Mark some arrays that never change as const.

configure

@@ -5414,7 +5414,7 @@ print_enabled_components(){
     struct_name=$2
     name=$3
     shift 3
-    echo "static const $struct_name *$name[] = {" > $TMPH
+    echo "static const $struct_name * const $name[] = {" > $TMPH
     for c in $*; do
         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
     done

libavcodec/aaccoder.c

@@ -53,7 +53,7 @@ static const uint8_t run_value_bits_short[16] = {
     3, 3, 3, 3, 3, 3, 3, 6, 6, 6, 6, 6, 6, 6, 6, 9
 };
 
-static const uint8_t *run_value_bits[2] = {
+static const uint8_t * const run_value_bits[2] = {
     run_value_bits_long, run_value_bits_short
 };
 
@@ -1112,7 +1112,7 @@ static void search_for_ms(AACEncContext *s, ChannelElement *cpe,
     }
 }
 
-AACCoefficientsEncoder ff_aac_coders[] = {
+const AACCoefficientsEncoder ff_aac_coders[] = {
     {
         search_for_quantizers_faac,
         encode_window_bands_info,

libavcodec/aacenc.c

@@ -98,7 +98,7 @@ static const uint8_t swb_size_1024_8[] = {
     32, 36, 36, 40, 44, 48, 52, 56, 60, 64, 80
 };
 
-static const uint8_t *swb_size_1024[] = {
+static const uint8_t * const swb_size_1024[] = {
     swb_size_1024_96, swb_size_1024_96, swb_size_1024_64,
     swb_size_1024_48, swb_size_1024_48, swb_size_1024_32,
     swb_size_1024_24, swb_size_1024_24, swb_size_1024_16,
@@ -125,7 +125,7 @@ static const uint8_t swb_size_128_8[] = {
     4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 12, 16, 20, 20
 };
 
-static const uint8_t *swb_size_128[] = {
+static const uint8_t * const swb_size_128[] = {
     /* the last entry on the following row is swb_size_128_64 but is a
        duplicate of swb_size_128_96 */
     swb_size_128_96, swb_size_128_96, swb_size_128_96,

libavcodec/aacenc.h

@@ -46,7 +46,7 @@ typedef struct AACCoefficientsEncoder {
     void (*search_for_ms)(struct AACEncContext *s, ChannelElement *cpe, const float lambda);
 } AACCoefficientsEncoder;
 
-extern AACCoefficientsEncoder ff_aac_coders[];
+extern const AACCoefficientsEncoder ff_aac_coders[];
 
 /**
  * AAC encoder context
@@ -67,7 +67,7 @@ typedef struct AACEncContext {
     ChannelElement *cpe;                         ///< channel elements
     FFPsyContext psy;
     struct FFPsyPreprocessContext* psypp;
-    AACCoefficientsEncoder *coder;
+    const AACCoefficientsEncoder *coder;
     int cur_channel;
     int last_frame;
     float lambda;

libavcodec/aic.c

@@ -133,7 +133,7 @@ static const uint8_t aic_c_ext_scan[192] = {
     177, 184, 176, 169, 162, 161, 168, 160,
 };
 
-static const uint8_t *aic_scan[NUM_BANDS] = {
+static const uint8_t * const aic_scan[NUM_BANDS] = {
     aic_y_scan, aic_c_scan, aic_y_ext_scan, aic_c_ext_scan
 };
 

libavcodec/amrnbdata.h

@@ -1655,10 +1655,10 @@ static const float ir_filter_medium[AMR_SUBFRAME_SIZE] = {
  0.016998,  0.023804, -0.041779,  0.025696,  0.019989,
 };
 
-static const float *ir_filters_lookup[2]           = {
+static const float * const ir_filters_lookup[2]           = {
     ir_filter_strong,           ir_filter_medium
 };
-static const float *ir_filters_lookup_MODE_7k95[2] = {
+static const float * const ir_filters_lookup_MODE_7k95[2] = {
     ir_filter_strong_MODE_7k95, ir_filter_medium
 };
 

libavcodec/amrwbdata.h

@@ -673,7 +673,7 @@ static const uint16_t order_MODE_23k85[] = {
 };
 
 /** Reordering array addresses for each mode */
-static const uint16_t* amr_bit_orderings_by_mode[] = {
+static const uint16_t * const amr_bit_orderings_by_mode[] = {
     order_MODE_6k60,
     order_MODE_8k85,
     order_MODE_12k65,
@@ -1805,7 +1805,7 @@ static const float ir_filter_mid[64] = {
     -7.501221e-02,  2.920532e-02,  1.660156e-02,  7.751465e-02
 };
 
-static const float *ir_filters_lookup[2] = {
+static const float * const ir_filters_lookup[2] = {
     ir_filter_str, ir_filter_mid
 };
 

libavcodec/atrac3plus.c

@@ -82,52 +82,52 @@ av_cold void ff_atrac3p_init_vlcs(AVCodec *codec)
 {
     int i, wl_vlc_offs, ct_vlc_offs, sf_vlc_offs, tab_offset;
 
-    static int wl_nb_bits[4]  = { 2, 3, 5, 5 };
+    static const int wl_nb_bits[4]  = { 2, 3, 5, 5 };
-    static int wl_nb_codes[4] = { 3, 5, 8, 8 };
+    static const int wl_nb_codes[4] = { 3, 5, 8, 8 };
-    static const uint8_t *wl_bits[4] = {
+    static const uint8_t * const wl_bits[4] = {
         atrac3p_wl_huff_bits1, atrac3p_wl_huff_bits2,
         atrac3p_wl_huff_bits3, atrac3p_wl_huff_bits4
     };
-    static const uint8_t *wl_codes[4] = {
+    static const uint8_t * const wl_codes[4] = {
         atrac3p_wl_huff_code1, atrac3p_wl_huff_code2,
         atrac3p_wl_huff_code3, atrac3p_wl_huff_code4
     };
-    static const uint8_t *wl_xlats[4] = {
+    static const uint8_t * const wl_xlats[4] = {
         atrac3p_wl_huff_xlat1, atrac3p_wl_huff_xlat2, NULL, NULL
     };
 
