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_SRGB;
77 color_space = CLRSPC_SRGB;
81 color_space = CLRSPC_SRGB;
86 color_space = CLRSPC_SYCC;
90 color_space = CLRSPC_SYCC;
94 color_space = CLRSPC_SYCC;
98 color_space = CLRSPC_SYCC;
101 case PIX_FMT_YUVA420P:
102 color_space = CLRSPC_SYCC;
105 case PIX_FMT_YUV420P9:
106 case PIX_FMT_YUV422P9:
107 case PIX_FMT_YUV444P9:
108 color_space = CLRSPC_SYCC;
112 case PIX_FMT_YUV420P10:
113 case PIX_FMT_YUV422P10:
114 case PIX_FMT_YUV444P10:
115 color_space = CLRSPC_SYCC;
119 case PIX_FMT_YUV420P16:
120 case PIX_FMT_YUV422P16:
121 case PIX_FMT_YUV444P16:
122 color_space = CLRSPC_SYCC;
127 av_log(avctx, AV_LOG_ERROR, "The requested pixel format '%s' is not supported\n", av_get_pix_fmt_name(avctx->pix_fmt));
131 cmptparm = av_mallocz(numcomps * sizeof(opj_image_cmptparm_t));
133 av_log(avctx, AV_LOG_ERROR, "Not enough memory");
136 for (i = 0; i < numcomps; i++) {
137 cmptparm[i].prec = bpp;
138 cmptparm[i].bpp = bpp;
139 cmptparm[i].sgnd = 0;
140 cmptparm[i].dx = sub_dx[i];
141 cmptparm[i].dy = sub_dy[i];
142 cmptparm[i].w = avctx->width / sub_dx[i];
143 cmptparm[i].h = avctx->height / sub_dy[i];
146 img = opj_image_create(numcomps, cmptparm, color_space);
151 static av_cold int libopenjpeg_encode_init(AVCodecContext *avctx)
153 LibOpenJPEGContext *ctx = avctx->priv_data;
155 opj_set_default_encoder_parameters(&ctx->enc_params);
156 ctx->enc_params.tcp_numlayers = 1;
157 ctx->enc_params.tcp_rates[0] = FFMAX(avctx->compression_level, 0) * 2;
158 ctx->enc_params.cp_disto_alloc = 1;
160 ctx->compress = opj_create_compress(CODEC_J2K);
161 if (!ctx->compress) {
162 av_log(avctx, AV_LOG_ERROR, "Error creating the compressor\n");
163 return AVERROR(ENOMEM);
166 avctx->coded_frame = avcodec_alloc_frame();
167 if (!avctx->coded_frame) {
168 av_freep(&ctx->compress);
169 av_log(avctx, AV_LOG_ERROR, "Error allocating coded frame\n");
170 return AVERROR(ENOMEM);
173 ctx->image = mj2_create_image(avctx, &ctx->enc_params);
175 av_freep(&ctx->compress);
176 av_freep(&avctx->coded_frame);
177 av_log(avctx, AV_LOG_ERROR, "Error creating the mj2 image\n");
178 return AVERROR(EINVAL);
181 memset(&ctx->event_mgr, 0, sizeof(opj_event_mgr_t));
182 ctx->event_mgr.error_handler = error_callback;
183 ctx->event_mgr.warning_handler = warning_callback;
184 ctx->event_mgr.info_handler = NULL;
185 opj_set_event_mgr((opj_common_ptr)ctx->compress, &ctx->event_mgr, avctx);
190 static int libopenjpeg_copy_rgba(AVCodecContext *avctx, AVFrame *frame, opj_image_t *image, int numcomps)
196 av_assert0(numcomps == 1 || numcomps == 3 || numcomps == 4);
198 for (compno = 0; compno < numcomps; ++compno) {
199 if (image->comps[compno].w > frame->linesize[0] / numcomps) {
204 for (compno = 0; compno < numcomps; ++compno) {
205 for (y = 0; y < avctx->height; ++y) {
206 for (x = 0; x < avctx->width; ++x) {
207 image->comps[compno].data[y * avctx->width + x] = frame->data[0][y * frame->linesize[0] + x * numcomps + compno];
215 static int libopenjpeg_copy_rgb16(AVCodecContext *avctx, AVFrame *frame, opj_image_t *image, int numcomps)
220 uint16_t *frame_ptr = (uint16_t*)frame->data[0];
222 av_assert0(numcomps == 3);
224 for (compno = 0; compno < numcomps; ++compno) {
225 if (image->comps[compno].w > frame->linesize[0] / numcomps) {
230 for (compno = 0; compno < numcomps; ++compno) {
231 for (y = 0; y < avctx->height; ++y) {
232 for (x = 0; x < avctx->width; ++x) {
233 image->comps[compno].data[y * avctx->width + x] = frame_ptr[y * frame->linesize[0] / 2 + x * numcomps + compno];
241 static int libopenjpeg_copy_yuv8(AVCodecContext *avctx, AVFrame *frame, opj_image_t *image)
248 const int numcomps = avctx->pix_fmt == PIX_FMT_YUVA420P ? 4 : 3;
250 for (compno = 0; compno < numcomps; ++compno) {
251 if (image->comps[compno].w > frame->linesize[compno]) {
256 for (compno = 0; compno < numcomps; ++compno) {
257 width = avctx->width / image->comps[compno].dx;
