static BOOL tsmf_ffmpeg_init_audio_stream(ITSMFDecoder* decoder, const TS_AM_MEDIA_TYPE *media_type) { TSMFFFmpegDecoder* mdecoder = (TSMFFFmpegDecoder*) decoder; mdecoder->codec_context->sample_rate = media_type->SamplesPerSecond.Numerator; mdecoder->codec_context->bit_rate = media_type->BitRate; mdecoder->codec_context->channels = media_type->Channels; mdecoder->codec_context->block_align = media_type->BlockAlign; #if LIBAVCODEC_VERSION_MAJOR < 55 #ifdef AV_CPU_FLAG_SSE2 mdecoder->codec_context->dsp_mask = AV_CPU_FLAG_SSE2 | AV_CPU_FLAG_MMX2; #else #if LIBAVCODEC_VERSION_MAJOR < 53 mdecoder->codec_context->dsp_mask = FF_MM_SSE2 | FF_MM_MMXEXT; #else mdecoder->codec_context->dsp_mask = FF_MM_SSE2 | FF_MM_MMX2; #endif #endif #else /* LIBAVCODEC_VERSION_MAJOR < 55 */ #ifdef AV_CPU_FLAG_SSE2 av_set_cpu_flags_mask(AV_CPU_FLAG_SSE2 | AV_CPU_FLAG_MMX2); #else av_set_cpu_flags_mask(FF_MM_SSE2 | FF_MM_MMX2); #endif #endif /* LIBAVCODEC_VERSION_MAJOR < 55 */ return TRUE; }
/***************************************************************************** * OpenDecoder: probe the decoder and return score *****************************************************************************/ static int OpenDecoder( vlc_object_t *p_this ) { decoder_t *p_dec = (decoder_t*) p_this; unsigned i_codec_id; int i_cat, i_result; const char *psz_namecodec; AVCodecContext *p_context = NULL; AVCodec *p_codec = NULL; /* *** determine codec type *** */ if( !GetFfmpegCodec( p_dec->fmt_in.i_codec, &i_cat, &i_codec_id, &psz_namecodec ) ) { return VLC_EGENERIC; } /* Initialization must be done before avcodec_find_decoder() */ vlc_init_avcodec(); /* *** ask ffmpeg for a decoder *** */ char *psz_decoder = var_CreateGetString( p_this, "avcodec-codec" ); if( psz_decoder && *psz_decoder ) { p_codec = avcodec_find_decoder_by_name( psz_decoder ); if( !p_codec ) msg_Err( p_this, "Decoder `%s' not found", psz_decoder ); else if( p_codec->id != i_codec_id ) { msg_Err( p_this, "Decoder `%s' can't handle %4.4s", psz_decoder, (char*)&p_dec->fmt_in.i_codec ); p_codec = NULL; } } free( psz_decoder ); if( !p_codec ) p_codec = avcodec_find_decoder( i_codec_id ); if( !p_codec ) { msg_Dbg( p_dec, "codec not found (%s)", psz_namecodec ); return VLC_EGENERIC; } /* *** get a p_context *** */ p_context = avcodec_alloc_context3(p_codec); if( !p_context ) return VLC_ENOMEM; p_context->debug = var_InheritInteger( p_dec, "avcodec-debug" ); p_context->opaque = (void *)p_this; /* set CPU capabilities */ #if LIBAVUTIL_VERSION_CHECK(51, 25, 0, 42, 100) av_set_cpu_flags_mask( INT_MAX & ~GetVlcDspMask() ); #else p_context->dsp_mask = GetVlcDspMask(); #endif p_dec->b_need_packetized = true; switch( i_cat ) { case VIDEO_ES: p_dec->pf_decode_video = DecodeVideo; i_result = InitVideoDec ( p_dec, p_context, p_codec, i_codec_id, psz_namecodec ); break; case AUDIO_ES: p_dec->pf_decode_audio = DecodeAudio; i_result = InitAudioDec ( p_dec, p_context, p_codec, i_codec_id, psz_namecodec ); break; case SPU_ES: p_dec->pf_decode_sub = DecodeSubtitle; i_result = InitSubtitleDec( p_dec, p_context, p_codec, i_codec_id, psz_namecodec ); break; default: i_result = VLC_EGENERIC; } if( i_result == VLC_SUCCESS ) { p_dec->p_sys->i_cat = i_cat; if( p_context->profile != FF_PROFILE_UNKNOWN) p_dec->fmt_in.i_profile = p_context->profile; if( p_context->level != FF_LEVEL_UNKNOWN) p_dec->fmt_in.i_level = p_context->level; } return i_result; }
int main(int argc, char **argv) { FFTComplex *tab, *tab1, *tab_ref; FFTSample *tab2; int it, i, c; int cpuflags; int do_speed = 0; int err = 1; enum tf_transform transform = TRANSFORM_FFT; int do_inverse = 0; FFTContext s1, *s = &s1; FFTContext m1, *m = &m1; #if FFT_FLOAT RDFTContext r1, *r = &r1; DCTContext d1, *d = &d1; int fft_size_2; #endif int fft_nbits, fft_size; double scale = 1.0; AVLFG prng; av_lfg_init(&prng, 1); fft_nbits = 9; for(;;) { c = getopt(argc, argv, "hsimrdn:f:c:"); if (c == -1) break; switch(c) { case 'h': help(); return 1; case 's': do_speed = 1; break; case 'i': do_inverse = 1; break; case 'm': transform = TRANSFORM_MDCT; break; case 'r': transform = TRANSFORM_RDFT; break; case 'd': transform = TRANSFORM_DCT; break; case 'n': fft_nbits = atoi(optarg); break; case 'f': scale = atof(optarg); break; case 'c': cpuflags = av_parse_cpu_flags(optarg); if (cpuflags < 0) return 1; av_set_cpu_flags_mask(cpuflags); break; } } fft_size = 1 << fft_nbits; tab = av_malloc(fft_size * sizeof(FFTComplex)); tab1 = av_malloc(fft_size * sizeof(FFTComplex)); tab_ref = av_malloc(fft_size * sizeof(FFTComplex)); tab2 = av_malloc(fft_size * sizeof(FFTSample)); switch (transform) { case TRANSFORM_MDCT: av_log(NULL, AV_LOG_INFO,"Scale factor is set to %f\n", scale); if (do_inverse) av_log(NULL, AV_LOG_INFO,"IMDCT"); else av_log(NULL, AV_LOG_INFO,"MDCT"); ff_mdct_init(m, fft_nbits, do_inverse, scale); break; case TRANSFORM_FFT: if (do_inverse) av_log(NULL, AV_LOG_INFO,"IFFT"); else av_log(NULL, AV_LOG_INFO,"FFT"); ff_fft_init(s, fft_nbits, do_inverse); fft_ref_init(fft_nbits, do_inverse); break; #if FFT_FLOAT case TRANSFORM_RDFT: if (do_inverse) av_log(NULL, AV_LOG_INFO,"IDFT_C2R"); else av_log(NULL, AV_LOG_INFO,"DFT_R2C"); ff_rdft_init(r, fft_nbits, do_inverse ? IDFT_C2R : DFT_R2C); fft_ref_init(fft_nbits, do_inverse); break; case TRANSFORM_DCT: if (do_inverse) av_log(NULL, AV_LOG_INFO,"DCT_III"); else av_log(NULL, AV_LOG_INFO,"DCT_II"); ff_dct_init(d, fft_nbits, do_inverse ? DCT_III : DCT_II); break; #endif default: av_log(NULL, AV_LOG_ERROR, "Requested transform not supported\n"); return 1; } av_log(NULL, AV_LOG_INFO," %d test\n", fft_size); /* generate random data */ for (i = 0; i < fft_size; i++) { tab1[i].re = frandom(&prng); tab1[i].im = frandom(&prng); } /* checking result */ av_log(NULL, AV_LOG_INFO,"Checking...