-    static int ct_nb_bits[4]  = { 3, 4, 4, 4 };
+    static const int ct_nb_bits[4]  = { 3, 4, 4, 4 };
-    static int ct_nb_codes[4] = { 4, 8, 8, 8 };
+    static const int ct_nb_codes[4] = { 4, 8, 8, 8 };
-    static const uint8_t *ct_bits[4]  = {
+    static const uint8_t * const ct_bits[4]  = {
         atrac3p_ct_huff_bits1, atrac3p_ct_huff_bits2,
         atrac3p_ct_huff_bits2, atrac3p_ct_huff_bits3
     };
-    static const uint8_t *ct_codes[4] = {
+    static const uint8_t * const ct_codes[4] = {
         atrac3p_ct_huff_code1, atrac3p_ct_huff_code2,
         atrac3p_ct_huff_code2, atrac3p_ct_huff_code3
     };
-    static const uint8_t *ct_xlats[4] = {
+    static const uint8_t * const ct_xlats[4] = {
         NULL, NULL, atrac3p_ct_huff_xlat1, NULL
     };
 
-    static int sf_nb_bits[8]  = {  9,  9,  9,  9,  6,  6,  7,  7 };
+    static const int sf_nb_bits[8]  = {  9,  9,  9,  9,  6,  6,  7,  7 };
-    static int sf_nb_codes[8] = { 64, 64, 64, 64, 16, 16, 16, 16 };
+    static const int sf_nb_codes[8] = { 64, 64, 64, 64, 16, 16, 16, 16 };
-    static const uint8_t  *sf_bits[8]  = {
+    static const uint8_t  * const sf_bits[8]  = {
         atrac3p_sf_huff_bits1, atrac3p_sf_huff_bits1, atrac3p_sf_huff_bits2,
         atrac3p_sf_huff_bits3, atrac3p_sf_huff_bits4, atrac3p_sf_huff_bits4,
         atrac3p_sf_huff_bits5, atrac3p_sf_huff_bits6
     };
-    static const uint16_t *sf_codes[8] = {
+    static const uint16_t * const sf_codes[8] = {
         atrac3p_sf_huff_code1, atrac3p_sf_huff_code1, atrac3p_sf_huff_code2,
         atrac3p_sf_huff_code3, atrac3p_sf_huff_code4, atrac3p_sf_huff_code4,
         atrac3p_sf_huff_code5, atrac3p_sf_huff_code6
     };
-    static const uint8_t  *sf_xlats[8] = {
+    static const uint8_t  * const sf_xlats[8] = {
         atrac3p_sf_huff_xlat1, atrac3p_sf_huff_xlat2, NULL, NULL,
         atrac3p_sf_huff_xlat4, atrac3p_sf_huff_xlat5, NULL, NULL
     };
 
-    static const uint8_t *gain_cbs[11] = {
+    static const uint8_t * const gain_cbs[11] = {
         atrac3p_huff_gain_npoints1_cb, atrac3p_huff_gain_npoints1_cb,
         atrac3p_huff_gain_lev1_cb, atrac3p_huff_gain_lev2_cb,
         atrac3p_huff_gain_lev3_cb, atrac3p_huff_gain_lev4_cb,
@@ -135,7 +135,7 @@ av_cold void ff_atrac3p_init_vlcs(AVCodec *codec)
         atrac3p_huff_gain_loc4_cb, atrac3p_huff_gain_loc2_cb,
         atrac3p_huff_gain_loc5_cb
     };
-    static const uint8_t *gain_xlats[11] = {
+    static const uint8_t * const gain_xlats[11] = {
         NULL, atrac3p_huff_gain_npoints2_xlat, atrac3p_huff_gain_lev1_xlat,
         atrac3p_huff_gain_lev2_xlat, atrac3p_huff_gain_lev3_xlat,
         atrac3p_huff_gain_lev4_xlat, atrac3p_huff_gain_loc3_xlat,
@@ -143,13 +143,13 @@ av_cold void ff_atrac3p_init_vlcs(AVCodec *codec)
         atrac3p_huff_gain_loc2_xlat, atrac3p_huff_gain_loc5_xlat
     };
 
-    static const uint8_t *tone_cbs[7] = {
+    static const uint8_t * const tone_cbs[7] = {
         atrac3p_huff_tonebands_cb,  atrac3p_huff_numwavs1_cb,
         atrac3p_huff_numwavs2_cb,   atrac3p_huff_wav_ampsf1_cb,
         atrac3p_huff_wav_ampsf2_cb, atrac3p_huff_wav_ampsf3_cb,
         atrac3p_huff_freq_cb
     };
-    static const uint8_t *tone_xlats[7] = {
+    static const uint8_t * const tone_xlats[7] = {
         NULL, NULL, atrac3p_huff_numwavs2_xlat, atrac3p_huff_wav_ampsf1_xlat,
         atrac3p_huff_wav_ampsf2_xlat, atrac3p_huff_wav_ampsf3_xlat,
         atrac3p_huff_freq_xlat

libavcodec/dfa.c

@@ -322,7 +322,7 @@ static const chunk_decoder decoder[8] = {
     decode_tdlt, decode_dsw1, decode_blck, decode_dds1,
 };
 
-static const char* chunk_name[8] = {
+static const char * const chunk_name[8] = {
     "COPY", "TSW1", "BDLT", "WDLT", "TDLT", "DSW1", "BLCK", "DDS1"
 };
 

libavcodec/g722dec.c

@@ -80,7 +80,7 @@ static const int16_t low_inv_quant5[32] = {
      587,   473,   370,   276,   190,   110,    35,   -35
 };
 
-static const int16_t *low_inv_quants[3] = { ff_g722_low_inv_quant6,
+static const int16_t * const low_inv_quants[3] = { ff_g722_low_inv_quant6,
                                                            low_inv_quant5,
                                                    ff_g722_low_inv_quant4 };
 

libavcodec/h263data.c

@@ -264,11 +264,11 @@ const uint8_t ff_h263_chroma_qscale_table[32] = {
     0, 1, 2, 3, 4, 5, 6, 6, 7, 8, 9, 9, 10, 10, 11, 11, 12, 12, 12, 13, 13, 13, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15
 };
 
-uint16_t ff_mba_max[6] = {
+const uint16_t ff_mba_max[6] = {
     47, 98, 395, 1583, 6335, 9215
 };
 
-uint8_t ff_mba_length[7] = {
+const uint8_t ff_mba_length[7] = {
     6, 7, 9, 11, 13, 14, 14
 };
 

libavcodec/h263data.h

@@ -71,7 +71,7 @@ extern const uint8_t ff_modified_quant_tab[2][32];
 
 extern const uint8_t ff_h263_chroma_qscale_table[32];
 
