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;
77 color_space = CLRSPC_GRAY;
82 color_space = CLRSPC_SRGB;
86 color_space = CLRSPC_SRGB;
90 color_space = CLRSPC_SRGB;
95 color_space = CLRSPC_SRGB;
100 color_space = CLRSPC_SYCC;
103 case PIX_FMT_YUV422P:
104 color_space = CLRSPC_SYCC;
107 case PIX_FMT_YUV440P:
108 color_space = CLRSPC_SYCC;
111 case PIX_FMT_YUV444P:
112 color_space = CLRSPC_SYCC;
115 case PIX_FMT_YUVA420P:
116 color_space = CLRSPC_SYCC;
119 case PIX_FMT_YUV420P9:
120 case PIX_FMT_YUV422P9:
121 case PIX_FMT_YUV444P9:
122 color_space = CLRSPC_SYCC;
126 case PIX_FMT_YUV420P10:
127 case PIX_FMT_YUV422P10:
128 case PIX_FMT_YUV444P10:
129 color_space = CLRSPC_SYCC;
133 case PIX_FMT_YUV420P16:
134 case PIX_FMT_YUV422P16:
135 case PIX_FMT_YUV444P16:
136 color_space = CLRSPC_SYCC;
141 av_log(avctx, AV_LOG_ERROR, "The requested pixel format '%s' is not supported\n", av_get_pix_fmt_name(avctx->pix_fmt));
145 cmptparm = av_mallocz(numcomps * sizeof(opj_image_cmptparm_t));
147 av_log(avctx, AV_LOG_ERROR, "Not enough memory");
150 for (i = 0; i < numcomps; i++) {
151 cmptparm[i].prec = bpp;
152 cmptparm[i].bpp = bpp;
153 cmptparm[i].sgnd = 0;
154 cmptparm[i].dx = sub_dx[i];
155 cmptparm[i].dy = sub_dy[i];
156 cmptparm[i].w = avctx->width / sub_dx[i];
157 cmptparm[i].h = avctx->height / sub_dy[i];
160 img = opj_image_create(numcomps, cmptparm, color_space);
165 static av_cold int libopenjpeg_encode_init(AVCodecContext *avctx)
167 LibOpenJPEGContext *ctx = avctx->priv_data;
169 opj_set_default_encoder_parameters(&ctx->enc_params);
170 ctx->enc_params.tcp_numlayers = 1;
171 ctx->enc_params.tcp_rates[0] = FFMAX(avctx->compression_level, 0) * 2;
172 ctx->enc_params.cp_disto_alloc = 1;
174 ctx->compress = opj_create_compress(CODEC_J2K);
175 if (!ctx->compress) {
176 av_log(avctx, AV_LOG_ERROR, "Error creating the compressor\n");
177 return AVERROR(ENOMEM);
180 avctx->coded_frame = avcodec_alloc_frame();
181 if (!avctx->coded_frame) {
182 av_freep(&ctx->compress);
183 av_log(avctx, AV_LOG_ERROR, "Error allocating coded frame\n");
184 return AVERROR(ENOMEM);
187 ctx->image = mj2_create_image(avctx, &ctx->enc_params);
189 av_freep(&ctx->compress);
190 av_freep(&avctx->coded_frame);
191 av_log(avctx, AV_LOG_ERROR, "Error creating the mj2 image\n");
192 return AVERROR(EINVAL);
195 memset(&ctx->event_mgr, 0, sizeof(opj_event_mgr_t));
196 ctx->event_mgr.error_handler = error_callback;
197 ctx->event_mgr.warning_handler = warning_callback;
198 ctx->event_mgr.info_handler = NULL;
199 opj_set_event_mgr((opj_common_ptr)ctx->compress, &ctx->event_mgr, avctx);
204 static int libopenjpeg_copy_packed8(AVCodecContext *avctx, AVFrame *frame, opj_image_t *image)
211 const int numcomps = image->numcomps;
213 for (compno = 0; compno < numcomps; ++compno) {
214 if (image->comps[compno].w > frame->linesize[0] / numcomps) {
