Hu Chunming / FFNvDecoder

/*
 * JPEG 2000 encoding support via OpenJPEG
 * Copyright (c) 2011 Michael Bradshaw <mjbshaw gmail 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/avassert.h"
#include "libavutil/common.h"
#include "libavutil/imgutils.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/opt.h"
#include "avcodec.h"
#include "internal.h"
#include <openjpeg.h>

typedef struct LibOpenJPEGContext {
    AVClass *avclass;
    opj_cparameters_t enc_params;
    int format;
    int profile;
    int prog_order;
    int cinema_mode;
    int numresolution;
    int irreversible;
    int disto_alloc;
    int fixed_quality;
} LibOpenJPEGContext;

static void error_callback(const char *msg, void *data)
{
    av_log(data, AV_LOG_ERROR, "%s\n", msg);
}

static void warning_callback(const char *msg, void *data)
{
    av_log(data, AV_LOG_WARNING, "%s\n", msg);
}

static void info_callback(const char *msg, void *data)
{
    av_log(data, AV_LOG_DEBUG, "%s\n", msg);
}

typedef struct PacketWriter {
    int pos;
    AVPacket *packet;
} PacketWriter;

static OPJ_SIZE_T stream_write(void *out_buffer, OPJ_SIZE_T nb_bytes, void *user_data)
{
    PacketWriter *writer = user_data;
    AVPacket *packet = writer->packet;
    int remaining = packet->size - writer->pos;
    if (nb_bytes > remaining) {
        OPJ_SIZE_T needed = nb_bytes - remaining;
        int max_growth = INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE - packet->size;
        if (needed > max_growth) {
            return (OPJ_SIZE_T)-1;
        }
        if (av_grow_packet(packet, (int)needed)) {
            return (OPJ_SIZE_T)-1;
        }
    }
    memcpy(packet->data + writer->pos, out_buffer, nb_bytes);
    writer->pos += (int)nb_bytes;
    return nb_bytes;
}

static OPJ_OFF_T stream_skip(OPJ_OFF_T nb_bytes, void *user_data)
{
    PacketWriter *writer = user_data;
    AVPacket *packet = writer->packet;
    if (nb_bytes < 0) {
        if (writer->pos == 0) {
            return (OPJ_SIZE_T)-1;
        }
        if (nb_bytes + writer->pos < 0) {
            nb_bytes = -writer->pos;
        }
    } else {
        int remaining = packet->size - writer->pos;
        if (nb_bytes > remaining) {
            OPJ_SIZE_T needed = nb_bytes - remaining;
            int max_growth = INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE - packet->size;
            if (needed > max_growth) {
                return (OPJ_SIZE_T)-1;
            }
            if (av_grow_packet(packet, (int)needed)) {
                return (OPJ_SIZE_T)-1;
            }
        }
    }
    writer->pos += (int)nb_bytes;
    return nb_bytes;
}

static OPJ_BOOL stream_seek(OPJ_OFF_T nb_bytes, void *user_data)
{
    PacketWriter *writer = user_data;
    AVPacket *packet = writer->packet;
    if (nb_bytes < 0) {
        return OPJ_FALSE;
    }
    if (nb_bytes > packet->size) {
        if (nb_bytes > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE ||
            av_grow_packet(packet, (int)nb_bytes - packet->size)) {
            return OPJ_FALSE;
        }
    }
    writer->pos = (int)nb_bytes;
    return OPJ_TRUE;
}

static void cinema_parameters(opj_cparameters_t *p)
{
    p->tile_size_on = 0;
    p->cp_tdx = 1;
    p->cp_tdy = 1;

    /* Tile part */
    p->tp_flag = 'C';
    p->tp_on = 1;

    /* Tile and Image shall be at (0, 0) */
    p->cp_tx0 = 0;
    p->cp_ty0 = 0;
    p->image_offset_x0 = 0;
    p->image_offset_y0 = 0;

    /* Codeblock size= 32 * 32 */
    p->cblockw_init = 32;
    p->cblockh_init = 32;
    p->csty |= 0x01;

    /* The progression order shall be CPRL */
    p->prog_order = OPJ_CPRL;

    /* No ROI */
    p->roi_compno = -1;

