yading@10: /*
yading@10:  * JPEG 2000 decoding support via OpenJPEG
yading@10:  * Copyright (c) 2009 Jaikrishnan Menon <realityman@gmx.net>
yading@10:  *
yading@10:  * This file is part of FFmpeg.
yading@10:  *
yading@10:  * FFmpeg is free software; you can redistribute it and/or
yading@10:  * modify it under the terms of the GNU Lesser General Public
yading@10:  * License as published by the Free Software Foundation; either
yading@10:  * version 2.1 of the License, or (at your option) any later version.
yading@10:  *
yading@10:  * FFmpeg is distributed in the hope that it will be useful,
yading@10:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@10:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@10:  * Lesser General Public License for more details.
yading@10:  *
yading@10:  * You should have received a copy of the GNU Lesser General Public
yading@10:  * License along with FFmpeg; if not, write to the Free Software
yading@10:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@10:  */
yading@10: 
yading@10: /**
yading@10:  * @file
yading@10:  * JPEG 2000 decoder using libopenjpeg
yading@10:  */
yading@10: 
yading@10: #define  OPJ_STATIC
yading@10: 
yading@10: #include "libavutil/common.h"
yading@10: #include "libavutil/intreadwrite.h"
yading@10: #include "libavutil/imgutils.h"
yading@10: #include "libavutil/pixfmt.h"
yading@10: #include "libavutil/opt.h"
yading@10: #include "avcodec.h"
yading@10: #include "thread.h"
yading@10: 
yading@10: #if HAVE_OPENJPEG_1_5_OPENJPEG_H
yading@10: # include <openjpeg-1.5/openjpeg.h>
yading@10: #else
yading@10: # include <openjpeg.h>
yading@10: #endif
yading@10: 
yading@10: #define JP2_SIG_TYPE    0x6A502020
yading@10: #define JP2_SIG_VALUE   0x0D0A870A
yading@10: 
yading@10: // pix_fmts with lower bpp have to be listed before
yading@10: // similar pix_fmts with higher bpp.
yading@10: #define RGB_PIXEL_FORMATS   AV_PIX_FMT_RGB24,AV_PIX_FMT_RGBA,AV_PIX_FMT_RGB48,AV_PIX_FMT_RGBA64
yading@10: #define GRAY_PIXEL_FORMATS  AV_PIX_FMT_GRAY8,AV_PIX_FMT_GRAY8A,AV_PIX_FMT_GRAY16
yading@10: #define YUV_PIXEL_FORMATS   AV_PIX_FMT_YUV410P,AV_PIX_FMT_YUV411P,AV_PIX_FMT_YUVA420P, \
yading@10:                             AV_PIX_FMT_YUV420P,AV_PIX_FMT_YUV422P,AV_PIX_FMT_YUVA422P, \
yading@10:                             AV_PIX_FMT_YUV440P,AV_PIX_FMT_YUV444P,AV_PIX_FMT_YUVA444P, \
yading@10:                             AV_PIX_FMT_YUV420P9,AV_PIX_FMT_YUV422P9,AV_PIX_FMT_YUV444P9, \
yading@10:                             AV_PIX_FMT_YUVA420P9,AV_PIX_FMT_YUVA422P9,AV_PIX_FMT_YUVA444P9, \
yading@10:                             AV_PIX_FMT_YUV420P10,AV_PIX_FMT_YUV422P10,AV_PIX_FMT_YUV444P10, \
yading@10:                             AV_PIX_FMT_YUVA420P10,AV_PIX_FMT_YUVA422P10,AV_PIX_FMT_YUVA444P10, \
yading@10:                             AV_PIX_FMT_YUV420P12,AV_PIX_FMT_YUV422P12,AV_PIX_FMT_YUV444P12, \
yading@10:                             AV_PIX_FMT_YUV420P14,AV_PIX_FMT_YUV422P14,AV_PIX_FMT_YUV444P14, \
yading@10:                             AV_PIX_FMT_YUV420P16,AV_PIX_FMT_YUV422P16,AV_PIX_FMT_YUV444P16, \
yading@10:                             AV_PIX_FMT_YUVA420P16,AV_PIX_FMT_YUVA422P16,AV_PIX_FMT_YUVA444P16
yading@10: 
yading@10: #define XYZ_PIXEL_FORMATS  AV_PIX_FMT_XYZ12
yading@10: 
yading@10: static const enum AVPixelFormat libopenjpeg_rgb_pix_fmts[]  = {RGB_PIXEL_FORMATS};
yading@10: static const enum AVPixelFormat libopenjpeg_gray_pix_fmts[] = {GRAY_PIXEL_FORMATS};
yading@10: static const enum AVPixelFormat libopenjpeg_yuv_pix_fmts[]  = {YUV_PIXEL_FORMATS};
yading@10: static const enum AVPixelFormat libopenjpeg_all_pix_fmts[]  = {RGB_PIXEL_FORMATS,
yading@10:                                                                GRAY_PIXEL_FORMATS,
