示例#1
0
av_cold int swri_rematrix_init(SwrContext *s){
    int i, j;
    int nb_in  = av_get_channel_layout_nb_channels(s->in_ch_layout);
    int nb_out = av_get_channel_layout_nb_channels(s->out_ch_layout);

    s->mix_any_f = NULL;

    if (!s->rematrix_custom) {
        int r = auto_matrix(s);
        if (r)
            return r;
    }
    if (s->midbuf.fmt == AV_SAMPLE_FMT_S16P){
        s->native_matrix = av_mallocz(nb_in * nb_out * sizeof(int));
        s->native_one    = av_mallocz(sizeof(int));
        for (i = 0; i < nb_out; i++)
            for (j = 0; j < nb_in; j++)
                ((int*)s->native_matrix)[i * nb_in + j] = lrintf(s->matrix[i][j] * 32768);
        *((int*)s->native_one) = 32768;
        s->mix_1_1_f = (mix_1_1_func_type*)copy_s16;
        s->mix_2_1_f = (mix_2_1_func_type*)sum2_s16;
        s->mix_any_f = (mix_any_func_type*)get_mix_any_func_s16(s);
    }else if(s->midbuf.fmt == AV_SAMPLE_FMT_FLTP){
        s->native_matrix = av_mallocz(nb_in * nb_out * sizeof(float));
        s->native_one    = av_mallocz(sizeof(float));
        for (i = 0; i < nb_out; i++)
            for (j = 0; j < nb_in; j++)
                ((float*)s->native_matrix)[i * nb_in + j] = s->matrix[i][j];
        *((float*)s->native_one) = 1.0;
        s->mix_1_1_f = (mix_1_1_func_type*)copy_float;
        s->mix_2_1_f = (mix_2_1_func_type*)sum2_float;
        s->mix_any_f = (mix_any_func_type*)get_mix_any_func_float(s);
    }else if(s->midbuf.fmt == AV_SAMPLE_FMT_DBLP){
        s->native_matrix = av_mallocz(nb_in * nb_out * sizeof(double));
        s->native_one    = av_mallocz(sizeof(double));
        for (i = 0; i < nb_out; i++)
            for (j = 0; j < nb_in; j++)
                ((double*)s->native_matrix)[i * nb_in + j] = s->matrix[i][j];
        *((double*)s->native_one) = 1.0;
        s->mix_1_1_f = (mix_1_1_func_type*)copy_double;
        s->mix_2_1_f = (mix_2_1_func_type*)sum2_double;
        s->mix_any_f = (mix_any_func_type*)get_mix_any_func_double(s);
    }else
        av_assert0(0);
    //FIXME quantize for integeres
    for (i = 0; i < SWR_CH_MAX; i++) {
        int ch_in=0;
        for (j = 0; j < SWR_CH_MAX; j++) {
            s->matrix32[i][j]= lrintf(s->matrix[i][j] * 32768);
            if(s->matrix[i][j])
                s->matrix_ch[i][++ch_in]= j;
        }
        s->matrix_ch[i][0]= ch_in;
    }

    if(HAVE_YASM && HAVE_MMX) swri_rematrix_init_x86(s);

    return 0;
}
示例#2
0
文件: rematrix.c 项目: Emerica/FFmpeg
av_cold int swri_rematrix_init(SwrContext *s){
    int i, j;
    int nb_in  = av_get_channel_layout_nb_channels(s->in_ch_layout);
    int nb_out = av_get_channel_layout_nb_channels(s->out_ch_layout);

    s->mix_any_f = NULL;

    if (!s->rematrix_custom) {
        int r = auto_matrix(s);
        if (r)
            return r;
    }
    if (s->midbuf.fmt == AV_SAMPLE_FMT_S16P){
        int maxsum = 0;
        s->native_matrix = av_calloc(nb_in * nb_out, sizeof(int));
        s->native_one    = av_mallocz(sizeof(int));
        if (!s->native_matrix || !s->native_one)
            return AVERROR(ENOMEM);
        for (i = 0; i < nb_out; i++) {
            double rem = 0;
            int sum = 0;

