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ffmpeg.wasm-core
Commit 43ff4aed authored by Andreas Cadhalpun's avatar Andreas Cadhalpun
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lavc: use get_bitsz to simplify the code 

Reviewed-by: 's avatarMichael Niedermayer <michael@niedermayer.cc>
Signed-off-by: 's avatarAndreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
parent 713654d9
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Showing with 13 additions and 17 deletions
libavcodec/atrac3plus.c
View file @ 43ff4aed
......@@ -39,9 +39,6 @@ static VLC spec_vlc_tabs[112];
static VLC gain_vlc_tabs[11];
static VLC tone_vlc_tabs[7];
#define GET_DELTA(gb, delta_bits) \
((delta_bits) ? get_bits((gb), (delta_bits)) : 0)
/**
* Generate canonical VLC table from given descriptor.
*
......@@ -384,7 +381,7 @@ static int decode_channel_wordlen(GetBitContext *gb, Atrac3pChanUnitCtx *ctx,
chan->qu_wordlen[i] = get_bits(gb, 3);
for (i = pos; i < chan->num_coded_vals; i++)
chan->qu_wordlen[i] = (min_val + GET_DELTA(gb, delta_bits)) & 7;
chan->qu_wordlen[i] = (min_val + get_bitsz(gb, delta_bits)) & 7;
}
}
break;
......@@ -516,7 +513,7 @@ static int decode_channel_sf_idx(GetBitContext *gb, Atrac3pChanUnitCtx *ctx,
/* all others are: min_val + delta */
for (i = num_long_vals; i < ctx->used_quant_units; i++)
chan->qu_sf_idx[i] = (chan->qu_sf_idx[i] + min_val +
GET_DELTA(gb, delta_bits)) & 0x3F;
get_bitsz(gb, delta_bits)) & 0x3F;
} else {
num_long_vals = get_bits(gb, 5);
delta_bits = get_bits(gb, 3);
......@@ -534,7 +531,7 @@ static int decode_channel_sf_idx(GetBitContext *gb, Atrac3pChanUnitCtx *ctx,
/* all others are: min_val + delta */
for (i = num_long_vals; i < ctx->used_quant_units; i++)
chan->qu_sf_idx[i] = (min_val +
GET_DELTA(gb, delta_bits)) & 0x3F;
get_bitsz(gb, delta_bits)) & 0x3F;
}
}
break;
......@@ -1014,7 +1011,7 @@ static int decode_gainc_npoints(GetBitContext *gb, Atrac3pChanUnitCtx *ctx,
min_val = get_bits(gb, 3);
for (i = 0; i < coded_subbands; i++) {
chan->gain_data[i].num_points = min_val + GET_DELTA(gb, delta_bits);
chan->gain_data[i].num_points = min_val + get_bitsz(gb, delta_bits);
if (chan->gain_data[i].num_points > 7)
return AVERROR_INVALIDDATA;
}
......@@ -1134,7 +1131,7 @@ static int decode_gainc_levels(GetBitContext *gb, Atrac3pChanUnitCtx *ctx,
for (sb = 0; sb < coded_subbands; sb++)
for (i = 0; i < chan->gain_data[sb].num_points; i++) {
chan->gain_data[sb].lev_code[i] = min_val + GET_DELTA(gb, delta_bits);
chan->gain_data[sb].lev_code[i] = min_val + get_bitsz(gb, delta_bits);
if (chan->gain_data[sb].lev_code[i] > 15)
return AVERROR_INVALIDDATA;
}
......
libavcodec/escape124.c
View file @ 43ff4aed
......@@ -155,7 +155,7 @@ static MacroBlock decode_macroblock(Escape124Context* s, GetBitContext* gb,
// depth = 0 means that this shouldn't read any bits;
// in theory, this is the same as get_bits(gb, 0), but
// that doesn't actually work.
block_index = depth ? get_bits(gb, depth) : 0;
block_index = get_bitsz(gb, depth);
if (*codebook_index == 1) {
block_index += superblock_index << s->codebooks[1].depth;
......