yading@10:                                                                YUV_PIXEL_FORMATS,
yading@10:                                                                XYZ_PIXEL_FORMATS};
yading@10: 
yading@10: typedef struct {
yading@10:     AVClass *class;
yading@10:     opj_dparameters_t dec_params;
yading@10:     int lowqual;
yading@10: } LibOpenJPEGContext;
yading@10: 
yading@10: static inline int libopenjpeg_matches_pix_fmt(const opj_image_t *image, enum AVPixelFormat pix_fmt)
yading@10: {
yading@10:     const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
yading@10:     int match = 1;
yading@10: 
yading@10:     if (desc->nb_components != image->numcomps) {
yading@10:         return 0;
yading@10:     }
yading@10: 
yading@10:     switch (desc->nb_components) {
yading@10:     case 4: match = match && desc->comp[3].depth_minus1 + 1 >= image->comps[3].prec &&
yading@10:                              1 == image->comps[3].dx &&
yading@10:                              1 == image->comps[3].dy;
yading@10:     case 3: match = match && desc->comp[2].depth_minus1 + 1 >= image->comps[2].prec &&
yading@10:                              1 << desc->log2_chroma_w == image->comps[2].dx &&
yading@10:                              1 << desc->log2_chroma_h == image->comps[2].dy;
yading@10:     case 2: match = match && desc->comp[1].depth_minus1 + 1 >= image->comps[1].prec &&
yading@10:                              1 << desc->log2_chroma_w == image->comps[1].dx &&
yading@10:                              1 << desc->log2_chroma_h == image->comps[1].dy;
yading@10:     case 1: match = match && desc->comp[0].depth_minus1 + 1 >= image->comps[0].prec &&
yading@10:                              1 == image->comps[0].dx &&
yading@10:                              1 == image->comps[0].dy;
yading@10:     default:
yading@10:         break;
yading@10:     }
yading@10: 
yading@10:     return match;
yading@10: }
yading@10: 
yading@10: static inline enum AVPixelFormat libopenjpeg_guess_pix_fmt(const opj_image_t *image) {
yading@10:     int index;
yading@10:     const enum AVPixelFormat *possible_fmts = NULL;
yading@10:     int possible_fmts_nb = 0;
yading@10: 
yading@10:     switch (image->color_space) {
yading@10:     case CLRSPC_SRGB:
yading@10:         possible_fmts = libopenjpeg_rgb_pix_fmts;
yading@10:         possible_fmts_nb = FF_ARRAY_ELEMS(libopenjpeg_rgb_pix_fmts);
yading@10:         break;
yading@10:     case CLRSPC_GRAY:
yading@10:         possible_fmts = libopenjpeg_gray_pix_fmts;
yading@10:         possible_fmts_nb = FF_ARRAY_ELEMS(libopenjpeg_gray_pix_fmts);
yading@10:         break;
yading@10:     case CLRSPC_SYCC:
yading@10:         possible_fmts = libopenjpeg_yuv_pix_fmts;
yading@10:         possible_fmts_nb = FF_ARRAY_ELEMS(libopenjpeg_yuv_pix_fmts);
yading@10:         break;
yading@10:     default:
yading@10:         possible_fmts = libopenjpeg_all_pix_fmts;
yading@10:         possible_fmts_nb = FF_ARRAY_ELEMS(libopenjpeg_all_pix_fmts);
yading@10:         break;
yading@10:     }
yading@10: 
yading@10:     for (index = 0; index < possible_fmts_nb; ++index) {
yading@10:         if (libopenjpeg_matches_pix_fmt(image, possible_fmts[index])) {
yading@10:             return possible_fmts[index];
yading@10:         }
yading@10:     }
yading@10: 
yading@10:     return AV_PIX_FMT_NONE;
yading@10: }
yading@10: 
yading@10: static inline int libopenjpeg_ispacked(enum AVPixelFormat pix_fmt)
yading@10: {
yading@10:     const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
yading@10:     int i, component_plane;
yading@10: 
yading@10:     if (pix_fmt == AV_PIX_FMT_GRAY16)
yading@10:         return 0;
yading@10: 
yading@10:     component_plane = desc->comp[0].plane;
yading@10:     for (i = 1; i < desc->nb_components; i++) {
