-static int cbs_av1_read_su(CodedBitstreamContext *ctx, GetBitContext *gbc,
- int width, const char *name,
- const int *subscripts, int32_t *write_to)
-{
- uint32_t magnitude;
- int position, sign;
- int32_t value;
-
- if (ctx->trace_enable)
- position = get_bits_count(gbc);
-
- if (get_bits_left(gbc) < width + 1) {
- av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid signed value at "
- "%s: bitstream ended.\n", name);
- return AVERROR_INVALIDDATA;
- }
-
- magnitude = get_bits(gbc, width);
- sign = get_bits1(gbc);
- value = sign ? -(int32_t)magnitude : magnitude;
-
- if (ctx->trace_enable) {
- char bits[33];
- int i;
- for (i = 0; i < width; i++)
- bits[i] = magnitude >> (width - i - 1) & 1 ? '1' : '0';
- bits[i] = sign ? '1' : '0';
- bits[i + 1] = 0;
-
- ff_cbs_trace_syntax_element(ctx, position,
- name, subscripts, bits, value);
- }
-
- *write_to = value;
- return 0;
-}
-
-static int cbs_av1_write_su(CodedBitstreamContext *ctx, PutBitContext *pbc,
- int width, const char *name,
- const int *subscripts, int32_t value)
-{
- uint32_t magnitude;
- int sign;
-
- if (put_bits_left(pbc) < width + 1)
- return AVERROR(ENOSPC);
-
- sign = value < 0;
- magnitude = sign ? -value : value;
-
- if (ctx->trace_enable) {
- char bits[33];
- int i;
- for (i = 0; i < width; i++)
- bits[i] = magnitude >> (width - i - 1) & 1 ? '1' : '0';
- bits[i] = sign ? '1' : '0';
- bits[i + 1] = 0;
-
- ff_cbs_trace_syntax_element(ctx, put_bits_count(pbc),
- name, subscripts, bits, value);
- }
-
- put_bits(pbc, width, magnitude);
- put_bits(pbc, 1, sign);
-
- return 0;
-}
-