    /* No subsampling */
    p->subsampling_dx = 1;
    p->subsampling_dy = 1;

    /* 9-7 transform */
    p->irreversible = 1;

    p->tcp_mct = 1;
}

static opj_image_t *mj2_create_image(AVCodecContext *avctx, opj_cparameters_t *parameters)
{
    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
    opj_image_cmptparm_t cmptparm[4] = {{0}};
    opj_image_t *img;
    int i;
    int sub_dx[4];
    int sub_dy[4];
    int numcomps;
    OPJ_COLOR_SPACE color_space = OPJ_CLRSPC_UNKNOWN;

    sub_dx[0] = sub_dx[3] = 1;
    sub_dy[0] = sub_dy[3] = 1;
    sub_dx[1] = sub_dx[2] = 1 << desc->log2_chroma_w;
    sub_dy[1] = sub_dy[2] = 1 << desc->log2_chroma_h;

    numcomps = desc->nb_components;

    switch (avctx->pix_fmt) {
    case AV_PIX_FMT_GRAY8:
    case AV_PIX_FMT_YA8:
    case AV_PIX_FMT_GRAY10:
    case AV_PIX_FMT_GRAY12:
    case AV_PIX_FMT_GRAY14:
    case AV_PIX_FMT_GRAY16:
    case AV_PIX_FMT_YA16:
        color_space = OPJ_CLRSPC_GRAY;
        break;
    case AV_PIX_FMT_RGB24:
    case AV_PIX_FMT_RGBA:
    case AV_PIX_FMT_RGB48:
    case AV_PIX_FMT_RGBA64:
    case AV_PIX_FMT_GBR24P:
    case AV_PIX_FMT_GBRP9:
    case AV_PIX_FMT_GBRP10:
    case AV_PIX_FMT_GBRP12:
    case AV_PIX_FMT_GBRP14:
    case AV_PIX_FMT_GBRP16:
    case AV_PIX_FMT_XYZ12:
        color_space = OPJ_CLRSPC_SRGB;
        break;
    case AV_PIX_FMT_YUV410P:
    case AV_PIX_FMT_YUV411P:
    case AV_PIX_FMT_YUV420P:
    case AV_PIX_FMT_YUV422P:
    case AV_PIX_FMT_YUV440P:
    case AV_PIX_FMT_YUV444P:
    case AV_PIX_FMT_YUVA420P:
    case AV_PIX_FMT_YUVA422P:
    case AV_PIX_FMT_YUVA444P:
    case AV_PIX_FMT_YUV420P9:
    case AV_PIX_FMT_YUV422P9:
    case AV_PIX_FMT_YUV444P9:
    case AV_PIX_FMT_YUVA420P9:
    case AV_PIX_FMT_YUVA422P9:
    case AV_PIX_FMT_YUVA444P9:
    case AV_PIX_FMT_YUV420P10:
    case AV_PIX_FMT_YUV422P10:
    case AV_PIX_FMT_YUV444P10:
    case AV_PIX_FMT_YUVA420P10:
    case AV_PIX_FMT_YUVA422P10:
    case AV_PIX_FMT_YUVA444P10:
    case AV_PIX_FMT_YUV420P12:
    case AV_PIX_FMT_YUV422P12:
    case AV_PIX_FMT_YUV444P12:
    case AV_PIX_FMT_YUV420P14:
    case AV_PIX_FMT_YUV422P14:
    case AV_PIX_FMT_YUV444P14:
    case AV_PIX_FMT_YUV420P16:
    case AV_PIX_FMT_YUV422P16:
    case AV_PIX_FMT_YUV444P16:
    case AV_PIX_FMT_YUVA420P16:
    case AV_PIX_FMT_YUVA422P16:
    case AV_PIX_FMT_YUVA444P16:
        color_space = OPJ_CLRSPC_SYCC;
        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;
    }

    for (i = 0; i < numcomps; i++) {
        cmptparm[i].prec = desc->comp[i].depth;
        cmptparm[i].bpp  = desc->comp[i].depth;
        cmptparm[i].sgnd = 0;
        cmptparm[i].dx = sub_dx[i];
        cmptparm[i].dy = sub_dy[i];
        cmptparm[i].w = (avctx->width + sub_dx[i] - 1) / sub_dx[i];
        cmptparm[i].h = (avctx->height + sub_dy[i] - 1) / sub_dy[i];
    }

    img = opj_image_create(numcomps, cmptparm, color_space);

    if (!img)
        return NULL;

