/* * JPEG 2000 decoding support via OpenJPEG * Copyright (c) 2009 Jaikrishnan Menon * * 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 decoder using libopenjpeg */ #define OPJ_STATIC #include #include "libavutil/common.h" #include "libavutil/intreadwrite.h" #include "libavutil/imgutils.h" #include "libavutil/pixfmt.h" #include "libavutil/opt.h" #include "avcodec.h" #include "thread.h" #define JP2_SIG_TYPE 0x6A502020 #define JP2_SIG_VALUE 0x0D0A870A // pix_fmts with lower bpp have to be listed before // similar pix_fmts with higher bpp. #define RGB_PIXEL_FORMATS AV_PIX_FMT_RGB24,AV_PIX_FMT_RGBA,AV_PIX_FMT_RGB48,AV_PIX_FMT_RGBA64 #define GRAY_PIXEL_FORMATS AV_PIX_FMT_GRAY8,AV_PIX_FMT_GRAY8A,AV_PIX_FMT_GRAY16 #define YUV_PIXEL_FORMATS AV_PIX_FMT_YUV410P,AV_PIX_FMT_YUV411P,AV_PIX_FMT_YUVA420P, \ AV_PIX_FMT_YUV420P,AV_PIX_FMT_YUV422P,AV_PIX_FMT_YUVA422P, \ AV_PIX_FMT_YUV440P,AV_PIX_FMT_YUV444P,AV_PIX_FMT_YUVA444P, \ AV_PIX_FMT_YUV420P9,AV_PIX_FMT_YUV422P9,AV_PIX_FMT_YUV444P9, \ AV_PIX_FMT_YUV420P10,AV_PIX_FMT_YUV422P10,AV_PIX_FMT_YUV444P10, \ 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 static const enum AVPixelFormat libopenjpeg_rgb_pix_fmts[] = {RGB_PIXEL_FORMATS}; static const enum AVPixelFormat libopenjpeg_gray_pix_fmts[] = {GRAY_PIXEL_FORMATS}; static const enum AVPixelFormat libopenjpeg_yuv_pix_fmts[] = {YUV_PIXEL_FORMATS}; static const enum AVPixelFormat libopenjpeg_all_pix_fmts[] = {RGB_PIXEL_FORMATS,GRAY_PIXEL_FORMATS,YUV_PIXEL_FORMATS}; typedef struct { AVClass *class; opj_dparameters_t dec_params; AVFrame image; int lowqual; } LibOpenJPEGContext; static inline int libopenjpeg_matches_pix_fmt(const opj_image_t *image, enum AVPixelFormat pix_fmt) { const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt); int match = 1; if (desc->nb_components != image->numcomps) { return 0; } switch (desc->nb_components) { case 4: match = match && desc->comp[3].depth_minus1 + 1 >= image->comps[3].prec && 1 == image->comps[3].dx && 1 == image->comps[3].dy; case 3: match = match && desc->comp[2].depth_minus1 + 1 >= image->comps[2].prec && 1 << desc->log2_chroma_w == image->comps[2].dx && 1 << desc->log2_chroma_h == image->comps[2].dy; case 2: match = match && desc->comp[1].depth_minus1 + 1 >= image->comps[1].prec && 1 << desc->log2_chroma_w == image->comps[1].dx && 1 << desc->log2_chroma_h == image->comps[1].dy; case 1: match = match && desc->comp[0].depth_minus1 + 1 >= image->comps[0].prec && 1 == image->comps[0].dx && 1 == image->comps[0].dy; default: break; } return match; } static inline enum AVPixelFormat libopenjpeg_guess_pix_fmt(const opj_image_t *image) { int index; const enum AVPixelFormat *possible_fmts = NULL; int possible_fmts_nb = 0; switch (image->color_space) { case CLRSPC_SRGB: possible_fmts = libopenjpeg_rgb_pix_fmts; possible_fmts_nb = FF_ARRAY_ELEMS(libopenjpeg_rgb_pix_fmts); break; case CLRSPC_GRAY: possible_fmts = libopenjpeg_gray_pix_fmts; possible_fmts_nb = FF_ARRAY_ELEMS(libopenjpeg_gray_pix_fmts); break; case CLRSPC_SYCC: possible_fmts = libopenjpeg_yuv_pix_fmts; possible_fmts_nb = FF_ARRAY_ELEMS(libopenjpeg_yuv_pix_fmts); break; default: possible_fmts = libopenjpeg_all_pix_fmts; possible_fmts_nb = FF_ARRAY_ELEMS(libopenjpeg_all_pix_fmts); break; } for (index = 0; index < possible_fmts_nb; ++index) { if (libopenjpeg_matches_pix_fmt(image, possible_fmts[index])) { return possible_fmts[index]; } } return AV_PIX_FMT_NONE; } static inline int libopenjpeg_ispacked(enum AVPixelFormat pix_fmt) { const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt); int i, component_plane; if (pix_fmt == AV_PIX_FMT_GRAY16) return 0; component_plane = desc->comp[0].plane; for (i = 1; i < desc->nb_components; i++) { if (component_plane != desc->comp[i].plane) return 0; } return 1; } static inline void libopenjpeg_copy_to_packed8(AVFrame *picture, opj_image_t *image) { uint8_t *img_ptr; int index, x, y, c; for (y = 0; y < picture->height; y++) { index = y*picture->width; img_ptr = picture->data[0] + y*picture->linesize[0]; for (x = 0; x < picture->width; x++, index++) { for (c = 0; c < image->numcomps; c++) { *img_ptr++ = image->comps[c].data[index]; } } } } static inline void libopenjpeg_copy_to_packed16(AVFrame *picture, opj_image_t *image) { uint16_t *img_ptr; int index, x, y, c; int adjust[4]; for (x = 0; x < image->numcomps; x++) adjust[x] = FFMAX(FFMIN(16 - image->comps[x].prec, 8), 0); for (y = 0; y < picture->height; y++) { index = y*picture->width; img_ptr = (uint16_t*) (picture->data[0] + y*picture->linesize[0]); for (x = 0; x < picture->width; x++, index++) { for (c = 0; c < image->numcomps; c++) { *img_ptr++ = image->comps[c].data[index] << adjust[c]; } } } } static inline void libopenjpeg_copyto8(AVFrame *picture, opj_image_t *image) { int *comp_data; uint8_t *img_ptr; int index, x, y; for (index = 0; index < image->numcomps; index++) { comp_data = image->comps[index].data; for (y = 0; y < image->comps[index].h; y++) { img_ptr = picture->data[index] + y * picture->linesize[index]; for (x = 0; x < image->comps[index].w; x++) { *img_ptr = (uint8_t) *comp_data; img_ptr++; comp_data++; } } } } static inline void libopenjpeg_copyto16(AVFrame *picture, opj_image_t *image) { int *comp_data; uint16_t *img_ptr; int index, x, y; for (index = 0; index < image->numcomps; index++) { comp_data = image->comps[index].data; for (y = 0; y < image->comps[index].h; y++) { img_ptr = (uint16_t*) (picture->data[index] + y * picture->linesize[index]); for (x = 0; x < image->comps[index].w; x++) { *img_ptr = *comp_data; img_ptr++; comp_data++; } } } } static av_cold int libopenjpeg_decode_init(AVCodecContext *avctx) { LibOpenJPEGContext *ctx = avctx->priv_data; opj_set_default_decoder_parameters(&ctx->dec_params); avcodec_get_frame_defaults(&ctx->image); avctx->coded_frame = &ctx->image; return 0; } static av_cold int libopenjpeg_decode_init_thread_copy(AVCodecContext *avctx) { LibOpenJPEGContext *ctx = avctx->priv_data; avctx->coded_frame = &ctx->image; return 0; } static int libopenjpeg_decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt) { uint8_t *buf = avpkt->data; int buf_size = avpkt->size; LibOpenJPEGContext *ctx = avctx->priv_data; AVFrame *picture = &ctx->image, *output = data; const AVPixFmtDescriptor *desc; opj_dinfo_t *dec; opj_cio_t *stream; opj_image_t *image; int width, height, ret = -1; int pixel_size = 0; int ispacked = 0; int i; *data_size = 0; // Check if input is a raw jpeg2k codestream or in jp2 wrapping if ((AV_RB32(buf) == 12) && (AV_RB32(buf + 4) == JP2_SIG_TYPE) && (AV_RB32(buf + 8) == JP2_SIG_VALUE)) { dec = opj_create_decompress(CODEC_JP2); } else { /* If the AVPacket contains a jp2c box, then skip to * the starting byte of the codestream. */ if (AV_RB32(buf + 4) == AV_RB32("jp2c")) buf += 8; dec = opj_create_decompress(CODEC_J2K); } if (!dec) { av_log(avctx, AV_LOG_ERROR, "Error initializing decoder.\n"); return -1; } opj_set_event_mgr((opj_common_ptr)dec, NULL, NULL); ctx->dec_params.cp_limit_decoding = LIMIT_TO_MAIN_HEADER; ctx->dec_params.cp_layer = ctx->lowqual; // Tie decoder with decoding parameters opj_setup_decoder(dec, &ctx->dec_params); stream = opj_cio_open((opj_common_ptr)dec, buf, buf_size); if (!stream) { av_log(avctx, AV_LOG_ERROR, "Codestream could not be opened for reading.