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avcodec/vlc: Use structure instead of VLC_TYPE array as VLC element 

In C, qualifiers for arrays are broken:
const VLC_TYPE (*foo)[2] is a pointer to an array of two const VLC_TYPE
elements and unfortunately this is not compatible with a pointer
to a const array of two VLC_TYPE, because the latter does not exist
as array types are never qualified (the qualifier applies to the base
type instead). This is the reason why get_vlc2() doesn't accept
a const VLC table despite not modifying the table at all, as
there is no automatic conversion from VLC_TYPE (*)[2] to
const VLC_TYPE (*)[2].

Fix this by using a structure VLCElem for the VLC table.
This also has the advantage of making it clear which
element is which.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2022-06-13 23:02:57 +02:00
parent 97141ffeec
commit 2d764069be
43 changed files with 120 additions and 116 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
libavcodec/4xm.c
View File

@ -250,7 +250,7 @@ static void idct(int16_t block[64])
static av_cold void init_vlcs(void)
{
static VLC_TYPE table[2][4][32][2];
static VLCElem table[2][4][32];
int i, j;
for (i = 0; i < 2; i++) {

6
libavcodec/aacdec_template.c
View File

@ -1221,8 +1221,8 @@ static void aacdec_init(AACContext *ac);
static av_cold void aac_static_table_init(void)
{
static VLC_TYPE vlc_buf[304 + 270 + 550 + 300 + 328 +
294 + 306 + 268 + 510 + 366 + 462][2];
static VLCElem vlc_buf[304 + 270 + 550 + 300 + 328 +
294 + 306 + 268 + 510 + 366 + 462];
for (unsigned i = 0, offset = 0; i < 11; i++) {
vlc_spectral[i].table = &vlc_buf[offset];
vlc_spectral[i].table_allocated = FF_ARRAY_ELEMS(vlc_buf) - offset;
@ -1821,7 +1821,7 @@ static int decode_spectrum_and_dequant(AACContext *ac, INTFLOAT coef[1024],
#if !USE_FIXED
const float *vq = ff_aac_codebook_vector_vals[cbt_m1];
#endif /* !USE_FIXED */
VLC_TYPE (*vlc_tab)[2] = vlc_spectral[cbt_m1].table;
const VLCElem *vlc_tab = vlc_spectral[cbt_m1].table;
OPEN_READER(re, gb);
switch (cbt_m1 >> 1) {

2
libavcodec/aacps_common.c
View File

@ -78,7 +78,7 @@ static int read_ ## PAR ## _data(AVCodecContext *avctx, GetBitContext *gb, PSCom
int8_t (*PAR)[PS_MAX_NR_IIDICC], int table_idx, int e, int dt) \
{ \
int b, num = ps->nr_ ## PAR ## _par; \
VLC_TYPE (*vlc_table)[2] = vlc_ps[table_idx].table; \
const VLCElem *vlc_table = vlc_ps[table_idx].table; \
if (dt) { \
int e_prev = e ? e - 1 : ps->num_env_old - 1; \
e_prev = FFMAX(e_prev, 0); \

4
libavcodec/aacsbr_template.c
View File

@ -811,7 +811,7 @@ static int read_sbr_envelope(AACContext *ac, SpectralBandReplication *sbr, GetBi
{
int bits;
int i, j, k;
VLC_TYPE (*t_huff)[2], (*f_huff)[2];
const VLCElem *t_huff, *f_huff;
int t_lav, f_lav;
const int delta = (ch == 1 && sbr->bs_coupling == 1) + 1;
const int odd = sbr->n[1] & 1;
@ -899,7 +899,7 @@ static int read_sbr_noise(AACContext *ac, SpectralBandReplication *sbr, GetBitCo
SBRData *ch_data, int ch)
{
int i, j;
VLC_TYPE (*t_huff)[2], (*f_huff)[2];
const VLCElem *t_huff, *f_huff;
int t_lav, f_lav;
int delta = (ch == 1 && sbr->bs_coupling == 1) + 1;

6
libavcodec/asvdec.c
View File

@ -78,7 +78,7 @@ static inline int asv1_get_level(GetBitContext *gb)
}
// get_vlc2() is big-endian in this file
static inline int asv2_get_vlc2(GetBitContext *gb, VLC_TYPE (*table)[2], int bits)
static inline int asv2_get_vlc2(GetBitContext *gb, const VLCElem *table, int bits)
{
unsigned int index;
int code, n;
@ -87,8 +87,8 @@ static inline int asv2_get_vlc2(GetBitContext *gb, VLC_TYPE (*table)[2], int bit
UPDATE_CACHE_LE(re, gb);
index = SHOW_UBITS_LE(re, gb, bits);
code = table[index][0];
n = table[index][1];
code = table[index].sym;
n = table[index].len;
LAST_SKIP_BITS(re, gb, n);
CLOSE_READER(re, gb);

