2 * JPEG 2000 encoding support via OpenJPEG
3 * Copyright (c) 2011 Michael Bradshaw <mbradshaw@sorensonmedia.com>
5 * This file is part of FFmpeg.
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.
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.
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
24 * JPEG 2000 encoder using libopenjpeg
27 #include "libavutil/imgutils.h"
28 #include "libavutil/avassert.h"
30 #include "libavutil/intreadwrite.h"
36 opj_cparameters_t enc_params;
37 opj_cinfo_t *compress;
38 opj_event_mgr_t event_mgr;
41 static void error_callback(const char *msg, void *data)
43 av_log((AVCodecContext*)data, AV_LOG_ERROR, "libopenjpeg: %s\n", msg);
46 static void warning_callback(const char *msg, void *data)
48 av_log((AVCodecContext*)data, AV_LOG_WARNING, "libopenjpeg: %s\n", msg);
51 static opj_image_t *mj2_create_image(AVCodecContext *avctx, opj_cparameters_t *parameters)
53 opj_image_cmptparm_t *cmptparm;
60 OPJ_COLOR_SPACE color_space = CLRSPC_UNKNOWN;
62 sub_dx[0] = sub_dx[3] = 1;
63 sub_dy[0] = sub_dy[3] = 1;
64 sub_dx[1] = sub_dx[2] = 1<<av_pix_fmt_descriptors[avctx->pix_fmt].log2_chroma_w;
65 sub_dy[1] = sub_dy[2] = 1<<av_pix_fmt_descriptors[avctx->pix_fmt].log2_chroma_h;
67 switch (avctx->pix_fmt) {
69 color_space = CLRSPC_GRAY;
73 color_space = CLRSPC_GRAY;
78 color_space = CLRSPC_SRGB;
82 color_space = CLRSPC_SRGB;
86 color_space = CLRSPC_SRGB;
91 color_space = CLRSPC_SYCC;
95 color_space = CLRSPC_SYCC;
99 color_space = CLRSPC_SYCC;
102 case PIX_FMT_YUV444P:
103 color_space = CLRSPC_SYCC;
106 case PIX_FMT_YUVA420P:
107 color_space = CLRSPC_SYCC;
110 case PIX_FMT_YUV420P9:
111 case PIX_FMT_YUV422P9:
112 case PIX_FMT_YUV444P9:
113 color_space = CLRSPC_SYCC;
117 case PIX_FMT_YUV420P10:
118 case PIX_FMT_YUV422P10:
119 case PIX_FMT_YUV444P10:
120 color_space = CLRSPC_SYCC;
124 case PIX_FMT_YUV420P16:
125 case PIX_FMT_YUV422P16:
126 case PIX_FMT_YUV444P16:
127 color_space = CLRSPC_SYCC;
132 av_log(avctx, AV_LOG_ERROR, "The requested pixel format '%s' is not supported\n", av_get_pix_fmt_name(avctx->pix_fmt));
136 cmptparm = av_mallocz(numcomps * sizeof(opj_image_cmptparm_t));
138 av_log(avctx, AV_LOG_ERROR, "Not enough memory");
141 for (i = 0; i < numcomps; i++) {
142 cmptparm[i].prec = bpp;
143 cmptparm[i].bpp = bpp;
144 cmptparm[i].sgnd = 0;
145 cmptparm[i].dx = sub_dx[i];
146 cmptparm[i].dy = sub_dy[i];
147 cmptparm[i].w = avctx->width / sub_dx[i];
148 cmptparm[i].h = avctx->height / sub_dy[i];
151 img = opj_image_create(numcomps, cmptparm, color_space);
156 static av_cold int libopenjpeg_encode_init(AVCodecContext *avctx)
158 LibOpenJPEGContext *ctx = avctx->priv_data;
160 opj_set_default_encoder_parameters(&ctx->enc_params);
161 ctx->enc_params.tcp_numlayers = 1;
162 ctx->enc_params.tcp_rates[0] = FFMAX(avctx->compression_level, 0) * 2;
163 ctx->enc_params.cp_disto_alloc = 1;
165 ctx->compress = opj_create_compress(CODEC_J2K);
166 if (!ctx->compress) {
167 av_log(avctx, AV_LOG_ERROR, "Error creating the compressor\n");
168 return AVERROR(ENOMEM);
171 avctx->coded_frame = avcodec_alloc_frame();
