diff options
| author | dcommander <dcommander@632fc199-4ca6-4c93-a231-07263d6284db> | 2012-01-27 09:52:20 +0000 |
|---|---|---|
| committer | dcommander <dcommander@632fc199-4ca6-4c93-a231-07263d6284db> | 2012-01-27 09:52:20 +0000 |
| commit | 4de54dcd8c85eca21ac4850dd776dbb98db63353 (patch) | |
| tree | 8158cc63c1bbfa33967944353344b3a7717a673c /libjpeg.txt | |
| parent | 288c46c5cf085ed986b6d0f5f7516bdcb456ed52 (diff) | |
Be clear that we are only emulating the libjpeg v7/v8 API/ABI, not the library itself.
git-svn-id: svn://svn.code.sf.net/p/libjpeg-turbo/code/trunk@748 632fc199-4ca6-4c93-a231-07263d6284db
Diffstat (limited to 'libjpeg.txt')
| -rw-r--r-- | libjpeg.txt | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/libjpeg.txt b/libjpeg.txt index 191b35e..c781757 100644 --- a/libjpeg.txt +++ b/libjpeg.txt @@ -850,8 +850,9 @@ int jpeg_quality_scaling (int quality) premise of this routine collapses. Caveat user. jpeg_default_qtables (j_compress_ptr cinfo, boolean force_baseline) - [libjpeg v7/v8 only] Set default quantization tables with linear - q_scale_factor[] values (see below). + [libjpeg v7+ API/ABI emulation only] + Set default quantization tables with linear q_scale_factor[] values + (see below). jpeg_add_quant_table (j_compress_ptr cinfo, int which_tbl, const unsigned int *basic_table, @@ -976,8 +977,9 @@ JQUANT_TBL * quant_tbl_ptrs[NUM_QUANT_TBLS] slot 1 for chrominance. int q_scale_factor[NUM_QUANT_TBLS] - [libjpeg v7+ only] Linear quantization scaling factors (0-100, default - 100) for use with jpeg_default_qtables(). + [libjpeg v7+ API/ABI emulation only] + Linear quantization scaling factors (0-100, default 100) + for use with jpeg_default_qtables(). See rdswitch.c and cjpeg.c for an example of usage. Note that the q_scale_factor[] values use "linear" scales, so JPEG quality levels chosen by the user must be converted to these scales @@ -1012,11 +1014,12 @@ JHUFF_TBL * ac_huff_tbl_ptrs[NUM_HUFF_TBLS] any need to mess with providing your own Huffman tables. -[libjpeg v7+ only] The actual dimensions of the JPEG image that will be written -to the file are given by the following fields. These are computed from the -input image dimensions and the compression parameters by jpeg_start_compress(). -You can also call jpeg_calc_jpeg_dimensions() to obtain the values that will -result from the current parameter settings. +[libjpeg v7+ API/ABI emulation only] +The actual dimensions of the JPEG image that will be written to the file are +given by the following fields. These are computed from the input image +dimensions and the compression parameters by jpeg_start_compress(). You can +also call jpeg_calc_jpeg_dimensions() to obtain the values that will result +from the current parameter settings. JDIMENSION jpeg_width Actual dimensions of output image. JDIMENSION jpeg_height |