    // x0, y0 is the top left corner of the image
    // x1, y1 is the width, height of the reference grid
    img->x0 = 0;
    img->y0 = 0;
    img->x1 = (avctx->width  - 1) * parameters->subsampling_dx + 1;
    img->y1 = (avctx->height - 1) * parameters->subsampling_dy + 1;

    return img;
}

static av_cold int libopenjpeg_encode_init(AVCodecContext *avctx)
{
    LibOpenJPEGContext *ctx = avctx->priv_data;
    int err = 0;

    opj_set_default_encoder_parameters(&ctx->enc_params);

    switch (ctx->cinema_mode) {
    case OPJ_CINEMA2K_24:
        ctx->enc_params.rsiz = OPJ_PROFILE_CINEMA_2K;
        ctx->enc_params.max_cs_size = OPJ_CINEMA_24_CS;
        ctx->enc_params.max_comp_size = OPJ_CINEMA_24_COMP;
        break;
    case OPJ_CINEMA2K_48:
        ctx->enc_params.rsiz = OPJ_PROFILE_CINEMA_2K;
        ctx->enc_params.max_cs_size = OPJ_CINEMA_48_CS;
        ctx->enc_params.max_comp_size = OPJ_CINEMA_48_COMP;
        break;
    case OPJ_CINEMA4K_24:
        ctx->enc_params.rsiz = OPJ_PROFILE_CINEMA_4K;
        ctx->enc_params.max_cs_size = OPJ_CINEMA_24_CS;
        ctx->enc_params.max_comp_size = OPJ_CINEMA_24_COMP;
        break;
    }

    switch (ctx->profile) {
    case OPJ_CINEMA2K:
        if (ctx->enc_params.rsiz == OPJ_PROFILE_CINEMA_4K) {
            err = AVERROR(EINVAL);
            break;
        }
        ctx->enc_params.rsiz = OPJ_PROFILE_CINEMA_2K;
        break;
    case OPJ_CINEMA4K:
        if (ctx->enc_params.rsiz == OPJ_PROFILE_CINEMA_2K) {
            err = AVERROR(EINVAL);
            break;
        }
        ctx->enc_params.rsiz = OPJ_PROFILE_CINEMA_4K;
        break;
    }

    if (err) {
        av_log(avctx, AV_LOG_ERROR,
               "Invalid parameter pairing: cinema_mode and profile conflict.\n");
        return err;
    }

    if (!ctx->numresolution) {
        ctx->numresolution = 6;
        while (FFMIN(avctx->width, avctx->height) >> ctx->numresolution < 1)
            ctx->numresolution --;
    }

    ctx->enc_params.prog_order = ctx->prog_order;
    ctx->enc_params.numresolution = ctx->numresolution;
    ctx->enc_params.irreversible = ctx->irreversible;
    ctx->enc_params.cp_disto_alloc = ctx->disto_alloc;
    ctx->enc_params.cp_fixed_quality = ctx->fixed_quality;
    ctx->enc_params.tcp_numlayers = 1;
    ctx->enc_params.tcp_rates[0] = FFMAX(avctx->compression_level, 0) * 2;

    if (ctx->cinema_mode > 0) {
        cinema_parameters(&ctx->enc_params);
    }

    return 0;
}

static int libopenjpeg_copy_packed8(AVCodecContext *avctx, const AVFrame *frame, opj_image_t *image)
{
    int compno;
    int x;
    int y;
    int *image_line;
    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_line = image->comps[compno].data + y * image->comps[compno].w;
            frame_index = y * frame->linesize[0] + compno;
            for (x = 0; x < avctx->width; ++x) {
                image_line[x] = frame->data[0][frame_index];
                frame_index += numcomps;
            }
            for (; x < image->comps[compno].w; ++x) {
                image_line[x] = image_line[x - 1];
            }
        }
        for (; y < image->comps[compno].h; ++y) {
            image_line = image->comps[compno].data + y * image->comps[compno].w;
            for (x = 0; x < image->comps[compno].w; ++x) {
                image_line[x] = image_line[x - (int)image->comps[compno].w];
            }
        }
    }

