diff options
author | 2017-01-25 17:49:53 +0100 | |
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committer | 2017-01-25 17:49:53 +0100 | |
commit | 78a7342750182687a08060c5e060cb897800e9f6 (patch) | |
tree | 73ab5b3a3b09c56a73a74950a71701adf7a22cc7 /3rdparty/libjpeg/jcmarker.c | |
parent | 93c92be81517a982ef9b47eed610a3e42ed244bc (diff) |
updated libjpeg to 9c (nw)
Diffstat (limited to '3rdparty/libjpeg/jcmarker.c')
-rw-r--r-- | 3rdparty/libjpeg/jcmarker.c | 69 |
1 files changed, 53 insertions, 16 deletions
diff --git a/3rdparty/libjpeg/jcmarker.c b/3rdparty/libjpeg/jcmarker.c index 606c19af397..ca2bb39922f 100644 --- a/3rdparty/libjpeg/jcmarker.c +++ b/3rdparty/libjpeg/jcmarker.c @@ -2,7 +2,7 @@ * jcmarker.c * * Copyright (C) 1991-1998, Thomas G. Lane. - * Modified 2003-2010 by Guido Vollbeding. + * Modified 2003-2013 by Guido Vollbeding. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * @@ -19,24 +19,24 @@ typedef enum { /* JPEG marker codes */ M_SOF1 = 0xc1, M_SOF2 = 0xc2, M_SOF3 = 0xc3, - + M_SOF5 = 0xc5, M_SOF6 = 0xc6, M_SOF7 = 0xc7, - + M_JPG = 0xc8, M_SOF9 = 0xc9, M_SOF10 = 0xca, M_SOF11 = 0xcb, - + M_SOF13 = 0xcd, M_SOF14 = 0xce, M_SOF15 = 0xcf, - + M_DHT = 0xc4, - + M_DAC = 0xcc, - + M_RST0 = 0xd0, M_RST1 = 0xd1, M_RST2 = 0xd2, @@ -45,7 +45,7 @@ typedef enum { /* JPEG marker codes */ M_RST5 = 0xd5, M_RST6 = 0xd6, M_RST7 = 0xd7, - + M_SOI = 0xd8, M_EOI = 0xd9, M_SOS = 0xda, @@ -54,7 +54,7 @@ typedef enum { /* JPEG marker codes */ M_DRI = 0xdd, M_DHP = 0xde, M_EXP = 0xdf, - + M_APP0 = 0xe0, M_APP1 = 0xe1, M_APP2 = 0xe2, @@ -71,13 +71,14 @@ typedef enum { /* JPEG marker codes */ M_APP13 = 0xed, M_APP14 = 0xee, M_APP15 = 0xef, - + M_JPG0 = 0xf0, + M_JPG8 = 0xf8, M_JPG13 = 0xfd, M_COM = 0xfe, - + M_TEM = 0x01, - + M_ERROR = 0x100 } JPEG_MARKER; @@ -282,6 +283,37 @@ emit_dri (j_compress_ptr cinfo) LOCAL(void) +emit_lse_ict (j_compress_ptr cinfo) +/* Emit an LSE inverse color transform specification marker */ +{ + /* Support only 1 transform */ + if (cinfo->color_transform != JCT_SUBTRACT_GREEN || + cinfo->num_components < 3) + ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); + + emit_marker(cinfo, M_JPG8); + + emit_2bytes(cinfo, 24); /* fixed length */ + + emit_byte(cinfo, 0x0D); /* ID inverse transform specification */ + emit_2bytes(cinfo, MAXJSAMPLE); /* MAXTRANS */ + emit_byte(cinfo, 3); /* Nt=3 */ + emit_byte(cinfo, cinfo->comp_info[1].component_id); + emit_byte(cinfo, cinfo->comp_info[0].component_id); + emit_byte(cinfo, cinfo->comp_info[2].component_id); + emit_byte(cinfo, 0x80); /* F1: CENTER1=1, NORM1=0 */ + emit_2bytes(cinfo, 0); /* A(1,1)=0 */ + emit_2bytes(cinfo, 0); /* A(1,2)=0 */ + emit_byte(cinfo, 0); /* F2: CENTER2=0, NORM2=0 */ + emit_2bytes(cinfo, 1); /* A(2,1)=1 */ + emit_2bytes(cinfo, 0); /* A(2,2)=0 */ + emit_byte(cinfo, 0); /* F3: CENTER3=0, NORM3=0 */ + emit_2bytes(cinfo, 1); /* A(3,1)=1 */ + emit_2bytes(cinfo, 0); /* A(3,2)=0 */ +} + + +LOCAL(void) emit_sof (j_compress_ptr cinfo, JPEG_MARKER code) /* Emit a SOF marker */ { @@ -476,8 +508,8 @@ write_marker_byte (j_compress_ptr cinfo, int val) * Write datastream header. * This consists of an SOI and optional APPn markers. * We recommend use of the JFIF marker, but not the Adobe marker, - * when using YCbCr or grayscale data. The JFIF marker should NOT - * be used for any other JPEG colorspace. The Adobe marker is helpful + * when using YCbCr or grayscale data. The JFIF marker is also used + * for other standard JPEG colorspaces. The Adobe marker is helpful * to distinguish RGB, CMYK, and YCCK colorspaces. * Note that an application can write additional header markers after * jpeg_start_compress returns. @@ -502,7 +534,8 @@ write_file_header (j_compress_ptr cinfo) /* * Write frame header. - * This consists of DQT and SOFn markers, and a conditional pseudo SOS marker. + * This consists of DQT and SOFn markers, + * a conditional LSE marker and a conditional pseudo SOS marker. * Note that we do not emit the SOF until we have emitted the DQT(s). * This avoids compatibility problems with incorrect implementations that * try to error-check the quant table numbers as soon as they see the SOF. @@ -560,6 +593,10 @@ write_frame_header (j_compress_ptr cinfo) emit_sof(cinfo, M_SOF1); /* SOF code for non-baseline Huffman file */ } + /* Check to emit LSE inverse color transform specification marker */ + if (cinfo->color_transform) + emit_lse_ict(cinfo); + /* Check to emit pseudo SOS marker */ if (cinfo->progressive_mode && cinfo->block_size != DCTSIZE) emit_pseudo_sos(cinfo); @@ -668,7 +705,7 @@ jinit_marker_writer (j_compress_ptr cinfo) marker = (my_marker_ptr) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, SIZEOF(my_marker_writer)); - cinfo->marker = (struct jpeg_marker_writer *) marker; + cinfo->marker = &marker->pub; /* Initialize method pointers */ marker->pub.write_file_header = write_file_header; marker->pub.write_frame_header = write_frame_header; |