mirror of https://git.ffmpeg.org/ffmpeg.git
avcodec/aacdec_template: Deduplicate VLCs
They (as well as their init code) are currently duplicated for the floating- and fixed-point decoders. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt
parent
1f15a7e9a8
commit
3b080fe7af
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@ -27,6 +27,11 @@
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#include "aac.h"
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#include "aacdectab.h"
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#include "aactab.h"
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#include "vlc.h"
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#include "libavutil/attributes.h"
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#include "libavutil/thread.h"
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const int8_t ff_tags_per_config[16] = { 0, 1, 1, 2, 3, 3, 4, 5, 0, 0, 0, 5, 5, 16, 5, 0 };
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@ -117,3 +122,41 @@ const AVChannelLayout ff_aac_ch_layout[] = {
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AV_CHANNEL_LAYOUT_7POINT1_TOP_BACK,
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{ 0 },
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};
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VLC ff_vlc_scalefactors;
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VLC ff_vlc_spectral[11];
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static av_cold void aacdec_common_init(void)
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{
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static VLCElem vlc_buf[304 + 270 + 550 + 300 + 328 +
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294 + 306 + 268 + 510 + 366 + 462];
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for (unsigned i = 0, offset = 0; i < 11; i++) {
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ff_vlc_spectral[i].table = &vlc_buf[offset];
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ff_vlc_spectral[i].table_allocated = FF_ARRAY_ELEMS(vlc_buf) - offset;
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ff_vlc_init_sparse(&ff_vlc_spectral[i], 8, ff_aac_spectral_sizes[i],
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ff_aac_spectral_bits[i], sizeof(ff_aac_spectral_bits[i][0]),
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sizeof(ff_aac_spectral_bits[i][0]),
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ff_aac_spectral_codes[i], sizeof(ff_aac_spectral_codes[i][0]),
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sizeof(ff_aac_spectral_codes[i][0]),
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ff_aac_codebook_vector_idx[i], sizeof(ff_aac_codebook_vector_idx[i][0]),
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sizeof(ff_aac_codebook_vector_idx[i][0]),
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VLC_INIT_STATIC_OVERLONG);
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offset += ff_vlc_spectral[i].table_size;
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}
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VLC_INIT_STATIC(&ff_vlc_scalefactors, 7,
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FF_ARRAY_ELEMS(ff_aac_scalefactor_code),
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ff_aac_scalefactor_bits,
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sizeof(ff_aac_scalefactor_bits[0]),
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sizeof(ff_aac_scalefactor_bits[0]),
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ff_aac_scalefactor_code,
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sizeof(ff_aac_scalefactor_code[0]),
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sizeof(ff_aac_scalefactor_code[0]),
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352);
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}
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av_cold void ff_aacdec_common_init_once(void)
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{
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static AVOnce init_static_once = AV_ONCE_INIT;
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ff_thread_once(&init_static_once, aacdec_common_init);
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}
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@ -94,9 +94,6 @@
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#include "decode.h"
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#include "internal.h"
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static VLC vlc_scalefactors;
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static VLC vlc_spectral[11];
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static int output_configure(AACContext *ac,
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uint8_t layout_map[MAX_ELEM_ID*4][3], int tags,
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enum OCStatus oc_type, int get_new_frame);
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@ -1128,36 +1125,11 @@ static void aacdec_init(AACContext *ac);
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static av_cold void aac_static_table_init(void)
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{
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static VLCElem vlc_buf[304 + 270 + 550 + 300 + 328 +
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294 + 306 + 268 + 510 + 366 + 462];
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for (unsigned i = 0, offset = 0; i < 11; i++) {
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vlc_spectral[i].table = &vlc_buf[offset];
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vlc_spectral[i].table_allocated = FF_ARRAY_ELEMS(vlc_buf) - offset;
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ff_vlc_init_sparse(&vlc_spectral[i], 8, ff_aac_spectral_sizes[i],
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ff_aac_spectral_bits[i], sizeof(ff_aac_spectral_bits[i][0]),
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sizeof(ff_aac_spectral_bits[i][0]),
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ff_aac_spectral_codes[i], sizeof(ff_aac_spectral_codes[i][0]),
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sizeof(ff_aac_spectral_codes[i][0]),
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ff_aac_codebook_vector_idx[i], sizeof(ff_aac_codebook_vector_idx[i][0]),
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sizeof(ff_aac_codebook_vector_idx[i][0]),
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VLC_INIT_STATIC_OVERLONG);
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offset += vlc_spectral[i].table_size;
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}
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AAC_RENAME(ff_aac_sbr_init)();
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ff_aacdec_common_init_once();
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ff_aac_tableinit();
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VLC_INIT_STATIC(&vlc_scalefactors, 7,
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FF_ARRAY_ELEMS(ff_aac_scalefactor_code),
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ff_aac_scalefactor_bits,
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sizeof(ff_aac_scalefactor_bits[0]),
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sizeof(ff_aac_scalefactor_bits[0]),