-extern uint16_t ff_mba_max[6];
+extern const uint16_t ff_mba_max[6];
-extern uint8_t ff_mba_length[7];
+extern const uint8_t ff_mba_length[7];
 
 #endif /* AVCODEC_H263DATA_H */

libavcodec/indeo3.c

@@ -118,8 +118,8 @@ static uint8_t requant_tab[8][128];
  */
 static av_cold void build_requant_tab(void)
 {
-    static int8_t offsets[8] = { 1, 1, 2, -3, -3, 3, 4, 4 };
+    static const int8_t offsets[8] = { 1, 1, 2, -3, -3, 3, 4, 4 };
-    static int8_t deltas [8] = { 0, 1, 0,  4,  4, 1, 0, 1 };
+    static const int8_t deltas [8] = { 0, 1, 0,  4,  4, 1, 0, 1 };
 
     int i, j, step;
 

libavcodec/indeo4data.h

@@ -60,7 +60,7 @@ static const uint8_t ivi4_horizontal_scan_4x4[16] = {
     0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
 };
 
-static const uint8_t *scan_index_to_tab[15] = {
+static const uint8_t * const scan_index_to_tab[15] = {
     // for 8x8 transforms
     ff_zigzag_direct,
     ivi4_alternate_scan_8x8,

libavcodec/mpeg4videodec.c

@@ -1274,7 +1274,7 @@ static int mpeg4_decode_mb(MpegEncContext *s, int16_t block[6][64])
     Mpeg4DecContext *ctx = (Mpeg4DecContext *)s;
     int cbpc, cbpy, i, cbp, pred_x, pred_y, mx, my, dquant;
     int16_t *mot_val;
-    static int8_t quant_tab[4] = { -1, -2, 1, 2 };
+    static const int8_t quant_tab[4] = { -1, -2, 1, 2 };
     const int xy = s->mb_x + s->mb_y * s->mb_stride;
 
     assert(s->h263_pred);

libavcodec/on2avc.c

@@ -320,7 +320,7 @@ static void zero_head_and_tail(float *src, int len, int order0, int order1)
 }
 
 static void pretwiddle(float *src, float *dst, int dst_len, int tab_step,
-                       int step, int order0, int order1, const double **tabs)
+                       int step, int order0, int order1, const double * const *tabs)
 {
     float *src2, *out;
     const double *tab;
@@ -348,7 +348,7 @@ static void pretwiddle(float *src, float *dst, int dst_len, int tab_step,
 
 static void twiddle(float *src1, float *src2, int src2_len,
                     const double *tab, int tab_len, int step,
-                    int order0, int order1, const double **tabs)
+                    int order0, int order1, const double * const *tabs)
 {
     int steps;
     int mask;

libavcodec/on2avcdata.c

@@ -7641,11 +7641,11 @@ static const double tabs_4_10[4 * 2][10] = {
      -0.099339873,     -0.041293536,    0.31028851,     0.17727433,    -0.92756648 }
 };
 
-const double *ff_on2avc_tabs_4_10_1[4] = {
+const double * const ff_on2avc_tabs_4_10_1[4] = {
     tabs_4_10[0], tabs_4_10[1], tabs_4_10[2], tabs_4_10[3]
 };
 
-const double *ff_on2avc_tabs_4_10_2[4] = {
+const double * const ff_on2avc_tabs_4_10_2[4] = {
     tabs_4_10[4], tabs_4_10[5], tabs_4_10[6], tabs_4_10[7]
 };
 
@@ -7724,12 +7724,12 @@ static const double tabs_9_20[9 * 2][20] = {
       0.22783, 0.058894795, -0.61350902, 0.69559873, -0.27013783, }
 };
 
-const double* ff_on2avc_tabs_9_20_1[9] = {
+const double * const ff_on2avc_tabs_9_20_1[9] = {
     tabs_9_20[0], tabs_9_20[1], tabs_9_20[2], tabs_9_20[3], tabs_9_20[4],
     tabs_9_20[5], tabs_9_20[6], tabs_9_20[7], tabs_9_20[8]
 };
 
-const double* ff_on2avc_tabs_9_20_2[9] = {
+const double * const ff_on2avc_tabs_9_20_2[9] = {
     tabs_9_20[ 9], tabs_9_20[10], tabs_9_20[11], tabs_9_20[12], tabs_9_20[13],
     tabs_9_20[14], tabs_9_20[15], tabs_9_20[16], tabs_9_20[17]
 };
@@ -7927,7 +7927,7 @@ static const double tabs_19_40[19 * 2][40] = {
       0.019871848, -0.11989559, 0.036659135, 0.26632201, -0.3057397, -0.23220335, 0.68741352, -0.54024027, }
 };
 
-const double* ff_on2avc_tabs_19_40_1[19] = {
+const double * const ff_on2avc_tabs_19_40_1[19] = {
     tabs_19_40[ 0], tabs_19_40[ 1], tabs_19_40[ 2], tabs_19_40[ 3],
     tabs_19_40[ 4], tabs_19_40[ 5], tabs_19_40[ 6], tabs_19_40[ 7],
     tabs_19_40[ 8], tabs_19_40[ 9], tabs_19_40[10], tabs_19_40[11],
@@ -7935,7 +7935,7 @@ const double* ff_on2avc_tabs_19_40_1[19] = {
     tabs_19_40[16], tabs_19_40[17], tabs_19_40[18],
 };
 
-const double* ff_on2avc_tabs_19_40_2[19] = {
+const double * const ff_on2avc_tabs_19_40_2[19] = {
     tabs_19_40[19], tabs_19_40[20], tabs_19_40[21], tabs_19_40[22],
     tabs_19_40[23], tabs_19_40[24], tabs_19_40[25], tabs_19_40[26],
     tabs_19_40[27], tabs_19_40[28], tabs_19_40[29], tabs_19_40[30],
@@ -8826,7 +8826,7 @@ static const double tabs_20_84[20 * 4][84] = {
       0.51434408, -0.41486443, 0.27672635, -0.10432054, },
 };
 
