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| author | Andreas Rheinhardt <andreas.rheinhardt@gmail.com> | 2020-11-01 17:59:12 +0100 |
|---|---|---|
| committer | Andreas Rheinhardt <andreas.rheinhardt@gmail.com> | 2020-12-08 17:51:46 +0100 |
| commit | fd964dad1eaab7e86620f0c7a39e670bcc9318ec (patch) | |
| tree | 9445106d7c167281b0c3349124b8e912b64cb30a /libavcodec/atrac3plus.c | |
| parent | e27466d7e59f0a485f3720f33cd9c54d69fff138 (diff) | |
| download | ffmpeg-fd964dad1eaab7e86620f0c7a39e670bcc9318ec.tar.gz | |
avcodec/atrac3plus: Simplify getting offset of VLC in VLC_TYPE buf
The earlier code used several different offset parameters that were
initialized to magic values. This is unnecessary.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Diffstat (limited to 'libavcodec/atrac3plus.c')
| -rw-r--r-- | libavcodec/atrac3plus.c | 25 |
1 files changed, 10 insertions, 15 deletions
diff --git a/libavcodec/atrac3plus.c b/libavcodec/atrac3plus.c index c93d42ab39..b22e773e8e 100644 --- a/libavcodec/atrac3plus.c +++ b/libavcodec/atrac3plus.c @@ -75,7 +75,7 @@ static av_cold void build_canonical_huff(const uint8_t *cb, const uint8_t *xlat, av_cold void ff_atrac3p_init_vlcs(void) { - int i, wl_vlc_offs, ct_vlc_offs, sf_vlc_offs, tab_offset; + int i, tab_offset = 0; static const uint8_t wl_nb_bits[4] = { 2, 3, 5, 5 }; static const uint8_t wl_nb_codes[4] = { 3, 5, 8, 8 }; @@ -127,39 +127,34 @@ av_cold void ff_atrac3p_init_vlcs(void) atrac3p_huff_freq_xlat }; - for (i = 0, wl_vlc_offs = 0, ct_vlc_offs = 2508; i < 4; i++) { - wl_vlc_tabs[i].table = &tables_data[wl_vlc_offs]; + for (int i = 0; i < 4; i++) { + wl_vlc_tabs[i].table = &tables_data[tab_offset]; wl_vlc_tabs[i].table_allocated = 1 << wl_nb_bits[i]; - ct_vlc_tabs[i].table = &tables_data[ct_vlc_offs]; - ct_vlc_tabs[i].table_allocated = 1 << ct_nb_bits[i]; - + tab_offset += 1 << wl_nb_bits[i]; ff_init_vlc_from_lengths(&wl_vlc_tabs[i], wl_nb_bits[i], wl_nb_codes[i], &wl_huffs[i][0][1], 2, &wl_huffs[i][0][0], 2, 1, 0, INIT_VLC_USE_NEW_STATIC, NULL); + ct_vlc_tabs[i].table = &tables_data[tab_offset]; + ct_vlc_tabs[i].table_allocated = 1 << ct_nb_bits[i]; + tab_offset += 1 << ct_nb_bits[i]; ff_init_vlc_from_lengths(&ct_vlc_tabs[i], ct_nb_bits[i], ct_nb_codes[i], &ct_huffs[i][0][1], 2, &ct_huffs[i][0][0], 2, 1, 0, INIT_VLC_USE_NEW_STATIC, NULL); - - wl_vlc_offs += wl_vlc_tabs[i].table_allocated; - ct_vlc_offs += ct_vlc_tabs[i].table_allocated; } - for (i = 0, sf_vlc_offs = 76; i < 8; i++) { - sf_vlc_tabs[i].table = &tables_data[sf_vlc_offs]; + for (int i = 0; i < 8; i++) { + sf_vlc_tabs[i].table = &tables_data[tab_offset]; sf_vlc_tabs[i].table_allocated = 1 << sf_nb_bits[i]; - + tab_offset += 1 << sf_nb_bits[i]; ff_init_vlc_from_lengths(&sf_vlc_tabs[i], sf_nb_bits[i], sf_nb_codes[i], &sf_huffs[i][0][1], 2, &sf_huffs[i][0][0], 2, 1, 0, INIT_VLC_USE_NEW_STATIC, NULL); - sf_vlc_offs += sf_vlc_tabs[i].table_allocated; } - tab_offset = 2564; - /* build huffman tables for spectrum decoding */ for (i = 0; i < 112; i++) { if (atrac3p_spectra_tabs[i].redirect < 0) |