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lavr: use 8.8 instead of 10.6 as the 16-bit fixed-point mixing coeff type

This commit is contained in:
Justin Ruggles 2012-04-26 16:02:37 -04:00
parent f1ffb01ee9
commit 4010d724e1
7 changed files with 18 additions and 15 deletions
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3
doc/APIchanges
View File

@ -13,6 +13,9 @@ libavutil: 2011-04-18
API changes, most recent first:
2012-xx-xx - xxxxxxx - lavr 0.0.1
Change AV_MIX_COEFF_TYPE_Q6 to AV_MIX_COEFF_TYPE_Q8.
2012-04-25 - 3527a73 - lavu 51.29.0 - cpu.h
Add av_parse_cpu_flags()

10
libavresample/audio_mix.c
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@ -27,7 +27,7 @@
#include "audio_data.h"
#include "audio_mix.h"
static const char *coeff_type_names[] = { "q6", "q15", "flt" };
static const char *coeff_type_names[] = { "q8", "q15", "flt" };
void ff_audio_mix_set_func(AudioMix *am, enum AVSampleFormat fmt,
enum AVMixCoeffType coeff_type, int in_channels,
@ -89,7 +89,7 @@ static void MIX_FUNC_NAME(fmt, cfmt)(stype **samples, ctype **matrix, \
MIX_FUNC_GENERIC(FLTP, FLT, float, float, float, sum)
MIX_FUNC_GENERIC(S16P, FLT, int16_t, float, float, av_clip_int16(lrintf(sum)))
MIX_FUNC_GENERIC(S16P, Q15, int16_t, int32_t, int64_t, av_clip_int16(sum >> 15))
MIX_FUNC_GENERIC(S16P, Q6, int16_t, int16_t, int32_t, av_clip_int16(sum >> 6))
MIX_FUNC_GENERIC(S16P, Q8, int16_t, int16_t, int32_t, av_clip_int16(sum >> 8))
/* TODO: templatize the channel-specific C functions */
@ -221,8 +221,8 @@ static int mix_function_init(AudioMix *am)
ff_audio_mix_set_func(am, AV_SAMPLE_FMT_S16P, AV_MIX_COEFF_TYPE_Q15,
0, 0, 1, 1, "C", MIX_FUNC_NAME(S16P, Q15));
ff_audio_mix_set_func(am, AV_SAMPLE_FMT_S16P, AV_MIX_COEFF_TYPE_Q6,
0, 0, 1, 1, "C", MIX_FUNC_NAME(S16P, Q6));
ff_audio_mix_set_func(am, AV_SAMPLE_FMT_S16P, AV_MIX_COEFF_TYPE_Q8,
0, 0, 1, 1, "C", MIX_FUNC_NAME(S16P, Q8));
/* channel-specific C versions */
@ -320,7 +320,7 @@ void ff_audio_mix_close(AudioMix *am)
av_free(am->matrix[0]);
am->matrix = NULL;
}
memset(am->matrix_q6, 0, sizeof(am->matrix_q6 ));
memset(am->matrix_q8, 0, sizeof(am->matrix_q8 ));
memset(am->matrix_q15, 0, sizeof(am->matrix_q15));
memset(am->matrix_flt, 0, sizeof(am->matrix_flt));
}

2
libavresample/audio_mix.h
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@ -47,7 +47,7 @@ typedef struct AudioMix {
mix_func *mix;
mix_func *mix_generic;
int16_t *matrix_q6[AVRESAMPLE_MAX_CHANNELS];
int16_t *matrix_q8[AVRESAMPLE_MAX_CHANNELS];
int32_t *matrix_q15[AVRESAMPLE_MAX_CHANNELS];
float *matrix_flt[AVRESAMPLE_MAX_CHANNELS];
void **matrix;

10
libavresample/audio_mix_matrix.c
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@ -257,14 +257,14 @@ int avresample_get_matrix(AVAudioResampleContext *avr, double *matrix,
}
switch (avr->mix_coeff_type) {
case AV_MIX_COEFF_TYPE_Q6:
if (!avr->am->matrix_q6[0]) {
case AV_MIX_COEFF_TYPE_Q8:
if (!avr->am->matrix_q8[0]) {
av_log(avr, AV_LOG_ERROR, "matrix is not set\n");
return AVERROR(EINVAL);
}
for (o = 0; o < out_channels; o++)
for (i = 0; i < in_channels; i++)
matrix[o * stride + i] = avr->am->matrix_q6[o][i] / 64.0;
matrix[o * stride + i] = avr->am->matrix_q8[o][i] / 256.0;
break;
case AV_MIX_COEFF_TYPE_Q15:
if (!avr->am->matrix_q15[0]) {
@ -325,8 +325,8 @@ int avresample_set_matrix(AVAudioResampleContext *avr, const double *matrix,
avr->am->matrix = (void **)avr->am->matrix_## type;
switch (avr->mix_coeff_type) {
case AV_MIX_COEFF_TYPE_Q6:
CONVERT_MATRIX(q6, av_clip_int16(lrint(64.0 * v)))
case AV_MIX_COEFF_TYPE_Q8:
CONVERT_MATRIX(q8, av_clip_int16(lrint(256.0 * v)))
break;
case AV_MIX_COEFF_TYPE_Q15:
CONVERT_MATRIX(q15, av_clipl_int32(llrint(32768.0 * v)))