    return 1;
}

// for XYZ 12 bit
static int libopenjpeg_copy_packed12(AVCodecContext *avctx, const AVFrame *frame, opj_image_t *image)
{
    int compno;
    int x, y;
    int *image_line;
    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_line = image->comps[compno].data + y * image->comps[compno].w;
            frame_index = y * (frame->linesize[0] / 2) + compno;
            for (x = 0; x < avctx->width; ++x) {
                image_line[x] = frame_ptr[frame_index] >> 4;
                frame_index += numcomps;
            }
            for (; x < image->comps[compno].w; ++x) {
                image_line[x] = image_line[x - 1];
            }
        }
        for (; y < image->comps[compno].h; ++y) {
            image_line = image->comps[compno].data + y * image->comps[compno].w;
            for (x = 0; x < image->comps[compno].w; ++x) {
                image_line[x] = image_line[x - (int)image->comps[compno].w];
            }
        }
    }

    return 1;
}

static int libopenjpeg_copy_packed16(AVCodecContext *avctx, const AVFrame *frame, opj_image_t *image)
{
    int compno;
    int x;
    int y;
    int *image_line;
    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_line = image->comps[compno].data + y * image->comps[compno].w;
            frame_index = y * (frame->linesize[0] / 2) + compno;
            for (x = 0; x < avctx->width; ++x) {
                image_line[x] = frame_ptr[frame_index];
                frame_index += numcomps;
            }
            for (; x < image->comps[compno].w; ++x) {
                image_line[x] = image_line[x - 1];
            }
        }
        for (; y < image->comps[compno].h; ++y) {
            image_line = image->comps[compno].data + y * image->comps[compno].w;
            for (x = 0; x < image->comps[compno].w; ++x) {
                image_line[x] = image_line[x - (int)image->comps[compno].w];
            }
        }
    }

    return 1;
}

static int libopenjpeg_copy_unpacked8(AVCodecContext *avctx, const AVFrame *frame, opj_image_t *image)
{
    int compno;
    int x;
    int y;
    int width;
    int height;
    int *image_line;
    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 - 1) / image->comps[compno].dx;
        height = (avctx->height + image->comps[compno].dy - 1) / image->comps[compno].dy;
        for (y = 0; y < height; ++y) {
            image_line = image->comps[compno].data + y * image->comps[compno].w;
            frame_index = y * frame->linesize[compno];
            for (x = 0; x < width; ++x)
                image_line[x] = frame->data[compno][frame_index++];
            for (; x < image->comps[compno].w; ++x) {
                image_line[x] = image_line[x - 1];
            }
        }
        for (; y < image->comps[compno].h; ++y) {
            image_line = image->comps[compno].data + y * image->comps[compno].w;
            for (x = 0; x < image->comps[compno].w; ++x) {
                image_line[x] = image_line[x - (int)image->comps[compno].w];
            }
        }
    }

    return 1;
}

static int libopenjpeg_copy_unpacked16(AVCodecContext *avctx, const AVFrame *frame, opj_image_t *image)
{
    int compno;
    int x;
    int y;
    int width;
    int height;
    int *image_line;
    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 - 1) / image->comps[compno].dx;
        height    = (avctx->height + image->comps[compno].dy - 1) / image->comps[compno].dy;
        frame_ptr = (uint16_t *)frame->data[compno];
        for (y = 0; y < height; ++y) {
            image_line = image->comps[compno].data + y * image->comps[compno].w;
            frame_index = y * (frame->linesize[compno] / 2);
            for (x = 0; x < width; ++x)
                image_line[x] = frame_ptr[frame_index++];
            for (; x < image->comps[compno].w; ++x) {
                image_line[x] = image_line[x - 1];
            }
        }
        for (; y < image->comps[compno].h; ++y) {
            image_line = image->comps[compno].data + y * image->comps[compno].w;
            for (x = 0; x < image->comps[compno].w; ++x) {
                image_line[x] = image_line[x - (int)image->comps[compno].w];
            }
        }
    }

