[FFmpeg-devel] [PATCH v2 077/162] avcodec/mss4: Don't duplicate standard JPEG tables

[Andreas Rheinhardt]

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at gmail.com>
---
 configure         |  2 +-
 libavcodec/mss4.c | 58 +++++------------------------------------------
 2 files changed, 7 insertions(+), 53 deletions(-)

diff --git a/configure b/configure
index 51e43fbf66..10cf61007b 100755
--- a/configure
+++ b/configure
@@ -2801,7 +2801,7 @@ msmpeg4v2_encoder_select="h263_encoder"
 msmpeg4v3_decoder_select="h263_decoder"
 msmpeg4v3_encoder_select="h263_encoder"
 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
-mts2_decoder_select="mss34dsp"
+mts2_decoder_select="jpegtables mss34dsp"
 mv30_decoder_select="aandcttables blockdsp"
 mvha_decoder_deps="zlib"
 mvha_decoder_select="llviddsp"
diff --git a/libavcodec/mss4.c b/libavcodec/mss4.c
index baf3c14d02..74132fd7c1 100644
--- a/libavcodec/mss4.c
+++ b/libavcodec/mss4.c
@@ -29,6 +29,7 @@
 #include "bytestream.h"
 #include "get_bits.h"
 #include "internal.h"
+#include "jpegtables.h"
 #include "mss34dsp.h"
 #include "unary.h"
 
@@ -57,56 +58,6 @@ static const uint8_t mss4_dc_vlc_lens[2][16] = {
     { 0, 3, 1, 1, 1, 1, 1, 1, 1, 2, 0, 0, 0, 0, 0, 0 }
 };
 
-static const uint8_t mss4_ac_vlc_lens[2][16] = {
-    { 0, 2, 1, 3, 3, 2, 4, 3, 5, 5, 4, 4, 0, 0, 1, 125 },
-    { 0, 2, 1, 2, 4, 4, 3, 4, 7, 5, 4, 4, 0, 1, 2, 119 }
-};
-
-static const uint8_t mss4_ac_vlc_syms[2][162] = {
-  { 0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12,
-    0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07,
-    0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xA1, 0x08,
-    0x23, 0x42, 0xB1, 0xC1, 0x15, 0x52, 0xD1, 0xF0,
-    0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0A, 0x16,
-    0x17, 0x18, 0x19, 0x1A, 0x25, 0x26, 0x27, 0x28,
-    0x29, 0x2A, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39,
-    0x3A, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49,
-    0x4A, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59,
-    0x5A, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69,
-    0x6A, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79,
-    0x7A, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89,
-    0x8A, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98,
-    0x99, 0x9A, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7,
-    0xA8, 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6,
-    0xB7, 0xB8, 0xB9, 0xBA, 0xC2, 0xC3, 0xC4, 0xC5,
-    0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xD2, 0xD3, 0xD4,
-    0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xE1, 0xE2,
-    0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xEA,
-    0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8,
-    0xF9, 0xFA  },
-  { 0x00, 0x01, 0x02, 0x03, 0x11, 0x04, 0x05, 0x21,
-    0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71,
-    0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91,
-    0xA1, 0xB1, 0xC1, 0x09, 0x23, 0x33, 0x52, 0xF0,
-    0x15, 0x62, 0x72, 0xD1, 0x0A, 0x16, 0x24, 0x34,
-    0xE1, 0x25, 0xF1, 0x17, 0x18, 0x19, 0x1A, 0x26,
-    0x27, 0x28, 0x29, 0x2A, 0x35, 0x36, 0x37, 0x38,
-    0x39, 0x3A, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48,
-    0x49, 0x4A, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,
-    0x59, 0x5A, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68,
-    0x69, 0x6A, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78,
-    0x79, 0x7A, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
-    0x88, 0x89, 0x8A, 0x92, 0x93, 0x94, 0x95, 0x96,
-    0x97, 0x98, 0x99, 0x9A, 0xA2, 0xA3, 0xA4, 0xA5,
-    0xA6, 0xA7, 0xA8, 0xA9, 0xAA, 0xB2, 0xB3, 0xB4,
-    0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, 0xC2, 0xC3,
-    0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xD2,
-    0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA,
-    0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9,
-    0xEA, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8,
-    0xF9, 0xFA  }
-};
-
 static const uint8_t vec_len_syms[2][4] = {
     { 4, 2, 3, 1 },
     { 4, 1, 2, 3 }
@@ -168,8 +119,11 @@ static av_cold int mss4_init_vlcs(MSS4Context *ctx)
         ret = mss4_init_vlc(&ctx->dc_vlc[i], mss4_dc_vlc_lens[i], NULL);
         if (ret)
             return ret;
-        ret = mss4_init_vlc(&ctx->ac_vlc[i], mss4_ac_vlc_lens[i],
-                            mss4_ac_vlc_syms[i]);
+        ret = mss4_init_vlc(&ctx->ac_vlc[i],
+                            i ? avpriv_mjpeg_bits_ac_chrominance + 1
+                              : avpriv_mjpeg_bits_ac_luminance   + 1,
+                            i ? avpriv_mjpeg_val_ac_chrominance
+                              : avpriv_mjpeg_val_ac_luminance);
         if (ret)
             return ret;
         ret = mss4_init_vlc(&ctx->vec_entry_vlc[i], mss4_vec_entry_vlc_lens[i],
-- 
2.25.1