/* * 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 */ #include "libavutil/common.h" #include "libavutil/imgutils.h" #include "libavutil/intreadwrite.h" #include "libavutil/opt.h" #include "libavutil/pixfmt.h" #include "avcodec.h" #include "internal.h" #include "thread.h" #include <openjpeg.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_YA8, \ AV_PIX_FMT_GRAY16, AV_PIX_FMT_YA16 #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_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 #define XYZ_PIXEL_FORMATS AV_PIX_FMT_XYZ12 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, XYZ_PIXEL_FORMATS }; typedef struct LibOpenJPEGContext { AVClass *class; opj_dparameters_t dec_params; int lowqual; } LibOpenJPEGContext; static void error_callback(const char *msg, void *data) { av_log(data, AV_LOG_ERROR, "%s", msg); } static void warning_callback(const char *msg, void *data) { av_log(data, AV_LOG_WARNING, "%s", msg); } static void info_callback(const char *msg, void *data) { av_log(data, AV_LOG_DEBUG, "%s", msg); } typedef struct BufferReader { int pos; int size; const uint8_t *buffer; } BufferReader; static OPJ_SIZE_T stream_read(void *out_buffer, OPJ_SIZE_T nb_bytes, void *user_data) { BufferReader *reader = user_data; int remaining; if (reader->pos == reader->size) { return (OPJ_SIZE_T)-1; } remaining = reader->size - reader->pos; if (nb_bytes > remaining) { nb_bytes = remaining; } memcpy(out_buffer, reader->buffer + reader->pos, nb_bytes); reader->pos += (int)nb_bytes; return nb_bytes; } static OPJ_OFF_T stream_skip(OPJ_OFF_T nb_bytes, void *user_data) { BufferReader *reader = user_data; if (nb_bytes < 0) { if (reader->pos == 0) { return (OPJ_SIZE_T)-1; } if (nb_bytes + reader->pos < 0) { nb_bytes = -reader->pos; } } else { int remaining; if (reader->pos == reader->size) { return (OPJ_SIZE_T)-1; } remaining = reader->size - reader->pos; if (nb_bytes > remaining) { nb_bytes = remaining; } } reader->pos += (int)nb_bytes; return nb_bytes; } static OPJ_BOOL stream_seek(OPJ_OFF_T nb_bytes, void *user_data) { BufferReader *reader = user_data; if (nb_bytes < 0 || nb_bytes > reader->size) { return OPJ_FALSE; } reader->pos = (int)nb_bytes; return OPJ_TRUE; } 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 >= image->comps[3].prec && 1 == image->comps[3].dx && 1 == image->comps[3].dy; case 3: match = match && desc->comp[2].depth >= 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 >= 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 >= 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 OPJ_CLRSPC_SRGB: possible_fmts = libopenjpeg_rgb_pix_fmts; possible_fmts_nb = FF_ARRAY_ELEMS(libopenjpeg_rgb_pix_fmts); break; case OPJ_CLRSPC_GRAY: possible_fmts = libopenjpeg_gray_pix_fmts; possible_fmts_nb = FF_ARRAY_ELEMS(libopenjpeg_gray_pix_fmts); break; case OPJ_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++ = 0x80 * image->comps[c].sgnd + image->comps[c].data[index]; } } static inline void libopenjpeg_copy_to_packed16(AVFrame *picture, opj_image_t *image) { uint16_t *img_ptr; const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(picture->format); int index, x, y, c; int adjust[4]; for (x = 0; x < image->numcomps; x++) adjust[x] = FFMAX(FFMIN(desc->comp[x].depth - image->comps[x].prec, 8), 0) + desc->comp[x].shift; 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++ = (1 << image->comps[c].prec - 1) * image->comps[c].sgnd + (unsigned)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 = 0x80 * image->comps[index].sgnd + *comp_data; img_ptr++; comp_data++; } } } } static inline void libopenjpeg_copyto16(AVFrame *picture, opj_image_t *image) { int *comp_data; uint16_t *img_ptr; const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(picture->format); int