4
libavcodec/atrac3.c
View File

@ -122,7 +122,7 @@ typedef struct ATRAC3Context {
} ATRAC3Context;
static DECLARE_ALIGNED(32, float, mdct_window)[MDCT_SIZE];
static VLC_TYPE atrac3_vlc_table[7 * 1 << ATRAC3_VLC_BITS][2];
static VLCElem atrac3_vlc_table[7 * 1 << ATRAC3_VLC_BITS];
static VLC spectral_coeff_tab[7];
/**
@ -852,7 +852,7 @@ static int atrac3al_decode_frame(AVCodecContext *avctx, AVFrame *frame,
static av_cold void atrac3_init_static_data(void)
{
VLC_TYPE (*table)[2] = atrac3_vlc_table;
VLCElem *table = atrac3_vlc_table;
const uint8_t (*hufftabs)[2] = atrac3_hufftabs;
int i;

2
libavcodec/atrac3plus.c
View File

@ -31,7 +31,7 @@
#include "atrac3plus.h"
#include "atrac3plus_data.h"
static VLC_TYPE tables_data[154276][2];
static VLCElem tables_data[154276];
static VLC wl_vlc_tabs[4];
static VLC sf_vlc_tabs[8];
static VLC ct_vlc_tabs[4];

2
libavcodec/atrac9dec.c
View File

@ -844,7 +844,7 @@ static av_cold void atrac9_init_vlc(VLC *vlc, int nb_bits, int nb_codes,
const uint8_t (**tab)[2],
unsigned *buf_offset, int offset)
{
static VLC_TYPE vlc_buf[24812][2];
static VLCElem vlc_buf[24812];
vlc->table = &vlc_buf[*buf_offset];
vlc->table_allocated = FF_ARRAY_ELEMS(vlc_buf) - *buf_offset;

2
libavcodec/bink.c
View File

@ -1314,7 +1314,7 @@ static int decode_frame(AVCodecContext *avctx, AVFrame *frame,
static av_cold void bink_init_vlcs(void)
{
for (int i = 0, offset = 0; i < 16; i++) {
static VLC_TYPE table[976][2];
static VLCElem table[976];
const int maxbits = bink_tree_lens[i][15];
bink_trees[i].table = table + offset;
bink_trees[i].table_allocated = 1 << maxbits;

8
libavcodec/cfhddata.c
View File

@ -308,8 +308,8 @@ av_cold int ff_cfhd_init_vlcs(CFHDContext *s)
if (ret < 0)
return ret;
for (i = 0; i < s->vlc_9.table_size; i++) {
int code = s->vlc_9.table[i][0];
int len = s->vlc_9.table[i][1];
int code = s->vlc_9.table[i].sym;
int len = s->vlc_9.table[i].len;
int level, run;
if (len < 0) { // more bits needed
@ -351,8 +351,8 @@ av_cold int ff_cfhd_init_vlcs(CFHDContext *s)
av_assert0(s->vlc_18.table_size == 4572);
for (i = 0; i < s->vlc_18.table_size; i++) {
int code = s->vlc_18.table[i][0];
int len = s->vlc_18.table[i][1];
int code = s->vlc_18.table[i].sym;
int len = s->vlc_18.table[i].len;
int level, run;
if (len < 0) { // more bits needed

2
libavcodec/clearvideo.c
View File

@ -84,7 +84,7 @@ typedef struct CLVContext {
static VLC dc_vlc, ac_vlc;
static LevelCodes lev[4 + 3 + 3]; // 0..3: Y, 4..6: U, 7..9: V
static VLC_TYPE vlc_buf[16716][2];
static VLCElem vlc_buf[16716];
static inline int decode_block(CLVContext *ctx, int16_t *blk, int has_ac,
int ac_quant)

2
libavcodec/dcahuff.c
View File

@ -1264,7 +1264,7 @@ VLC ff_dca_vlc_rsd;
av_cold void ff_dca_init_vlcs(void)
{
static VLC_TYPE dca_table[30214][2];
static VLCElem dca_table[30214];
int i, j, k = 0;
#define DCA_INIT_VLC(vlc, a, b, c, d) \

6
libavcodec/dvdec.c
View File

@ -137,7 +137,7 @@ static RL_VLC_ELEM dv_rl_vlc[1664];
static void dv_init_static(void)
{
VLC_TYPE vlc_buf[FF_ARRAY_ELEMS(dv_rl_vlc)][2] = { 0 };
VLCElem vlc_buf[FF_ARRAY_ELEMS(dv_rl_vlc)] = { 0 };
VLC dv_vlc = { .table = vlc_buf, .table_allocated = FF_ARRAY_ELEMS(vlc_buf) };
uint16_t new_dv_vlc_bits[NB_DV_VLC * 2];
uint8_t new_dv_vlc_len[NB_DV_VLC * 2];
@ -171,8 +171,8 @@ static void dv_init_static(void)
av_assert1(dv_vlc.table_size == 1664);
for (int i = 0; i < dv_vlc.table_size; i++) {
int code = dv_vlc.table[i][0];
int len = dv_vlc.table[i][1];
int code = dv_vlc.table[i].sym;
int len = dv_vlc.table[i].len;
int level, run;
if (len < 0) { // more bits needed