\n"); switch (transform) { case TRANSFORM_MDCT: if (do_inverse) { imdct_ref((FFTSample *)tab_ref, (FFTSample *)tab1, fft_nbits); m->imdct_calc(m, tab2, (FFTSample *)tab1); err = check_diff((FFTSample *)tab_ref, tab2, fft_size, scale); } else { mdct_ref((FFTSample *)tab_ref, (FFTSample *)tab1, fft_nbits); m->mdct_calc(m, tab2, (FFTSample *)tab1); err = check_diff((FFTSample *)tab_ref, tab2, fft_size / 2, scale); } break; case TRANSFORM_FFT: memcpy(tab, tab1, fft_size * sizeof(FFTComplex)); s->fft_permute(s, tab); s->fft_calc(s, tab); fft_ref(tab_ref, tab1, fft_nbits); err = check_diff((FFTSample *)tab_ref, (FFTSample *)tab, fft_size * 2, 1.0); break; #if FFT_FLOAT case TRANSFORM_RDFT: fft_size_2 = fft_size >> 1; if (do_inverse) { tab1[ 0].im = 0; tab1[fft_size_2].im = 0; for (i = 1; i < fft_size_2; i++) { tab1[fft_size_2+i].re = tab1[fft_size_2-i].re; tab1[fft_size_2+i].im = -tab1[fft_size_2-i].im; } memcpy(tab2, tab1, fft_size * sizeof(FFTSample)); tab2[1] = tab1[fft_size_2].re; r->rdft_calc(r, tab2); fft_ref(tab_ref, tab1, fft_nbits); for (i = 0; i < fft_size; i++) { tab[i].re = tab2[i]; tab[i].im = 0; } err = check_diff((float *)tab_ref, (float *)tab, fft_size * 2, 0.5); } else { for (i = 0; i < fft_size; i++) { tab2[i] = tab1[i].re; tab1[i].im = 0; } r->rdft_calc(r, tab2); fft_ref(tab_ref, tab1, fft_nbits); tab_ref[0].im = tab_ref[fft_size_2].re; err = check_diff((float *)tab_ref, (float *)tab2, fft_size, 1.0); } break; case TRANSFORM_DCT: memcpy(tab, tab1, fft_size * sizeof(FFTComplex)); d->dct_calc(d, tab); if (do_inverse) { idct_ref(tab_ref, tab1, fft_nbits); } else { dct_ref(tab_ref, tab1, fft_nbits); } err = check_diff((float *)tab_ref, (float *)tab, fft_size, 1.0); break; #endif } /* do a speed test */ if (do_speed) { int64_t time_start, duration; int nb_its; av_log(NULL, AV_LOG_INFO,"Speed test...\n"); /* we measure during about 1 seconds */ nb_its = 1; for(;;) { time_start = av_gettime(); for (it = 0; it < nb_its; it++) { switch (transform) { case TRANSFORM_MDCT: if (do_inverse) { m->imdct_calc(m, (FFTSample *)tab, (FFTSample *)tab1); } else { m->mdct_calc(m, (FFTSample *)tab, (FFTSample *)tab1); } break; case TRANSFORM_FFT: memcpy(tab, tab1, fft_size * sizeof(FFTComplex)); s->fft_calc(s, tab); break; #if FFT_FLOAT case TRANSFORM_RDFT: memcpy(tab2, tab1, fft_size * sizeof(FFTSample)); r->rdft_calc(r, tab2); break; case TRANSFORM_DCT: memcpy(tab2, tab1, fft_size * sizeof(FFTSample)); d->dct_calc(d, tab2); break; #endif } } duration = av_gettime() - time_start; if (duration >= 1000000) break; nb_its *= 2; } av_log(NULL, AV_LOG_INFO,"time: %0.1f us/transform [total time=%0.2f s its=%d]\n", (double)duration / nb_its, (double)duration / 1000000.0, nb_its); } switch (transform) { case TRANSFORM_MDCT: ff_mdct_end(m); break; case TRANSFORM_FFT: ff_fft_end(s); break; #if FFT_FLOAT case TRANSFORM_RDFT: ff_rdft_end(r); break; case TRANSFORM_DCT: ff_dct_end(d); break; #endif } av_free(tab); av_free(tab1); av_free(tab2); av_free(tab_ref); av_free(exptab); if (err) printf("Error: %d.\n", err); return !!err; }