            for (j = 0; j < nb_in; j++) {
                double target = s->matrix[i][j] * 32768 + rem;
                ((int*)s->native_matrix)[i * nb_in + j] = lrintf(target);
                rem += target - ((int*)s->native_matrix)[i * nb_in + j];
                sum += FFABS(((int*)s->native_matrix)[i * nb_in + j]);
            }
            maxsum = FFMAX(maxsum, sum);
        }
        *((int*)s->native_one) = 32768;
        if (maxsum <= 32768) {
            s->mix_1_1_f = (mix_1_1_func_type*)copy_s16;
            s->mix_2_1_f = (mix_2_1_func_type*)sum2_s16;
            s->mix_any_f = (mix_any_func_type*)get_mix_any_func_s16(s);
        } else {
            s->mix_1_1_f = (mix_1_1_func_type*)copy_clip_s16;
            s->mix_2_1_f = (mix_2_1_func_type*)sum2_clip_s16;
            s->mix_any_f = (mix_any_func_type*)get_mix_any_func_clip_s16(s);
        }
    }else if(s->midbuf.fmt == AV_SAMPLE_FMT_FLTP){
        s->native_matrix = av_calloc(nb_in * nb_out, sizeof(float));
        s->native_one    = av_mallocz(sizeof(float));
        if (!s->native_matrix || !s->native_one)
            return AVERROR(ENOMEM);
        for (i = 0; i < nb_out; i++)
            for (j = 0; j < nb_in; j++)
                ((float*)s->native_matrix)[i * nb_in + j] = s->matrix[i][j];
        *((float*)s->native_one) = 1.0;
        s->mix_1_1_f = (mix_1_1_func_type*)copy_float;
        s->mix_2_1_f = (mix_2_1_func_type*)sum2_float;
        s->mix_any_f = (mix_any_func_type*)get_mix_any_func_float(s);
    }else if(s->midbuf.fmt == AV_SAMPLE_FMT_DBLP){
        s->native_matrix = av_calloc(nb_in * nb_out, sizeof(double));
        s->native_one    = av_mallocz(sizeof(double));
        if (!s->native_matrix || !s->native_one)
            return AVERROR(ENOMEM);
        for (i = 0; i < nb_out; i++)
            for (j = 0; j < nb_in; j++)
                ((double*)s->native_matrix)[i * nb_in + j] = s->matrix[i][j];
        *((double*)s->native_one) = 1.0;
        s->mix_1_1_f = (mix_1_1_func_type*)copy_double;
        s->mix_2_1_f = (mix_2_1_func_type*)sum2_double;
        s->mix_any_f = (mix_any_func_type*)get_mix_any_func_double(s);
    }else if(s->midbuf.fmt == AV_SAMPLE_FMT_S32P){
        s->native_one    = av_mallocz(sizeof(int));
        if (!s->native_one)
            return AVERROR(ENOMEM);
        s->native_matrix = av_calloc(nb_in * nb_out, sizeof(int));
        if (!s->native_matrix) {
            av_freep(&s->native_one);
            return AVERROR(ENOMEM);
        }
        for (i = 0; i < nb_out; i++) {
            double rem = 0;

            for (j = 0; j < nb_in; j++) {
                double target = s->matrix[i][j] * 32768 + rem;
                ((int*)s->native_matrix)[i * nb_in + j] = lrintf(target);
                rem += target - ((int*)s->native_matrix)[i * nb_in + j];
            }
        }
        *((int*)s->native_one) = 32768;
        s->mix_1_1_f = (mix_1_1_func_type*)copy_s32;
        s->mix_2_1_f = (mix_2_1_func_type*)sum2_s32;
        s->mix_any_f = (mix_any_func_type*)get_mix_any_func_s32(s);
    }else
        av_assert0(0);
    //FIXME quantize for integeres
    for (i = 0; i < SWR_CH_MAX; i++) {
        int ch_in=0;
        for (j = 0; j < SWR_CH_MAX; j++) {
            s->matrix32[i][j]= lrintf(s->matrix[i][j] * 32768);
            if(s->matrix[i][j])
                s->matrix_ch[i][++ch_in]= j;
        }
        s->matrix_ch[i][0]= ch_in;
    }

    if(HAVE_X86ASM && HAVE_MMX)
        return swri_rematrix_init_x86(s);

    return 0;
}