    return 1;
}

static int libopenjpeg_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
                                    const AVFrame *frame, int *got_packet)
{
    LibOpenJPEGContext *ctx = avctx->priv_data;
    int ret;
    AVFrame *gbrframe;
    int cpyresult = 0;
    PacketWriter writer     = { 0 };
    opj_codec_t *compress   = NULL;
    opj_stream_t *stream    = NULL;
    opj_image_t *image      = mj2_create_image(avctx, &ctx->enc_params);
    if (!image) {
        av_log(avctx, AV_LOG_ERROR, "Error creating the mj2 image\n");
        ret = AVERROR(EINVAL);
        goto done;
    }

    switch (avctx->pix_fmt) {
    case AV_PIX_FMT_RGB24:
    case AV_PIX_FMT_RGBA:
    case AV_PIX_FMT_YA8:
        cpyresult = libopenjpeg_copy_packed8(avctx, frame, image);
        break;
    case AV_PIX_FMT_XYZ12:
        cpyresult = libopenjpeg_copy_packed12(avctx, frame, image);
        break;
    case AV_PIX_FMT_RGB48:
    case AV_PIX_FMT_RGBA64:
    case AV_PIX_FMT_YA16:
        cpyresult = libopenjpeg_copy_packed16(avctx, frame, image);
        break;
    case AV_PIX_FMT_GBR24P:
    case AV_PIX_FMT_GBRP9:
    case AV_PIX_FMT_GBRP10:
    case AV_PIX_FMT_GBRP12:
    case AV_PIX_FMT_GBRP14:
    case AV_PIX_FMT_GBRP16:
        gbrframe = av_frame_clone(frame);
        if (!gbrframe) {
            ret = AVERROR(ENOMEM);
            goto done;
        }
        gbrframe->data[0] = frame->data[2]; // swap to be rgb
        gbrframe->data[1] = frame->data[0];
        gbrframe->data[2] = frame->data[1];
        gbrframe->linesize[0] = frame->linesize[2];
        gbrframe->linesize[1] = frame->linesize[0];
        gbrframe->linesize[2] = frame->linesize[1];
        if (avctx->pix_fmt == AV_PIX_FMT_GBR24P) {
            cpyresult = libopenjpeg_copy_unpacked8(avctx, gbrframe, image);
        } else {
            cpyresult = libopenjpeg_copy_unpacked16(avctx, gbrframe, image);
        }
        av_frame_free(&gbrframe);
        break;
    case AV_PIX_FMT_GRAY8:
    case AV_PIX_FMT_YUV410P:
    case AV_PIX_FMT_YUV411P:
    case AV_PIX_FMT_YUV420P:
    case AV_PIX_FMT_YUV422P:
    case AV_PIX_FMT_YUV440P:
    case AV_PIX_FMT_YUV444P:
    case AV_PIX_FMT_YUVA420P:
    case AV_PIX_FMT_YUVA422P:
    case AV_PIX_FMT_YUVA444P:
        cpyresult = libopenjpeg_copy_unpacked8(avctx, frame, image);
        break;
    case AV_PIX_FMT_GRAY10:
    case AV_PIX_FMT_GRAY12:
    case AV_PIX_FMT_GRAY14:
    case AV_PIX_FMT_GRAY16:
    case AV_PIX_FMT_YUV420P9:
    case AV_PIX_FMT_YUV422P9:
    case AV_PIX_FMT_YUV444P9:
    case AV_PIX_FMT_YUVA420P9:
    case AV_PIX_FMT_YUVA422P9:
    case AV_PIX_FMT_YUVA444P9:
    case AV_PIX_FMT_YUV444P10:
    case AV_PIX_FMT_YUV422P10:
    case AV_PIX_FMT_YUV420P10:
    case AV_PIX_FMT_YUVA444P10:
    case AV_PIX_FMT_YUVA422P10:
    case AV_PIX_FMT_YUVA420P10:
    case AV_PIX_FMT_YUV420P12:
    case AV_PIX_FMT_YUV422P12:
    case AV_PIX_FMT_YUV444P12:
    case AV_PIX_FMT_YUV420P14:
    case AV_PIX_FMT_YUV422P14:
    case AV_PIX_FMT_YUV444P14:
    case AV_PIX_FMT_YUV444P16:
    case AV_PIX_FMT_YUV422P16:
    case AV_PIX_FMT_YUV420P16:
    case AV_PIX_FMT_YUVA444P16:
    case AV_PIX_FMT_YUVA422P16:
    case AV_PIX_FMT_YUVA420P16:
        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));
        ret = AVERROR(EINVAL);
        goto done;
        break;
    }

