avcodec/sp5x: Remove unused quant tables

Only the fifth one is used.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>

3 files changed, 5 insertions, 96 deletions

diff --git a/libavcodec/mpegvideo_enc.c b/libavcodec/mpegvideo_enc.c
index d3b30c73dc..34dcf8c313 100644
--- a/libavcodec/mpegvideo_enc.c
+++ b/libavcodec/mpegvideo_enc.c
@@ -3881,8 +3881,8 @@ static int encode_picture(MpegEncContext *s, int picture_number)
         for(i=1;i<64;i++){
             int j= s->idsp.idct_permutation[ff_zigzag_direct[i]];
 
-            s->intra_matrix[j] = sp5x_quant_table[5*2+0][i];
-            s->chroma_intra_matrix[j] = sp5x_quant_table[5*2+1][i];
+            s->intra_matrix[j]        = sp5x_qscale_five_quant_table[0][i];
+            s->chroma_intra_matrix[j] = sp5x_qscale_five_quant_table[1][i];
         }
         s->y_dc_scale_table= y;
         s->c_dc_scale_table= c;
diff --git a/libavcodec/sp5x.h b/libavcodec/sp5x.h
index 21c45715d0..d84d851768 100644
--- a/libavcodec/sp5x.h
+++ b/libavcodec/sp5x.h
@@ -132,58 +132,8 @@ static const uint8_t sp5x_data_dht[] = {
 };
 
 
-static const uint8_t sp5x_quant_table[20][64]=
+static const uint8_t sp5x_qscale_five_quant_table[][64]=
 {
-    /* index 0, Q50 */
-    {  16, 11, 12, 14, 12, 10, 16, 14, 13, 14, 18, 17, 16, 19, 24, 40,
-       26, 24, 22, 22, 24, 49, 35, 37, 29, 40, 58, 51, 61, 60, 57, 51,
-       56, 55, 64, 72, 92, 78, 64, 68, 87, 69, 55, 56, 80,109, 81, 87,
-       95, 98,103,104,103, 62, 77,113,121,112,100,120, 92,101,103, 99 },
-    {  17, 18, 18, 24, 21, 24, 47, 26, 26, 47, 99, 66, 56, 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, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99 },
-
-    /* index 1, Q70 */
-    {  10,  7,  7,  8,  7,  6, 10,  8,  8,  8, 11, 10, 10, 11, 14, 24,
-       16, 14, 13, 13, 14, 29, 21, 22, 17, 24, 35, 31, 37, 36, 34, 31,
-       34, 33, 38, 43, 55, 47, 38, 41, 52, 41, 33, 34, 48, 65, 49, 52,
-       57, 59, 62, 62, 62, 37, 46, 68, 73, 67, 60, 72, 55, 61, 62, 59 },
-    {  10, 11, 11, 14, 13, 14, 28, 16, 16, 28, 59, 40, 34, 40, 59, 59,
-       59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59,
-       59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59,
-       59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59 },
-
-    /* index 2, Q80 */
-    {   6,  4,  5,  6,  5,  4,  6,  6,  5,  6,  7,  7,  6,  8, 10, 16,
-       10, 10,  9,  9, 10, 20, 14, 15, 12, 16, 23, 20, 24, 24, 23, 20,
-       22, 22, 26, 29, 37, 31, 26, 27, 35, 28, 22, 22, 32, 44, 32, 35,
-       38, 39, 41, 42, 41, 25, 31, 45, 48, 45, 40, 48, 37, 40, 41, 40 },
-    {   7,  7,  7, 10,  8, 10, 19, 10, 10, 19, 40, 26, 22, 26, 40, 40,
-       40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40,
-       40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40,
-       40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40 },
-
-    /* index 3, Q85 */
-    {   5,  3,  4,  4,  4,  3,  5,  4,  4,  4,  5,  5,  5,  6,  7, 12,
-        8,  7,  7,  7,  7, 15, 11, 11,  9, 12, 17, 15, 18, 18, 17, 15,
-       17, 17, 19, 22, 28, 23, 19, 20, 26, 21, 17, 17, 24, 33, 24, 26,
-       29, 29, 31, 31, 31, 19, 23, 34, 36, 34, 30, 36, 28, 30, 31, 30 },
-    {   5,  5,  5,  7,  6,  7, 14,  8,  8, 14, 30, 20, 17, 20, 30, 30,
-       30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,
-       30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,
-       30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30 },
-
-    /* index 4, Q90 */
-    {   3,  2,  2,  3,  2,  2,  3,  3,  3,  3,  4,  3,  3,  4,  5,  8,
-        5,  5,  4,  4,  5, 10,  7,  7,  6,  8, 12, 10, 12, 12, 11, 10,
-       11, 11, 13, 14, 18, 16, 13, 14, 17, 14, 11, 11, 16, 22, 16, 17,
-       19, 20, 21, 21, 21, 12, 15, 23, 24, 22, 20, 24, 18, 20, 21, 20 },
-    {   3,  4,  4,  5,  4,  5,  9,  5,  5,  9, 20, 13, 11, 13, 20, 20,
-       20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
-       20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
-       20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20 },
-
     /* index 5, Q60 */
     {  13,  9, 10, 11, 10,  8, 13, 11, 10, 11, 14, 14, 13, 15, 19, 32,
        21, 19, 18, 18, 19, 39, 28, 30, 23, 32, 46, 41, 49, 48, 46, 41,
@@ -193,46 +143,6 @@ static const uint8_t sp5x_quant_table[20][64]=
        79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79,
        79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79,
        79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79 },
-
-    /* index 6, Q25 */
-    {  32, 22, 24, 28, 24, 20, 32, 28, 26, 28, 36, 34, 32, 38, 48, 80,
-       52, 48, 44, 44, 48, 98, 70, 74, 58, 80,116,102,122,120,114,102,
-      112,110,128,144,184,156,128,136,174,138,110,112,160,218,162,174,
-      190,196,206,208,206,124,154,226,242,224,200,240,184,202,206,198 },
-    {  34, 36, 36, 48, 42, 48, 94, 52, 52, 94,198,132,112,132,198,198,
-      198,198,198,198,198,198,198,198,198,198,198,198,198,198,198,198,
-      198,198,198,198,198,198,198,198,198,198,198,198,198,198,198,198,
-      198,198,198,198,198,198,198,198,198,198,198,198,198,198,198,198 },
-
-    /* index 7, Q95 */
-    {   2,  1,  1,  1,  1,  1,  2,  1,  1,  1,  2,  2,  2,  2,  2,  4,
-        3,  2,  2,  2,  2,  5,  4,  4,  3,  4,  6,  5,  6,  6,  6,  5,
-        6,  6,  6,  7,  9,  8,  6,  7,  9,  7,  6,  6,  8, 11,  8,  9,
-       10, 10, 10, 10, 10,  6,  8, 11, 12, 11, 10, 12,  9, 10, 10, 10 },
-    {   2,  2,  2,  2,  2,  2,  5,  3,  3,  5, 10,  7,  6,  7, 10, 10,
-       10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10,
-       10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10,
-       10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10 },
-
-    /* index 8, Q93 */
-    {   2,  2,  2,  2,  2,  1,  2,  2,  2,  2,  3,  2,  2,  3,  3,  6,
-        4,  3,  3,  3,  3,  7,  5,  5,  4,  6,  8,  7,  9,  8,  8,  7,
-        8,  8,  9, 10, 13, 11,  9, 10, 12, 10,  8,  8, 11, 15, 11, 12,
-       13, 14, 14, 15, 14,  9, 11, 16, 17, 16, 14, 17, 13, 14, 14, 14 },
-    {   2,  3,  3,  3,  3,  3,  7,  4,  4,  7, 14,  9,  8,  9, 14, 14,
-       14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
-       14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
-       14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14 },
-
-    /* index 9, Q40 */
-    {  20, 14, 15, 18, 15, 13, 20, 18, 16, 18, 23, 21, 20, 24, 30, 50,
-       33, 30, 28, 28, 30, 61, 44, 46, 36, 50, 73, 64, 76, 75, 71, 64,
-       70, 69, 80, 90,115, 98, 80, 85,109, 86, 69, 70,100,136,101,109,
-      119,123,129,130,129, 78, 96,141,151,140,125,150,115,126,129,124 },
-    {  21, 23, 23, 30, 26, 30, 59, 33, 33, 59,124, 83, 70, 83,124,124,
-      124,124,124,124,124,124,124,124,124,124,124,124,124,124,124,124,
-      124,124,124,124,124,124,124,124,124,124,124,124,124,124,124,124,
-      124,124,124,124,124,124,124,124,124,124,124,124,124,124,124,124 }
 };
 