215 av_log(avctx, AV_LOG_ERROR, "Error: frame's linesize is too small for the image\n");
220 for (compno = 0; compno < numcomps; ++compno) {
221 for (y = 0; y < avctx->height; ++y) {
222 image_index = y * avctx->width;
223 frame_index = y * frame->linesize[0] + compno;
224 for (x = 0; x < avctx->width; ++x) {
225 image->comps[compno].data[image_index++] = frame->data[0][frame_index];
226 frame_index += numcomps;
234 static int libopenjpeg_copy_packed16(AVCodecContext *avctx, AVFrame *frame, opj_image_t *image)
241 const int numcomps = image->numcomps;
242 uint16_t *frame_ptr = (uint16_t*)frame->data[0];
244 for (compno = 0; compno < numcomps; ++compno) {
245 if (image->comps[compno].w > frame->linesize[0] / numcomps) {
246 av_log(avctx, AV_LOG_ERROR, "Error: frame's linesize is too small for the image\n");
251 for (compno = 0; compno < numcomps; ++compno) {
252 for (y = 0; y < avctx->height; ++y) {
253 image_index = y * avctx->width;
254 frame_index = y * (frame->linesize[0] / 2) + compno;
255 for (x = 0; x < avctx->width; ++x) {
256 image->comps[compno].data[image_index++] = frame_ptr[frame_index];
257 frame_index += numcomps;
265 static int libopenjpeg_copy_unpacked8(AVCodecContext *avctx, AVFrame *frame, opj_image_t *image)
274 const int numcomps = image->numcomps;
276 for (compno = 0; compno < numcomps; ++compno) {
277 if (image->comps[compno].w > frame->linesize[compno]) {
278 av_log(avctx, AV_LOG_ERROR, "Error: frame's linesize is too small for the image\n");
283 for (compno = 0; compno < numcomps; ++compno) {
284 width = avctx->width / image->comps[compno].dx;
285 height = avctx->height / image->comps[compno].dy;
286 for (y = 0; y < height; ++y) {
287 image_index = y * width;
288 frame_index = y * frame->linesize[compno];
289 for (x = 0; x < width; ++x) {
290 image->comps[compno].data[image_index++] = frame->data[compno][frame_index++];
298 static int libopenjpeg_copy_unpacked16(AVCodecContext *avctx, AVFrame *frame, opj_image_t *image)
307 const int numcomps = image->numcomps;
310 for (compno = 0; compno < numcomps; ++compno) {
311 if (image->comps[compno].w > frame->linesize[compno]) {
312 av_log(avctx, AV_LOG_ERROR, "Error: frame's linesize is too small for the image\n");
317 for (compno = 0; compno < numcomps; ++compno) {
318 width = avctx->width / image->comps[compno].dx;
319 height = avctx->height / image->comps[compno].dy;
320 frame_ptr = (uint16_t*)frame->data[compno];
321 for (y = 0; y < height; ++y) {
322 image_index = y * width;
323 frame_index = y * (frame->linesize[compno] / 2);
324 for (x = 0; x < width; ++x) {
325 image->comps[compno].data[image_index++] = frame_ptr[frame_index++];
333 static int libopenjpeg_encode_frame(AVCodecContext *avctx, uint8_t *buf, int buf_size, void *data)
335 AVFrame *frame = data;
336 LibOpenJPEGContext *ctx = avctx->priv_data;