index, x, y; int adjust[4]; for (x = 0; x < image->numcomps; x++) adjust[x] = FFMAX(FFMIN(desc->comp[x].depth - image->comps[x].prec, 8), 0) + desc->comp[x].shift; 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 = (1 << image->comps[index].prec - 1) * image->comps[index].sgnd + (unsigned)*comp_data << adjust[index]; 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); return 0; } static int libopenjpeg_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt) { uint8_t *buf = avpkt->data; int buf_size = avpkt->size; LibOpenJPEGContext *ctx = avctx->priv_data; ThreadFrame frame = { .f = data }; AVFrame *picture = data; const AVPixFmtDescriptor *desc; int width, height, ret; int pixel_size = 0; int ispacked = 0; int i; opj_image_t *image = NULL; BufferReader reader = {0, avpkt->size, avpkt->data}; opj_codec_t *dec = NULL; opj_stream_t *stream = NULL; *got_frame = 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(OPJ_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(OPJ_CODEC_J2K); } if (!dec) { av_log(avctx, AV_LOG_ERROR, "Error initializing decoder.\n"); ret = AVERROR_EXTERNAL; goto done; } if (!opj_set_error_handler(dec, error_callback, avctx) || !opj_set_warning_handler(dec, warning_callback, avctx) || !opj_set_info_handler(dec, info_callback, avctx)) { av_log(avctx, AV_LOG_ERROR, "Error setting decoder handlers.\n"); ret = AVERROR_EXTERNAL; goto done; } ctx->dec_params.cp_layer = ctx->lowqual; ctx->dec_params.cp_reduce = avctx->lowres; // Tie decoder with decoding parameters opj_setup_decoder(dec, &ctx->dec_params); stream = opj_stream_default_create(OPJ_STREAM_READ); if (!stream) { av_log(avctx, AV_LOG_ERROR, "Codestream could not be opened for reading.\n"); ret = AVERROR_EXTERNAL; goto done; } opj_stream_set_read_function(stream, stream_read); opj_stream_set_skip_function(stream, stream_skip); opj_stream_set_seek_function(stream, stream_seek); opj_stream_set_user_data(stream, &reader, NULL); opj_stream_set_user_data_length(stream, avpkt->size); // Decode the header only. ret = !opj_read_header(stream, dec, &image); if (ret) { av_log(avctx, AV_LOG_ERROR, "Error decoding codestream header.\n"); ret = AVERROR_EXTERNAL; goto done; } width = image->x1 - image->x0; height = image->y1 - image->y0; ret = ff_set_dimensions(avctx, width, height); if (ret < 0) goto done; 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"); ret = AVERROR_UNKNOWN; 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 ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0) goto done; ret = !opj_decode(dec, stream, image); if (ret) { av_log(avctx, AV_LOG_ERROR, "Error decoding codestream.\n"); ret = AVERROR_EXTERNAL; goto done; } for (i = 0; i < image->numcomps; i++) { if (!image->comps[i].data) { av_log(avctx, AV_LOG_ERROR, "Image component %d contains no data.\n", i); ret = AVERROR_INVALIDDATA; goto done; } } desc = av_pix_fmt_desc_get(avctx->pix_fmt); pixel_size = desc->comp[0].step; 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: avpriv_report_missing_feature(avctx, "Pixel size %d", pixel_size); ret = AVERROR_PATCHWELCOME; goto done; } *got_frame = 1; picture->pict_type = AV_PICTURE_TYPE_I; picture->key_frame = 1; ret = buf_size; done: opj_image_destroy(image); opj_stream_destroy(stream); opj_destroy_codec(dec); return ret; } #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 openjpeg_class = { .class_name = "libopenjpeg", .item_name = av_default_item_name, .option = options, .version = LIBAVUTIL_VERSION_INT, }; AVCodec ff_libopenjpeg_decoder = { .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_decode_init, .decode = libopenjpeg_decode_frame, .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS, .max_lowres = 31, .priv_class = &openjpeg_class, .wrapper_name = "libopenjpeg", };