    if (!cpyresult) {
        av_log(avctx, AV_LOG_ERROR,
               "Could not copy the frame data to the internal image buffer\n");
        ret = -1;
        goto done;
    }

    if ((ret = ff_alloc_packet2(avctx, pkt, 1024, 0)) < 0) {
        goto done;
    }

    compress = opj_create_compress(ctx->format);
    if (!compress) {
        av_log(avctx, AV_LOG_ERROR, "Error creating the compressor\n");
        ret = AVERROR(ENOMEM);
        goto done;
    }

    if (!opj_set_error_handler(compress, error_callback, avctx) ||
        !opj_set_warning_handler(compress, warning_callback, avctx) ||
        !opj_set_info_handler(compress, info_callback, avctx)) {
        av_log(avctx, AV_LOG_ERROR, "Error setting the compressor handlers\n");
        ret = AVERROR_EXTERNAL;
        goto done;
    }

    if (!opj_setup_encoder(compress, &ctx->enc_params, image)) {
        av_log(avctx, AV_LOG_ERROR, "Error setting up the compressor\n");
        ret = AVERROR_EXTERNAL;
        goto done;
    }
    stream = opj_stream_default_create(OPJ_STREAM_WRITE);

    if (!stream) {
        av_log(avctx, AV_LOG_ERROR, "Error creating the cio stream\n");
        ret = AVERROR(ENOMEM);
        goto done;
    }

    writer.packet = pkt;
    opj_stream_set_write_function(stream, stream_write);
    opj_stream_set_skip_function(stream, stream_skip);
    opj_stream_set_seek_function(stream, stream_seek);
    opj_stream_set_user_data(stream, &writer, NULL);

    if (!opj_start_compress(compress, image, stream) ||
        !opj_encode(compress, stream) ||
        !opj_end_compress(compress, stream)) {
        av_log(avctx, AV_LOG_ERROR, "Error during the opj encode\n");
        ret = AVERROR_EXTERNAL;
        goto done;
    }

    av_shrink_packet(pkt, writer.pos);

    pkt->flags |= AV_PKT_FLAG_KEY;
    *got_packet = 1;
    ret = 0;

done:
    opj_stream_destroy(stream);
    opj_destroy_codec(compress);
    opj_image_destroy(image);
    return ret;
}

