUV420P16,PIX_FMT_YUV422P16,PIX_FMT_YUV444P16,
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PIX_FMT_NONE},
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.long_name = NULL_IF_CONFIG_SMALL("OpenJPEG based JPEG 2000 encoder"),
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} ;
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