337 opj_cinfo_t *compress = ctx->compress;
338 opj_image_t *image = ctx->image;
343 // x0, y0 is the top left corner of the image
344 // x1, y1 is the width, height of the reference grid
347 image->x1 = (avctx->width - 1) * ctx->enc_params.subsampling_dx + 1;
348 image->y1 = (avctx->height - 1) * ctx->enc_params.subsampling_dy + 1;
350 switch (avctx->pix_fmt) {
354 cpyresult = libopenjpeg_copy_packed8(avctx, frame, image);
358 cpyresult = libopenjpeg_copy_packed16(avctx, frame, image);
361 case PIX_FMT_YUV420P:
362 case PIX_FMT_YUV422P:
363 case PIX_FMT_YUV440P:
364 case PIX_FMT_YUV444P:
365 case PIX_FMT_YUVA420P:
366 cpyresult = libopenjpeg_copy_unpacked8(avctx, frame, image);
369 case PIX_FMT_YUV420P9:
370 case PIX_FMT_YUV420P10:
371 case PIX_FMT_YUV420P16:
372 case PIX_FMT_YUV422P9:
373 case PIX_FMT_YUV422P10:
374 case PIX_FMT_YUV422P16:
375 case PIX_FMT_YUV444P9:
376 case PIX_FMT_YUV444P10:
377 case PIX_FMT_YUV444P16:
378 cpyresult = libopenjpeg_copy_unpacked16(avctx, frame, image);
381 av_log(avctx, AV_LOG_ERROR, "The frame's pixel format '%s' is not supported\n", av_get_pix_fmt_name(avctx->pix_fmt));
382 return AVERROR(EINVAL);
387 av_log(avctx, AV_LOG_ERROR, "Could not copy the frame data to the internal image buffer\n");
391 opj_setup_encoder(compress, &ctx->enc_params, image);
392 stream = opj_cio_open((opj_common_ptr)compress, NULL, 0);
394 av_log(avctx, AV_LOG_ERROR, "Error creating the cio stream\n");
395 return AVERROR(ENOMEM);
398 if (!opj_encode(compress, stream, image, NULL)) {
399 opj_cio_close(stream);
400 av_log(avctx, AV_LOG_ERROR, "Error during the opj encode\n");
404 len = cio_tell(stream);
405 if (len > buf_size) {
406 opj_cio_close(stream);
407 av_log(avctx, AV_LOG_ERROR, "Error with buf_size, not large enough to hold the frame\n");
411 memcpy(buf, stream->buffer, len);
412 opj_cio_close(stream);
416 static av_cold int libopenjpeg_encode_close(AVCodecContext *avctx)
418 LibOpenJPEGContext *ctx = avctx->priv_data;
420 opj_destroy_compress(ctx->compress);
421 opj_image_destroy(ctx->image);
422 av_freep(&avctx->coded_frame);
427 AVCodec ff_libopenjpeg_encoder = {
428 .name = "libopenjpeg",
429 .type = AVMEDIA_TYPE_VIDEO,
430 .id = CODEC_ID_JPEG2000,
431 .priv_data_size = sizeof(LibOpenJPEGContext),
432 .init = libopenjpeg_encode_init,
433 .encode = libopenjpeg_encode_frame,
434 .close = libopenjpeg_encode_close,
436 .pix_fmts = (const enum PixelFormat[]){PIX_FMT_RGB24,PIX_FMT_RGBA,PIX_FMT_RGB48,PIX_FMT_RGBA64,
437 PIX_FMT_GRAY8,PIX_FMT_GRAY8A,PIX_FMT_GRAY16,
438 PIX_FMT_YUV420P,PIX_FMT_YUV422P,PIX_FMT_YUVA420P,
439 PIX_FMT_YUV440P,PIX_FMT_YUV444P,
440 PIX_FMT_YUV420P9,PIX_FMT_YUV422P9,PIX_FMT_YUV444P9,
441 PIX_FMT_YUV420P10,PIX_FMT_YUV422P10,PIX_FMT_YUV444P10,
442 PIX_FMT_YUV420P16,PIX_FMT_YUV422P16,PIX_FMT_YUV444P16,
444 .long_name = NULL_IF_CONFIG_SMALL("OpenJPEG based JPEG 2000 encoder"),