 #endif /* AVCODEC_SP5X_H */
diff --git a/libavcodec/sp5xdec.c b/libavcodec/sp5xdec.c
index 302fdb073e..0b2b2d8418 100644
--- a/libavcodec/sp5xdec.c
+++ b/libavcodec/sp5xdec.c
@@ -35,7 +35,6 @@ int ff_sp5x_process_packet(AVCodecContext *avctx, AVPacket *avpkt)
     const uint8_t *buf = avpkt->data;
     int buf_size = avpkt->size;
     AVBufferRef *buf_recoded;
-    const int qscale = 5;
     uint8_t *recoded;
     int i = 0, j = 0;
 
@@ -52,8 +51,8 @@ int ff_sp5x_process_packet(AVCodecContext *avctx, AVPacket *avpkt)
     recoded[j++] = 0xD8;
 
     memcpy(recoded+j, &sp5x_data_dqt[0], sizeof(sp5x_data_dqt));
-    memcpy(recoded+j+5, &sp5x_quant_table[qscale * 2], 64);
-    memcpy(recoded+j+70, &sp5x_quant_table[(qscale * 2) + 1], 64);
+    memcpy(recoded + j + 5,  &sp5x_qscale_five_quant_table[0], 64);
+    memcpy(recoded + j + 70, &sp5x_qscale_five_quant_table[1], 64);
     j += sizeof(sp5x_data_dqt);
 
     memcpy(recoded+j, &sp5x_data_dht[0], sizeof(sp5x_data_dht));