-const double* ff_on2avc_tabs_20_84_1[20] = {
+const double * const ff_on2avc_tabs_20_84_1[20] = {
     tabs_20_84[ 0], tabs_20_84[ 1], tabs_20_84[ 2], tabs_20_84[ 3],
     tabs_20_84[ 4], tabs_20_84[ 5], tabs_20_84[ 6], tabs_20_84[ 7],
     tabs_20_84[ 8], tabs_20_84[ 9], tabs_20_84[10], tabs_20_84[11],
@@ -8834,7 +8834,7 @@ const double* ff_on2avc_tabs_20_84_1[20] = {
     tabs_20_84[16], tabs_20_84[17], tabs_20_84[18], tabs_20_84[19]
 };
 
-const double* ff_on2avc_tabs_20_84_2[20] = {
+const double * const ff_on2avc_tabs_20_84_2[20] = {
     tabs_20_84[20], tabs_20_84[21], tabs_20_84[22], tabs_20_84[23],
     tabs_20_84[24], tabs_20_84[25], tabs_20_84[26], tabs_20_84[27],
     tabs_20_84[28], tabs_20_84[29], tabs_20_84[30], tabs_20_84[31],
@@ -8842,7 +8842,7 @@ const double* ff_on2avc_tabs_20_84_2[20] = {
     tabs_20_84[36], tabs_20_84[37], tabs_20_84[38], tabs_20_84[39]
 };
 
-const double* ff_on2avc_tabs_20_84_3[20] = {
+const double * const ff_on2avc_tabs_20_84_3[20] = {
     tabs_20_84[40], tabs_20_84[41], tabs_20_84[42], tabs_20_84[43],
     tabs_20_84[44], tabs_20_84[45], tabs_20_84[46], tabs_20_84[47],
     tabs_20_84[48], tabs_20_84[49], tabs_20_84[50], tabs_20_84[51],
@@ -8850,7 +8850,7 @@ const double* ff_on2avc_tabs_20_84_3[20] = {
     tabs_20_84[56], tabs_20_84[57], tabs_20_84[58], tabs_20_84[59]
 };
 
-const double* ff_on2avc_tabs_20_84_4[20] = {
+const double * const ff_on2avc_tabs_20_84_4[20] = {
     tabs_20_84[60], tabs_20_84[61], tabs_20_84[62], tabs_20_84[63],
     tabs_20_84[64], tabs_20_84[65], tabs_20_84[66], tabs_20_84[67],
     tabs_20_84[68], tabs_20_84[69], tabs_20_84[70], tabs_20_84[71],

libavcodec/on2avcdata.h

@@ -64,16 +64,16 @@ extern const double ff_on2avc_tab_84_1[];
 extern const double ff_on2avc_tab_84_2[];
 extern const double ff_on2avc_tab_84_3[];
 extern const double ff_on2avc_tab_84_4[];
-extern const double* ff_on2avc_tabs_4_10_1[4];
+extern const double * const ff_on2avc_tabs_4_10_1[4];
-extern const double* ff_on2avc_tabs_4_10_2[4];
+extern const double * const ff_on2avc_tabs_4_10_2[4];
-extern const double* ff_on2avc_tabs_9_20_1[9];
+extern const double * const ff_on2avc_tabs_9_20_1[9];
-extern const double* ff_on2avc_tabs_9_20_2[9];
+extern const double * const ff_on2avc_tabs_9_20_2[9];
-extern const double* ff_on2avc_tabs_19_40_1[19];
+extern const double * const ff_on2avc_tabs_19_40_1[19];
-extern const double* ff_on2avc_tabs_19_40_2[19];
+extern const double * const ff_on2avc_tabs_19_40_2[19];
-extern const double* ff_on2avc_tabs_20_84_1[20];
+extern const double * const ff_on2avc_tabs_20_84_1[20];
-extern const double* ff_on2avc_tabs_20_84_2[20];
+extern const double * const ff_on2avc_tabs_20_84_2[20];
-extern const double* ff_on2avc_tabs_20_84_3[20];
+extern const double * const ff_on2avc_tabs_20_84_3[20];
-extern const double* ff_on2avc_tabs_20_84_4[20];
+extern const double * const ff_on2avc_tabs_20_84_4[20];
 extern const float ff_on2avc_ctab_1[2048];
 extern const float ff_on2avc_ctab_2[2048];
 extern const float ff_on2avc_ctab_3[2048];

libavcodec/opus_silk.c

@@ -1323,7 +1323,7 @@ static void silk_decode_frame(SilkContext *s, OpusRangeCoder *rc,
         if (lag_absolute) {
             /* primary lag is coded absolute */
             int highbits, lowbits;
-            static const uint16_t *model[] = {
+            static const uint16_t * const model[] = {
                 silk_model_pitch_lowbits_nb, silk_model_pitch_lowbits_mb,
                 silk_model_pitch_lowbits_wb
             };
@@ -1357,11 +1357,11 @@ static void silk_decode_frame(SilkContext *s, OpusRangeCoder *rc,
         ltpfilter = opus_rc_getsymbol(rc, silk_model_ltp_filter);
         for (i = 0; i < s->subframes; i++) {
             int index, j;
-            static const uint16_t *filter_sel[] = {
+            static const uint16_t * const filter_sel[] = {
                 silk_model_ltp_filter0_sel, silk_model_ltp_filter1_sel,
                 silk_model_ltp_filter2_sel
             };
-            static const int8_t (*filter_taps[])[5] = {
+            static const int8_t (* const filter_taps[])[5] = {
                 silk_ltp_filter0_taps, silk_ltp_filter1_taps, silk_ltp_filter2_taps
             };
             index = opus_rc_getsymbol(rc, filter_sel[ltpfilter]);

libavcodec/qsvdec_h2645.c

@@ -84,8 +84,8 @@ static av_cold int qsv_decode_init(AVCodecContext *avctx)
     int ret;
 
     if (avctx->codec_id == AV_CODEC_ID_HEVC && s->load_plugin != LOAD_PLUGIN_NONE) {
-        static const char *uid_hevcdec_sw = "15dd936825ad475ea34e35f3f54217a6";
+        static const char * const uid_hevcdec_sw = "15dd936825ad475ea34e35f3f54217a6";
-        static const char *uid_hevcdec_hw = "33a61c0b4c27454ca8d85dde757c6f8e";
+        static const char * const uid_hevcdec_hw = "33a61c0b4c27454ca8d85dde757c6f8e";
 
