diff options
author | Andreas Rheinhardt <andreas.rheinhardt@gmail.com> | 2020-10-29 23:34:18 +0100 |
---|---|---|
committer | Andreas Rheinhardt <andreas.rheinhardt@gmail.com> | 2020-12-08 17:51:45 +0100 |
commit | 906911f599ea4e24df5f3cd92e6292339261154a (patch) | |
tree | 0dc97c45758ef808b8ee8fb6ca381e2c7299a21e /libavcodec/mpc8.c | |
parent | dc7b3c79c33095e54085c30abe8dea34ab6f001f (diff) |
avcodec/mpc8: Reduce size of tables used to initialize VLCs
By switching to ff_init_vlc_from_lengths() one can make a table of
codes of type uint8_t superfluous, saving space.
Other VLCs (those without dedicated symbols table and with codes of
type uint8_t) have been made to use ff_init_vlc_from_lengths(), too,
because it reduces codesize (ff_init_vlc_from_lengths() has two
parameters less than ff_init_vlc_sparse()) and because it allows to
use the offset parameter in future commits.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Diffstat (limited to 'libavcodec/mpc8.c')
-rw-r--r-- | libavcodec/mpc8.c | 133 |
1 files changed, 55 insertions, 78 deletions
diff --git a/libavcodec/mpc8.c b/libavcodec/mpc8.c index b05942bca7..fdf0559bd1 100644 --- a/libavcodec/mpc8.c +++ b/libavcodec/mpc8.c @@ -101,15 +101,6 @@ static av_cold int mpc8_decode_init(AVCodecContext * avctx) static int vlc_initialized = 0; int channels; - static VLC_TYPE band_table[542][2]; - static VLC_TYPE q1_table[520][2]; - static VLC_TYPE q9up_table[524][2]; - static VLC_TYPE scfi0_table[1 << MPC8_SCFI0_BITS][2]; - static VLC_TYPE scfi1_table[1 << MPC8_SCFI1_BITS][2]; - static VLC_TYPE dscf0_table[560][2]; - static VLC_TYPE dscf1_table[598][2]; - static VLC_TYPE q3_0_table[512][2]; - static VLC_TYPE q3_1_table[516][2]; static VLC_TYPE codes_table[5708][2]; if(avctx->extradata_size < 2){ @@ -143,91 +134,77 @@ static av_cold int mpc8_decode_init(AVCodecContext * avctx) if(vlc_initialized) return 0; av_log(avctx, AV_LOG_DEBUG, "Initing VLC\n"); - band_vlc.table = band_table; - band_vlc.table_allocated = 542; - init_vlc(&band_vlc, MPC8_BANDS_BITS, MPC8_BANDS_SIZE, - mpc8_bands_bits, 1, 1, - mpc8_bands_codes, 1, 1, INIT_VLC_USE_NEW_STATIC); - - q1_vlc.table = q1_table; - q1_vlc.table_allocated = 520; - init_vlc(&q1_vlc, MPC8_Q1_BITS, MPC8_Q1_SIZE, - mpc8_q1_bits, 1, 1, - mpc8_q1_codes, 1, 1, INIT_VLC_USE_NEW_STATIC); - q9up_vlc.table = q9up_table; - q9up_vlc.table_allocated = 524; - init_vlc(&q9up_vlc, MPC8_Q9UP_BITS, MPC8_Q9UP_SIZE, - mpc8_q9up_bits, 1, 1, - mpc8_q9up_codes, 1, 1, INIT_VLC_USE_NEW_STATIC); - - scfi_vlc[0].table = scfi0_table; - scfi_vlc[0].table_allocated = 1 << MPC8_SCFI0_BITS; - init_vlc(&scfi_vlc[0], MPC8_SCFI0_BITS, MPC8_SCFI0_SIZE, - mpc8_scfi0_bits, 1, 1, - mpc8_scfi0_codes, 1, 1, INIT_VLC_USE_NEW_STATIC); - scfi_vlc[1].table = scfi1_table; - scfi_vlc[1].table_allocated = 1 << MPC8_SCFI1_BITS; - init_vlc(&scfi_vlc[1], MPC8_SCFI1_BITS, MPC8_SCFI1_SIZE, - mpc8_scfi1_bits, 1, 1, - mpc8_scfi1_codes, 1, 1, INIT_VLC_USE_NEW_STATIC); - - dscf_vlc[0].table = dscf0_table; - dscf_vlc[0].table_allocated = 560; - init_vlc(&dscf_vlc[0], MPC8_DSCF0_BITS, MPC8_DSCF0_SIZE, - mpc8_dscf0_bits, 1, 1, - mpc8_dscf0_codes, 1, 1, INIT_VLC_USE_NEW_STATIC); - dscf_vlc[1].table = dscf1_table; - dscf_vlc[1].table_allocated = 598; - init_vlc(&dscf_vlc[1], MPC8_DSCF1_BITS, MPC8_DSCF1_SIZE, - mpc8_dscf1_bits, 1, 1, - mpc8_dscf1_codes, 1, 1, INIT_VLC_USE_NEW_STATIC); - - q3_vlc[0].table = q3_0_table; - q3_vlc[0].table_allocated = 512; - ff_init_vlc_sparse(&q3_vlc[0], MPC8_Q3_BITS, MPC8_Q3_SIZE, - mpc8_q3_bits, 1, 1, - mpc8_q3_codes, 1, 1, - mpc8_q3_syms, 1, 1, INIT_VLC_USE_NEW_STATIC); - q3_vlc[1].table = q3_1_table; - q3_vlc[1].table_allocated = 516; - ff_init_vlc_sparse(&q3_vlc[1], MPC8_Q4_BITS, MPC8_Q4_SIZE, - mpc8_q4_bits, 1, 1, - mpc8_q4_codes, 1, 1, - mpc8_q4_syms, 1, 1, INIT_VLC_USE_NEW_STATIC); + INIT_VLC_STATIC_FROM_LENGTHS(&band_vlc, MPC8_BANDS_BITS, MPC8_BANDS_SIZE, + mpc8_bands_bits, 1, + mpc8_bands_syms, 1, 1, 0, 0, 542); + + INIT_VLC_STATIC_FROM_LENGTHS(&q1_vlc, MPC8_Q1_BITS, MPC8_Q1_SIZE, + mpc8_q1_bits, 1, + mpc8_q1_syms, 1, 1, 0, 0, 520); + INIT_VLC_STATIC_FROM_LENGTHS(&q9up_vlc, MPC8_Q9UP_BITS, MPC8_Q9UP_SIZE, + mpc8_q9up_bits, 1, + mpc8_q9up_syms, 1, 1, 0, 0, 524); + + INIT_VLC_STATIC_FROM_LENGTHS(&scfi_vlc[0], MPC8_SCFI0_BITS, MPC8_SCFI0_SIZE, + mpc8_scfi0_bits, 1, + mpc8_scfi0_syms, 1, 1, 0, 0, 1 << MPC8_SCFI0_BITS); + INIT_VLC_STATIC_FROM_LENGTHS(&scfi_vlc[1], MPC8_SCFI1_BITS, MPC8_SCFI1_SIZE, + mpc8_scfi1_bits, 1, + mpc8_scfi1_syms, 1, 1, 0, 0, 1 << MPC8_SCFI1_BITS); + + INIT_VLC_STATIC_FROM_LENGTHS(&dscf_vlc[0], MPC8_DSCF0_BITS, MPC8_DSCF0_SIZE, + mpc8_dscf0_bits, 1, + mpc8_dscf0_syms, 1, 1, 0, 0, 560); + INIT_VLC_STATIC_FROM_LENGTHS(&dscf_vlc[1], MPC8_DSCF1_BITS, MPC8_DSCF1_SIZE, + mpc8_dscf1_bits, 1, + mpc8_dscf1_syms, 1, 1, 0, 0, 598); + + INIT_VLC_STATIC_FROM_LENGTHS(&q3_vlc[0], MPC8_Q3_BITS, MPC8_Q3_SIZE, + mpc8_q3_bits, 1, + mpc8_q3_syms, 1, 1, 0, 0, 512); + INIT_VLC_STATIC_FROM_LENGTHS(&q3_vlc[1], MPC8_Q4_BITS, MPC8_Q4_SIZE, + mpc8_q4_bits, 1, + mpc8_q4_syms, 1, 1, 0, 0, 516); for(i = 0; i < 2; i++){ res_vlc[i].table = &codes_table[vlc_offsets[0+i]]; res_vlc[i].table_allocated = vlc_offsets[1+i] - vlc_offsets[0+i]; - init_vlc(&res_vlc[i], MPC8_RES_BITS, MPC8_RES_SIZE, - &mpc8_res_bits[i], 1, 1, - &mpc8_res_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC); + ff_init_vlc_from_lengths(&res_vlc[i], MPC8_RES_BITS, MPC8_RES_SIZE, + mpc8_res_bits[i], 1, + mpc8_res_syms[i], 1, 1, + 0, INIT_VLC_USE_NEW_STATIC, NULL); q2_vlc[i].table = &codes_table[vlc_offsets[2+i]]; q2_vlc[i].table_allocated = vlc_offsets[3+i] - vlc_offsets[2+i]; - init_vlc(&q2_vlc[i], MPC8_Q2_BITS, MPC8_Q2_SIZE, - &mpc8_q2_bits[i], 1, 1, - &mpc8_q2_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC); + ff_init_vlc_from_lengths(&q2_vlc[i], MPC8_Q2_BITS, MPC8_Q2_SIZE, + mpc8_q2_bits[i], 1, + mpc8_q2_syms[i], 1, 1, + 0, INIT_VLC_USE_NEW_STATIC, NULL); quant_vlc[0][i].table = &codes_table[vlc_offsets[4+i]]; quant_vlc[0][i].table_allocated = vlc_offsets[5+i] - vlc_offsets[4+i]; - init_vlc(&quant_vlc[0][i], MPC8_Q5_BITS, MPC8_Q5_SIZE, - &mpc8_q5_bits[i], 1, 1, - &mpc8_q5_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC); + ff_init_vlc_from_lengths(&quant_vlc[0][i], MPC8_Q5_BITS, MPC8_Q5_SIZE, + mpc8_q5_bits[i], 1, + mpc8_q5_syms[i], 1, 1, + 0, INIT_VLC_USE_NEW_STATIC, NULL); quant_vlc[1][i].table = &codes_table[vlc_offsets[6+i]]; quant_vlc[1][i].table_allocated = vlc_offsets[7+i] - vlc_offsets[6+i]; - init_vlc(&quant_vlc[1][i], MPC8_Q6_BITS, MPC8_Q6_SIZE, - &mpc8_q6_bits[i], 1, 1, - &mpc8_q6_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC); + ff_init_vlc_from_lengths(&quant_vlc[1][i], MPC8_Q6_BITS, MPC8_Q6_SIZE, + mpc8_q6_bits[i], 1, + mpc8_q6_syms[i], 1, 1, + 0, INIT_VLC_USE_NEW_STATIC, NULL); quant_vlc[2][i].table = &codes_table[vlc_offsets[8+i]]; quant_vlc[2][i].table_allocated = vlc_offsets[9+i] - vlc_offsets[8+i]; - init_vlc(&quant_vlc[2][i], MPC8_Q7_BITS, MPC8_Q7_SIZE, - &mpc8_q7_bits[i], 1, 1, - &mpc8_q7_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC); + ff_init_vlc_from_lengths(&quant_vlc[2][i], MPC8_Q7_BITS, MPC8_Q7_SIZE, + mpc8_q7_bits[i], 1, + mpc8_q7_syms[i], 1, 1, + 0, INIT_VLC_USE_NEW_STATIC, NULL); quant_vlc[3][i].table = &codes_table[vlc_offsets[10+i]]; quant_vlc[3][i].table_allocated = vlc_offsets[11+i] - vlc_offsets[10+i]; - init_vlc(&quant_vlc[3][i], MPC8_Q8_BITS, MPC8_Q8_SIZE, - &mpc8_q8_bits[i], 1, 1, - &mpc8_q8_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC); + ff_init_vlc_from_lengths(&quant_vlc[3][i], MPC8_Q8_BITS, MPC8_Q8_SIZE, + mpc8_q8_bits[i], 1, + mpc8_q8_syms[i], 1, 1, + 0, INIT_VLC_USE_NEW_STATIC, NULL); } vlc_initialized = 1; ff_mpa_synth_init_fixed(); |