yading@10:         if (component_plane != desc->comp[i].plane)
yading@10:             return 0;
yading@10:     }
yading@10:     return 1;
yading@10: }
yading@10: 
yading@10: static inline void libopenjpeg_copy_to_packed8(AVFrame *picture, opj_image_t *image) {
yading@10:     uint8_t *img_ptr;
yading@10:     int index, x, y, c;
yading@10:     for (y = 0; y < picture->height; y++) {
yading@10:         index = y*picture->width;
yading@10:         img_ptr = picture->data[0] + y*picture->linesize[0];
yading@10:         for (x = 0; x < picture->width; x++, index++) {
yading@10:             for (c = 0; c < image->numcomps; c++) {
yading@10:                 *img_ptr++ = image->comps[c].data[index];
yading@10:             }
yading@10:         }
yading@10:     }
yading@10: }
yading@10: 
yading@10: static inline void libopenjpeg_copy_to_packed16(AVFrame *picture, opj_image_t *image) {
yading@10:     uint16_t *img_ptr;
yading@10:     int index, x, y, c;
yading@10:     int adjust[4];
yading@10:     for (x = 0; x < image->numcomps; x++)
yading@10:         adjust[x] = FFMAX(FFMIN(16 - image->comps[x].prec, 8), 0);
yading@10: 
yading@10:     for (y = 0; y < picture->height; y++) {
yading@10:         index = y*picture->width;
yading@10:         img_ptr = (uint16_t*) (picture->data[0] + y*picture->linesize[0]);
yading@10:         for (x = 0; x < picture->width; x++, index++) {
yading@10:             for (c = 0; c < image->numcomps; c++) {
yading@10:                 *img_ptr++ = image->comps[c].data[index] << adjust[c];
yading@10:             }
yading@10:         }
yading@10:     }
yading@10: }
yading@10: 
yading@10: static inline void libopenjpeg_copyto8(AVFrame *picture, opj_image_t *image) {
yading@10:     int *comp_data;
yading@10:     uint8_t *img_ptr;
yading@10:     int index, x, y;
yading@10: 
yading@10:     for (index = 0; index < image->numcomps; index++) {
yading@10:         comp_data = image->comps[index].data;
yading@10:         for (y = 0; y < image->comps[index].h; y++) {
yading@10:             img_ptr = picture->data[index] + y * picture->linesize[index];
yading@10:             for (x = 0; x < image->comps[index].w; x++) {
yading@10:                 *img_ptr = (uint8_t) *comp_data;
yading@10:                 img_ptr++;
yading@10:                 comp_data++;
yading@10:             }
yading@10:         }
yading@10:     }
yading@10: }
yading@10: 
yading@10: static inline void libopenjpeg_copyto16(AVFrame *picture, opj_image_t *image) {
yading@10:     int *comp_data;
yading@10:     uint16_t *img_ptr;
yading@10:     int index, x, y;
yading@10:     for (index = 0; index < image->numcomps; index++) {
yading@10:         comp_data = image->comps[index].data;
yading@10:         for (y = 0; y < image->comps[index].h; y++) {
yading@10:             img_ptr = (uint16_t*) (picture->data[index] + y * picture->linesize[index]);
yading@10:             for (x = 0; x < image->comps[index].w; x++) {
yading@10:                 *img_ptr = *comp_data;
yading@10:                 img_ptr++;
yading@10:                 comp_data++;
yading@10:             }
yading@10:         }
yading@10:     }
yading@10: }
yading@10: 
yading@10: static av_cold int libopenjpeg_decode_init(AVCodecContext *avctx)
yading@10: {
yading@10:     LibOpenJPEGContext *ctx = avctx->priv_data;
yading@10: 
yading@10:     opj_set_default_decoder_parameters(&ctx->dec_params);
yading@10:     return 0;
yading@10: }
yading@10: 
yading@10: static int libopenjpeg_decode_frame(AVCodecContext *avctx,
yading@10:                                     void *data, int *got_frame,
yading@10:                                     AVPacket *avpkt)
yading@10: {
yading@10:     uint8_t *buf = avpkt->data;
yading@10:     int buf_size = avpkt->size;