4
libavcodec/faxcompr.c
View File

@ -99,8 +99,8 @@ static VLC ccitt_vlc[2], ccitt_group3_2d_vlc;
static av_cold void ccitt_unpack_init(void)
{
static VLC_TYPE code_table1[528][2];
static VLC_TYPE code_table2[648][2];
static VLCElem code_table1[528];
static VLCElem code_table2[648];
int i;
ccitt_vlc[0].table = code_table1;

24
libavcodec/get_bits.h
View File

@ -710,8 +710,8 @@ static inline const uint8_t *align_get_bits(GetBitContext *s)
unsigned int index; \
\
index = SHOW_UBITS(name, gb, bits); \
code = table[index][0]; \
n = table[index][1]; \
code = table[index].sym; \
n = table[index].len; \
\
if (max_depth > 1 && n < 0) { \
LAST_SKIP_BITS(name, gb, bits); \
@ -720,8 +720,8 @@ static inline const uint8_t *align_get_bits(GetBitContext *s)
nb_bits = -n; \
\
index = SHOW_UBITS(name, gb, nb_bits) + code; \
code = table[index][0]; \
n = table[index][1]; \
code = table[index].sym; \
n = table[index].len; \
if (max_depth > 2 && n < 0) { \
LAST_SKIP_BITS(name, gb, nb_bits); \
UPDATE_CACHE(name, gb); \
@ -729,8 +729,8 @@ static inline const uint8_t *align_get_bits(GetBitContext *s)
nb_bits = -n; \
\
index = SHOW_UBITS(name, gb, nb_bits) + code; \
code = table[index][0]; \
n = table[index][1]; \
code = table[index].sym; \
n = table[index].len; \
} \
} \
SKIP_BITS(name, gb, n); \
@ -775,15 +775,15 @@ static inline const uint8_t *align_get_bits(GetBitContext *s)
/* Return the LUT element for the given bitstream configuration. */
static inline int set_idx(GetBitContext *s, int code, int *n, int *nb_bits,
VLC_TYPE (*table)[2])
const VLCElem *table)
{
unsigned idx;
*nb_bits = -*n;
idx = show_bits(s, *nb_bits) + code;
*n = table[idx][1];
*n = table[idx].len;
return table[idx][0];
return table[idx].sym;
}
/**
@ -795,14 +795,14 @@ static inline int set_idx(GetBitContext *s, int code, int *n, int *nb_bits,
* = (max_vlc_length + bits - 1) / bits
* @returns the code parsed or -1 if no vlc matches
*/
static av_always_inline int get_vlc2(GetBitContext *s, VLC_TYPE (*table)[2],
static av_always_inline int get_vlc2(GetBitContext *s, const VLCElem *table,
int bits, int max_depth)
{
#if CACHED_BITSTREAM_READER
int nb_bits;
unsigned idx = show_bits(s, bits);
int code = table[idx][0];
int n = table[idx][1];
int code = table[idx].sym;
int n = table[idx].len;
if (max_depth > 1 && n < 0) {
skip_remaining(s, bits);

16
libavcodec/h264_cavlc.c
View File

@ -235,35 +235,35 @@ static const uint8_t run_bits[7][16]={
};
static VLC coeff_token_vlc[4];
static VLC_TYPE coeff_token_vlc_tables[520+332+280+256][2];
static VLCElem coeff_token_vlc_tables[520+332+280+256];
static const int coeff_token_vlc_tables_size[4]={520,332,280,256};
static VLC chroma_dc_coeff_token_vlc;
static VLC_TYPE chroma_dc_coeff_token_vlc_table[256][2];
static VLCElem chroma_dc_coeff_token_vlc_table[256];
static const int chroma_dc_coeff_token_vlc_table_size = 256;
static VLC chroma422_dc_coeff_token_vlc;
static VLC_TYPE chroma422_dc_coeff_token_vlc_table[8192][2];
static VLCElem chroma422_dc_coeff_token_vlc_table[8192];
static const int chroma422_dc_coeff_token_vlc_table_size = 8192;
static VLC total_zeros_vlc[15+1];
static VLC_TYPE total_zeros_vlc_tables[15][512][2];
static VLCElem total_zeros_vlc_tables[15][512];
static const int total_zeros_vlc_tables_size = 512;
static VLC chroma_dc_total_zeros_vlc[3+1];
static VLC_TYPE chroma_dc_total_zeros_vlc_tables[3][8][2];
static VLCElem chroma_dc_total_zeros_vlc_tables[3][8];
static const int chroma_dc_total_zeros_vlc_tables_size = 8;
static VLC chroma422_dc_total_zeros_vlc[7+1];
static VLC_TYPE chroma422_dc_total_zeros_vlc_tables[7][32][2];
static VLCElem chroma422_dc_total_zeros_vlc_tables[7][32];
static const int chroma422_dc_total_zeros_vlc_tables_size = 32;
static VLC run_vlc[6+1];
static VLC_TYPE run_vlc_tables[6][8][2];
static VLCElem run_vlc_tables[6][8];
static const int run_vlc_tables_size = 8;
static VLC run7_vlc;
static VLC_TYPE run7_vlc_table[96][2];
static VLCElem run7_vlc_table[96];
static const int run7_vlc_table_size = 96;
#define LEVEL_TAB_BITS 8