#define OFFSET(x) offsetof(LibOpenJPEGContext, x)
#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
static const AVOption options[] = {
    { "format",        "Codec Format",      OFFSET(format),        AV_OPT_TYPE_INT,   { .i64 = OPJ_CODEC_JP2   }, OPJ_CODEC_J2K, OPJ_CODEC_JP2,   VE, "format"      },
    { "j2k",           NULL,                0,                     AV_OPT_TYPE_CONST, { .i64 = OPJ_CODEC_J2K   }, 0,         0,           VE, "format"      },
    { "jp2",           NULL,                0,                     AV_OPT_TYPE_CONST, { .i64 = OPJ_CODEC_JP2   }, 0,         0,           VE, "format"      },
    { "profile",       NULL,                OFFSET(profile),       AV_OPT_TYPE_INT,   { .i64 = OPJ_STD_RSIZ    }, OPJ_STD_RSIZ,  OPJ_CINEMA4K,    VE, "profile"     },
    { "jpeg2000",      NULL,                0,                     AV_OPT_TYPE_CONST, { .i64 = OPJ_STD_RSIZ    }, 0,         0,           VE, "profile"     },
    { "cinema2k",      NULL,                0,                     AV_OPT_TYPE_CONST, { .i64 = OPJ_CINEMA2K    }, 0,         0,           VE, "profile"     },
    { "cinema4k",      NULL,                0,                     AV_OPT_TYPE_CONST, { .i64 = OPJ_CINEMA4K    }, 0,         0,           VE, "profile"     },
    { "cinema_mode",   "Digital Cinema",    OFFSET(cinema_mode),   AV_OPT_TYPE_INT,   { .i64 = OPJ_OFF         }, OPJ_OFF,       OPJ_CINEMA4K_24, VE, "cinema_mode" },
    { "off",           NULL,                0,                     AV_OPT_TYPE_CONST, { .i64 = OPJ_OFF         }, 0,         0,           VE, "cinema_mode" },
    { "2k_24",         NULL,                0,                     AV_OPT_TYPE_CONST, { .i64 = OPJ_CINEMA2K_24 }, 0,         0,           VE, "cinema_mode" },
    { "2k_48",         NULL,                0,                     AV_OPT_TYPE_CONST, { .i64 = OPJ_CINEMA2K_48 }, 0,         0,           VE, "cinema_mode" },
    { "4k_24",         NULL,                0,                     AV_OPT_TYPE_CONST, { .i64 = OPJ_CINEMA4K_24 }, 0,         0,           VE, "cinema_mode" },
    { "prog_order",    "Progression Order", OFFSET(prog_order),    AV_OPT_TYPE_INT,   { .i64 = OPJ_LRCP    }, OPJ_LRCP,  OPJ_CPRL,    VE, "prog_order"  },
    { "lrcp",          NULL,                0,                     AV_OPT_TYPE_CONST, { .i64 = OPJ_LRCP    }, 0,         0,           VE, "prog_order"  },
    { "rlcp",          NULL,                0,                     AV_OPT_TYPE_CONST, { .i64 = OPJ_RLCP    }, 0,         0,           VE, "prog_order"  },
    { "rpcl",          NULL,                0,                     AV_OPT_TYPE_CONST, { .i64 = OPJ_RPCL    }, 0,         0,           VE, "prog_order"  },
    { "pcrl",          NULL,                0,                     AV_OPT_TYPE_CONST, { .i64 = OPJ_PCRL    }, 0,         0,           VE, "prog_order"  },
    { "cprl",          NULL,                0,                     AV_OPT_TYPE_CONST, { .i64 = OPJ_CPRL    }, 0,         0,           VE, "prog_order"  },
    { "numresolution", NULL,                OFFSET(numresolution), AV_OPT_TYPE_INT,   { .i64 = 6            }, 0,         33,          VE                },
    { "irreversible",  NULL,                OFFSET(irreversible),  AV_OPT_TYPE_INT,   { .i64 = 0            }, 0,         1,           VE                },
    { "disto_alloc",   NULL,                OFFSET(disto_alloc),   AV_OPT_TYPE_INT,   { .i64 = 1            }, 0,         1,           VE                },
    { "fixed_quality", NULL,                OFFSET(fixed_quality), AV_OPT_TYPE_INT,   { .i64 = 0            }, 0,         1,           VE                },
    { NULL },
};

static const AVClass openjpeg_class = {
    .class_name = "libopenjpeg",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
};

AVCodec ff_libopenjpeg_encoder = {
    .name           = "libopenjpeg",
    .long_name      = NULL_IF_CONFIG_SMALL("OpenJPEG JPEG 2000"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_JPEG2000,
    .priv_data_size = sizeof(LibOpenJPEGContext),
    .init           = libopenjpeg_encode_init,
    .encode2        = libopenjpeg_encode_frame,
    .capabilities   = AV_CODEC_CAP_FRAME_THREADS | AV_CODEC_CAP_INTRA_ONLY,
    .pix_fmts       = (const enum AVPixelFormat[]) {
        AV_PIX_FMT_RGB24, AV_PIX_FMT_RGBA, AV_PIX_FMT_RGB48,
        AV_PIX_FMT_RGBA64, AV_PIX_FMT_GBR24P,
        AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
        AV_PIX_FMT_GRAY8, AV_PIX_FMT_YA8, AV_PIX_FMT_GRAY16, AV_PIX_FMT_YA16,
        AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14,
        AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P,
        AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVA422P,
        AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUVA444P,
        AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
        AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
        AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
        AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
        AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12,
        AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
        AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
        AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
        AV_PIX_FMT_XYZ12,
        AV_PIX_FMT_NONE
    },
    .priv_class     = &openjpeg_class,
    .wrapper_name   = "libopenjpeg",
};