generic-library/ffmpeg
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Template alsa reordering functions.

Browse Source
This commit is contained in:
Carl Eugen Hoyos
2011-04-05 10:15:03 +02:00
parent 9c09dead87
commit efec2d7b35
1 changed files with 37 additions and 32 deletions
Download Patch File Download Diff File Expand all files Collapse all files

69
libavdevice/alsa-audio-common.c
View File

@@ -43,41 +43,46 @@ static av_cold snd_pcm_format_t codec_id_to_pcm_format(int codec_id)
} }
} }
static void alsa_reorder_s16_out_51(const void *in_v, void *out_v, int n) #define REORDER_OUT_51(NAME, TYPE) \
{ static void alsa_reorder_ ## NAME ## _out_51(const void *in_v, void *out_v, int n) \
const int16_t *in = in_v; { \
int16_t *out = out_v; const TYPE *in = in_v; \
TYPE * out = out_v; \
while (n-- > 0) { \
out[0] = in[0]; while (n-- > 0) { \
out[1] = in[1]; out[0] = in[0]; \
out[2] = in[4]; out[1] = in[1]; \
out[3] = in[5]; out[2] = in[4]; \
out[4] = in[2]; out[3] = in[5]; \
out[5] = in[3]; out[4] = in[2]; \
in += 6; out[5] = in[3]; \
out += 6; in += 6; \
} out += 6; \
} \
} }
static void alsa_reorder_s16_out_71(const void *in_v, void *out_v, int n) #define REORDER_OUT_71(NAME, TYPE) \
{ static void alsa_reorder_ ## NAME ## _out_71(const void *in_v, void *out_v, int n) \
const int16_t *in = in_v; { \
int16_t *out = out_v; const TYPE *in = in_v; \
TYPE * out = out_v; \
\
while (n-- > 0) { \
out[0] = in[0]; \
out[1] = in[1]; \
out[2] = in[4]; \
out[3] = in[5]; \
out[4] = in[2]; \
out[5] = in[3]; \
out[6] = in[6]; \
out[7] = in[7]; \
in += 8; \
out += 8; \
} \
}
while (n-- > 0) { REORDER_OUT_51(s16, int16_t)
out[0] = in[0]; REORDER_OUT_71(s16, int16_t)
out[1] = in[1];
out[2] = in[4];
out[3] = in[5];
out[4] = in[2];
out[5] = in[3];
out[6] = in[6];
out[7] = in[7];
in += 8;
out += 8;
}
}
#define REORDER_DUMMY ((void *)1) #define REORDER_DUMMY ((void *)1)