yading@10:     LibOpenJPEGContext *ctx = avctx->priv_data;
yading@10:     ThreadFrame frame = { .f = data };
yading@10:     AVFrame *picture  = data;
yading@10:     const AVPixFmtDescriptor *desc;
yading@10:     opj_dinfo_t *dec;
yading@10:     opj_cio_t *stream;
yading@10:     opj_image_t *image;
yading@10:     int width, height, ret = -1;
yading@10:     int pixel_size = 0;
yading@10:     int ispacked = 0;
yading@10:     int i;
yading@10: 
yading@10:     *got_frame = 0;
yading@10: 
yading@10:     // Check if input is a raw jpeg2k codestream or in jp2 wrapping
yading@10:     if ((AV_RB32(buf)     == 12)           &&
yading@10:         (AV_RB32(buf + 4) == JP2_SIG_TYPE) &&
yading@10:         (AV_RB32(buf + 8) == JP2_SIG_VALUE)) {
yading@10:         dec = opj_create_decompress(CODEC_JP2);
yading@10:     } else {
yading@10:         /* If the AVPacket contains a jp2c box, then skip to
yading@10:          * the starting byte of the codestream. */
yading@10:         if (AV_RB32(buf + 4) == AV_RB32("jp2c"))
yading@10:             buf += 8;
yading@10:         dec = opj_create_decompress(CODEC_J2K);
yading@10:     }
yading@10: 
yading@10:     if (!dec) {
yading@10:         av_log(avctx, AV_LOG_ERROR, "Error initializing decoder.\n");
yading@10:         return -1;
yading@10:     }
yading@10:     opj_set_event_mgr((opj_common_ptr)dec, NULL, NULL);
yading@10:     ctx->dec_params.cp_limit_decoding = LIMIT_TO_MAIN_HEADER;
yading@10:     ctx->dec_params.cp_layer          = ctx->lowqual;
yading@10:     // Tie decoder with decoding parameters
yading@10:     opj_setup_decoder(dec, &ctx->dec_params);
yading@10:     stream = opj_cio_open((opj_common_ptr)dec, buf, buf_size);
yading@10: 
yading@10:     if (!stream) {
yading@10:         av_log(avctx, AV_LOG_ERROR,
yading@10:                "Codestream could not be opened for reading.\n");
yading@10:         opj_destroy_decompress(dec);
yading@10:         return -1;
yading@10:     }
yading@10: 
yading@10:     // Decode the header only.
yading@10:     image = opj_decode_with_info(dec, stream, NULL);
yading@10:     opj_cio_close(stream);
yading@10: 
yading@10:     if (!image) {
yading@10:         av_log(avctx, AV_LOG_ERROR, "Error decoding codestream.\n");
yading@10:         opj_destroy_decompress(dec);
yading@10:         return -1;
yading@10:     }
yading@10: 
yading@10:     width  = image->x1 - image->x0;
yading@10:     height = image->y1 - image->y0;
yading@10: 
yading@10:     if (av_image_check_size(width, height, 0, avctx) < 0) {
yading@10:         av_log(avctx, AV_LOG_ERROR,
yading@10:                "%dx%d dimension invalid.\n", width, height);
yading@10:         goto done;
yading@10:     }
yading@10: 
yading@10:     avcodec_set_dimensions(avctx, width, height);
yading@10: 
yading@10:     if (avctx->pix_fmt != AV_PIX_FMT_NONE)
yading@10:         if (!libopenjpeg_matches_pix_fmt(image, avctx->pix_fmt))
yading@10:             avctx->pix_fmt = AV_PIX_FMT_NONE;
yading@10: 
yading@10:     if (avctx->pix_fmt == AV_PIX_FMT_NONE)
yading@10:         avctx->pix_fmt = libopenjpeg_guess_pix_fmt(image);
yading@10: 
yading@10:     if (avctx->pix_fmt == AV_PIX_FMT_NONE) {
yading@10:         av_log(avctx, AV_LOG_ERROR, "Unable to determine pixel format\n");
yading@10:         goto done;
yading@10:     }
yading@10:     for (i = 0; i < image->numcomps; i++)
yading@10:         if (image->comps[i].prec > avctx->bits_per_raw_sample)
yading@10:             avctx->bits_per_raw_sample = image->comps[i].prec;
yading@10: 
yading@10:     if (ff_thread_get_buffer(avctx, &frame, 0) < 0)
yading@10:         goto done;
yading@10: 
yading@10:     ctx->dec_params.cp_limit_decoding = NO_LIMITATION;
yading@10:     ctx->dec_params.cp_reduce = avctx->lowres;
yading@10:     // Tie decoder with decoding parameters.
