void memcpy_by_channel_mask2(void *dst, uint32_t dst_mask,
const void *src, uint32_t src_mask, size_t sample_size, size_t count)
{
int8_t idxary[32];
uint32_t src_channels = popcount(src_mask);
uint32_t dst_channels =
memcpy_by_index_array_initialization(idxary, 32, dst_mask, src_mask);
memcpy_by_index_array(dst, dst_channels, src, src_channels, idxary, sample_size, count);
}
size_t memcpy_by_index_array_initialization_from_channel_mask(int8_t *idxary, size_t arysize,
audio_channel_mask_t dst_channel_mask, audio_channel_mask_t src_channel_mask)
{
const audio_channel_representation_t src_representation =
audio_channel_mask_get_representation(src_channel_mask);
const audio_channel_representation_t dst_representation =
audio_channel_mask_get_representation(dst_channel_mask);
const uint32_t src_bits = audio_channel_mask_get_bits(src_channel_mask);
const uint32_t dst_bits = audio_channel_mask_get_bits(dst_channel_mask);
switch (src_representation) {
case AUDIO_CHANNEL_REPRESENTATION_POSITION:
switch (dst_representation) {
case AUDIO_CHANNEL_REPRESENTATION_POSITION:
return memcpy_by_index_array_initialization(idxary, arysize,
dst_bits, src_bits);
case AUDIO_CHANNEL_REPRESENTATION_INDEX:
return memcpy_by_index_array_initialization_dst_index(idxary, arysize,
dst_bits, src_bits);
default:
return 0;
}
break;
case AUDIO_CHANNEL_REPRESENTATION_INDEX:
switch (dst_representation) {
case AUDIO_CHANNEL_REPRESENTATION_POSITION:
return memcpy_by_index_array_initialization_src_index(idxary, arysize,
dst_bits, src_bits);
case AUDIO_CHANNEL_REPRESENTATION_INDEX:
return memcpy_by_index_array_initialization(idxary, arysize,
dst_bits, src_bits);
default:
return 0;
}
break;
default:
return 0;
}
}
void memcpy_by_channel_mask(void *dst, uint32_t dst_mask,
const void *src, uint32_t src_mask, size_t sample_size, size_t count)
{
#if 0
/* alternate way of handling memcpy_by_channel_mask by using the idxary */
int8_t idxary[32];
uint32_t src_channels = popcount(src_mask);
uint32_t dst_channels =
memcpy_by_index_array_initialization(idxary, 32, dst_mask, src_mask);
memcpy_by_idxary(dst, dst_channels, src, src_channels, idxary, sample_size, count);
#else
if (dst_mask == src_mask) {
memcpy(dst, src, sample_size * popcount(dst_mask) * count);
return;
}
switch (sample_size) {
case 1: {
uint8_t *udst = (uint8_t*)dst;
const uint8_t *usrc = (const uint8_t*)src;
copy_frame_by_mask(udst, dst_mask, usrc, src_mask, count, 0);
} break;
case 2: {
uint16_t *udst = (uint16_t*)dst;
const uint16_t *usrc = (const uint16_t*)src;
copy_frame_by_mask(udst, dst_mask, usrc, src_mask, count, 0);
} break;
case 3: { /* could be slow. use a struct to represent 3 bytes of data. */
uint8x3_t *udst = (uint8x3_t*)dst;
const uint8x3_t *usrc = (const uint8x3_t*)src;
static const uint8x3_t zero; /* tricky - we use this to zero out a sample */
copy_frame_by_mask(udst, dst_mask, usrc, src_mask, count, zero);
} break;
case 4: {
uint32_t *udst = (uint32_t*)dst;
const uint32_t *usrc = (const uint32_t*)src;
copy_frame_by_mask(udst, dst_mask, usrc, src_mask, count, 0);
} break;
default:
abort(); /* illegal value */
break;
}
#endif
}
// a modified version of the memcpy_by_channel_mask test
// but using 24 bit type and memcpy_by_index_array()
TEST(audio_utils_primitives, memcpy_by_index_array) {
uint32_t dst_mask;
uint32_t src_mask;
typedef struct {uint8_t c[3];} __attribute__((__packed__)) uint8x3_t;
uint8x3_t *u24ref = new uint8x3_t[65536];
uint8x3_t *u24ary = new uint8x3_t[65536];
uint16_t *u16ref = new uint16_t[65536];
uint16_t *u16ary = new uint16_t[65536];
EXPECT_EQ(sizeof(uint8x3_t), 3); // 3 bytes per struct
// tests prepare_index_array_from_masks()
EXPECT_EQ(memcpy_by_index_array_initialization(NULL, 0, 0x8d, 0x8c), 4);
EXPECT_EQ(memcpy_by_index_array_initialization(NULL, 0, 0x8c, 0x8d), 3);
for (size_t i = 0; i < 65536; ++i) {
u16ref[i] = i;
}
memcpy_to_p24_from_i16((uint8_t*)u24ref, (int16_t*)u16ref, 65536);
// Test when src mask is 0. Everything copied is zero.