int main(int argc, char **argv) { FFTComplex *tab, *tab1, *tab_ref; FFTSample *tab2; enum tf_transform transform = TRANSFORM_FFT; FFTContext m, s; #if FFT_FLOAT RDFTContext r; DCTContext d; #endif /* FFT_FLOAT */ int it, i, err = 1; int do_speed = 0, do_inverse = 0; int fft_nbits = 9, fft_size; double scale = 1.0; AVLFG prng; av_lfg_init(&prng, 1); for (;;) { int c = getopt(argc, argv, "hsimrdn:f:c:"); if (c == -1) break; switch (c) { case 'h': help(); return 1; case 's': do_speed = 1; break; case 'i': do_inverse = 1; break; case 'm': transform = TRANSFORM_MDCT; break; case 'r': transform = TRANSFORM_RDFT; break; case 'd': transform = TRANSFORM_DCT; break; case 'n': fft_nbits = atoi(optarg); break; case 'f': scale = atof(optarg); break; case 'c': { int cpuflags = av_parse_cpu_flags(optarg); if (cpuflags < 0) return 1; av_set_cpu_flags_mask(cpuflags); break; } } } fft_size = 1 << fft_nbits; tab = av_malloc(fft_size * sizeof(FFTComplex)); tab1 = av_malloc(fft_size * sizeof(FFTComplex)); tab_ref = av_malloc(fft_size * sizeof(FFTComplex)); tab2 = av_malloc(fft_size * sizeof(FFTSample)); if (!(tab && tab1 && tab_ref && tab2)) goto cleanup; switch (transform) { #if CONFIG_MDCT case TRANSFORM_MDCT: av_log(NULL, AV_LOG_INFO, "Scale factor is set to %f\n", scale); if (do_inverse) av_log(NULL, AV_LOG_INFO, "IMDCT"); else av_log(NULL, AV_LOG_INFO, "MDCT"); ff_mdct_init(&m, fft_nbits, do_inverse, scale); break; #endif /* CONFIG_MDCT */ case TRANSFORM_FFT: if (do_inverse) av_log(NULL, AV_LOG_INFO, "IFFT"); else av_log(NULL, AV_LOG_INFO, "FFT"); ff_fft_init(&s, fft_nbits, do_inverse); if (err = fft_ref_init(fft_nbits, do_inverse) < 0) goto cleanup; break; #if FFT_FLOAT #if CONFIG_RDFT case TRANSFORM_RDFT: if (do_inverse) av_log(NULL, AV_LOG_INFO, "IDFT_C2R"); else av_log(NULL, AV_LOG_INFO, "DFT_R2C"); ff_rdft_init(&r, fft_nbits, do_inverse ? IDFT_C2R : DFT_R2C); if (err = fft_ref_init(fft_nbits, do_inverse) < 0) goto cleanup; break; #endif /* CONFIG_RDFT */ #if CONFIG_DCT case TRANSFORM_DCT: if (do_inverse) av_log(NULL, AV_LOG_INFO, "DCT_III"); else av_log(NULL, AV_LOG_INFO, "DCT_II"); ff_dct_init(&d, fft_nbits, do_inverse ? DCT_III : DCT_II); break; #endif /* CONFIG_DCT */ #endif /* FFT_FLOAT */ default: av_log(NULL, AV_LOG_ERROR, "Requested transform not supported\n"); goto cleanup; } av_log(NULL, AV_LOG_INFO, " %d test\n", fft_size); /* generate random data */ for (i = 0; i < fft_size; i++) { tab1[i].re = frandom(&prng); tab1[i].im = frandom(&prng); } /* checking result */ av_log(NULL, AV_LOG_INFO, "Checking...