diff options
Diffstat (limited to 'ffmpeg/libavcodec/libopenjpegdec.c')
| -rw-r--r-- | ffmpeg/libavcodec/libopenjpegdec.c | 408 |
1 files changed, 408 insertions, 0 deletions
diff --git a/ffmpeg/libavcodec/libopenjpegdec.c b/ffmpeg/libavcodec/libopenjpegdec.c new file mode 100644 index 0000000..f8b6165 --- /dev/null +++ b/ffmpeg/libavcodec/libopenjpegdec.c @@ -0,0 +1,408 @@ +/* + * 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 "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" + +#if HAVE_OPENJPEG_1_5_OPENJPEG_H +# include <openjpeg-1.5/openjpeg.h> +#else +# include <openjpeg.h> +#endif + +#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_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 + +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; + 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); + 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; + 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; + + *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(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 (ff_thread_get_buffer(avctx, &frame, 0) < 0) + 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; + } + + *got_frame = 1; + ret = buf_size; + +done: + opj_image_destroy(image); + opj_destroy_decompress(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 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, + .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, +}; 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