Stowage/ffmpeg
2
0
Fork 0
mirror of https://git.ffmpeg.org/ffmpeg.git synced 2025-12-08 06:09:50 +00:00
Code Issues Projects Releases Packages Wiki Activity

avcodec/jpegtables: remove duplicate luma and chroma quantization tables

Browse source 
Duplicates of the standard JPEG quantization tables were found in the
AGM, MSS34(dsp), NUV and VP31 codecs. This patch elimates those duplicates,
placing a single copy in jpegquanttables.c.
This commit is contained in:
Peter Ross 2022-10-26 20:11:21 +11:00
parent 9bed814e1d
commit 58bd7d97a4
9 changed files with 102 additions and 114 deletions
Download patch file Download diff file Expand all files Collapse all files

25
libavcodec/mss34dsp.c
View file

@ -22,33 +22,12 @@
#include <stdint.h>
#include "libavutil/common.h"
#include "mss34dsp.h"
static const uint8_t luma_quant[64] = {
16, 11, 10, 16, 24, 40, 51, 61,
12, 12, 14, 19, 26, 58, 60, 55,
14, 13, 16, 24, 40, 57, 69, 56,
14, 17, 22, 29, 51, 87, 80, 62,
18, 22, 37, 56, 68, 109, 103, 77,
24, 35, 55, 64, 81, 104, 113, 92,
49, 64, 78, 87, 103, 121, 120, 101,
72, 92, 95, 98, 112, 100, 103, 99
};
static const uint8_t chroma_quant[64] = {
17, 18, 24, 47, 99, 99, 99, 99,
18, 21, 26, 66, 99, 99, 99, 99,
24, 26, 56, 99, 99, 99, 99, 99,
47, 66, 99, 99, 99, 99, 99, 99,
99, 99, 99, 99, 99, 99, 99, 99,
99, 99, 99, 99, 99, 99, 99, 99,
99, 99, 99, 99, 99, 99, 99, 99,
99, 99, 99, 99, 99, 99, 99, 99
};
#include "jpegquanttables.h"
void ff_mss34_gen_quant_mat(uint16_t *qmat, int quality, int luma)
{
int i;
const uint8_t *qsrc = luma ? luma_quant : chroma_quant;
const uint8_t *qsrc = luma ? ff_mjpeg_std_luminance_quant_tbl : ff_mjpeg_std_chrominance_quant_tbl;
if (quality >= 50) {
int scale = 200 - 2 * quality;