[FFmpeg-devel] [PATCH 050/114] avcodec/qdm2_tablegen: Avoid code duplication when creating VLCs
Andreas Rheinhardt
andreas.rheinhardt at gmail.com
Tue Nov 10 12:47:47 EET 2020
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at gmail.com>
---
libavcodec/qdm2_tablegen.h | 159 +++++++------------------------------
1 file changed, 27 insertions(+), 132 deletions(-)
diff --git a/libavcodec/qdm2_tablegen.h b/libavcodec/qdm2_tablegen.h
index 309bb4b53c..0e57902fc9 100644
--- a/libavcodec/qdm2_tablegen.h
+++ b/libavcodec/qdm2_tablegen.h
@@ -115,145 +115,40 @@ static const uint16_t qdm2_vlc_offs[] = {
static VLC_TYPE qdm2_table[3838][2];
-static av_cold void qdm2_init_vlc(void)
+static av_cold void build_vlc(VLC *vlc, int nb_bits, int nb_codes, int idx,
+ const uint8_t tab[][2])
{
- vlc_tab_level.table = &qdm2_table[qdm2_vlc_offs[0]];
- vlc_tab_level.table_allocated = qdm2_vlc_offs[1] - qdm2_vlc_offs[0];
- ff_init_vlc_from_lengths(&vlc_tab_level, 8, 24,
- &tab_level[0][1], 2,
- &tab_level[0][0], 2, 1, 0,
- INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE);
-
- vlc_tab_diff.table = &qdm2_table[qdm2_vlc_offs[1]];
- vlc_tab_diff.table_allocated = qdm2_vlc_offs[2] - qdm2_vlc_offs[1];
- ff_init_vlc_from_lengths(&vlc_tab_diff, 8, 33,
- &tab_diff[0][1], 2,
- &tab_diff[0][0], 2, 1, 0,
- INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE);
-
- vlc_tab_run.table = &qdm2_table[qdm2_vlc_offs[2]];
- vlc_tab_run.table_allocated = qdm2_vlc_offs[3] - qdm2_vlc_offs[2];
- ff_init_vlc_from_lengths(&vlc_tab_run, 5, 6,
- &tab_run[0][1], 2,
- &tab_run[0][0], 2, 1, 0,
- INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE);
-
- fft_level_exp_alt_vlc.table = &qdm2_table[qdm2_vlc_offs[3]];
- fft_level_exp_alt_vlc.table_allocated = qdm2_vlc_offs[4] -
- qdm2_vlc_offs[3];
- ff_init_vlc_from_lengths(&fft_level_exp_alt_vlc, 8, 28,
- &fft_level_exp_alt[0][1], 2,
- &fft_level_exp_alt[0][0], 2, 1, 0,
- INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE);
-
- fft_level_exp_vlc.table = &qdm2_table[qdm2_vlc_offs[4]];
- fft_level_exp_vlc.table_allocated = qdm2_vlc_offs[5] - qdm2_vlc_offs[4];
- ff_init_vlc_from_lengths(&fft_level_exp_vlc, 8, 20,
- &fft_level_exp[0][1], 2,
- &fft_level_exp[0][0], 2, 1, 0,
- INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE);
-
- fft_stereo_exp_vlc.table = &qdm2_table[qdm2_vlc_offs[5]];
- fft_stereo_exp_vlc.table_allocated = qdm2_vlc_offs[6] -
- qdm2_vlc_offs[5];
- ff_init_vlc_from_lengths(&fft_stereo_exp_vlc, 6, 7,
- &fft_stereo_exp[0][1], 2,
- &fft_stereo_exp[0][0], 2, 1, 0,
- INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE);
-
- fft_stereo_phase_vlc.table = &qdm2_table[qdm2_vlc_offs[6]];
- fft_stereo_phase_vlc.table_allocated = qdm2_vlc_offs[7] -
- qdm2_vlc_offs[6];
- ff_init_vlc_from_lengths(&fft_stereo_phase_vlc, 6, 9,
- &fft_stereo_phase[0][1], 2,
- &fft_stereo_phase[0][0], 2, 1, 0,
- INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE);
-
- vlc_tab_tone_level_idx_hi1.table =
- &qdm2_table[qdm2_vlc_offs[7]];
- vlc_tab_tone_level_idx_hi1.table_allocated = qdm2_vlc_offs[8] -
- qdm2_vlc_offs[7];
- ff_init_vlc_from_lengths(&vlc_tab_tone_level_idx_hi1, 8, 20,
- &tab_tone_level_idx_hi1[0][1], 2,
- &tab_tone_level_idx_hi1[0][0], 2, 1, 0,
- INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE);
-
- vlc_tab_tone_level_idx_mid.table =
- &qdm2_table[qdm2_vlc_offs[8]];
- vlc_tab_tone_level_idx_mid.table_allocated = qdm2_vlc_offs[9] -
- qdm2_vlc_offs[8];
- ff_init_vlc_from_lengths(&vlc_tab_tone_level_idx_mid, 8, 13,
- &tab_tone_level_idx_mid[0][1], 2,
- &tab_tone_level_idx_mid[0][0], 2, 1, 0,
- INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE);
-
- vlc_tab_tone_level_idx_hi2.table =
- &qdm2_table[qdm2_vlc_offs[9]];
- vlc_tab_tone_level_idx_hi2.table_allocated = qdm2_vlc_offs[10] -