258 height = avctx->height / image->comps[compno].dy;
259 for (y = 0; y < height; ++y) {
260 for (x = 0; x < width; ++x) {
261 image->comps[compno].data[y * width + x] = frame->data[compno][y * frame->linesize[compno] + x];
269 static int libopenjpeg_copy_yuv16(AVCodecContext *avctx, AVFrame *frame, opj_image_t *image)
276 const int numcomps = 3;
279 for (compno = 0; compno < numcomps; ++compno) {
280 if (image->comps[compno].w > frame->linesize[compno]) {
285 for (compno = 0; compno < numcomps; ++compno) {
286 width = avctx->width / image->comps[compno].dx;
287 height = avctx->height / image->comps[compno].dy;
288 frame_ptr = (uint16_t*)frame->data[compno];
289 for (y = 0; y < height; ++y) {
290 for (x = 0; x < width; ++x) {
291 image->comps[compno].data[y * width + x] = frame_ptr[y * (frame->linesize[compno] / 2) + x];
299 static int libopenjpeg_encode_frame(AVCodecContext *avctx, uint8_t *buf, int buf_size, void *data)
301 AVFrame *frame = data;
302 LibOpenJPEGContext *ctx = avctx->priv_data;
303 opj_cinfo_t *compress = ctx->compress;
304 opj_image_t *image = ctx->image;
309 // x0, y0 is the top left corner of the image
310 // x1, y1 is the width, height of the reference grid
313 image->x1 = (avctx->width - 1) * ctx->enc_params.subsampling_dx + 1;
314 image->y1 = (avctx->height - 1) * ctx->enc_params.subsampling_dy + 1;
316 switch (avctx->pix_fmt) {
318 cpyresult = libopenjpeg_copy_rgba(avctx, frame, image, 1);
321 cpyresult = libopenjpeg_copy_rgba(avctx, frame, image, 3);
324 cpyresult = libopenjpeg_copy_rgba(avctx, frame, image, 4);
327 cpyresult = libopenjpeg_copy_rgb16(avctx, frame, image, 3);
329 case PIX_FMT_YUV420P:
330 case PIX_FMT_YUV422P:
331 case PIX_FMT_YUV440P:
332 case PIX_FMT_YUV444P:
333 case PIX_FMT_YUVA420P:
334 cpyresult = libopenjpeg_copy_yuv8(avctx, frame, image);
336 case PIX_FMT_YUV420P9:
337 case PIX_FMT_YUV420P10:
338 case PIX_FMT_YUV420P16:
339 case PIX_FMT_YUV422P9:
340 case PIX_FMT_YUV422P10:
341 case PIX_FMT_YUV422P16:
342 case PIX_FMT_YUV444P9:
343 case PIX_FMT_YUV444P10:
344 case PIX_FMT_YUV444P16:
345 cpyresult = libopenjpeg_copy_yuv16(avctx, frame, image);
348 av_log(avctx, AV_LOG_ERROR, "The frame's pixel format '%s' is not supported\n", av_get_pix_fmt_name(avctx->pix_fmt));
349 return AVERROR(EINVAL);
354 av_log(avctx, AV_LOG_ERROR, "Could not copy the frame data to the internal image buffer\n");
358 opj_setup_encoder(compress, &ctx->enc_params, image);
359 stream = opj_cio_open((opj_common_ptr)compress, NULL, 0);
361 av_log(avctx, AV_LOG_ERROR, "Error creating the cio stream\n");
362 return AVERROR(ENOMEM);
365 if (!opj_encode(compress, stream, image, NULL)) {
366 opj_cio_close(stream);
367 av_log(avctx, AV_LOG_ERROR, "Error during the opj encode\n");
371 len = cio_tell(stream);
372 if (len > buf_size) {
373 opj_cio_close(stream);
374 av_log(avctx, AV_LOG_ERROR, "Error with buf_size, not large enough to hold the frame\n");
378 memcpy(buf, stream->buffer, len);
379 opj_cio_close(stream);
383 static av_cold int libopenjpeg_encode_close(AVCodecContext *avctx)
385 LibOpenJPEGContext *ctx = avctx->priv_data;
387 opj_destroy_compress(ctx->compress);
388 opj_image_destroy(ctx->image);
389 av_freep(&avctx->coded_frame);
394 AVCodec ff_libopenjpeg_encoder = {
395 .name = "libopenjpeg",
396 .type = AVMEDIA_TYPE_VIDEO,
397 .id = CODEC_ID_JPEG2000,
398 .priv_data_size = sizeof(LibOpenJPEGContext),
399 .init = libopenjpeg_encode_init,
400 .encode = libopenjpeg_encode_frame,
401 .close = libopenjpeg_encode_close,
403 .pix_fmts = (const enum PixelFormat[]){PIX_FMT_RGB24,PIX_FMT_RGBA,PIX_FMT_RGB48,PIX_FMT_GRAY8,
404 PIX_FMT_YUV420P,PIX_FMT_YUV422P,PIX_FMT_YUVA420P,
405 PIX_FMT_YUV440P,PIX_FMT_YUV444P,
406 PIX_FMT_YUV420P9,PIX_FMT_YUV422P9,PIX_FMT_YUV444P9,
407 PIX_FMT_YUV420P10,PIX_FMT_YUV422P10,PIX_FMT_YUV444P10,
408 PIX_FMT_YUV420P16,PIX_FMT_YUV422P16,PIX_FMT_YUV444P16,
410 .long_name = NULL_IF_CONFIG_SMALL("OpenJPEG based JPEG 2000 encoder"),