/*
* JPEG 2000 encoding support via OpenJPEG
* Copyright (c) 2011 Michael Bradshaw <mbradshaw@sorensonmedia.com>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* JPEG 2000 encoder using libopenjpeg
*/
#include "libavutil/imgutils.h"
#include "libavutil/avassert.h"
#include "avcodec.h"
#include "libavutil/intreadwrite.h"
#define OPJ_STATIC
#include <openjpeg.h>
typedef struct {
opj_image_t *image;
opj_cparameters_t enc_params;
opj_cinfo_t *compress;
opj_event_mgr_t event_mgr;
} LibOpenJPEGContext;
static void error_callback(const char *msg, void *data)
{
av_log((AVCodecContext*)data, AV_LOG_ERROR, "libopenjpeg: %s\n", msg);
}
static void warning_callback(const char *msg, void *data)
{
av_log((AVCodecContext*)data, AV_LOG_WARNING, "libopenjpeg: %s\n", msg);
}
static opj_image_t *mj2_create_image(AVCodecContext *avctx, opj_cparameters_t *parameters)
{
opj_image_cmptparm_t *cmptparm;
opj_image_t *img;
int i;
int bpp = 8;
int sub_dx[4];
int sub_dy[4];
int numcomps = 0;
OPJ_COLOR_SPACE color_space = CLRSPC_UNKNOWN;
sub_dx[0] = sub_dx[3] = 1;
sub_dy[0] = sub_dy[3] = 1;
sub_dx[1] = sub_dx[2] = 1<<av_pix_fmt_descriptors[avctx->pix_fmt].log2_chroma_w;
sub_dy[1] = sub_dy[2] = 1<<av_pix_fmt_descriptors[avctx->pix_fmt].log2_chroma_h;
switch (avctx->pix_fmt) {
case PIX_FMT_GRAY8:
color_space = CLRSPC_GRAY;
numcomps = 1;
break;
case PIX_FMT_RGB24:
color_space = CLRSPC_SRGB;
numcomps = 3;
break;
case PIX_FMT_RGBA:
color_space = CLRSPC_SRGB;
numcomps = 4;
break;
case PIX_FMT_YUV420P:
color_space = CLRSPC_SYCC;
numcomps = 3;
break;
case PIX_FMT_YUV422P:
color_space = CLRSPC_SYCC;
numcomps = 3;
break;
case PIX_FMT_YUV440P:
color_space = CLRSPC_SYCC;
numcomps = 3;
break;
case PIX_FMT_YUV444P:
color_space = CLRSPC_SYCC;
numcomps = 3;
break;
case PIX_FMT_YUVA420P:
color_space = CLRSPC_SYCC;
numcomps = 4;
break;
case PIX_FMT_YUV420P9:
case PIX_FMT_YUV422P9:
case PIX_FMT_YUV444P9:
color_space = CLRSPC_SYCC;
numcomps = 3;
bpp = 9;
break;
case PIX_FMT_YUV420P10:
case PIX_FMT_YUV422P10:
case PIX_FMT_YUV444P10:
color_space = CLRSPC_SYCC;
numcomps = 3;
bpp = 10;
break;
case PIX_FMT_YUV420P16:
case PIX_FMT_YUV422P16:
case PIX_FMT_YUV444P16:
color_space = CLRSPC_SYCC;
numcomps = 3;
bpp = 16;
break;
default:
av_log(avctx, AV_LOG_ERROR, "The requested pixel format '%s' is not supported\n", av_get_pix_fmt_name(avctx->pix_fmt));
return NULL;
}
cmptparm = av_mallocz(numcomps * sizeof(opj_image_cmptparm_t));
if (!cmptparm) {
av_log(avctx, AV_LOG_ERROR, "Not enough memory");
return NULL;
}
for (i = 0; i < numcomps; i++) {
cmptparm[i].prec = bpp;
cmptparm[i].bpp = bpp;
cmptparm[i].sgnd = 0;
cmptparm[i].dx = sub_dx[i];
cmptparm[i].dy = sub_dy[i];
cmptparm[i].w = avctx->width / sub_dx[i];
cmptparm[i].h = avctx->height / sub_dy[i];
}
img = opj_image_create(numcomps, cmptparm, color_space);
av_freep(&cmptparm);
return img;
}
static av_cold int libopenjpeg_encode_init(AVCodecContext *avctx)
{
LibOpenJPEGContext *ctx = avctx->priv_data;
opj_set_default_encoder_parameters(&ctx->enc_params);
