31 #define DECLARE_RESAMPLE_COMMON_TEMPLATE(TYPE, DELEM, FELEM, FELEM2, OUT) \
33 void ff_resample_common_apply_filter_x4_##TYPE##_neon(FELEM2 *acc, const DELEM *src, \
34 const FELEM *filter, int length); \
36 void ff_resample_common_apply_filter_x8_##TYPE##_neon(FELEM2 *acc, const DELEM *src, \
37 const FELEM *filter, int length); \
39 static int ff_resample_common_##TYPE##_neon(ResampleContext *c, void *dest, const void *source, \
40 int n, int update_ctx) \
43 const DELEM *src = source; \
45 int index = c->index; \
47 int sample_index = 0; \
48 int x4_aligned_filter_length = c->filter_length & ~3; \
49 int x8_aligned_filter_length = c->filter_length & ~7; \
51 while (index >= c->phase_count) { \
53 index -= c->phase_count; \
56 for (dst_index = 0; dst_index < n; dst_index++) { \
57 FELEM *filter = ((FELEM *) c->filter_bank) + c->filter_alloc * index; \
61 if (x8_aligned_filter_length >= 8) { \
62 ff_resample_common_apply_filter_x8_##TYPE##_neon(&val, &src[sample_index], \
63 filter, x8_aligned_filter_length); \
64 i += x8_aligned_filter_length; \
66 } else if (x4_aligned_filter_length >= 4) { \
67 ff_resample_common_apply_filter_x4_##TYPE##_neon(&val, &src[sample_index], \
68 filter, x4_aligned_filter_length); \
69 i += x4_aligned_filter_length; \
71 for (; i < c->filter_length; i++) { \
72 val += src[sample_index + i] * (FELEM2)filter[i]; \
74 OUT(dst[dst_index], val); \
76 frac += c->dst_incr_mod; \
77 index += c->dst_incr_div; \
78 if (frac >= c->src_incr) { \
79 frac -= c->src_incr; \
83 while (index >= c->phase_count) { \
85 index -= c->phase_count; \
94 return sample_index; \
97 #define OUT(d, v) d = v
101 #define OUT(d, v) (v) = ((v) + (1<<(14)))>>15; (d) = av_clip_int16(v)
114 c->dsp.resample_common = ff_resample_common_float_neon;
117 c->dsp.resample_common = ff_resample_common_s16_neon;
simple assert() macros that are a bit more flexible than ISO C assert().
static atomic_int cpu_flags
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
@ AV_SAMPLE_FMT_FLTP
float, planar
@ AV_SAMPLE_FMT_S16P
signed 16 bits, planar
av_cold void swri_resample_dsp_arm_init(ResampleContext *c)
#define DECLARE_RESAMPLE_COMMON_TEMPLATE(TYPE, DELEM, FELEM, FELEM2, OUT)