         if (s->qsv.load_plugins[0]) {
             av_log(avctx, AV_LOG_WARNING,

libavcodec/qsvenc_hevc.c

@@ -161,8 +161,8 @@ static av_cold int qsv_enc_init(AVCodecContext *avctx)
     int ret;
 
     if (q->load_plugin != LOAD_PLUGIN_NONE) {
-        static const char *uid_hevcenc_sw = "2fca99749fdb49aeb121a5b63ef568f7";
+        static const char * const uid_hevcenc_sw = "2fca99749fdb49aeb121a5b63ef568f7";
-        static const char *uid_hevcenc_hw = "6fadc791a0c2eb479ab6dcd5ea9da347";
+        static const char * const uid_hevcenc_hw = "6fadc791a0c2eb479ab6dcd5ea9da347";
 
         if (q->qsv.load_plugins[0]) {
             av_log(avctx, AV_LOG_WARNING,

libavcodec/sipr.c

@@ -139,7 +139,7 @@ const float ff_pow_0_5[] = {
     1.0/(1 << 13), 1.0/(1 << 14), 1.0/(1 << 15), 1.0/(1 << 16)
 };
 
-static void dequant(float *out, const int *idx, const float *cbs[])
+static void dequant(float *out, const int *idx, const float * const cbs[])
 {
     int i;
     int stride  = 2;

libavcodec/sipr16k.c

@@ -51,7 +51,7 @@ static void lsf2lsp(const float *lsf, double *lsp)
         lsp[i] = cosf(lsf[i]);
 }
 
-static void dequant(float *out, const int *idx, const float *cbs[])
+static void dequant(float *out, const int *idx, const float * const cbs[])
 {
     int i;
 

libavcodec/sipr16kdata.h

@@ -525,7 +525,7 @@ static const float lsf_cb5_16k[128][4] = {
     { 0.124405,  0.009943, -0.148477, -0.205184}
 };
 
-static const float *lsf_codebooks_16k[] = {
+static const float * const lsf_codebooks_16k[] = {
     lsf_cb1_16k[0], lsf_cb2_16k[0], lsf_cb3_16k[0], lsf_cb4_16k[0],
     lsf_cb5_16k[0]
 };

libavcodec/siprdata.h

@@ -206,7 +206,7 @@ static const float lsf_cb5[32][2] = {
     { 0.150514,  0.034366}, { 0.186092, -0.069272}
 };
 
-static const float *lsf_codebooks[] = {
+static const float * const lsf_codebooks[] = {
     lsf_cb1[0], lsf_cb2[0], lsf_cb3[0], lsf_cb4[0], lsf_cb5[0]
 };
 

libavcodec/tscc2data.h

@@ -903,14 +903,14 @@ static const int tscc2_ac_vlc_sizes[NUM_VLC_SETS] = {
     172, 169, 165, 162, 131, 132, 130, 125, 121, 114, 110, 101, 96
 };
 
-static const uint16_t *tscc2_ac_vlc_syms[NUM_VLC_SETS] = {
+static const uint16_t * const tscc2_ac_vlc_syms[NUM_VLC_SETS] = {
     ac_vlc_desc0_syms, ac_vlc_desc1_syms, ac_vlc_desc2_syms, ac_vlc_desc3_syms,
     ac_vlc_desc4_syms, ac_vlc_desc5_syms, ac_vlc_desc6_syms, ac_vlc_desc7_syms,
     ac_vlc_desc8_syms, ac_vlc_desc9_syms, ac_vlc_descA_syms, ac_vlc_descB_syms,
     ac_vlc_descC_syms,
 };
 
-static const uint16_t *tscc2_ac_vlc_codes[NUM_VLC_SETS] = {
+static const uint16_t * const tscc2_ac_vlc_codes[NUM_VLC_SETS] = {
     ac_vlc_desc0_codes, ac_vlc_desc1_codes, ac_vlc_desc2_codes,
     ac_vlc_desc3_codes, ac_vlc_desc4_codes, ac_vlc_desc5_codes,
     ac_vlc_desc6_codes, ac_vlc_desc7_codes, ac_vlc_desc8_codes,
@@ -918,7 +918,7 @@ static const uint16_t *tscc2_ac_vlc_codes[NUM_VLC_SETS] = {
     ac_vlc_descC_codes,
 };
 
-static const uint8_t *tscc2_ac_vlc_bits[NUM_VLC_SETS] = {
+static const uint8_t * const tscc2_ac_vlc_bits[NUM_VLC_SETS] = {
     ac_vlc_desc0_bits, ac_vlc_desc1_bits, ac_vlc_desc2_bits, ac_vlc_desc3_bits,
     ac_vlc_desc4_bits, ac_vlc_desc5_bits, ac_vlc_desc6_bits, ac_vlc_desc7_bits,
     ac_vlc_desc8_bits, ac_vlc_desc9_bits, ac_vlc_descA_bits, ac_vlc_descB_bits,

libavcodec/vaapi_encode.c

@@ -27,7 +27,7 @@
 #include "vaapi_encode.h"
 #include "avcodec.h"
 
-static const char *picture_type_name[] = { "IDR", "I", "P", "B" };
+static const char * const picture_type_name[] = { "IDR", "I", "P", "B" };
 
 static int vaapi_encode_make_packed_header(AVCodecContext *avctx,
                                            VAAPIEncodePicture *pic,

libavcodec/vaapi_encode_mjpeg.c

@@ -361,7 +361,7 @@ static av_cold int vaapi_encode_mjpeg_configure(AVCodecContext *avctx)
     return 0;
 }
 
-static VAAPIEncodeType vaapi_encode_type_mjpeg = {
+static const VAAPIEncodeType vaapi_encode_type_mjpeg = {
     .priv_data_size        = sizeof(VAAPIEncodeMJPEGContext),
 