src_mask = 0;
dst_mask = 0x8d;
memset(u24ary, 0x99, 65536 * sizeof(u24ary[0]));
memcpy_by_channel_mask2(u24ary, dst_mask, u24ref, src_mask, sizeof(u24ref[0]),
65536 / popcount(dst_mask));
memcpy_to_i16_from_p24((int16_t*)u16ary, (uint8_t*)u24ary, 65536);
EXPECT_EQ(nonZeroMono16((int16_t*)u16ary, 65530), 0);
// Test when dst_mask is 0. Nothing should be copied.
src_mask = 0;
dst_mask = 0;
memset(u24ary, 0, 65536 * sizeof(u24ary[0]));
memcpy_by_channel_mask2(u24ary, dst_mask, u24ref, src_mask, sizeof(u24ref[0]),
65536);
memcpy_to_i16_from_p24((int16_t*)u16ary, (uint8_t*)u24ary, 65536);
EXPECT_EQ(nonZeroMono16((int16_t*)u16ary, 65530), 0);
// Test when masks are the same. One to one copy.
src_mask = dst_mask = 0x8d;
memset(u24ary, 0x99, 65536 * sizeof(u24ary[0]));
memcpy_by_channel_mask2(u24ary, dst_mask, u24ref, src_mask, sizeof(u24ref[0]), 555);
EXPECT_EQ(memcmp(u24ary, u24ref, 555 * sizeof(u24ref[0]) * popcount(dst_mask)), 0);
// Test with a gap in source:
// Input 3 samples, output 4 samples, one zero inserted.
src_mask = 0x8c;
dst_mask = 0x8d;
memset(u24ary, 0x9, 65536 * sizeof(u24ary[0]));
memcpy_by_channel_mask2(u24ary, dst_mask, u24ref, src_mask, sizeof(u24ref[0]),
65536 / popcount(dst_mask));
memcpy_to_i16_from_p24((int16_t*)u16ary, (uint8_t*)u24ary, 65536);
checkMonotoneOrZero(u16ary, 65536);
EXPECT_EQ(nonZeroMono16((int16_t*)u16ary, 65536), 65536 * 3 / 4 - 1);
// Test with a gap in destination:
// Input 4 samples, output 3 samples, one deleted
src_mask = 0x8d;
dst_mask = 0x8c;
memset(u24ary, 0x9, 65536 * sizeof(u24ary[0]));
memcpy_by_channel_mask2(u24ary, dst_mask, u24ref, src_mask, sizeof(u24ref[0]),
65536 / popcount(src_mask));
memcpy_to_i16_from_p24((int16_t*)u16ary, (uint8_t*)u24ary, 65536);
checkMonotone(u16ary, 65536 * 3 / 4);
delete[] u16ref;
delete[] u16ary;
delete[] u24ref;
delete[] u24ary;
}
