19 #ifndef AVCODEC_MPEGAUDIODSP_H 20 #define AVCODEC_MPEGAUDIODSP_H 29 int *dither_state,
float *
samples,
32 int *dither_state, int16_t *
samples,
38 int count,
int switch_point,
int block_type);
40 int count,
int switch_point,
int block_type);
51 int32_t *synth_buf_ptr,
int *synth_buf_offset,
53 int16_t *
samples, ptrdiff_t incr,
57 float *synth_buf_ptr,
int *synth_buf_offset,
58 float *
window,
int *dither_state,
74 int *dither_state,
float *
samples,
77 int *dither_state, int16_t *
samples,
81 int count,
int switch_point,
int block_type);
84 int count,
int switch_point,
int block_type);
87 #define MDCT_BUF_SIZE FFALIGN(36, 2*4) int32_t ff_mpa_synth_window_fixed[]
float ff_mdct_win_float[8][MDCT_BUF_SIZE]
const int32_t ff_mpa_enwindow[257]
void ff_mpa_synth_filter_fixed(MPADSPContext *s, int32_t *synth_buf_ptr, int *synth_buf_offset, int32_t *window, int *dither_state, int16_t *samples, ptrdiff_t incr, int32_t *sb_samples)
void ff_mpadsp_init_x86(MPADSPContext *s)
void ff_mpadsp_apply_window_float(float *synth_buf, float *window, int *dither_state, float *samples, ptrdiff_t incr)
void(* apply_window_float)(float *synth_buf, float *window, int *dither_state, float *samples, ptrdiff_t incr)
void ff_imdct36_blocks_fixed(int *out, int *buf, int *in, int count, int switch_point, int block_type)
void ff_imdct36_blocks_float(float *out, float *buf, float *in, int count, int switch_point, int block_type)
void ff_mpadsp_init_aarch64(MPADSPContext *s)
static SDL_Window * window
void ff_mpa_synth_init_fixed(void)
typedef void(APIENTRY *FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
#define MDCT_BUF_SIZE
For SSE implementation, MDCT_BUF_SIZE/2 should be 128-bit aligned.
void(* imdct36_blocks_float)(float *out, float *buf, float *in, int count, int switch_point, int block_type)
void ff_mpadsp_init_ppc(MPADSPContext *s)
float ff_mpa_synth_window_float[]
void ff_mpadsp_init_mipsfpu(MPADSPContext *s)
void ff_mpadsp_init_mipsdsp(MPADSPContext *s)
void ff_mpadsp_apply_window_fixed(int32_t *synth_buf, int32_t *window, int *dither_state, int16_t *samples, ptrdiff_t incr)
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(const int16_t *) pi >> 8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(const int32_t *) pi >> 24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31))))#define SET_CONV_FUNC_GROUP(ofmt, ifmt) static void set_generic_function(AudioConvert *ac){}void ff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, int sample_rate, int apply_map){AudioConvert *ac;int in_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) return NULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method!=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt) > 2){ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc){av_free(ac);return NULL;}return ac;}in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar){ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar?ac->channels:1;}else if(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;else ac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);return ac;}int ff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){int use_generic=1;int len=in->nb_samples;int p;if(ac->dc){av_log(ac->avr, AV_LOG_TRACE,"%d samples - audio_convert: %s to %s (dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> in
void(* dct32_float)(float *dst, const float *src)
int ff_mdct_win_fixed[8][MDCT_BUF_SIZE]
void ff_mpa_synth_filter_float(MPADSPContext *s, float *synth_buf_ptr, int *synth_buf_offset, float *window, int *dither_state, float *samples, ptrdiff_t incr, float *sb_samples)
void ff_mpa_synth_init_float(void)
void ff_mpadsp_init_x86_tabs(void)
void(* dct32_fixed)(int *dst, const int *src)
common internal and external API header
void(* apply_window_fixed)(int32_t *synth_buf, int32_t *window, int *dither_state, int16_t *samples, ptrdiff_t incr)
void ff_mpadsp_init(MPADSPContext *s)
void ff_mpadsp_init_arm(MPADSPContext *s)
Filter the word “frame” indicates either a video frame or a group of audio samples
void(* imdct36_blocks_fixed)(int *out, int *buf, int *in, int count, int switch_point, int block_type)