20
libavcodec/huffyuvdec.c
View File

@ -566,24 +566,24 @@ static av_cold int decode_init(AVCodecContext *avctx)
/** Subset of GET_VLC for use in hand-roller VLC code */
#define VLC_INTERN(dst, table, gb, name, bits, max_depth) \
code = table[index][0]; \
n = table[index][1]; \
code = table[index].sym; \
n = table[index].len; \
if (max_depth > 1 && n < 0) { \
LAST_SKIP_BITS(name, gb, bits); \
UPDATE_CACHE(name, gb); \
\
nb_bits = -n; \
index = SHOW_UBITS(name, gb, nb_bits) + code; \
code = table[index][0]; \
n = table[index][1]; \
code = table[index].sym; \
n = table[index].len; \
if (max_depth > 2 && n < 0) { \
LAST_SKIP_BITS(name, gb, nb_bits); \
UPDATE_CACHE(name, gb); \
\
nb_bits = -n; \
index = SHOW_UBITS(name, gb, nb_bits) + code; \
code = table[index][0]; \
n = table[index][1]; \
code = table[index].sym; \
n = table[index].len; \
} \
} \
dst = code; \
@ -594,7 +594,7 @@ static av_cold int decode_init(AVCodecContext *avctx)
bits, max_depth, OP) \
do { \
unsigned int index = SHOW_UBITS(name, gb, bits); \
int code, n = dtable[index][1]; \
int code, n = dtable[index].len; \
\
if (n<=0) { \
int nb_bits; \
@ -604,7 +604,7 @@ static av_cold int decode_init(AVCodecContext *avctx)
index = SHOW_UBITS(name, gb, bits); \
VLC_INTERN(dst1, table2, gb, name, bits, max_depth); \
} else { \
code = dtable[index][0]; \
code = dtable[index].sym; \
OP(dst0, dst1, code); \
LAST_SKIP_BITS(name, gb, n); \
} \
@ -752,10 +752,10 @@ static av_always_inline void decode_bgr_1(HYuvContext *s, int count,
UPDATE_CACHE(re, &s->gb);
index = SHOW_UBITS(re, &s->gb, VLC_BITS);
n = s->vlc[4].table[index][1];
n = s->vlc[4].table[index].len;
if (n>0) {
code = s->vlc[4].table[index][0];
code = s->vlc[4].table[index].sym;
*(uint32_t *) &s->temp[0][4 * i] = s->pix_bgr_map[code];
LAST_SKIP_BITS(re, &s->gb, n);
} else {

2
libavcodec/imc.c
View File

@ -118,7 +118,7 @@ static VLC huffman_vlc[4][4];
#define IMC_VLC_BITS 9
#define VLC_TABLES_SIZE 9512
static VLC_TYPE vlc_tables[VLC_TABLES_SIZE][2];
static VLCElem vlc_tables[VLC_TABLES_SIZE];
static inline double freq2bark(double freq)
{

2
libavcodec/intrax8.c
View File

@ -52,7 +52,7 @@ static VLC j_orient_vlc[2][4]; // [quant], [select]
static av_cold void x8_init_vlc(VLC *vlc, int nb_bits, int nb_codes,
int *offset, const uint8_t table[][2])
{
static VLC_TYPE vlc_buf[VLC_BUFFER_SIZE][2];
static VLCElem vlc_buf[VLC_BUFFER_SIZE];
vlc->table = &vlc_buf[*offset];
vlc->table_allocated = VLC_BUFFER_SIZE - *offset;

2
libavcodec/ivi.c
View File

@ -161,7 +161,7 @@ static int ivi_create_huff_from_desc(const IVIHuffDesc *cb, VLC *vlc, int flag)
static av_cold void ivi_init_static_vlc(void)
{
int i;
static VLC_TYPE table_data[8192 * 16][2];
static VLCElem table_data[8192 * 16];
for (i = 0; i < 8; i++) {
ivi_mb_vlc_tabs[i].table = table_data + i * 2 * 8192;

2
libavcodec/mlpdec.c
View File

@ -220,7 +220,7 @@ static VLC huff_vlc[3];
static av_cold void init_static(void)
{
for (int i = 0; i < 3; i++) {
static VLC_TYPE vlc_buf[3 * VLC_STATIC_SIZE][2];
static VLCElem vlc_buf[3 * VLC_STATIC_SIZE];
huff_vlc[i].table = &vlc_buf[i * VLC_STATIC_SIZE];
huff_vlc[i].table_allocated = VLC_STATIC_SIZE;
init_vlc(&huff_vlc[i], VLC_BITS, 18,