     .configure             = &vaapi_encode_mjpeg_configure,

libavcodec/vp8.c

@@ -1166,7 +1166,7 @@ void decode_mb_mode(VP8Context *s, VP8Macroblock *mb, int mb_x, int mb_y,
                     uint8_t *segment, uint8_t *ref, int layout, int is_vp7)
 {
     VP56RangeCoder *c = &s->c;
-    static const char *vp7_feature_name[] = { "q-index",
+    static const char * const vp7_feature_name[] = { "q-index",
                                                      "lf-delta",
                                                      "partial-golden-update",
                                                      "blit-pitch" };

libavcodec/vp9block.c

@@ -842,8 +842,8 @@ static int decode_coeffs(AVCodecContext *avctx)
     int uvstep1d = 1 << b->uvtx, uvstep = 1 << (b->uvtx * 2), ret;
     int16_t (*qmul)[2] = s->segmentation.feat[b->seg_id].qmul;
     int tx = 4 * s->lossless + b->tx;
-    const int16_t **yscans = ff_vp9_scans[tx];
+    const int16_t * const *yscans = ff_vp9_scans[tx];
-    const int16_t (**ynbs)[2] = ff_vp9_scans_nb[tx];
+    const int16_t (* const * ynbs)[2] = ff_vp9_scans_nb[tx];
     const int16_t *uvscan = ff_vp9_scans[b->uvtx][DCT_DCT];
     const int16_t (*uvnb)[2] = ff_vp9_scans_nb[b->uvtx][DCT_DCT];
     uint8_t *a = &s->above_y_nnz_ctx[col * 2];

libavcodec/vp9data.c

@@ -483,7 +483,7 @@ const int16_t ff_vp9_default_scan_32x32[1024] = {
      924,  925,  956,  926,  957,  988,  927,  958,  989, 1020,  959,  990, 1021,  991, 1022, 1023,
 };
 
-const int16_t *ff_vp9_scans[5][4] = {
+const int16_t * const ff_vp9_scans[5][4] = {
     {
         ff_vp9_default_scan_4x4, ff_vp9_col_scan_4x4,
         ff_vp9_row_scan_4x4, ff_vp9_default_scan_4x4
@@ -1040,7 +1040,7 @@ const int16_t ff_vp9_default_scan_32x32_nb[1024][2] = {
     {  990,  959 }, { 1021,  990 }, { 1022,  991 }, {    0,    0 },
 };
 
-const int16_t (*ff_vp9_scans_nb[5][4])[2] = {
+const int16_t (* const ff_vp9_scans_nb[5][4])[2] = {
     {
         ff_vp9_default_scan_4x4_nb, ff_vp9_col_scan_4x4_nb,
         ff_vp9_row_scan_4x4_nb, ff_vp9_default_scan_4x4_nb

libavcodec/vp9data.h

@@ -48,7 +48,7 @@ extern const int16_t ff_vp9_default_scan_16x16[256];
 extern const int16_t ff_vp9_col_scan_16x16[256];
 extern const int16_t ff_vp9_row_scan_16x16[256];
 extern const int16_t ff_vp9_default_scan_32x32[1024];
-extern const int16_t *ff_vp9_scans[5][4];
+extern const int16_t * const ff_vp9_scans[5][4];
 extern const int16_t ff_vp9_default_scan_4x4_nb[16][2];
 extern const int16_t ff_vp9_col_scan_4x4_nb[16][2];
 extern const int16_t ff_vp9_row_scan_4x4_nb[16][2];
@@ -59,7 +59,7 @@ extern const int16_t ff_vp9_default_scan_16x16_nb[256][2];
 extern const int16_t ff_vp9_col_scan_16x16_nb[256][2];
 extern const int16_t ff_vp9_row_scan_16x16_nb[256][2];
 extern const int16_t ff_vp9_default_scan_32x32_nb[1024][2];
-extern const int16_t (*ff_vp9_scans_nb[5][4])[2];
+extern const int16_t (* const ff_vp9_scans_nb[5][4])[2];
 extern const uint8_t ff_vp9_model_pareto8[256][8];
 extern const ProbContext ff_vp9_default_probs;
 extern const uint8_t ff_vp9_default_coef_probs[4][2][2][6][6][3];

libavcodec/x86/fdct.c

@@ -70,7 +70,7 @@ DECLARE_ALIGNED(16, static const int16_t, fdct_one_corr)[8] = { X8(1) };
 
 DECLARE_ALIGNED(8, static const int32_t, fdct_r_row)[2] = {RND_FRW_ROW, RND_FRW_ROW };
 
-static struct
+static const struct
 {
  DECLARE_ALIGNED(16, const int32_t, fdct_r_row_sse2)[4];
 } fdct_r_row_sse2 =
@@ -153,7 +153,7 @@ DECLARE_ALIGNED(8, static const int16_t, tab_frw_01234567)[] = {  // forward_dct
   29692,  -12299,   26722,  -31521,
 };
 
-static struct
+static const struct
 {
  DECLARE_ALIGNED(16, const int16_t, tab_frw_01234567_sse2)[256];
 } tab_frw_01234567_sse2 =

libavcodec/x86/mlpdsp.c

@@ -45,12 +45,12 @@ extern char ff_mlp_iirorder_2;
 extern char ff_mlp_iirorder_1;
 extern char ff_mlp_iirorder_0;
 
-static const void *firtable[9] = { &ff_mlp_firorder_0, &ff_mlp_firorder_1,
+static const void * const firtable[9] = { &ff_mlp_firorder_0, &ff_mlp_firorder_1,
                                           &ff_mlp_firorder_2, &ff_mlp_firorder_3,
                                           &ff_mlp_firorder_4, &ff_mlp_firorder_5,
                                           &ff_mlp_firorder_6, &ff_mlp_firorder_7,
                                           &ff_mlp_firorder_8 };
-static const void *iirtable[5] = { &ff_mlp_iirorder_0, &ff_mlp_iirorder_1,
+static const void * const iirtable[5] = { &ff_mlp_iirorder_0, &ff_mlp_iirorder_1,
                                           &ff_mlp_iirorder_2, &ff_mlp_iirorder_3,
                                           &ff_mlp_iirorder_4 };
 

