| /* |
| * JPEG 2000 decoding support via OpenJPEG |
| * Copyright (c) 2009 Jaikrishnan Menon <realityman@gmx.net> |
| * |
| * 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 <openjpeg.h> |
| |
| #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 PIX_FMT_RGB24,PIX_FMT_RGBA,PIX_FMT_RGB48,PIX_FMT_RGBA64 |
| #define GRAY_PIXEL_FORMATS PIX_FMT_GRAY8,PIX_FMT_GRAY8A,PIX_FMT_GRAY16 |
| #define YUV_PIXEL_FORMATS PIX_FMT_YUV410P,PIX_FMT_YUV411P,PIX_FMT_YUVA420P, \ |
| PIX_FMT_YUV420P,PIX_FMT_YUV422P,PIX_FMT_YUVA422P, \ |
| PIX_FMT_YUV440P,PIX_FMT_YUV444P,PIX_FMT_YUVA444P, \ |
| PIX_FMT_YUV420P9,PIX_FMT_YUV422P9,PIX_FMT_YUV444P9, \ |
| PIX_FMT_YUV420P10,PIX_FMT_YUV422P10,PIX_FMT_YUV444P10, \ |
| PIX_FMT_YUV420P12,PIX_FMT_YUV422P12,PIX_FMT_YUV444P12, \ |
| PIX_FMT_YUV420P14,PIX_FMT_YUV422P14,PIX_FMT_YUV444P14, \ |
| PIX_FMT_YUV420P16,PIX_FMT_YUV422P16,PIX_FMT_YUV444P16 |
| |
| static const enum PixelFormat libopenjpeg_rgb_pix_fmts[] = {RGB_PIXEL_FORMATS}; |
| static const enum PixelFormat libopenjpeg_gray_pix_fmts[] = {GRAY_PIXEL_FORMATS}; |
| static const enum PixelFormat libopenjpeg_yuv_pix_fmts[] = {YUV_PIXEL_FORMATS}; |
| static const enum PixelFormat 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 PixelFormat pix_fmt) |
| { |
| AVPixFmtDescriptor descriptor = av_pix_fmt_descriptors[pix_fmt]; |
| int match = 1; |
| |
| if (descriptor.nb_components != image->numcomps) { |
| return 0; |
| } |
| |
| switch (descriptor.nb_components) { |
| case 4: match = match && descriptor.comp[3].depth_minus1 + 1 >= image->comps[3].prec && |
| 1 == image->comps[3].dx && |
| 1 == image->comps[3].dy; |
| case 3: match = match && descriptor.comp[2].depth_minus1 + 1 >= image->comps[2].prec && |
| 1 << descriptor.log2_chroma_w == image->comps[2].dx && |
| 1 << descriptor.log2_chroma_h == image->comps[2].dy; |
| case 2: match = match && descriptor.comp[1].depth_minus1 + 1 >= image->comps[1].prec && |
| 1 << descriptor.log2_chroma_w == image->comps[1].dx && |
| 1 << descriptor.log2_chroma_h == image->comps[1].dy; |
| case 1: match = match && descriptor.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 PixelFormat libopenjpeg_guess_pix_fmt(const opj_image_t *image) { |
| int index; |
| const enum PixelFormat *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 PIX_FMT_NONE; |
| } |
| |
| static inline int libopenjpeg_ispacked(enum PixelFormat pix_fmt) { |
| int i, component_plane; |
| |
| if (pix_fmt == PIX_FMT_GRAY16) |
| return 0; |
| |
| component_plane = av_pix_fmt_descriptors[pix_fmt].comp[0].plane; |
| for (i = 1; i < av_pix_fmt_descriptors[pix_fmt].nb_components; i++) { |
| if (component_plane != av_pix_fmt_descriptors[pix_fmt].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; |
| 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 != PIX_FMT_NONE) |
| if (!libopenjpeg_matches_pix_fmt(image, avctx->pix_fmt)) |
| avctx->pix_fmt = PIX_FMT_NONE; |
| |
| if (avctx->pix_fmt == PIX_FMT_NONE) |
| avctx->pix_fmt = libopenjpeg_guess_pix_fmt(image); |
| |
| if (avctx->pix_fmt == 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; |
| } |
| |
| pixel_size = av_pix_fmt_descriptors[avctx->pix_fmt].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), |
| }; |