172 if (!avctx->coded_frame) {
173 av_freep(&ctx->compress);
174 av_log(avctx, AV_LOG_ERROR, "Error allocating coded frame\n");
175 return AVERROR(ENOMEM);
178 ctx->image = mj2_create_image(avctx, &ctx->enc_params);
180 av_freep(&ctx->compress);
181 av_freep(&avctx->coded_frame);
182 av_log(avctx, AV_LOG_ERROR, "Error creating the mj2 image\n");
183 return AVERROR(EINVAL);
186 memset(&ctx->event_mgr, 0, sizeof(opj_event_mgr_t));
187 ctx->event_mgr.error_handler = error_callback;
188 ctx->event_mgr.warning_handler = warning_callback;
189 ctx->event_mgr.info_handler = NULL;
190 opj_set_event_mgr((opj_common_ptr)ctx->compress, &ctx->event_mgr, avctx);
195 static int libopenjpeg_copy_rgba(AVCodecContext *avctx, AVFrame *frame, opj_image_t *image, int numcomps)
201 av_assert0(numcomps == 1 || numcomps == 3 || numcomps == 4);
203 for (compno = 0; compno < numcomps; ++compno) {
204 if (image->comps[compno].w > frame->linesize[0] / numcomps) {
209 for (compno = 0; compno < numcomps; ++compno) {
210 for (y = 0; y < avctx->height; ++y) {
211 for (x = 0; x < avctx->width; ++x) {
212 image->comps[compno].data[y * avctx->width + x] = frame->data[0][y * frame->linesize[0] + x * numcomps + compno];
220 static int libopenjpeg_copy_rgb16(AVCodecContext *avctx, AVFrame *frame, opj_image_t *image, int numcomps)
225 uint16_t *frame_ptr = (uint16_t*)frame->data[0];
227 av_assert0(numcomps == 1 || numcomps == 3);
229 for (compno = 0; compno < numcomps; ++compno) {
230 if (image->comps[compno].w > frame->linesize[0] / numcomps) {
235 for (compno = 0; compno < numcomps; ++compno) {
236 for (y = 0; y < avctx->height; ++y) {
237 for (x = 0; x < avctx->width; ++x) {
238 image->comps[compno].data[y * avctx->width + x] = frame_ptr[y * frame->linesize[0] / 2 + x * numcomps + compno];
246 static int libopenjpeg_copy_yuv8(AVCodecContext *avctx, AVFrame *frame, opj_image_t *image)
253 const int numcomps = avctx->pix_fmt == PIX_FMT_YUVA420P ? 4 : 3;
255 for (compno = 0; compno < numcomps; ++compno) {
256 if (image->comps[compno].w > frame->linesize[compno]) {
261 for (compno = 0; compno < numcomps; ++compno) {
262 width = avctx->width / image->comps[compno].dx;
263 height = avctx->height / image->comps[compno].dy;
264 for (y = 0; y < height; ++y) {
265 for (x = 0; x < width; ++x) {
266 image->comps[compno].data[y * width + x] = frame->data[compno][y * frame->linesize[compno] + x];
274 static int libopenjpeg_copy_yuv16(AVCodecContext *avctx, AVFrame *frame, opj_image_t *image)
281 const int numcomps = 3;
284 for (compno = 0; compno < numcomps; ++compno) {
285 if (image->comps[compno].w > frame->linesize[compno]) {
290 for (compno = 0; compno < numcomps; ++compno) {
291 width = avctx->width / image->comps[compno].dx;
292 height = avctx->height / image->comps[compno].dy;
293 frame_ptr = (uint16_t*)frame->data[compno];
294 for (y = 0; y < height; ++y) {
295 for (x = 0; x < width; ++x) {
296 image->comps[compno].data[y * width + x] = frame_ptr[y * (frame->linesize[compno] / 2) + x];
304 static int libopenjpeg_encode_frame(AVCodecContext *avctx, uint8_t *buf, int buf_size, void *data)
