diff options
Diffstat (limited to 'src/j2k_transcode.cc')
| -rw-r--r-- | src/j2k_transcode.cc | 156 |
1 files changed, 0 insertions, 156 deletions
diff --git a/src/j2k_transcode.cc b/src/j2k_transcode.cc index 0374d81b..2cc903c7 100644 --- a/src/j2k_transcode.cc +++ b/src/j2k_transcode.cc @@ -70,8 +70,6 @@ dcp::decompress_j2k (shared_ptr<const Data> data, int reduce) } -#ifdef LIBDCP_OPENJPEG2 - class ReadBuffer { public: @@ -186,38 +184,6 @@ dcp::decompress_j2k (uint8_t const * data, int64_t size, int reduce) return std::make_shared<OpenJPEGImage>(image); } -#endif - - -#ifdef LIBDCP_OPENJPEG1 - -shared_ptr<dcp::OpenJPEGImage> -dcp::decompress_j2k (uint8_t* data, int64_t size, int reduce) -{ - auto decoder = opj_create_decompress (CODEC_J2K); - opj_dparameters_t parameters; - opj_set_default_decoder_parameters (¶meters); - parameters.cp_reduce = reduce; - opj_setup_decoder (decoder, ¶meters); - auto cio = opj_cio_open ((opj_common_ptr) decoder, data, size); - auto image = opj_decode (decoder, cio); - if (!image) { - opj_destroy_decompress (decoder); - opj_cio_close (cio); - boost::throw_exception (ReadError (String::compose ("could not decode JPEG2000 codestream of %1 bytes.", size))); - } - - opj_destroy_decompress (decoder); - opj_cio_close (cio); - - image->x1 = rint (float(image->x1) / pow (2, reduce)); - image->y1 = rint (float(image->y1) / pow (2, reduce)); - return std::make_shared<OpenJPEGImage>(image); -} -#endif - - -#ifdef LIBDCP_OPENJPEG2 class WriteBuffer { @@ -367,125 +333,3 @@ dcp::compress_j2k (shared_ptr<const OpenJPEGImage> xyz, int bandwidth, int frame return enc; } -#endif - - -#ifdef LIBDCP_OPENJPEG1 - -ArrayData -dcp::compress_j2k (shared_ptr<const OpenJPEGImage> xyz, int bandwidth, int frames_per_second, bool threed, bool fourk) -{ - /* Set the max image and component sizes based on frame_rate */ - int max_cs_len = ((float) bandwidth) / 8 / frames_per_second; - if (threed) { - /* In 3D we have only half the normal bandwidth per eye */ - max_cs_len /= 2; - } - int const max_comp_size = max_cs_len / 1.25; - - /* get a J2K compressor handle */ - auto cinfo = opj_create_compress (CODEC_J2K); - if (cinfo == nullptr) { - throw MiscError ("could not create JPEG2000 encoder"); - } - - /* Set encoding parameters to default values */ - opj_cparameters_t parameters; - opj_set_default_encoder_parameters (¶meters); - if (fourk) { - parameters.numresolution = 7; - } - - /* Set default cinema parameters */ - parameters.tile_size_on = false; - parameters.cp_tdx = 1; - parameters.cp_tdy = 1; - - /* Tile part */ - parameters.tp_flag = 'C'; - parameters.tp_on = 1; - - /* Tile and Image shall be at (0,0) */ - parameters.cp_tx0 = 0; - parameters.cp_ty0 = 0; - parameters.image_offset_x0 = 0; - parameters.image_offset_y0 = 0; - - /* Codeblock size = 32x32 */ - parameters.cblockw_init = 32; - parameters.cblockh_init = 32; - parameters.csty |= 0x01; - - /* The progression order shall be CPRL */ - parameters.prog_order = CPRL; - - /* No ROI */ - parameters.roi_compno = -1; - - parameters.subsampling_dx = 1; - parameters.subsampling_dy = 1; - - /* 9-7 transform */ - parameters.irreversible = 1; - - parameters.tcp_rates[0] = 0; - parameters.tcp_numlayers++; - parameters.cp_disto_alloc = 1; - parameters.cp_rsiz = fourk ? CINEMA4K : CINEMA2K; - if (fourk) { - parameters.numpocs = 2; - parameters.POC[0].tile = 1; - parameters.POC[0].resno0 = 0; - parameters.POC[0].compno0 = 0; - parameters.POC[0].layno1 = 1; - parameters.POC[0].resno1 = parameters.numresolution - 1; - parameters.POC[0].compno1 = 3; - parameters.POC[0].prg1 = CPRL; - parameters.POC[1].tile = 1; - parameters.POC[1].resno0 = parameters.numresolution - 1; - parameters.POC[1].compno0 = 0; - parameters.POC[1].layno1 = 1; - parameters.POC[1].resno1 = parameters.numresolution; - parameters.POC[1].compno1 = 3; - parameters.POC[1].prg1 = CPRL; - } - - parameters.cp_comment = strdup ("libdcp"); - parameters.cp_cinema = fourk ? CINEMA4K_24 : CINEMA2K_24; - - /* 3 components, so use MCT */ - parameters.tcp_mct = 1; - - /* set max image */ - parameters.max_comp_size = max_comp_size; - parameters.tcp_rates[0] = ((float) (3 * xyz->size().width * xyz->size().height * 12)) / (max_cs_len * 8); - - /* Set event manager to null (openjpeg 1.3 bug) */ - cinfo->event_mgr = 0; - - /* Setup the encoder parameters using the current image and user parameters */ - opj_setup_encoder (cinfo, ¶meters, xyz->opj_image()); - - auto cio = opj_cio_open ((opj_common_ptr) cinfo, 0, 0); - if (cio == nullptr) { - opj_destroy_compress (cinfo); - throw MiscError ("could not open JPEG2000 stream"); - } - - int const r = opj_encode (cinfo, cio, xyz->opj_image(), 0); - if (r == 0) { - opj_cio_close (cio); - opj_destroy_compress (cinfo); - throw MiscError ("JPEG2000 encoding failed"); - } - - ArrayData enc (cio->buffer, cio_tell (cio)); - - opj_cio_close (cio); - free (parameters.cp_comment); - opj_destroy_compress (cinfo); - - return enc; -} - -#endif |
