| /* |
| * 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/imgutils.h" |
| #include "libavutil/intreadwrite.h" |
| #include "libavutil/opt.h" |
| #include "libavutil/pixfmt.h" |
| |
| #include "avcodec.h" |
| #include "internal.h" |
| #include "thread.h" |
| |
| #if HAVE_OPENJPEG_2_1_OPENJPEG_H |
| # include <openjpeg-2.1/openjpeg.h> |
| #elif HAVE_OPENJPEG_2_0_OPENJPEG_H |
| # include <openjpeg-2.0/openjpeg.h> |
| #elif HAVE_OPENJPEG_1_5_OPENJPEG_H |
| # include <openjpeg-1.5/openjpeg.h> |
| #else |
| # include <openjpeg.h> |
| #endif |
| |
| #if HAVE_OPENJPEG_2_1_OPENJPEG_H || HAVE_OPENJPEG_2_0_OPENJPEG_H |
| # define OPENJPEG_MAJOR_VERSION 2 |
| # define OPJ(x) OPJ_##x |
| #else |
| # define OPENJPEG_MAJOR_VERSION 1 |
| # define OPJ(x) x |
| #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_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; |
| #if OPENJPEG_MAJOR_VERSION == 1 |
| opj_event_mgr_t event_mgr; |
| #endif // OPENJPEG_MAJOR_VERSION == 1 |
| 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); |
| } |
| |
| #if OPENJPEG_MAJOR_VERSION == 2 |
| 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; |
| if (reader->pos == reader->size) { |
| return (OPJ_SIZE_T)-1; |
| } |
| int 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 { |
| if (reader->pos == reader->size) { |
| return (OPJ_SIZE_T)-1; |
| } |
| int 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; |
| } |
| #endif // OPENJPEG_MAJOR_VERSION == 2 |
| |
| 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; |
| #if OPENJPEG_MAJOR_VERSION == 1 |
| opj_dinfo_t *dec = NULL; |
| opj_cio_t *stream = NULL; |
| #else // OPENJPEG_MAJOR_VERSION == 2 |
| BufferReader reader = {0, avpkt->size, avpkt->data}; |
| opj_codec_t *dec = NULL; |
| opj_stream_t *stream = NULL; |
| #endif // OPENJPEG_MAJOR_VERSION == 1 |
| |
| *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 OPENJPEG_MAJOR_VERSION == 1 |
| memset(&ctx->event_mgr, 0, sizeof(ctx->event_mgr)); |
| ctx->event_mgr.info_handler = info_callback; |
| ctx->event_mgr.error_handler = error_callback; |
| ctx->event_mgr.warning_handler = warning_callback; |
| opj_set_event_mgr((opj_common_ptr) dec, &ctx->event_mgr, avctx); |
| ctx->dec_params.cp_limit_decoding = LIMIT_TO_MAIN_HEADER; |
| ctx->dec_params.cp_layer = ctx->lowqual; |
| #else // OPENJPEG_MAJOR_VERSION == 2 |
| 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; |
| #endif // OPENJPEG_MAJOR_VERSION == 1 |
| |
| // Tie decoder with decoding parameters |
| opj_setup_decoder(dec, &ctx->dec_params); |
| |
| #if OPENJPEG_MAJOR_VERSION == 1 |
| stream = opj_cio_open((opj_common_ptr) dec, buf, buf_size); |
| #else // OPENJPEG_MAJOR_VERSION == 2 |
| stream = opj_stream_default_create(OPJ_STREAM_READ); |
| #endif // OPENJPEG_MAJOR_VERSION == 1 |
| |
| if (!stream) { |
| av_log(avctx, AV_LOG_ERROR, |
| "Codestream could not be opened for reading.\n"); |
| ret = AVERROR_EXTERNAL; |
| goto done; |
| } |
| |
| #if OPENJPEG_MAJOR_VERSION == 1 |
| // Decode the header only. |
| image = opj_decode_with_info(dec, stream, NULL); |
| opj_cio_close(stream); |
| stream = NULL; |
| ret = !image; |
| #else // OPENJPEG_MAJOR_VERSION == 2 |
| opj_stream_set_read_function(stream, stream_read); |
| opj_stream_set_skip_function(stream, stream_skip); |
| opj_stream_set_seek_function(stream, stream_seek); |
| #if HAVE_OPENJPEG_2_1_OPENJPEG_H |
| opj_stream_set_user_data(stream, &reader, NULL); |
| #elif HAVE_OPENJPEG_2_0_OPENJPEG_H |
| opj_stream_set_user_data(stream, &reader); |
| #else |
| #error Missing call to opj_stream_set_user_data |
| #endif |
| opj_stream_set_user_data_length(stream, avpkt->size); |
| // Decode the header only. |
| ret = !opj_read_header(stream, dec, &image); |
| #endif // OPENJPEG_MAJOR_VERSION == 1 |
| |
| 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; |
| |
| #if OPENJPEG_MAJOR_VERSION == 1 |
| 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"); |
| ret = AVERROR_EXTERNAL; |
| goto done; |
| } |
| opj_image_destroy(image); |
| // Decode the codestream |
| image = opj_decode_with_info(dec, stream, NULL); |
| ret = !image; |
| #else // OPENJPEG_MAJOR_VERSION == 2 |
| ret = !opj_decode(dec, stream, image); |
| #endif // OPENJPEG_MAJOR_VERSION == 1 |
| |
| 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: |
| av_log(avctx, AV_LOG_ERROR, "unsupported pixel size %d\n", pixel_size); |
| ret = AVERROR_PATCHWELCOME; |
| goto done; |
| } |
| |
| *got_frame = 1; |
| ret = buf_size; |
| |
| done: |
| opj_image_destroy(image); |
| #if OPENJPEG_MAJOR_VERSION == 2 |
| opj_stream_destroy(stream); |
| opj_destroy_codec(dec); |
| #else |
| opj_cio_close(stream); |
| opj_destroy_decompress(dec); |
| #endif |
| return ret; |
| } |
| |
| static av_cold void libopenjpeg_static_init(AVCodec *codec) |
| { |
| const char *version = opj_version(); |
| int major, minor; |
| |
| if (sscanf(version, "%d.%d", &major, &minor) == 2 && 1000*major + minor <= 1003) |
| codec->capabilities |= AV_CODEC_CAP_EXPERIMENTAL; |
| } |
| |
| #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, |
| .init_static_data = libopenjpeg_static_init, |
| }; |