306 AVFrame *frame = data;
307 LibOpenJPEGContext *ctx = avctx->priv_data;
308 opj_cinfo_t *compress = ctx->compress;
309 opj_image_t *image = ctx->image;
314 // x0, y0 is the top left corner of the image
315 // x1, y1 is the width, height of the reference grid
318 image->x1 = (avctx->width - 1) * ctx->enc_params.subsampling_dx + 1;
319 image->y1 = (avctx->height - 1) * ctx->enc_params.subsampling_dy + 1;
321 switch (avctx->pix_fmt) {
323 cpyresult = libopenjpeg_copy_rgba(avctx, frame, image, 1);
326 cpyresult = libopenjpeg_copy_rgb16(avctx, frame, image, 1);
329 cpyresult = libopenjpeg_copy_rgba(avctx, frame, image, 3);
332 cpyresult = libopenjpeg_copy_rgba(avctx, frame, image, 4);
335 cpyresult = libopenjpeg_copy_rgb16(avctx, frame, image, 3);
337 case PIX_FMT_YUV420P:
338 case PIX_FMT_YUV422P:
339 case PIX_FMT_YUV440P:
340 case PIX_FMT_YUV444P:
341 case PIX_FMT_YUVA420P:
342 cpyresult = libopenjpeg_copy_yuv8(avctx, frame, image);
344 case PIX_FMT_YUV420P9:
345 case PIX_FMT_YUV420P10:
346 case PIX_FMT_YUV420P16:
347 case PIX_FMT_YUV422P9:
348 case PIX_FMT_YUV422P10:
349 case PIX_FMT_YUV422P16:
350 case PIX_FMT_YUV444P9:
351 case PIX_FMT_YUV444P10:
352 case PIX_FMT_YUV444P16:
353 cpyresult = libopenjpeg_copy_yuv16(avctx, frame, image);
356 av_log(avctx, AV_LOG_ERROR, "The frame's pixel format '%s' is not supported\n", av_get_pix_fmt_name(avctx->pix_fmt));
357 return AVERROR(EINVAL);
362 av_log(avctx, AV_LOG_ERROR, "Could not copy the frame data to the internal image buffer\n");
366 opj_setup_encoder(compress, &ctx->enc_params, image);
367 stream = opj_cio_open((opj_common_ptr)compress, NULL, 0);
369 av_log(avctx, AV_LOG_ERROR, "Error creating the cio stream\n");
370 return AVERROR(ENOMEM);
373 if (!opj_encode(compress, stream, image, NULL)) {
374 opj_cio_close(stream);
375 av_log(avctx, AV_LOG_ERROR, "Error during the opj encode\n");
379 len = cio_tell(stream);
380 if (len > buf_size) {
381 opj_cio_close(stream);
382 av_log(avctx, AV_LOG_ERROR, "Error with buf_size, not large enough to hold the frame\n");
386 memcpy(buf, stream->buffer, len);
387 opj_cio_close(stream);
391 static av_cold int libopenjpeg_encode_close(AVCodecContext *avctx)
393 LibOpenJPEGContext *ctx = avctx->priv_data;
395 opj_destroy_compress(ctx->compress);
396 opj_image_destroy(ctx->image);
397 av_freep(&avctx->coded_frame);
402 AVCodec ff_libopenjpeg_encoder = {
403 .name = "libopenjpeg",
404 .type = AVMEDIA_TYPE_VIDEO,
405 .id = CODEC_ID_JPEG2000,
406 .priv_data_size = sizeof(LibOpenJPEGContext),
407 .init = libopenjpeg_encode_init,
408 .encode = libopenjpeg_encode_frame,
409 .close = libopenjpeg_encode_close,
411 .pix_fmts = (const enum PixelFormat[]){PIX_FMT_RGB24,PIX_FMT_RGBA,PIX_FMT_RGB48,
412 PIX_FMT_GRAY8,PIX_FMT_GRAY16,
413 PIX_FMT_YUV420P,PIX_FMT_YUV422P,PIX_FMT_YUVA420P,
414 PIX_FMT_YUV440P,PIX_FMT_YUV444P,
415 PIX_FMT_YUV420P9,PIX_FMT_YUV422P9,PIX_FMT_YUV444P9,
416 PIX_FMT_YUV420P10,PIX_FMT_YUV422P10,PIX_FMT_YUV444P10,
417 PIX_FMT_YUV420P16,PIX_FMT_YUV422P16,PIX_FMT_YUV444P16,
419 .long_name = NULL_IF_CONFIG_SMALL("OpenJPEG based JPEG 2000 encoder"),