- qdm2_vlc_offs[9];
- ff_init_vlc_from_lengths(&vlc_tab_tone_level_idx_hi2, 8, 18,
- &tab_tone_level_idx_hi2[0][1], 2,
- &tab_tone_level_idx_hi2[0][0], 2, 1, 0,
- INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE);
-
- vlc_tab_type30.table = &qdm2_table[qdm2_vlc_offs[10]];
- vlc_tab_type30.table_allocated = qdm2_vlc_offs[11] - qdm2_vlc_offs[10];
- ff_init_vlc_from_lengths(&vlc_tab_type30, 6, 9,
- &tab_type30[0][1], 2,
- &tab_type30[0][0], 2, 1, 0,
- INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE);
+ vlc->table = &qdm2_table[qdm2_vlc_offs[idx]];
+ vlc->table_allocated = qdm2_vlc_offs[idx + 1] - qdm2_vlc_offs[idx];
+ ff_init_vlc_from_lengths(vlc, nb_bits, nb_codes,
+ &tab[0][1], 2, &tab[0][0], 2, 1,
+ 0, INIT_VLC_USE_NEW_STATIC | INIT_VLC_OUTPUT_LE);
+}
- vlc_tab_type34.table = &qdm2_table[qdm2_vlc_offs[11]];
- vlc_tab_type34.table_allocated = qdm2_vlc_offs[12] - qdm2_vlc_offs[11];
- ff_init_vlc_from_lengths(&vlc_tab_type34, 5, 10,
- &tab_type34[0][1], 2,
- &tab_type34[0][0], 2, 1, 0,
- INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE);
+static av_cold void qdm2_init_vlc(void)
+{
+ 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);
- vlc_tab_fft_tone_offset[0].table =
- &qdm2_table[qdm2_vlc_offs[12]];
- vlc_tab_fft_tone_offset[0].table_allocated = qdm2_vlc_offs[13] -
- qdm2_vlc_offs[12];
- ff_init_vlc_from_lengths(&vlc_tab_fft_tone_offset[0], 8, 23,
- &tab_fft_tone_offset_0[0][1], 2,
- &tab_fft_tone_offset_0[0][0], 2, 1, 0,
- INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE);
+ 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);
- vlc_tab_fft_tone_offset[1].table =
- &qdm2_table[qdm2_vlc_offs[13]];
- vlc_tab_fft_tone_offset[1].table_allocated = qdm2_vlc_offs[14] -
- qdm2_vlc_offs[13];
- ff_init_vlc_from_lengths(&vlc_tab_fft_tone_offset[1], 8, 28,
- &tab_fft_tone_offset_1[0][1], 2,
- &tab_fft_tone_offset_1[0][0], 2, 1, 0,
- INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE);
+ build_vlc(&fft_stereo_exp_vlc, 6, 7, 5, fft_stereo_exp);
+ build_vlc(&fft_stereo_phase_vlc, 6, 9, 6, fft_stereo_phase);
- vlc_tab_fft_tone_offset[2].table =
- &qdm2_table[qdm2_vlc_offs[14]];
- vlc_tab_fft_tone_offset[2].table_allocated = qdm2_vlc_offs[15] -
- qdm2_vlc_offs[14];
- ff_init_vlc_from_lengths(&vlc_tab_fft_tone_offset[2], 8, 31,
- &tab_fft_tone_offset_2[0][1], 2,
- &tab_fft_tone_offset_2[0][0], 2, 1, 0,
- INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE);
+ 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);
- vlc_tab_fft_tone_offset[3].table =
- &qdm2_table[qdm2_vlc_offs[15]];
- vlc_tab_fft_tone_offset[3].table_allocated = qdm2_vlc_offs[16] -
- qdm2_vlc_offs[15];
- ff_init_vlc_from_lengths(&vlc_tab_fft_tone_offset[3], 8, 34,
- &tab_fft_tone_offset_3[0][1], 2,
- &tab_fft_tone_offset_3[0][0], 2, 1, 0,
- INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE);
+ build_vlc(&vlc_tab_type30, 6, 9, 10, tab_type30);
+ build_vlc(&vlc_tab_type34, 5, 10, 11, tab_type34);
- vlc_tab_fft_tone_offset[4].table =
- &qdm2_table[qdm2_vlc_offs[16]];
- vlc_tab_fft_tone_offset[4].table_allocated = qdm2_vlc_offs[17] -
- qdm2_vlc_offs[16];
- ff_init_vlc_from_lengths(&vlc_tab_fft_tone_offset[4], 8, 37,
- &tab_fft_tone_offset_4[0][1], 2,
- &tab_fft_tone_offset_4[0][0], 2, 1, 0,
- INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE);
+ build_vlc(&vlc_tab_fft_tone_offset[0], 8, 23, 12, tab_fft_tone_offset_0);
+ build_vlc(&vlc_tab_fft_tone_offset[1], 8, 28, 13, tab_fft_tone_offset_1);
+ build_vlc(&vlc_tab_fft_tone_offset[2], 8, 31, 14, tab_fft_tone_offset_2);
+ build_vlc(&vlc_tab_fft_tone_offset[3], 8, 34, 15, tab_fft_tone_offset_3);
+ build_vlc(&vlc_tab_fft_tone_offset[4], 8, 37, 16, tab_fft_tone_offset_4);
}
#endif /* CONFIG_HARDCODED_TABLES */
--
2.25.1
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