yading@10:     opj_setup_decoder(dec, &ctx->dec_params);
yading@10:     stream = opj_cio_open((opj_common_ptr)dec, buf, buf_size);
yading@10:     if (!stream) {
yading@10:         av_log(avctx, AV_LOG_ERROR,
yading@10:                "Codestream could not be opened for reading.\n");
yading@10:         goto done;
yading@10:     }
yading@10: 
yading@10:     opj_image_destroy(image);
yading@10:     // Decode the codestream
yading@10:     image = opj_decode_with_info(dec, stream, NULL);
yading@10:     opj_cio_close(stream);
yading@10: 
yading@10:     if (!image) {
yading@10:         av_log(avctx, AV_LOG_ERROR, "Error decoding codestream.\n");
yading@10:         goto done;
yading@10:     }
yading@10: 
yading@10:     desc = av_pix_fmt_desc_get(avctx->pix_fmt);
yading@10:     pixel_size = desc->comp[0].step_minus1 + 1;
yading@10:     ispacked = libopenjpeg_ispacked(avctx->pix_fmt);
yading@10: 
yading@10:     switch (pixel_size) {
yading@10:     case 1:
yading@10:         if (ispacked) {
yading@10:             libopenjpeg_copy_to_packed8(picture, image);
yading@10:         } else {
yading@10:             libopenjpeg_copyto8(picture, image);
yading@10:         }
yading@10:         break;
yading@10:     case 2:
yading@10:         if (ispacked) {
yading@10:             libopenjpeg_copy_to_packed8(picture, image);
yading@10:         } else {
yading@10:             libopenjpeg_copyto16(picture, image);
yading@10:         }
yading@10:         break;
yading@10:     case 3:
yading@10:     case 4:
yading@10:         if (ispacked) {
yading@10:             libopenjpeg_copy_to_packed8(picture, image);
yading@10:         }
yading@10:         break;
yading@10:     case 6:
yading@10:     case 8:
yading@10:         if (ispacked) {
yading@10:             libopenjpeg_copy_to_packed16(picture, image);
yading@10:         }
yading@10:         break;
yading@10:     default:
yading@10:         av_log(avctx, AV_LOG_ERROR, "unsupported pixel size %d\n", pixel_size);
yading@10:         goto done;
yading@10:     }
yading@10: 
yading@10:     *got_frame = 1;
yading@10:     ret        = buf_size;
yading@10: 
yading@10: done:
yading@10:     opj_image_destroy(image);
yading@10:     opj_destroy_decompress(dec);
yading@10:     return ret;
yading@10: }
yading@10: 
yading@10: #define OFFSET(x) offsetof(LibOpenJPEGContext, x)
yading@10: #define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
yading@10: 
yading@10: static const AVOption options[] = {
yading@10:     { "lowqual", "Limit the number of layers used for decoding",    OFFSET(lowqual), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VD },
yading@10:     { NULL },
yading@10: };
yading@10: 
yading@10: static const AVClass class = {
yading@10:     .class_name = "libopenjpeg",
yading@10:     .item_name  = av_default_item_name,
yading@10:     .option     = options,
yading@10:     .version    = LIBAVUTIL_VERSION_INT,
yading@10: };
yading@10: 
yading@10: AVCodec ff_libopenjpeg_decoder = {
yading@10:     .name             = "libopenjpeg",
yading@10:     .type             = AVMEDIA_TYPE_VIDEO,
yading@10:     .id               = AV_CODEC_ID_JPEG2000,
yading@10:     .priv_data_size   = sizeof(LibOpenJPEGContext),
yading@10:     .init             = libopenjpeg_decode_init,
yading@10:     .decode           = libopenjpeg_decode_frame,
yading@10:     .capabilities     = CODEC_CAP_DR1 | CODEC_CAP_FRAME_THREADS,
yading@10:     .max_lowres       = 31,
yading@10:     .long_name        = NULL_IF_CONFIG_SMALL("OpenJPEG JPEG 2000"),
yading@10:     .priv_class       = &class,
yading@10: };