2
libavcodec/mobiclip.c
View File

@ -288,7 +288,7 @@ static av_cold void mobiclip_init_static(void)
syms1, sizeof(*syms1), sizeof(*syms1),
0, 0, 1 << MOBI_RL_VLC_BITS);
for (int i = 0; i < 2; i++) {
static VLC_TYPE vlc_buf[2 * 16 << MOBI_MV_VLC_BITS][2];
static VLCElem vlc_buf[2 * 16 << MOBI_MV_VLC_BITS];
for (int j = 0; j < 16; j++) {
mv_vlc[i][j].table = &vlc_buf[(16 * i + j) << MOBI_MV_VLC_BITS];
mv_vlc[i][j].table_allocated = 1 << MOBI_MV_VLC_BITS;

2
libavcodec/mpc7.c
View File

@ -44,7 +44,7 @@ static VLC scfi_vlc, dscf_vlc, hdr_vlc, quant_vlc[MPC7_QUANT_VLC_TABLES][2];
static av_cold void mpc7_init_static(void)
{
static VLC_TYPE quant_tables[7224][2];
static VLCElem quant_tables[7224];
const uint8_t *raw_quant_table = mpc7_quant_vlcs;
INIT_VLC_STATIC_FROM_LENGTHS(&scfi_vlc, MPC7_SCFI_BITS, MPC7_SCFI_SIZE,

2
libavcodec/mpc8.c
View File

@ -92,7 +92,7 @@ static av_cold void build_vlc(VLC *vlc, unsigned *buf_offset,
const uint8_t codes_counts[16],
const uint8_t **syms, int offset)
{
static VLC_TYPE vlc_buf[9296][2];
static VLCElem vlc_buf[9296];
uint8_t len[MPC8_MAX_VLC_SIZE];
unsigned num = 0;

6
libavcodec/mpeg12.c
View File

@ -66,14 +66,14 @@ static const uint8_t table_mb_btype[11][2] = {
av_cold void ff_init_2d_vlc_rl(RLTable *rl, unsigned static_size, int flags)
{
int i;
VLC_TYPE table[680][2] = {{0}};
VLCElem table[680] = { 0 };
VLC vlc = { .table = table, .table_allocated = static_size };
av_assert0(static_size <= FF_ARRAY_ELEMS(table));
init_vlc(&vlc, TEX_VLC_BITS, rl->n + 2, &rl->table_vlc[0][1], 4, 2, &rl->table_vlc[0][0], 4, 2, INIT_VLC_USE_NEW_STATIC | flags);
for (i = 0; i < vlc.table_size; i++) {
int code = vlc.table[i][0];
int len = vlc.table[i][1];
int code = vlc.table[i].sym;
int len = vlc.table[i].len;
int level, run;
if (len == 0) { // illegal code

2
libavcodec/mpeg4videodec.c
View File

@ -3588,7 +3588,7 @@ static av_cold void mpeg4_init_static(void)
0, 0, 528);
for (unsigned i = 0, offset = 0; i < 12; i++) {
static VLC_TYPE vlc_buf[6498][2];
static VLCElem vlc_buf[6498];
studio_intra_tab[i].table = &vlc_buf[offset];
studio_intra_tab[i].table_allocated = FF_ARRAY_ELEMS(vlc_buf) - offset;

6
libavcodec/mpegaudiodec_common.c
View File

@ -65,10 +65,10 @@ const uint8_t ff_lsf_nsf_table[6][3][4] = {
/* mpegaudio layer 3 huffman tables */
VLC ff_huff_vlc[16];
static VLC_TYPE huff_vlc_tables[128 + 128 + 128 + 130 + 128 + 154 + 166 + 142 +
204 + 190 + 170 + 542 + 460 + 662 + 414][2];
static VLCElem huff_vlc_tables[128 + 128 + 128 + 130 + 128 + 154 + 166 + 142 +
204 + 190 + 170 + 542 + 460 + 662 + 414];
VLC ff_huff_quad_vlc[2];
static VLC_TYPE huff_quad_vlc_tables[64 + 16][2];
static VLCElem huff_quad_vlc_tables[64 + 16];
static const uint8_t mpa_hufflens[] = {
/* Huffman table 1 - 4 entries */

2
libavcodec/msmpeg4dec.c
View File

@ -348,7 +348,7 @@ static av_cold void msmpeg4_decode_init_static(void)
&ff_v2_mb_type[0][0], 2, 1, 128);
for (unsigned i = 0, offset = 0; i < 4; i++) {
static VLC_TYPE vlc_buf[1636 + 2648 + 1532 + 2488][2];
static VLCElem vlc_buf[1636 + 2648 + 1532 + 2488];
ff_mb_non_intra_vlc[i].table = &vlc_buf[offset];
ff_mb_non_intra_vlc[i].table_allocated = FF_ARRAY_ELEMS(vlc_buf) - offset;
init_vlc(&ff_mb_non_intra_vlc[i], MB_NON_INTRA_VLC_BITS, 128,

2
libavcodec/mss4.c
View File

@ -100,7 +100,7 @@ static VLC vec_entry_vlc[2];
static av_cold void mss4_init_vlc(VLC *vlc, unsigned *offset,
const uint8_t *lens, const uint8_t *syms)
{
static VLC_TYPE vlc_buf[2146][2];
static VLCElem vlc_buf[2146];
uint8_t bits[MAX_ENTRIES];
int i, j;
int idx = 0;