2
libavresample/avresample.h
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@ -39,7 +39,7 @@ typedef struct AVAudioResampleContext AVAudioResampleContext;
/** Mixing Coefficient Types */
enum AVMixCoeffType {
AV_MIX_COEFF_TYPE_Q6, /** 16-bit 10.6 fixed-point */
AV_MIX_COEFF_TYPE_Q8, /** 16-bit 8.8 fixed-point */
AV_MIX_COEFF_TYPE_Q15, /** 32-bit 17.15 fixed-point */
AV_MIX_COEFF_TYPE_FLT, /** floating-point */
AV_MIX_COEFF_TYPE_NB, /** Number of coeff types. Not part of ABI */

4
libavresample/options.c
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@ -40,8 +40,8 @@ static const AVOption options[] = {
{ "out_sample_fmt", "Output Sample Format", OFFSET(out_sample_fmt), AV_OPT_TYPE_INT, { AV_SAMPLE_FMT_S16 }, AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_NB-1, PARAM },
{ "out_sample_rate", "Output Sample Rate", OFFSET(out_sample_rate), AV_OPT_TYPE_INT, { 48000 }, 1, INT_MAX, PARAM },
{ "internal_sample_fmt", "Internal Sample Format", OFFSET(internal_sample_fmt), AV_OPT_TYPE_INT, { AV_SAMPLE_FMT_FLTP }, AV_SAMPLE_FMT_NONE, AV_SAMPLE_FMT_NB-1, PARAM },
{ "mix_coeff_type", "Mixing Coefficient Type", OFFSET(mix_coeff_type), AV_OPT_TYPE_INT, { AV_MIX_COEFF_TYPE_FLT }, AV_MIX_COEFF_TYPE_Q6, AV_MIX_COEFF_TYPE_NB-1, PARAM, "mix_coeff_type" },
{ "q6", "16-bit 10.6 Fixed-Point", 0, AV_OPT_TYPE_CONST, { AV_MIX_COEFF_TYPE_Q6 }, INT_MIN, INT_MAX, PARAM, "mix_coeff_type" },
{ "mix_coeff_type", "Mixing Coefficient Type", OFFSET(mix_coeff_type), AV_OPT_TYPE_INT, { AV_MIX_COEFF_TYPE_FLT }, AV_MIX_COEFF_TYPE_Q8, AV_MIX_COEFF_TYPE_NB-1, PARAM, "mix_coeff_type" },
{ "q8", "16-bit 8.8 Fixed-Point", 0, AV_OPT_TYPE_CONST, { AV_MIX_COEFF_TYPE_Q8 }, INT_MIN, INT_MAX, PARAM, "mix_coeff_type" },
{ "q15", "32-bit 17.15 Fixed-Point", 0, AV_OPT_TYPE_CONST, { AV_MIX_COEFF_TYPE_Q15 }, INT_MIN, INT_MAX, PARAM, "mix_coeff_type" },
{ "flt", "Floating-Point", 0, AV_OPT_TYPE_CONST, { AV_MIX_COEFF_TYPE_FLT }, INT_MIN, INT_MAX, PARAM, "mix_coeff_type" },
{ "center_mix_level", "Center Mix Level", OFFSET(center_mix_level), AV_OPT_TYPE_DOUBLE, { M_SQRT1_2 }, -32.0, 32.0, PARAM },

2
libavresample/version.h
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@ -21,7 +21,7 @@
#define LIBAVRESAMPLE_VERSION_MAJOR 0
#define LIBAVRESAMPLE_VERSION_MINOR 0
#define LIBAVRESAMPLE_VERSION_MICRO 0
#define LIBAVRESAMPLE_VERSION_MICRO 1
#define LIBAVRESAMPLE_VERSION_INT AV_VERSION_INT(LIBAVRESAMPLE_VERSION_MAJOR, \
LIBAVRESAMPLE_VERSION_MINOR, \