\n"); opj_destroy_decompress(dec); return -1; } // Decode the header only. image = opj_decode_with_info(dec, stream, NULL); opj_cio_close(stream); if (!image) { av_log(avctx, AV_LOG_ERROR, "Error decoding codestream.\n"); opj_destroy_decompress(dec); return -1; } width = image->x1 - image->x0; height = image->y1 - image->y0; if (av_image_check_size(width, height, 0, avctx) < 0) { av_log(avctx, AV_LOG_ERROR, "%dx%d dimension invalid.\n", width, height); goto done; } avcodec_set_dimensions(avctx, width, height); if (avctx->pix_fmt != AV_PIX_FMT_NONE) if (!libopenjpeg_matches_pix_fmt(image, avctx->pix_fmt)) avctx->pix_fmt = AV_PIX_FMT_NONE; if (avctx->pix_fmt == AV_PIX_FMT_NONE) avctx->pix_fmt = libopenjpeg_guess_pix_fmt(image); if (avctx->pix_fmt == AV_PIX_FMT_NONE) { av_log(avctx, AV_LOG_ERROR, "Unable to determine pixel format\n"); goto done; } for (i = 0; i < image->numcomps; i++) if (image->comps[i].prec > avctx->bits_per_raw_sample) avctx->bits_per_raw_sample = image->comps[i].prec; if (picture->data[0]) ff_thread_release_buffer(avctx, picture); if (ff_thread_get_buffer(avctx, picture) < 0) { av_log(avctx, AV_LOG_ERROR, "ff_thread_get_buffer() failed\n"); goto done; } ctx->dec_params.cp_limit_decoding = NO_LIMITATION; ctx->dec_params.cp_reduce = avctx->lowres; // Tie decoder with decoding parameters. opj_setup_decoder(dec, &ctx->dec_params); stream = opj_cio_open((opj_common_ptr)dec, buf, buf_size); if (!stream) { av_log(avctx, AV_LOG_ERROR, "Codestream could not be opened for reading.\n"); goto done; } opj_image_destroy(image); // Decode the codestream image = opj_decode_with_info(dec, stream, NULL); opj_cio_close(stream); if (!image) { av_log(avctx, AV_LOG_ERROR, "Error decoding codestream.\n"); goto done; } desc = av_pix_fmt_desc_get(avctx->pix_fmt); pixel_size = desc->comp[0].step_minus1 + 1; ispacked = libopenjpeg_ispacked(avctx->pix_fmt); switch (pixel_size) { case 1: if (ispacked) { libopenjpeg_copy_to_packed8(picture, image); } else { libopenjpeg_copyto8(picture, image); } break; case 2: if (ispacked) { libopenjpeg_copy_to_packed8(picture, image); } else { libopenjpeg_copyto16(picture, image); } break; case 3: case 4: if (ispacked) { libopenjpeg_copy_to_packed8(picture, image); } break; case 6: case 8: if (ispacked) { libopenjpeg_copy_to_packed16(picture, image); } break; default: av_log(avctx, AV_LOG_ERROR, "unsupported pixel size %d\n", pixel_size); goto done; } *output = ctx->image; *data_size = sizeof(AVPicture); ret = buf_size; done: opj_image_destroy(image); opj_destroy_decompress(dec); return ret; } static av_cold int libopenjpeg_decode_close(AVCodecContext *avctx) { LibOpenJPEGContext *ctx = avctx->priv_data; if (ctx->image.data[0]) ff_thread_release_buffer(avctx, &ctx->image); return 0; } #define OFFSET(x) offsetof(LibOpenJPEGContext, x) #define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM static const AVOption options[] = { { "lowqual", "Limit the number of layers used for decoding", OFFSET(lowqual), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VD }, { NULL }, }; static const AVClass class = { .class_name = "libopenjpeg", .item_name = av_default_item_name, .option = options, .version = LIBAVUTIL_VERSION_INT, }; AVCodec ff_libopenjpeg_decoder = { .name = "libopenjpeg", .type = AVMEDIA_TYPE_VIDEO, .id = AV_CODEC_ID_JPEG2000, .priv_data_size = sizeof(LibOpenJPEGContext), .init = libopenjpeg_decode_init, .close = libopenjpeg_decode_close, .decode = libopenjpeg_decode_frame, .capabilities = CODEC_CAP_DR1 | CODEC_CAP_FRAME_THREADS, .max_lowres = 31, .long_name = NULL_IF_CONFIG_SMALL("OpenJPEG JPEG 2000"), .priv_class = &class, .init_thread_copy = ONLY_IF_THREADS_ENABLED(libopenjpeg_decode_init_thread_copy), };