2
libavcodec/qdm2_tablegen.c
View File

@ -42,7 +42,7 @@ int main(void)
qdm2_init_vlc();
WRITE_2D_ARRAY("static const", VLC_TYPE, qdm2_table);
WRITE_VLC_TABLE("static const", qdm2_table);
WRITE_VLC_TYPE("static const", vlc_tab_level, qdm2_table);
WRITE_VLC_TYPE("static const", vlc_tab_diff, qdm2_table);
WRITE_VLC_TYPE("static const", vlc_tab_run, qdm2_table);

2
libavcodec/qdm2_tablegen.h
View File

@ -109,7 +109,7 @@ static VLC vlc_tab_type30;
static VLC vlc_tab_type34;
static VLC vlc_tab_fft_tone_offset[5];
static VLC_TYPE qdm2_table[3838][2];
static VLCElem qdm2_table[3838];
static av_cold void build_vlc(VLC *vlc, int nb_bits, int nb_codes,
unsigned *offset, const uint8_t tab[][2])

2
libavcodec/qdmc.c
View File

@ -169,7 +169,7 @@ static av_cold void qdmc_init_static_data(void)
int i;
for (unsigned i = 0, offset = 0; i < FF_ARRAY_ELEMS(vtable); i++) {
static VLC_TYPE vlc_buffer[13698][2];
static VLCElem vlc_buffer[13698];
vtable[i].table = &vlc_buffer[offset];
vtable[i].table_allocated = FF_ARRAY_ELEMS(vlc_buffer) - offset;
ff_init_vlc_from_lengths(&vtable[i], huff_bits[i], huff_sizes[i],

6
libavcodec/rl.c
View File

@ -62,7 +62,7 @@ av_cold void ff_rl_init(RLTable *rl,
av_cold void ff_rl_init_vlc(RLTable *rl, unsigned static_size)
{
int i, q;
VLC_TYPE table[1500][2] = {{0}};
VLCElem table[1500] = { 0 };
VLC vlc = { .table = table, .table_allocated = static_size };
av_assert0(static_size <= FF_ARRAY_ELEMS(table));
init_vlc(&vlc, 9, rl->n + 1, &rl->table_vlc[0][1], 4, 2, &rl->table_vlc[0][0], 4, 2, INIT_VLC_USE_NEW_STATIC);
@ -79,8 +79,8 @@ av_cold void ff_rl_init_vlc(RLTable *rl, unsigned static_size)
qadd = 0;
}
for (i = 0; i < vlc.table_size; i++) {
int code = vlc.table[i][0];
int len = vlc.table[i][1];
int code = vlc.table[i].sym;
int len = vlc.table[i].len;
int level, run;
if (len == 0) { // illegal code

10
libavcodec/rv10.c
View File

@ -340,7 +340,7 @@ static av_cold void rv10_build_vlc(VLC *vlc, const uint16_t len_count[15],
static av_cold void rv10_init_static(void)
{
static VLC_TYPE table[1472 + 992][2];
static VLCElem table[1472 + 992];
rv_dc_lum.table = table;
rv_dc_lum.table_allocated = 1472;
@ -349,8 +349,8 @@ static av_cold void rv10_init_static(void)
for (int i = 0; i < 1 << (DC_VLC_BITS - 7 /* Length of skip prefix */); i++) {
/* All codes beginning with 0x7F have the same length and value.
* Modifying the table directly saves us the useless subtables. */
rv_dc_lum.table[(0x7F << (DC_VLC_BITS - 7)) + i][0] = 255;
rv_dc_lum.table[(0x7F << (DC_VLC_BITS - 7)) + i][1] = 18;
rv_dc_lum.table[(0x7F << (DC_VLC_BITS - 7)) + i].sym = 255;
rv_dc_lum.table[(0x7F << (DC_VLC_BITS - 7)) + i].len = 18;
}
rv_dc_chrom.table = &table[1472];
rv_dc_chrom.table_allocated = 992;
@ -358,8 +358,8 @@ static av_cold void rv10_init_static(void)
rv_sym_run_len, FF_ARRAY_ELEMS(rv_sym_run_len) - 2);
for (int i = 0; i < 1 << (DC_VLC_BITS - 9 /* Length of skip prefix */); i++) {
/* Same as above. */
rv_dc_chrom.table[(0x1FE << (DC_VLC_BITS - 9)) + i][0] = 255;
rv_dc_chrom.table[(0x1FE << (DC_VLC_BITS - 9)) + i][1] = 18;
rv_dc_chrom.table[(0x1FE << (DC_VLC_BITS - 9)) + i].sym = 255;
rv_dc_chrom.table[(0x1FE << (DC_VLC_BITS - 9)) + i].len = 18;
}
ff_h263_decode_init_vlc();
}

2
libavcodec/rv34.c
View File

@ -81,7 +81,7 @@ static int rv34_decode_mv(RV34DecContext *r, int block_type);
* @{
*/
static VLC_TYPE table_data[117592][2];
static VLCElem table_data[117592];
/**
* Generate VLC from codeword lengths.