libavcodec/x86/videodsp_init.c

@@ -59,7 +59,7 @@ extern emu_edge_vfix_func ff_emu_edge_vfix20_mmx;
 extern emu_edge_vfix_func ff_emu_edge_vfix21_mmx;
 extern emu_edge_vfix_func ff_emu_edge_vfix22_mmx;
 #if ARCH_X86_32
-static emu_edge_vfix_func *vfixtbl_mmx[22] = {
+static emu_edge_vfix_func * const vfixtbl_mmx[22] = {
     &ff_emu_edge_vfix1_mmx,  &ff_emu_edge_vfix2_mmx,  &ff_emu_edge_vfix3_mmx,
     &ff_emu_edge_vfix4_mmx,  &ff_emu_edge_vfix5_mmx,  &ff_emu_edge_vfix6_mmx,
     &ff_emu_edge_vfix7_mmx,  &ff_emu_edge_vfix8_mmx,  &ff_emu_edge_vfix9_mmx,
@@ -78,7 +78,7 @@ extern emu_edge_vfix_func ff_emu_edge_vfix19_sse;
 extern emu_edge_vfix_func ff_emu_edge_vfix20_sse;
 extern emu_edge_vfix_func ff_emu_edge_vfix21_sse;
 extern emu_edge_vfix_func ff_emu_edge_vfix22_sse;
-static emu_edge_vfix_func *vfixtbl_sse[22] = {
+static emu_edge_vfix_func * const vfixtbl_sse[22] = {
     ff_emu_edge_vfix1_mmx,  ff_emu_edge_vfix2_mmx,  ff_emu_edge_vfix3_mmx,
     ff_emu_edge_vfix4_mmx,  ff_emu_edge_vfix5_mmx,  ff_emu_edge_vfix6_mmx,
     ff_emu_edge_vfix7_mmx,  ff_emu_edge_vfix8_mmx,  ff_emu_edge_vfix9_mmx,
@@ -107,7 +107,7 @@ extern emu_edge_hfix_func ff_emu_edge_hfix18_mmx;
 extern emu_edge_hfix_func ff_emu_edge_hfix20_mmx;
 extern emu_edge_hfix_func ff_emu_edge_hfix22_mmx;
 #if ARCH_X86_32
-static emu_edge_hfix_func *hfixtbl_mmx[11] = {
+static emu_edge_hfix_func * const hfixtbl_mmx[11] = {
     ff_emu_edge_hfix2_mmx,  ff_emu_edge_hfix4_mmx,  ff_emu_edge_hfix6_mmx,
     ff_emu_edge_hfix8_mmx,  ff_emu_edge_hfix10_mmx, ff_emu_edge_hfix12_mmx,
     ff_emu_edge_hfix14_mmx, ff_emu_edge_hfix16_mmx, ff_emu_edge_hfix18_mmx,
@@ -119,7 +119,7 @@ extern emu_edge_hfix_func ff_emu_edge_hfix16_sse2;
 extern emu_edge_hfix_func ff_emu_edge_hfix18_sse2;
 extern emu_edge_hfix_func ff_emu_edge_hfix20_sse2;
 extern emu_edge_hfix_func ff_emu_edge_hfix22_sse2;
-static emu_edge_hfix_func *hfixtbl_sse2[11] = {
+static emu_edge_hfix_func * const hfixtbl_sse2[11] = {
     ff_emu_edge_hfix2_mmx,  ff_emu_edge_hfix4_mmx,  ff_emu_edge_hfix6_mmx,
     ff_emu_edge_hfix8_mmx,  ff_emu_edge_hfix10_mmx, ff_emu_edge_hfix12_mmx,
     ff_emu_edge_hfix14_mmx, ff_emu_edge_hfix16_sse2, ff_emu_edge_hfix18_sse2,
@@ -133,9 +133,9 @@ static av_always_inline void emulated_edge_mc(uint8_t *dst, const uint8_t *src,
                                               x86_reg block_w, x86_reg block_h,
                                               x86_reg src_x, x86_reg src_y,
                                               x86_reg w, x86_reg h,
-                                              emu_edge_vfix_func **vfix_tbl,
+                                              emu_edge_vfix_func * const *vfix_tbl,
                                               emu_edge_vvar_func *v_extend_var,
-                                              emu_edge_hfix_func **hfix_tbl,
+                                              emu_edge_hfix_func * const *hfix_tbl,
                                               emu_edge_hvar_func *h_extend_var)
 {
     x86_reg start_y, start_x, end_y, end_x, src_y_add = 0, p;

libavfilter/af_volume.c

@@ -38,7 +38,7 @@
 #include "internal.h"
 #include "af_volume.h"
 
-static const char *precision_str[] = {
+static const char * const precision_str[] = {
     "fixed", "float", "double"
 };
 

libavfilter/vf_drawtext.c

@@ -219,7 +219,7 @@ static const AVClass drawtext_class = {
 #define FT_ERRORDEF(e, v, s) { (e), (s) },
 #define FT_ERROR_END_LIST { 0, NULL } };
 
-static struct ft_error {
+static const struct ft_error {
     int err;
     const char *err_msg;
 } ft_errors[] =

libavfilter/vf_libopencv.c

@@ -321,7 +321,7 @@ typedef struct OCVFilterEntry {
     void (*end_frame_filter)(AVFilterContext *ctx, IplImage *inimg, IplImage *outimg);
 } OCVFilterEntry;
 
-static OCVFilterEntry ocv_filter_entries[] = {
+static const OCVFilterEntry ocv_filter_entries[] = {
     { "dilate", sizeof(DilateContext), dilate_init, dilate_uninit, dilate_end_frame_filter },
     { "erode",  sizeof(DilateContext), dilate_init, dilate_uninit, erode_end_frame_filter  },
     { "smooth", sizeof(SmoothContext), smooth_init, NULL, smooth_end_frame_filter },
@@ -333,7 +333,7 @@ static av_cold int init(AVFilterContext *ctx)
     int i;
 
     for (i = 0; i < FF_ARRAY_ELEMS(ocv_filter_entries); i++) {
-        OCVFilterEntry *entry = &ocv_filter_entries[i];
+        const OCVFilterEntry *entry = &ocv_filter_entries[i];
         if (!strcmp(s->name, entry->name)) {
             s->init             = entry->init;
             s->uninit           = entry->uninit;

libavfilter/vf_overlay.c

@@ -66,7 +66,7 @@ enum EOFAction {
     EOF_ACTION_PASS
 };
 
-static const char *eof_action_str[] = {
+static const char * const eof_action_str[] = {
     "repeat", "endall", "pass"
 };
 

libavformat/hls.c

@@ -477,8 +477,8 @@ reload:
 static int save_avio_options(AVFormatContext *s)
 {
     HLSContext *c = s->priv_data;
-    static const char *opts[] = { "headers", "user_agent", NULL };
+    static const char * const opts[] = { "headers", "user_agent", NULL };
-    const char **opt = opts;
+    const char * const *opt = opts;
     uint8_t *buf;
     int ret = 0;
 

libavformat/id3v2.c

@@ -86,7 +86,7 @@ const char ff_id3v2_3_tags[][4] = {
     { 0 },
 };
 
