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-rw-r--r--libavcodec/libopenjpegenc.c445
1 files changed, 445 insertions, 0 deletions
diff --git a/libavcodec/libopenjpegenc.c b/libavcodec/libopenjpegenc.c
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--- /dev/null
+++ b/libavcodec/libopenjpegenc.c
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+/*
+ * 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_GRAY8A:
+ color_space = CLRSPC_GRAY;
+ numcomps = 2;
+ break;
+ case PIX_FMT_GRAY16:
+ color_space = CLRSPC_GRAY;
+ numcomps = 1;
+ bpp = 16;
+ 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_RGB48:
+ color_space = CLRSPC_SRGB;
+ numcomps = 3;
+ bpp = 16;
+ break;
+ case PIX_FMT_RGBA64:
+ color_space = CLRSPC_SRGB;
+ numcomps = 4;
+ bpp = 16;
+ 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_packed8(AVCodecContext *avctx, AVFrame *frame, opj_image_t *image)
+{
+ int compno;
+ int x;
+ int y;
+ int image_index;
+ int frame_index;
+ const int numcomps = image->numcomps;
+
+ for (compno = 0; compno < numcomps; ++compno) {
+ if (image->comps[compno].w > frame->linesize[0] / numcomps) {
+ av_log(avctx, AV_LOG_ERROR, "Error: frame's linesize is too small for the image\n");
+ return 0;
+ }
+ }
+
+ for (compno = 0; compno < numcomps; ++compno) {
+ for (y = 0; y < avctx->height; ++y) {
+ image_index = y * avctx->width;
+ frame_index = y * frame->linesize[0] + compno;
+ for (x = 0; x < avctx->width; ++x) {
+ image->comps[compno].data[image_index++] = frame->data[0][frame_index];
+ frame_index += numcomps;
+ }
+ }
+ }
+
+ return 1;
+}
+
+static int libopenjpeg_copy_packed16(AVCodecContext *avctx, AVFrame *frame, opj_image_t *image)
+{
+ int compno;
+ int x;
+ int y;
+ int image_index;
+ int frame_index;
+ const int numcomps = image->numcomps;
+ uint16_t *frame_ptr = (uint16_t*)frame->data[0];
+
+ for (compno = 0; compno < numcomps; ++compno) {
+ if (image->comps[compno].w > frame->linesize[0] / numcomps) {
+ av_log(avctx, AV_LOG_ERROR, "Error: frame's linesize is too small for the image\n");
+ return 0;
+ }
+ }
+
+ for (compno = 0; compno < numcomps; ++compno) {
+ for (y = 0; y < avctx->height; ++y) {
+ image_index = y * avctx->width;
+ frame_index = y * (frame->linesize[0] / 2) + compno;
+ for (x = 0; x < avctx->width; ++x) {
+ image->comps[compno].data[image_index++] = frame_ptr[frame_index];
+ frame_index += numcomps;
+ }
+ }
+ }
+
+ return 1;
+}
+
+static int libopenjpeg_copy_unpacked8(AVCodecContext *avctx, AVFrame *frame, opj_image_t *image)
+{
+ int compno;
+ int x;
+ int y;
+ int width;
+ int height;
+ int image_index;
+ int frame_index;
+ const int numcomps = image->numcomps;
+
+ for (compno = 0; compno < numcomps; ++compno) {
+ if (image->comps[compno].w > frame->linesize[compno]) {
+ av_log(avctx, AV_LOG_ERROR, "Error: frame's linesize is too small for the image\n");
+ 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) {
+ image_index = y * width;
+ frame_index = y * frame->linesize[compno];
+ for (x = 0; x < width; ++x) {
+ image->comps[compno].data[image_index++] = frame->data[compno][frame_index++];
+ }
+ }
+ }
+
+ return 1;
+}
+
+static int libopenjpeg_copy_unpacked16(AVCodecContext *avctx, AVFrame *frame, opj_image_t *image)
+{
+ int compno;
+ int x;
+ int y;
+ int width;
+ int height;
+ int image_index;
+ int frame_index;
+ const int numcomps = image->numcomps;
+ uint16_t *frame_ptr;
+
+ for (compno = 0; compno < numcomps; ++compno) {
+ if (image->comps[compno].w > frame->linesize[compno]) {
+ av_log(avctx, AV_LOG_ERROR, "Error: frame's linesize is too small for the image\n");
+ 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) {
+ image_index = y * width;
+ frame_index = y * (frame->linesize[compno] / 2);
+ for (x = 0; x < width; ++x) {
+ image->comps[compno].data[image_index++] = frame_ptr[frame_index++];
+ }
+ }
+ }
+
+ 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_RGB24:
+ case PIX_FMT_RGBA:
+ case PIX_FMT_GRAY8A:
+ cpyresult = libopenjpeg_copy_packed8(avctx, frame, image);
+ break;
+ case PIX_FMT_RGB48:
+ case PIX_FMT_RGBA64:
+ cpyresult = libopenjpeg_copy_packed16(avctx, frame, image);
+ break;
+ case PIX_FMT_GRAY8:
+ case PIX_FMT_YUV420P:
+ case PIX_FMT_YUV422P:
+ case PIX_FMT_YUV440P:
+ case PIX_FMT_YUV444P:
+ case PIX_FMT_YUVA420P:
+ cpyresult = libopenjpeg_copy_unpacked8(avctx, frame, image);
+ break;
+ case PIX_FMT_GRAY16:
+ 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_unpacked16(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,
+ .capabilities = 0,
+ .pix_fmts = (const enum PixelFormat[]){PIX_FMT_RGB24,PIX_FMT_RGBA,PIX_FMT_RGB48,PIX_FMT_RGBA64,
+ PIX_FMT_GRAY8,PIX_FMT_GRAY8A,PIX_FMT_GRAY16,
+ 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"),
+} ;
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