4
libavcodec/rv40.c
View File

@ -47,7 +47,7 @@ static VLC ptype_vlc[NUM_PTYPE_VLCS], btype_vlc[NUM_BTYPE_VLCS];
static av_cold void rv40_init_table(VLC *vlc, unsigned *offset, int nb_bits,
int nb_codes, const uint8_t (*tab)[2])
{
static VLC_TYPE vlc_buf[11776][2];
static VLCElem vlc_buf[11776];
vlc->table = &vlc_buf[*offset];
vlc->table_allocated = 1 << nb_bits;
@ -64,7 +64,7 @@ static av_cold void rv40_init_table(VLC *vlc, unsigned *offset, int nb_bits,
static av_cold void rv40_init_tables(void)
{
int i, offset = 0;
static VLC_TYPE aic_mode2_table[11814][2];
static VLCElem aic_mode2_table[11814];
rv40_init_table(&aic_top_vlc, &offset, AIC_TOP_BITS, AIC_TOP_SIZE,
rv40_aic_top_vlc_tab);

2
libavcodec/svq1dec.c
View File

@ -777,7 +777,7 @@ static av_cold void svq1_static_init(void)
for (int i = 0, offset = 0; i < 6; i++) {
static const uint8_t sizes[2][6] = { { 14, 10, 14, 18, 16, 18 },
{ 10, 10, 14, 14, 14, 16 } };
static VLC_TYPE table[168][2];
static VLCElem table[168];
svq1_intra_multistage[i].table = &table[offset];
svq1_intra_multistage[i].table_allocated = sizes[0][i];
offset += sizes[0][i];

17
libavcodec/tableprint_vlc.h
View File

@ -39,23 +39,22 @@
#include "libavutil/reverse.c"
#include "vlc.c"
#define REPLACE_DEFINE2(type) write_##type##_array
#define REPLACE_DEFINE(type) REPLACE_DEFINE2(type)
static void write_VLC_TYPE_array(const VLC_TYPE *p, int s) {
REPLACE_DEFINE(VLC_TYPE)(p, s);
}
// The following will have to be modified if VLCBaseType changes.
WRITE_1D_FUNC_ARGV(VLCElem, 3, "{ .sym =%5" PRId16 ", .len =%2"PRIi16 " }",
data[i].sym, data[i].len)
WRITE_2D_FUNC(VLC_TYPE)
static void write_vlc_type(const VLC *vlc, VLC_TYPE (*base_table)[2], const char *base_table_name)
static void write_vlc_type(const VLC *vlc, const VLCElem *base_table, const char *base_table_name)
{
printf(" .bits = %i,\n", vlc->bits);
// Unfortunately need to cast away const currently
printf(" .table = (VLC_TYPE (*)[2])(%s + 0x%x),\n", base_table_name, (int)(vlc->table - base_table));
printf(" .table = (VLCElem *)(%s + 0x%x),\n", base_table_name, (int)(vlc->table - base_table));
printf(" .table_size = 0x%x,\n", vlc->table_size);
printf(" .table_allocated = 0x%x,\n", vlc->table_allocated);
}
#define WRITE_VLC_TABLE(prefix, name) \
WRITE_ARRAY(prefix, VLCElem, name)
#define WRITE_VLC_TYPE(prefix, name, base_table) \
do { \
printf(prefix" VLC "#name" = {\n"); \

2
libavcodec/tscc2.c
View File

@ -57,7 +57,7 @@ static av_cold void tscc2_init_vlc(VLC *vlc, int *offset, int nb_codes,
const uint8_t *lens, const void *syms,
int sym_length)
{
static VLC_TYPE vlc_buf[15442][2];
static VLCElem vlc_buf[15442];
vlc->table = &vlc_buf[*offset];
vlc->table_allocated = FF_ARRAY_ELEMS(vlc_buf) - *offset;

2
libavcodec/vc1.c
View File

@ -1584,7 +1584,7 @@ static const uint16_t vlc_offs[] = {
static av_cold void vc1_init_static(void)
{
static VLC_TYPE vlc_table[32372][2];
static VLCElem vlc_table[32372];
INIT_VLC_STATIC(&ff_vc1_bfraction_vlc, VC1_BFRACTION_VLC_BITS, 23,
ff_vc1_bfraction_bits, 1, 1,