libavcodec/hevc.c
View file @ 43ff4aed
......@@ -469,7 +469,7 @@ static int hls_slice_header(HEVCContext *s)
slice_address_length = av_ceil_log2(s->ps.sps->ctb_width *
s->ps.sps->ctb_height);
sh->slice_segment_addr = slice_address_length ? get_bits(gb, slice_address_length) : 0;
sh->slice_segment_addr = get_bitsz(gb, slice_address_length);
if (sh->slice_segment_addr >= s->ps.sps->ctb_width * s->ps.sps->ctb_height) {
av_log(s->avctx, AV_LOG_ERROR,
"Invalid slice segment address: %u.\n",
......
libavcodec/hevc_parser.c
View file @ 43ff4aed
......@@ -318,7 +318,7 @@ static inline int parse_nal_units(AVCodecParserContext *s, const uint8_t *buf,
slice_address_length = av_ceil_log2_c(ps->sps->ctb_width *
ps->sps->ctb_height);
sh->slice_segment_addr = slice_address_length ? get_bits(gb, slice_address_length) : 0;
sh->slice_segment_addr = get_bitsz(gb, slice_address_length);
if (sh->slice_segment_addr >= ps->sps->ctb_width * ps->sps->ctb_height) {
av_log(avctx, AV_LOG_ERROR, "Invalid slice segment address: %u.\n",
sh->slice_segment_addr);
......
libavcodec/wavpack.c
View file @ 43ff4aed
......@@ -93,7 +93,7 @@ static av_always_inline int get_tail(GetBitContext *gb, int k)
return 0;
p = av_log2(k);
e = (1 << (p + 1)) - k - 1;
res = p ? get_bits(gb, p) : 0;
res = get_bitsz(gb, p);
if (res >= e)
res = (res << 1) - e + get_bits1(gb);
return res;
......
libavcodec/wmalosslessdec.c
View file @ 43ff4aed
......@@ -422,8 +422,7 @@ static void decode_ac_filter(WmallDecodeCtx *s)
s->acfilter_scaling = get_bits(&s->gb, 4);
for (i = 0; i < s->acfilter_order; i++)
s->acfilter_coeffs[i] = (s->acfilter_scaling ?
get_bits(&s->gb, s->acfilter_scaling) : 0) + 1;
s->acfilter_coeffs[i] = get_bitsz(&s->gb, s->acfilter_scaling) + 1;
}
static void decode_mclms(WmallDecodeCtx *s)
......@@ -436,7 +435,7 @@ static void decode_mclms(WmallDecodeCtx *s)
if (1 << cbits < s->mclms_scaling + 1)
cbits++;
send_coef_bits = (cbits ? get_bits(&s->gb, cbits) : 0) + 2;
send_coef_bits = get_bitsz(&s->gb, cbits) + 2;
for (i = 0; i < s->mclms_order * s->num_channels * s->num_channels; i++)
s->mclms_coeffs[i] = get_bits(&s->gb, send_coef_bits);
......@@ -489,7 +488,7 @@ static int decode_cdlms(WmallDecodeCtx *s)
if ((1 << cbits) < s->cdlms[c][i].scaling + 1)
cbits++;
s->cdlms[c][i].bitsend = (cbits ? get_bits(&s->gb, cbits) : 0) + 2;
s->cdlms[c][i].bitsend = get_bitsz(&s->gb, cbits) + 2;
shift_l = 32 - s->cdlms[c][i].bitsend;
shift_r = 32 - s->cdlms[c][i].scaling - 2;
for (j = 0; j < s->cdlms[c][i].coefsend; j++)
......
libavcodec/wmaprodec.c
View file @ 43ff4aed
......@@ -1222,7 +1222,7 @@ static int decode_subframe(WMAProDecodeCtx *s)
int num_fill_bits;
if (!(num_fill_bits = get_bits(&s->gb, 2))) {
int len = get_bits(&s->gb, 4);
num_fill_bits = (len ? get_bits(&s->gb, len) : 0) + 1;
num_fill_bits = get_bitsz(&s->gb, len) + 1;
}
if (num_fill_bits >= 0) {
......
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