From 03112cdcd110a94aff4ddee8b2fddde0f7a36690 Mon Sep 17 00:00:00 2001 From: Andreas Rheinhardt Date: Tue, 3 Nov 2020 23:16:47 +0100 Subject: [PATCH] avcodec/qdm2: Avoid offsets table when initializing VLCs Signed-off-by: Andreas Rheinhardt --- libavcodec/qdm2_tablegen.h | 42 ++++++++++++++++++-------------------- 1 file changed, 20 insertions(+), 22 deletions(-) diff --git a/libavcodec/qdm2_tablegen.h b/libavcodec/qdm2_tablegen.h index 2ae8449c14..ca47fea2dc 100644 --- a/libavcodec/qdm2_tablegen.h +++ b/libavcodec/qdm2_tablegen.h @@ -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]; } }