26
libavcodec/vlc.c
View File

@ -65,13 +65,13 @@ static int alloc_table(VLC *vlc, int size, int use_static)
if (use_static)
abort(); // cannot do anything, init_vlc() is used with too little memory
vlc->table_allocated += (1 << vlc->bits);
vlc->table = av_realloc_f(vlc->table, vlc->table_allocated, sizeof(VLC_TYPE) * 2);
vlc->table = av_realloc_f(vlc->table, vlc->table_allocated, sizeof(*vlc->table));
if (!vlc->table) {
vlc->table_allocated = 0;
vlc->table_size = 0;
return AVERROR(ENOMEM);
}
memset(vlc->table + vlc->table_allocated - (1 << vlc->bits), 0, sizeof(VLC_TYPE) * 2 << vlc->bits);
memset(vlc->table + vlc->table_allocated - (1 << vlc->bits), 0, sizeof(*vlc->table) << vlc->bits);
}
return index;
}
@ -88,7 +88,7 @@ static av_always_inline uint32_t bitswap_32(uint32_t x)
typedef struct VLCcode {
uint8_t bits;
VLC_TYPE symbol;
VLCBaseType symbol;
/** codeword, with the first bit-to-be-read in the msb
* (even if intended for a little-endian bitstream reader) */
uint32_t code;
@ -138,7 +138,7 @@ static int build_table(VLC *vlc, int table_nb_bits, int nb_codes,
VLCcode *codes, int flags)
{
int table_size, table_index;
VLC_TYPE (*table)[2];
VLCElem *table;
if (table_nb_bits > 30)
return AVERROR(EINVAL);
@ -166,15 +166,15 @@ static int build_table(VLC *vlc, int table_nb_bits, int nb_codes,
inc = 1 << n;
}
for (int k = 0; k < nb; k++) {
int bits = table[j][1];
int oldsym = table[j][0];
int bits = table[j].len;
int oldsym = table[j].sym;
ff_dlog(NULL, "%4x: code=%d n=%d\n", j, i, n);
if ((bits || oldsym) && (bits != n || oldsym != symbol)) {
av_log(NULL, AV_LOG_ERROR, "incorrect codes\n");
return AVERROR_INVALIDDATA;
}
table[j][1] = n; //bits
table[j][0] = symbol;
table[j].len = n;
table[j].sym = symbol;
j += inc;
}
} else {
@ -200,7 +200,7 @@ static int build_table(VLC *vlc, int table_nb_bits, int nb_codes,
}
subtable_bits = FFMIN(subtable_bits, table_nb_bits);
j = (flags & INIT_VLC_OUTPUT_LE) ? bitswap_32(code_prefix) >> (32 - table_nb_bits) : code_prefix;
table[j][1] = -subtable_bits;
table[j].len = -subtable_bits;
ff_dlog(NULL, "%4x: n=%d (subtable)\n",
j, codes[i].bits + table_nb_bits);
index = build_table(vlc, subtable_bits, k-i, codes+i, flags);
@ -208,8 +208,8 @@ static int build_table(VLC *vlc, int table_nb_bits, int nb_codes,
return index;
/* note: realloc has been done, so reload tables */
table = &vlc->table[table_index];
table[j][0] = index; //code
if (table[j][0] != index) {
table[j].sym = index;
if (table[j].sym != index) {
avpriv_request_sample(NULL, "strange codes");
return AVERROR_PATCHWELCOME;
}
@ -218,8 +218,8 @@ static int build_table(VLC *vlc, int table_nb_bits, int nb_codes,
}
for (int i = 0; i < table_size; i++) {
if (table[i][1] == 0) //bits
table[i][0] = -1; //codes
if (table[i].len == 0)
table[i].sym = -1;
}
return table_index;

13
libavcodec/vlc.h
View File

@ -21,11 +21,16 @@
#include <stdint.h>
#define VLC_TYPE int16_t
// When changing this, be sure to also update tableprint_vlc.h accordingly.
typedef int16_t VLCBaseType;
typedef struct VLCElem {
VLCBaseType sym, len;
} VLCElem;
typedef struct VLC {
int bits;
VLC_TYPE (*table)[2]; ///< code, bits
VLCElem *table;
int table_size, table_allocated;
} VLC;
@ -98,7 +103,7 @@ void ff_free_vlc(VLC *vlc);
#define INIT_CUSTOM_VLC_SPARSE_STATIC(vlc, bits, a, b, c, d, e, f, g, \
h, i, j, flags, static_size) \
do { \
static VLC_TYPE table[static_size][2]; \
static VLCElem table[static_size]; \
(vlc)->table = table; \
(vlc)->table_allocated = static_size; \
ff_init_vlc_sparse(vlc, bits, a, b, c, d, e, f, g, h, i, j, \
@ -127,7 +132,7 @@ void ff_free_vlc(VLC *vlc);
symbols, symbols_wrap, symbols_size, \
offset, flags, static_size) \
do { \
static VLC_TYPE table[static_size][2]; \
static VLCElem table[static_size]; \
(vlc)->table = table; \
(vlc)->table_allocated = static_size; \
ff_init_vlc_from_lengths(vlc, bits, nb_codes, lens, len_wrap, \

2
libavcodec/vp3.c
View File

@ -1197,7 +1197,7 @@ static int unpack_vlcs(Vp3DecodeContext *s, GetBitContext *gb,
/* local references to structure members to avoid repeated dereferences */
int *coded_fragment_list = s->coded_fragment_list[plane];
Vp3Fragment *all_fragments = s->all_fragments;
VLC_TYPE(*vlc_table)[2] = table->table;
const VLCElem *vlc_table = table->table;
if (num_coeffs < 0) {
av_log(s->avctx, AV_LOG_ERROR,