ctx->enc_params.tcp_numlayers = 1;
ctx->enc_params.tcp_rates[0] = FFMAX(avctx->compression_level, 0) * 2;
ctx->enc_params.cp_disto_alloc = 1;
ctx->compress = opj_create_compress(CODEC_J2K);
if (!ctx->compress) {
av_log(avctx, AV_LOG_ERROR, "Error creating the compressor\n");
return AVERROR(ENOMEM);
}
avctx->coded_frame = avcodec_alloc_frame();
if (!avctx->coded_frame) {
av_freep(&ctx->compress);
av_log(avctx, AV_LOG_ERROR, "Error allocating coded frame\n");
return AVERROR(ENOMEM);
}
ctx->image = mj2_create_image(avctx, &ctx->enc_params);
if (!ctx->image) {
av_freep(&ctx->compress);
av_freep(&avctx->coded_frame);
av_log(avctx, AV_LOG_ERROR, "Error creating the mj2 image\n");
return AVERROR(EINVAL);
}
memset(&ctx->event_mgr, 0, sizeof(opj_event_mgr_t));
ctx->event_mgr.error_handler = error_callback;
ctx->event_mgr.warning_handler = warning_callback;
ctx->event_mgr.info_handler = NULL;
opj_set_event_mgr((opj_common_ptr)ctx->compress, &ctx->event_mgr, avctx);
return 0;
}
static int libopenjpeg_copy_rgba(AVCodecContext *avctx, AVFrame *frame, opj_image_t *image, int numcomps)
{
int compno;
int x;
int y;
av_assert0(numcomps == 1 || numcomps == 3 || numcomps == 4);
for (compno = 0; compno < numcomps; ++compno) {
if (image->comps[compno].w > frame->linesize[0] / numcomps) {
return 0;
}
}
for (compno = 0; compno < numcomps; ++compno) {
for (y = 0; y < avctx->height; ++y) {
for (x = 0; x < avctx->width; ++x) {
image->comps[compno].data[y * avctx->width + x] = frame->data[0][y * frame->linesize[0] + x * numcomps + compno];
}
}
}
return 1;
}
static int libopenjpeg_copy_yuv8(AVCodecContext *avctx, AVFrame *frame, opj_image_t *image)
{
int compno;
int x;
int y;
int width;
int height;
const int numcomps = avctx->pix_fmt == PIX_FMT_YUVA420P ? 4 : 3;
for (compno = 0; compno < numcomps; ++compno) {
if (image->comps[compno].w > frame->linesize[compno]) {
return 0;
}
}
for (compno = 0; compno < numcomps; ++compno) {
width = avctx->width / image->comps[compno].dx;
height = avctx->height / image->comps[compno].dy;
for (y = 0; y < height; ++y) {
for (x = 0; x < width; ++x) {
image->comps[compno].data[y * width + x] = frame->data[compno][y * frame->linesize[compno] + x];
}
}
}
return 1;
}
static int libopenjpeg_copy_yuv16(AVCodecContext *avctx, AVFrame *frame, opj_image_t *image)
{
int compno;
int x;
int y;
int width;
int height;
const int numcomps = 3;
uint16_t *frame_ptr;
for (compno = 0; compno < numcomps; ++compno) {
if (image->comps[compno].w > frame->linesize[compno]) {
return 0;
}
}
for (compno = 0; compno < numcomps; ++compno) {
width = avctx->width / image->comps[compno].dx;
height = avctx->height / image->comps[compno].dy;
frame_ptr = (uint16_t*)frame->data[compno];
for (y = 0; y < height; ++y) {
for (x = 0; x < width; ++x) {
image->comps[compno].data[y * width + x] = frame_ptr[y * (frame->linesize[compno] / 2) + x];
}
}
}
return 1;
}
static int libopenjpeg_encode_frame(AVCodecContext *avctx, uint8_t *buf, int buf_size, void *data)
{
AVFrame *frame = data;