\n"); switch (transform) { #if CONFIG_MDCT case TRANSFORM_MDCT: if (do_inverse) { imdct_ref(&tab_ref->re, &tab1->re, fft_nbits); m.imdct_calc(&m, tab2, &tab1->re); err = check_diff(&tab_ref->re, tab2, fft_size, scale); } else { mdct_ref(&tab_ref->re, &tab1->re, fft_nbits); m.mdct_calc(&m, tab2, &tab1->re); err = check_diff(&tab_ref->re, tab2, fft_size / 2, scale); } break; #endif /* CONFIG_MDCT */ case TRANSFORM_FFT: memcpy(tab, tab1, fft_size * sizeof(FFTComplex)); s.fft_permute(&s, tab); s.fft_calc(&s, tab); fft_ref(tab_ref, tab1, fft_nbits); err = check_diff(&tab_ref->re, &tab->re, fft_size * 2, 1.0); break; #if FFT_FLOAT #if CONFIG_RDFT case TRANSFORM_RDFT: { int fft_size_2 = fft_size >> 1; if (do_inverse) { tab1[0].im = 0; tab1[fft_size_2].im = 0; for (i = 1; i < fft_size_2; i++) { tab1[fft_size_2 + i].re = tab1[fft_size_2 - i].re; tab1[fft_size_2 + i].im = -tab1[fft_size_2 - i].im; } memcpy(tab2, tab1, fft_size * sizeof(FFTSample)); tab2[1] = tab1[fft_size_2].re; r.rdft_calc(&r, tab2); fft_ref(tab_ref, tab1, fft_nbits); for (i = 0; i < fft_size; i++) { tab[i].re = tab2[i]; tab[i].im = 0; } err = check_diff(&tab_ref->re, &tab->re, fft_size * 2, 0.5); } else { for (i = 0; i < fft_size; i++) { tab2[i] = tab1[i].re; tab1[i].im = 0; } r.rdft_calc(&r, tab2); fft_ref(tab_ref, tab1, fft_nbits); tab_ref[0].im = tab_ref[fft_size_2].re; err = check_diff(&tab_ref->re, tab2, fft_size, 1.0); } break; } #endif /* CONFIG_RDFT */ #if CONFIG_DCT case TRANSFORM_DCT: memcpy(tab, tab1, fft_size * sizeof(FFTComplex)); d.dct_calc(&d, &tab->re); if (do_inverse) idct_ref(&tab_ref->re, &tab1->re, fft_nbits); else dct_ref(&tab_ref->re, &tab1->re, fft_nbits); err = check_diff(&tab_ref->re, &tab->re, fft_size, 1.0); break; #endif /* CONFIG_DCT */ #endif /* FFT_FLOAT */ } /* do a speed test */ if (do_speed) { int64_t time_start, duration; int nb_its; av_log(NULL, AV_LOG_INFO, "Speed test...\n"); /* we measure during about 1 seconds */ nb_its = 1; for (;;) { time_start = av_gettime_relative(); for (it = 0; it < nb_its; it++) { switch (transform) { case TRANSFORM_MDCT: if (do_inverse) m.imdct_calc(&m, &tab->re, &tab1->re); else m.mdct_calc(&m, &tab->re, &tab1->re); break; case TRANSFORM_FFT: memcpy(tab, tab1, fft_size * sizeof(FFTComplex)); s.fft_calc(&s, tab); break; #if FFT_FLOAT case TRANSFORM_RDFT: memcpy(tab2, tab1, fft_size * sizeof(FFTSample)); r.rdft_calc(&r, tab2); break; case TRANSFORM_DCT: memcpy(tab2, tab1, fft_size * sizeof(FFTSample)); d.dct_calc(&d, tab2); break; #endif /* FFT_FLOAT */ } } duration = av_gettime_relative() - time_start; if (duration >= 1000000) break; nb_its *= 2; } av_log(NULL, AV_LOG_INFO, "time: %0.1f us/transform [total time=%0.2f s its=%d]\n", (double) duration / nb_its, (double) duration / 1000000.0, nb_its); } switch (transform) { #if CONFIG_MDCT case TRANSFORM_MDCT: ff_mdct_end(&m); break; #endif /* CONFIG_MDCT */ case TRANSFORM_FFT: ff_fft_end(&s); break; #if FFT_FLOAT #if CONFIG_RDFT case TRANSFORM_RDFT: ff_rdft_end(&r); break; #endif /* CONFIG_RDFT */ #if CONFIG_DCT case TRANSFORM_DCT: ff_dct_end(&d); break; #endif /* CONFIG_DCT */ #endif /* FFT_FLOAT */ } cleanup: av_free(tab); av_free(tab1); av_free(tab2); av_free(tab_ref); av_free(exptab); if (err) printf("Error: %d.\n", err); return !!err; }