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ff_aac_scalefactor_code,
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sizeof(ff_aac_scalefactor_code[0]),
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sizeof(ff_aac_scalefactor_code[0]),
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352);
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// window initialization
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AAC_RENAME(avpriv_kbd_window_init)(AAC_RENAME(aac_kbd_long_960), 4.0, 960);
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AAC_RENAME(avpriv_kbd_window_init)(AAC_RENAME(aac_kbd_short_120), 6.0, 120);
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@ -1526,7 +1498,7 @@ static int decode_scalefactors(AACContext *ac, INTFLOAT sf[120], GetBitContext *
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} else if ((band_type[idx] == INTENSITY_BT) ||
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(band_type[idx] == INTENSITY_BT2)) {
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for (; i < run_end; i++, idx++) {
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offset[2] += get_vlc2(gb, vlc_scalefactors.table, 7, 3) - SCALE_DIFF_ZERO;
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offset[2] += get_vlc2(gb, ff_vlc_scalefactors.table, 7, 3) - SCALE_DIFF_ZERO;
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clipped_offset = av_clip(offset[2], -155, 100);
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if (offset[2] != clipped_offset) {
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avpriv_request_sample(ac->avctx,
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@ -1545,7 +1517,7 @@ static int decode_scalefactors(AACContext *ac, INTFLOAT sf[120], GetBitContext *
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if (noise_flag-- > 0)
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offset[1] += get_bits(gb, NOISE_PRE_BITS) - NOISE_PRE;
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else
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offset[1] += get_vlc2(gb, vlc_scalefactors.table, 7, 3) - SCALE_DIFF_ZERO;
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offset[1] += get_vlc2(gb, ff_vlc_scalefactors.table, 7, 3) - SCALE_DIFF_ZERO;
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clipped_offset = av_clip(offset[1], -100, 155);
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if (offset[1] != clipped_offset) {
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avpriv_request_sample(ac->avctx,
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@ -1561,7 +1533,7 @@ static int decode_scalefactors(AACContext *ac, INTFLOAT sf[120], GetBitContext *
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}
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} else {
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for (; i < run_end; i++, idx++) {
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offset[0] += get_vlc2(gb, vlc_scalefactors.table, 7, 3) - SCALE_DIFF_ZERO;
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offset[0] += get_vlc2(gb, ff_vlc_scalefactors.table, 7, 3) - SCALE_DIFF_ZERO;
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if (offset[0] > 255U) {
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av_log(ac->avctx, AV_LOG_ERROR,
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"Scalefactor (%d) out of range.\n", offset[0]);
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@ -1734,7 +1706,7 @@ static int decode_spectrum_and_dequant(AACContext *ac, INTFLOAT coef[1024],
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#if !USE_FIXED
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const float *vq = ff_aac_codebook_vector_vals[cbt_m1];
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#endif /* !USE_FIXED */
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const VLCElem *vlc_tab = vlc_spectral[cbt_m1].table;
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const VLCElem *vlc_tab = ff_vlc_spectral[cbt_m1].table;
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OPEN_READER(re, gb);
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switch (cbt_m1 >> 1) {
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@ -2308,7 +2280,7 @@ static int decode_cce(AACContext *ac, GetBitContext *gb, ChannelElement *che)
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INTFLOAT gain_cache = FIXR10(1.);
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if (c) {
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cge = coup->coupling_point == AFTER_IMDCT ? 1 : get_bits1(gb);
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gain = cge ? get_vlc2(gb, vlc_scalefactors.table, 7, 3) - 60: 0;
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gain = cge ? get_vlc2(gb, ff_vlc_scalefactors.table, 7, 3) - 60: 0;
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gain_cache = GET_GAIN(scale, gain);
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#if USE_FIXED
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if ((abs(gain_cache)-1024) >> 3 > 30)
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@ -2322,7 +2294,7 @@ static int decode_cce(AACContext *ac, GetBitContext *gb, ChannelElement *che)
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for (sfb = 0; sfb < sce->ics.max_sfb; sfb++, idx++) {
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if (sce->band_type[idx] != ZERO_BT) {
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if (!cge) {
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int t = get_vlc2(gb, vlc_scalefactors.table, 7, 3) - 60;
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int t = get_vlc2(gb, ff_vlc_scalefactors.table, 7, 3) - 60;
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if (t) {
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int s = 1;
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t = gain += t;
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@ -30,8 +30,17 @@
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#include <stdint.h>
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#include "vlc.h"
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#include "libavutil/attributes_internal.h"
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#include "libavutil/channel_layout.h"
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FF_VISIBILITY_PUSH_HIDDEN
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void ff_aacdec_common_init_once(void);
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extern VLC ff_vlc_scalefactors;
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extern VLC ff_vlc_spectral[11];
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extern const int8_t ff_tags_per_config[16];
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extern const uint8_t ff_aac_channel_layout_map[16][16][3];
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@ -43,5 +52,6 @@ extern const uint64_t ff_aac_channel_layout[];
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#endif
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extern const AVChannelLayout ff_aac_ch_layout[];
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FF_VISIBILITY_POP_HIDDEN
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#endif /* AVCODEC_AACDECTAB_H */
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