-const char *ff_id3v2_picture_types[21] = {
+const char * const ff_id3v2_picture_types[21] = {
     "Other",
     "32x32 pixels 'file icon'",
     "Other file icon",

libavformat/id3v2.h

@@ -158,6 +158,6 @@ extern const char ff_id3v2_3_tags[][4];
 
 extern const CodecMime ff_id3v2_mime_tags[];
 
-extern const char *ff_id3v2_picture_types[21];
+extern const char * const ff_id3v2_picture_types[21];
 
 #endif /* AVFORMAT_ID3V2_H */

libavformat/mov_chan.c

@@ -344,7 +344,7 @@ static const struct MovChannelLayoutMap mov_ch_layout_map_9ch[] = {
     { 0, 0 },
 };
 
-static const struct MovChannelLayoutMap *mov_ch_layout_map[] = {
+static const struct MovChannelLayoutMap * const mov_ch_layout_map[] = {
     mov_ch_layout_map_misc,
     mov_ch_layout_map_1ch,
     mov_ch_layout_map_2ch,

libavformat/movenc.c

@@ -3529,7 +3529,7 @@ int ff_mov_write_packet(AVFormatContext *s, AVPacket *pkt)
 
     if (par->codec_id == AV_CODEC_ID_AMR_NB) {
         /* We must find out how many AMR blocks there are in one packet */
-        static uint16_t packed_size[16] =
+        static const uint16_t packed_size[16] =
             {13, 14, 16, 18, 20, 21, 27, 32, 6, 0, 0, 0, 0, 0, 0, 1};
         int len = 0;
 

libavformat/mxfdec.c

@@ -981,7 +981,7 @@ static const MXFCodecUL mxf_data_essence_container_uls[] = {
     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x09,0x0d,0x01,0x03,0x01,0x02,0x0e,0x00,0x00 }, 16, AV_CODEC_ID_NONE },
 };
 
-static const char* mxf_data_essence_descriptor[] = {
+static const char * const mxf_data_essence_descriptor[] = {
     "vbi_vanc_smpte_436M",
 };
 

libavresample/audio_mix.c

@@ -28,7 +28,7 @@
 #include "audio_data.h"
 #include "audio_mix.h"
 
-static const char *coeff_type_names[] = { "q8", "q15", "flt" };
+static const char * const coeff_type_names[] = { "q8", "q15", "flt" };
 
 struct AudioMix {
     AVAudioResampleContext *avr;

libavutil/hwcontext.c

@@ -28,7 +28,7 @@
 #include "pixdesc.h"
 #include "pixfmt.h"
 
-static const HWContextType *hw_table[] = {
+static const HWContextType * const hw_table[] = {
 #if CONFIG_CUDA
     &ff_hwcontext_type_cuda,
 #endif

libavutil/hwcontext_vaapi.c

@@ -84,7 +84,7 @@ typedef struct VAAPIMapping {
     }
 // The map fourcc <-> pix_fmt isn't bijective because of the annoying U/V
 // plane swap cases.  The frame handling below tries to hide these.
-static struct {
+static const struct {
     unsigned int fourcc;
     unsigned int rt_format;
     enum AVPixelFormat pix_fmt;

libavutil/parseutils.c

@@ -152,7 +152,7 @@ typedef struct ColorEntry {
     uint8_t     rgb_color[3];    ///< RGB values for the color
 } ColorEntry;
 
-static ColorEntry color_table[] = {
+static const ColorEntry color_table[] = {
     { "AliceBlue",            { 0xF0, 0xF8, 0xFF } },
     { "AntiqueWhite",         { 0xFA, 0xEB, 0xD7 } },
     { "Aqua",                 { 0x00, 0xFF, 0xFF } },

libavutil/pixdesc.c

@@ -1764,13 +1764,13 @@ static const AVPixFmtDescriptor av_pix_fmt_descriptors[AV_PIX_FMT_NB] = {
 FF_ENABLE_DEPRECATION_WARNINGS
 #endif
 
-static const char *color_range_names[] = {
+static const char * const color_range_names[] = {
     [AVCOL_RANGE_UNSPECIFIED] = "unknown",
     [AVCOL_RANGE_MPEG] = "tv",
     [AVCOL_RANGE_JPEG] = "pc",
 };
 
-static const char *color_primaries_names[] = {
+static const char * const color_primaries_names[] = {
     [AVCOL_PRI_RESERVED0] = "reserved",
     [AVCOL_PRI_BT709] = "bt709",
     [AVCOL_PRI_UNSPECIFIED] = "unknown",
@@ -1787,7 +1787,7 @@ static const char *color_primaries_names[] = {
     [AVCOL_PRI_JEDEC_P22] = "jedec-p22",
 };
 
-static const char *color_transfer_names[] = {
+static const char * const color_transfer_names[] = {
     [AVCOL_TRC_RESERVED0] = "reserved",
     [AVCOL_TRC_BT709] = "bt709",
     [AVCOL_TRC_UNSPECIFIED] = "unknown",
@@ -1809,7 +1809,7 @@ static const char *color_transfer_names[] = {
     [AVCOL_TRC_ARIB_STD_B67] = "arib-std-b67",
 };
 
-static const char *color_space_names[] = {
+static const char * const color_space_names[] = {
     [AVCOL_SPC_RGB] = "gbr",
     [AVCOL_SPC_BT709] = "bt709",
     [AVCOL_SPC_UNSPECIFIED] = "unknown",
@@ -1824,7 +1824,7 @@ static const char *color_space_names[] = {
     [AVCOL_SPC_SMPTE2085] = "smpte2085",
 };
 
-static const char *chroma_location_names[] = {
+static const char * const chroma_location_names[] = {
     [AVCHROMA_LOC_UNSPECIFIED] = "unspecified",
     [AVCHROMA_LOC_LEFT] = "left",
     [AVCHROMA_LOC_CENTER] = "center",

libavutil/stereo3d.c

@@ -43,7 +43,7 @@ AVStereo3D *av_stereo3d_create_side_data(AVFrame *frame)
     return (AVStereo3D *)side_data->data;
 }
 
-static const char *stereo3d_type_names[] = {
+static const char * const stereo3d_type_names[] = {
     [AV_STEREO3D_2D]                  = "2D",
     [AV_STEREO3D_SIDEBYSIDE]          = "side by side",
     [AV_STEREO3D_TOPBOTTOM]           = "top and bottom",