LibOpenJPEGContext *ctx = avctx->priv_data;
opj_cinfo_t *compress = ctx->compress;
opj_image_t *image = ctx->image;
opj_cio_t *stream;
int cpyresult = 0;
int len = 0;
// x0, y0 is the top left corner of the image
// x1, y1 is the width, height of the reference grid
image->x0 = 0;
image->y0 = 0;
image->x1 = (avctx->width - 1) * ctx->enc_params.subsampling_dx + 1;
image->y1 = (avctx->height - 1) * ctx->enc_params.subsampling_dy + 1;
switch (avctx->pix_fmt) {
case PIX_FMT_GRAY8:
cpyresult = libopenjpeg_copy_rgba(avctx, frame, image, 1);
break;
case PIX_FMT_RGB24:
cpyresult = libopenjpeg_copy_rgba(avctx, frame, image, 3);
break;
case PIX_FMT_RGBA:
cpyresult = libopenjpeg_copy_rgba(avctx, frame, image, 4);
break;
case PIX_FMT_YUV420P:
case PIX_FMT_YUV422P:
case PIX_FMT_YUV440P:
case PIX_FMT_YUV444P:
case PIX_FMT_YUVA420P:
cpyresult = libopenjpeg_copy_yuv8(avctx, frame, image);
break;
case PIX_FMT_YUV420P9:
case PIX_FMT_YUV420P10:
case PIX_FMT_YUV420P16:
case PIX_FMT_YUV422P9:
case PIX_FMT_YUV422P10:
case PIX_FMT_YUV422P16:
case PIX_FMT_YUV444P9:
case PIX_FMT_YUV444P10:
case PIX_FMT_YUV444P16:
cpyresult = libopenjpeg_copy_yuv16(avctx, frame, image);
break;
default:
av_log(avctx, AV_LOG_ERROR, "The frame's pixel format '%s' is not supported\n", av_get_pix_fmt_name(avctx->pix_fmt));
return AVERROR(EINVAL);
break;
}
if (!cpyresult) {
av_log(avctx, AV_LOG_ERROR, "Could not copy the frame data to the internal image buffer\n");
return -1;
}
opj_setup_encoder(compress, &ctx->enc_params, image);
stream = opj_cio_open((opj_common_ptr)compress, NULL, 0);
if (!stream) {
av_log(avctx, AV_LOG_ERROR, "Error creating the cio stream\n");
return AVERROR(ENOMEM);
}
if (!opj_encode(compress, stream, image, NULL)) {
opj_cio_close(stream);
av_log(avctx, AV_LOG_ERROR, "Error during the opj encode\n");
return -1;
}
len = cio_tell(stream);
if (len > buf_size) {
opj_cio_close(stream);
av_log(avctx, AV_LOG_ERROR, "Error with buf_size, not large enough to hold the frame\n");
return -1;
}
memcpy(buf, stream->buffer, len);
opj_cio_close(stream);
return len;
}
static av_cold int libopenjpeg_encode_close(AVCodecContext *avctx)
{
LibOpenJPEGContext *ctx = avctx->priv_data;
opj_destroy_compress(ctx->compress);
opj_image_destroy(ctx->image);
av_freep(&avctx->coded_frame);
return 0 ;
}
AVCodec ff_libopenjpeg_encoder = {
.name = "libopenjpeg",
.type = AVMEDIA_TYPE_VIDEO,
.id = CODEC_ID_JPEG2000,
.priv_data_size = sizeof(LibOpenJPEGContext),
.init = libopenjpeg_encode_init,
.encode = libopenjpeg_encode_frame,
.close = libopenjpeg_encode_close,
.decode = NULL,
.capabilities = 0,
.pix_fmts = (const enum PixelFormat[]){PIX_FMT_RGB24,PIX_FMT_RGBA,PIX_FMT_GRAY8,
PIX_FMT_YUV420P,PIX_FMT_YUV422P,PIX_FMT_YUVA420P,
PIX_FMT_YUV440P,PIX_FMT_YUV444P,
PIX_FMT_YUV420P9,PIX_FMT_YUV422P9,PIX_FMT_YUV444P9,
PIX_FMT_YUV420P10,PIX_FMT_YUV422P10,PIX_FMT_YUV444P10,
PIX_FMT_YUV420P16,PIX_FMT_YUV422P16,PIX_FMT_YUV444P16,
PIX_FMT_NONE},
.long_name = NULL_IF_CONFIG_SMALL("OpenJPEG based JPEG 2000 encoder"),
} ;