qdm2: Allow hard-coding VLC tables.

Also adds a lot of infrastructure necessary for it.
Some of it is a bit ugly though.
Increases binary size for hardcoded tables by about 12 kB,
which is about 15 kB from qdm2_table minus data and code
saved that was only used for creating it.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

1 files changed, 164 insertions, 0 deletions

diff --git a/libavcodec/qdm2_tablegen.h b/libavcodec/qdm2_tablegen.h
index 13ec9beb62..2331ebfbb2 100644
--- a/libavcodec/qdm2_tablegen.h
+++ b/libavcodec/qdm2_tablegen.h
@@ -26,6 +26,7 @@
 #include <stdint.h>
 #include <math.h>
 #include "libavutil/attributes.h"
+#include "qdm2data.h"
 
 #define SOFTCLIP_THRESHOLD 27600
 #define HARDCLIP_THRESHOLD 35716
@@ -34,6 +35,7 @@
 #define softclip_table_init()
 #define rnd_table_init()
 #define init_noise_samples()
+#define qdm2_init_vlc()
 #include "libavcodec/qdm2_tables.h"
 #else
 static uint16_t softclip_table[HARDCLIP_THRESHOLD - SOFTCLIP_THRESHOLD + 1];
@@ -92,6 +94,168 @@ static av_cold void init_noise_samples(void) {
         noise_samples[i] = (delta * (float)((random_seed >> 16) & 0x00007fff) - 1.0);
     }
 }
+
+static VLC vlc_tab_level;
+static VLC vlc_tab_diff;
+static VLC vlc_tab_run;
+static VLC fft_level_exp_alt_vlc;
+static VLC fft_level_exp_vlc;
+static VLC fft_stereo_exp_vlc;
+static VLC fft_stereo_phase_vlc;
+static VLC vlc_tab_tone_level_idx_hi1;
+static VLC vlc_tab_tone_level_idx_mid;
+static VLC vlc_tab_tone_level_idx_hi2;
+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 qdm2_init_vlc(void)
+{
+    vlc_tab_level.table           = &qdm2_table[qdm2_vlc_offs[0]];
+    vlc_tab_level.table_allocated = qdm2_vlc_offs[1] - qdm2_vlc_offs[0];
+    init_vlc(&vlc_tab_level, 8, 24,
+             vlc_tab_level_huffbits, 1, 1,
+             vlc_tab_level_huffcodes, 2, 2,
+             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];
+    init_vlc(&vlc_tab_diff, 8, 37,
+             vlc_tab_diff_huffbits, 1, 1,
+             vlc_tab_diff_huffcodes, 2, 2,
+             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];
+    init_vlc(&vlc_tab_run, 5, 6,
+             vlc_tab_run_huffbits, 1, 1,
+             vlc_tab_run_huffcodes, 1, 1,
+             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];
+    init_vlc(&fft_level_exp_alt_vlc, 8, 28,
+             fft_level_exp_alt_huffbits, 1, 1,
+             fft_level_exp_alt_huffcodes, 2, 2,
+             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];
+    init_vlc(&fft_level_exp_vlc, 8, 20,
+             fft_level_exp_huffbits, 1, 1,
+             fft_level_exp_huffcodes, 2, 2,
+             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];
+    init_vlc(&fft_stereo_exp_vlc, 6, 7,
+             fft_stereo_exp_huffbits, 1, 1,
+             fft_stereo_exp_huffcodes, 1, 1,
+             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];
+    init_vlc(&fft_stereo_phase_vlc, 6, 9,
+             fft_stereo_phase_huffbits, 1, 1,
+             fft_stereo_phase_huffcodes, 1, 1,
+             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];
+    init_vlc(&vlc_tab_tone_level_idx_hi1, 8, 20,
+             vlc_tab_tone_level_idx_hi1_huffbits, 1, 1,
+             vlc_tab_tone_level_idx_hi1_huffcodes, 2, 2,
+             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];
+    init_vlc(&vlc_tab_tone_level_idx_mid, 8, 24,
+             vlc_tab_tone_level_idx_mid_huffbits, 1, 1,
+             vlc_tab_tone_level_idx_mid_huffcodes, 2, 2,
+             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];
+    init_vlc(&vlc_tab_tone_level_idx_hi2, 8, 24,
+             vlc_tab_tone_level_idx_hi2_huffbits, 1, 1,
+             vlc_tab_tone_level_idx_hi2_huffcodes, 2, 2,
+             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];
+    init_vlc(&vlc_tab_type30, 6, 9,
+             vlc_tab_type30_huffbits, 1, 1,
+             vlc_tab_type30_huffcodes, 1, 1,
+             INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE);
+
+    vlc_tab_type34.table           = &qdm2_table[qdm2_vlc_offs[11]];
+    vlc_tab_type34.table_allocated = qdm2_vlc_offs[12] - qdm2_vlc_offs[11];
+    init_vlc(&vlc_tab_type34, 5, 10,
+             vlc_tab_type34_huffbits, 1, 1,
+             vlc_tab_type34_huffcodes, 1, 1,
+             INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE);
+
+    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];
+    init_vlc(&vlc_tab_fft_tone_offset[0], 8, 23,
+             vlc_tab_fft_tone_offset_0_huffbits, 1, 1,
+             vlc_tab_fft_tone_offset_0_huffcodes, 2, 2,
+             INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE);
+
+    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];
+    init_vlc(&vlc_tab_fft_tone_offset[1], 8, 28,
+             vlc_tab_fft_tone_offset_1_huffbits, 1, 1,
+             vlc_tab_fft_tone_offset_1_huffcodes, 2, 2,
+             INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE);
+
+    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];
+    init_vlc(&vlc_tab_fft_tone_offset[2], 8, 32,
+             vlc_tab_fft_tone_offset_2_huffbits, 1, 1,
+             vlc_tab_fft_tone_offset_2_huffcodes, 2, 2,
+             INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE);
+
+    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];
+    init_vlc(&vlc_tab_fft_tone_offset[3], 8, 35,
+             vlc_tab_fft_tone_offset_3_huffbits, 1, 1,
+             vlc_tab_fft_tone_offset_3_huffcodes, 2, 2,
+             INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE);
+
+    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];
+    init_vlc(&vlc_tab_fft_tone_offset[4], 8, 38,
+             vlc_tab_fft_tone_offset_4_huffbits, 1, 1,
+             vlc_tab_fft_tone_offset_4_huffcodes, 2, 2,
+             INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE);
+}
+
 #endif /* CONFIG_HARDCODED_TABLES */
 
 #endif /* AVCODEC_QDM2_TABLEGEN_H */