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Code Issues Releases Activity

avcodec/qdm2: Avoid offsets table when initializing VLCs

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Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
This commit is contained in:
Andreas Rheinhardt 2020-11-03 23:16:47 +01:00
parent bcdf67c7fa
commit 03112cdcd1
1 changed files with 20 additions and 22 deletions
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42
libavcodec/qdm2_tablegen.h
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@ -109,46 +109,44 @@ static VLC vlc_tab_type30;
static VLC vlc_tab_type34;
static VLC vlc_tab_fft_tone_offset[5];
static const uint16_t qdm2_vlc_offs[] = {
0,260,566,598,894,1166,1230,1294,1678,1950,2214,2278,2310,2570,2834,3124,3448,3838,
};
static VLC_TYPE qdm2_table[3838][2];
static av_cold void build_vlc(VLC *vlc, int nb_bits, int nb_codes, int idx,
const uint8_t tab[][2])
static av_cold void build_vlc(VLC *vlc, int nb_bits, int nb_codes,
unsigned *offset, const uint8_t tab[][2])
{
vlc->table = &qdm2_table[qdm2_vlc_offs[idx]];
vlc->table_allocated = qdm2_vlc_offs[idx + 1] - qdm2_vlc_offs[idx];
vlc->table = &qdm2_table[*offset];
vlc->table_allocated = FF_ARRAY_ELEMS(qdm2_table) - *offset;
ff_init_vlc_from_lengths(vlc, nb_bits, nb_codes,
&tab[0][1], 2, &tab[0][0], 2, 1,
-1, INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE, NULL);
-1, INIT_VLC_STATIC_OVERLONG | INIT_VLC_LE, NULL);
*offset += vlc->table_size;
}
static av_cold void qdm2_init_vlc(void)
{
const uint8_t (*tab)[2] = tab_fft_tone_offset;
unsigned offset = 0;
build_vlc(&vlc_tab_level, 8, 24, 0, tab_level);
build_vlc(&vlc_tab_diff, 8, 33, 1, tab_diff);
build_vlc(&vlc_tab_run, 5, 6, 2, tab_run);
build_vlc(&vlc_tab_level, 8, 24, &offset, tab_level);
build_vlc(&vlc_tab_diff, 8, 33, &offset, tab_diff);
build_vlc(&vlc_tab_run, 5, 6, &offset, tab_run);
build_vlc(&fft_level_exp_alt_vlc, 8, 28, 3, fft_level_exp_alt);
build_vlc(&fft_level_exp_vlc, 8, 20, 4, fft_level_exp);
build_vlc(&fft_level_exp_alt_vlc, 8, 28, &offset, fft_level_exp_alt);
build_vlc(&fft_level_exp_vlc, 8, 20, &offset, fft_level_exp);
build_vlc(&fft_stereo_exp_vlc, 6, 7, 5, fft_stereo_exp);
build_vlc(&fft_stereo_phase_vlc, 6, 9, 6, fft_stereo_phase);
build_vlc(&fft_stereo_exp_vlc, 6, 7, &offset, fft_stereo_exp);
build_vlc(&fft_stereo_phase_vlc, 6, 9, &offset, fft_stereo_phase);
build_vlc(&vlc_tab_tone_level_idx_hi1, 8, 20, 7, tab_tone_level_idx_hi1);
build_vlc(&vlc_tab_tone_level_idx_mid, 8, 13, 8, tab_tone_level_idx_mid);
build_vlc(&vlc_tab_tone_level_idx_hi2, 8, 18, 9, tab_tone_level_idx_hi2);
build_vlc(&vlc_tab_tone_level_idx_hi1, 8, 20, &offset, tab_tone_level_idx_hi1);
build_vlc(&vlc_tab_tone_level_idx_mid, 8, 13, &offset, tab_tone_level_idx_mid);
build_vlc(&vlc_tab_tone_level_idx_hi2, 8, 18, &offset, tab_tone_level_idx_hi2);
build_vlc(&vlc_tab_type30, 6, 9, 10, tab_type30);
build_vlc(&vlc_tab_type34, 5, 10, 11, tab_type34);
build_vlc(&vlc_tab_type30, 6, 9, &offset, tab_type30);
build_vlc(&vlc_tab_type34, 5, 10, &offset, tab_type34);
for (int i = 0; i < 5; i++) {
build_vlc(&vlc_tab_fft_tone_offset[i], 8, tab_fft_tone_offset_sizes[i],
12 + i, tab);
&offset, tab);
tab += tab_fft_tone_offset_sizes[i];
}
}