Signed-off-by: Marton Balint <c...@passwd.hu>
---
libswresample/resample.c | 29 +++++++----------------------
libswresample/resample.h | 4 ++--
libswresample/resample_template.c | 14 ++++++++++++--
3 files changed, 21 insertions(+), 26 deletions(-)
diff --git a/libswresample/resample.c b/libswresample/resample.c
index 17cebad01b..89859dec79 100644
--- a/libswresample/resample.c
+++ b/libswresample/resample.c
@@ -356,26 +356,7 @@ static int multiple_resample(ResampleContext *c, AudioData
*dst, int dst_size, A
*consumed = 0;
- if (c->filter_length == 1 && c->phase_count == 1) {
- int64_t index2= (1LL<<32)*c->frac/c->src_incr + (1LL<<32)*c->index + 1;
- int64_t incr= (1LL<<32) * c->dst_incr / c->src_incr + 1;
- int new_size = (src_size * (int64_t)c->src_incr - c->frac +
c->dst_incr - 1) / c->dst_incr;
-
- dst_size = FFMAX(FFMIN(dst_size, new_size), 0);
- if (dst_size > 0) {
- for (i = 0; i < dst->ch_count; i++) {
- c->dsp.resample_one(dst->ch[i], src->ch[i], dst_size, index2,
incr);
- if (i+1 == dst->ch_count) {
- c->index += dst_size * c->dst_incr_div;
- c->index += (c->frac + dst_size *
(int64_t)c->dst_incr_mod) / c->src_incr;
- av_assert2(c->index >= 0);
- *consumed = c->index;
- c->frac = (c->frac + dst_size *
(int64_t)c->dst_incr_mod) % c->src_incr;
- c->index = 0;
- }
- }
- }
- } else {
+ {
int64_t end_index = (1LL + src_size - c->filter_length) *
c->phase_count;
int64_t delta_frac = (end_index - c->index) * c->src_incr - c->frac;
int delta_n = (delta_frac + c->dst_incr - 1) / c->dst_incr;
@@ -386,8 +367,12 @@ static int multiple_resample(ResampleContext *c, AudioData
*dst, int dst_size, A
if (dst_size > 0) {
/* resample_linear and resample_common should have same behavior
* when frac and dst_incr_mod are zero */
- resample_func = (c->linear && (c->frac || c->dst_incr_mod)) ?
- c->dsp.resample_linear : c->dsp.resample_common;
+ if (c->filter_length == 1 && c->phase_count == 1)
+ resample_func = c->dsp.resample_one;
+ else if (c->linear && (c->frac || c->dst_incr_mod))
+ resample_func = c->dsp.resample_linear;
+ else
+ resample_func = c->dsp.resample_common;
for (i = 0; i < dst->ch_count; i++)
*consumed = resample_func(c, dst->ch[i], src->ch[i], dst_size,
i+1 == dst->ch_count);
}
diff --git a/libswresample/resample.h b/libswresample/resample.h
index 1731dad3cf..8cc29effe8 100644
--- a/libswresample/resample.h
+++ b/libswresample/resample.h
@@ -51,8 +51,8 @@ typedef struct ResampleContext {
int phase_count_compensation; /* desired phase_count when
compensation is enabled */
struct {
- void (*resample_one)(void *dst, const void *src,
- int n, int64_t index, int64_t incr);
+ int (*resample_one)(struct ResampleContext *c, void *dst,
+ const void *src, int n, int update_ctx);
int (*resample_common)(struct ResampleContext *c, void *dst,
const void *src, int n, int update_ctx);
int (*resample_linear)(struct ResampleContext *c, void *dst,
diff --git a/libswresample/resample_template.c
b/libswresample/resample_template.c
index 4c227b9940..a8114ea918 100644
--- a/libswresample/resample_template.c
+++ b/libswresample/resample_template.c
@@ -72,17 +72,27 @@
#endif
-static void RENAME(resample_one)(void *dest, const void *source,
- int dst_size, int64_t index2, int64_t incr)
+static int RENAME(resample_one)(ResampleContext *c,
+ void *dest, const void *source,
+ int dst_size, int update_ctx)
{
DELEM *dst = dest;
const DELEM *src = source;
int dst_index;
+ int64_t index2 = (1LL << 32) * c->frac / c->src_incr + 1 + (1LL << 32)
* c->index;
+ int64_t incr = (1LL << 32) * c->dst_incr / c->src_incr + 1;
for (dst_index = 0; dst_index < dst_size; dst_index++) {
dst[dst_index] = src[index2 >> 32];
index2 += incr;
}
+
+ if (update_ctx) {
+ c->frac = (c->frac + dst_size * (int64_t)c->dst_incr_mod) %
c->src_incr;
+ c->index = 0;
+ }
+
+ return index2 >> 32;
}
static int RENAME(resample_common)(ResampleContext *c,
--
2.35.3
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