Ejemplo n.º 1
0
/* table 6 */
static uint8_t sbr_channel_pair_element(bitfile *ld, sbr_info *sbr)
{
    uint8_t n, result;

    if (faad_get1bit(ld
        DEBUGVAR(1,228,"sbr_single_channel_element(): bs_data_extra")))
    {
        faad_getbits(ld, 4
            DEBUGVAR(1,228,"sbr_channel_pair_element(): bs_reserved_bits_data"));
        faad_getbits(ld, 4
            DEBUGVAR(1,228,"sbr_channel_pair_element(): bs_reserved_bits_data"));
    }

    sbr->bs_coupling = faad_get1bit(ld
        DEBUGVAR(1,228,"sbr_channel_pair_element(): bs_coupling"));

    if (sbr->bs_coupling)
    {
        if ((result = sbr_grid(ld, sbr, 0)) > 0)
            return result;

        /* need to copy some data from left to right */
        sbr->bs_frame_class[1] = sbr->bs_frame_class[0];
        sbr->L_E[1] = sbr->L_E[0];
        sbr->L_Q[1] = sbr->L_Q[0];
        sbr->bs_pointer[1] = sbr->bs_pointer[0];

        for (n = 0; n <= sbr->L_E[0]; n++)
        {
            sbr->t_E[1][n] = sbr->t_E[0][n];
            sbr->f[1][n] = sbr->f[0][n];
        }
        for (n = 0; n <= sbr->L_Q[0]; n++)
            sbr->t_Q[1][n] = sbr->t_Q[0][n];

        sbr_dtdf(ld, sbr, 0);
        sbr_dtdf(ld, sbr, 1);
        invf_mode(ld, sbr, 0);

        /* more copying */
        for (n = 0; n < sbr->N_Q; n++)
            sbr->bs_invf_mode[1][n] = sbr->bs_invf_mode[0][n];

        sbr_envelope(ld, sbr, 0);
        sbr_noise(ld, sbr, 0);
        sbr_envelope(ld, sbr, 1);
        sbr_noise(ld, sbr, 1);

        memset(sbr->bs_add_harmonic[0], 0, 64*sizeof(uint8_t));
        memset(sbr->bs_add_harmonic[1], 0, 64*sizeof(uint8_t));

        sbr->bs_add_harmonic_flag[0] = faad_get1bit(ld
            DEBUGVAR(1,231,"sbr_channel_pair_element(): bs_add_harmonic_flag[0]"));
        if (sbr->bs_add_harmonic_flag[0])
            sinusoidal_coding(ld, sbr, 0);

        sbr->bs_add_harmonic_flag[1] = faad_get1bit(ld
            DEBUGVAR(1,232,"sbr_channel_pair_element(): bs_add_harmonic_flag[1]"));
        if (sbr->bs_add_harmonic_flag[1])
            sinusoidal_coding(ld, sbr, 1);
    } else {
        if ((result = sbr_grid(ld, sbr, 0)) > 0)
            return result;
        if ((result = sbr_grid(ld, sbr, 1)) > 0)
            return result;
        sbr_dtdf(ld, sbr, 0);
        sbr_dtdf(ld, sbr, 1);
        invf_mode(ld, sbr, 0);
        invf_mode(ld, sbr, 1);
        sbr_envelope(ld, sbr, 0);
        sbr_envelope(ld, sbr, 1);
        sbr_noise(ld, sbr, 0);
        sbr_noise(ld, sbr, 1);

        memset(sbr->bs_add_harmonic[0], 0, 64*sizeof(uint8_t));
        memset(sbr->bs_add_harmonic[1], 0, 64*sizeof(uint8_t));

        sbr->bs_add_harmonic_flag[0] = faad_get1bit(ld
            DEBUGVAR(1,239,"sbr_channel_pair_element(): bs_add_harmonic_flag[0]"));
        if (sbr->bs_add_harmonic_flag[0])
            sinusoidal_coding(ld, sbr, 0);

        sbr->bs_add_harmonic_flag[1] = faad_get1bit(ld
            DEBUGVAR(1,240,"sbr_channel_pair_element(): bs_add_harmonic_flag[1]"));
        if (sbr->bs_add_harmonic_flag[1])
            sinusoidal_coding(ld, sbr, 1);
    }
    envelope_noise_dequantisation(sbr, 0);
    envelope_noise_dequantisation(sbr, 1);

    if (sbr->bs_coupling)
        unmap_envelope_noise(sbr);

    sbr->bs_extended_data = faad_get1bit(ld
        DEBUGVAR(1,233,"sbr_channel_pair_element(): bs_extended_data[0]"));
    if (sbr->bs_extended_data)
    {
        uint16_t nr_bits_left;
        uint16_t cnt = (uint16_t)faad_getbits(ld, 4
            DEBUGVAR(1,234,"sbr_channel_pair_element(): bs_extension_size"));
        if (cnt == 15)
        {
            cnt += (uint16_t)faad_getbits(ld, 8
                DEBUGVAR(1,235,"sbr_channel_pair_element(): bs_esc_count"));
        }

        nr_bits_left = 8 * cnt;
        while (nr_bits_left > 7)
        {
            sbr->bs_extension_id = (uint8_t)faad_getbits(ld, 2
                DEBUGVAR(1,236,"sbr_channel_pair_element(): bs_extension_id"));
            nr_bits_left -= 2;
            sbr_extension(ld, sbr, sbr->bs_extension_id, nr_bits_left);
        }

        /* Corrigendum */
        if (nr_bits_left > 0)
        {
            faad_getbits(ld, nr_bits_left
                DEBUGVAR(1,280,"sbr_channel_pair_element(): nr_bits_left"));
        }
    }

    return 0;
}
Ejemplo n.º 2
0
/* table 6 */
static uint8_t sbr_channel_pair_element(bitfile *ld, sbr_info *sbr)
{
    uint8_t n, result;

    if (faad_get1bit(ld
        DEBUGVAR(1,228,"sbr_single_channel_element(): bs_data_extra")))
    {
        faad_getbits(ld, 4
            DEBUGVAR(1,228,"sbr_channel_pair_element(): bs_reserved_bits_data"));
        faad_getbits(ld, 4
            DEBUGVAR(1,228,"sbr_channel_pair_element(): bs_reserved_bits_data"));
    }

    sbr->bs_coupling = faad_get1bit(ld
        DEBUGVAR(1,228,"sbr_channel_pair_element(): bs_coupling"));

    if (sbr->bs_coupling)
    {
        if ((result = sbr_grid(ld, sbr, 0)) > 0)
            return result;

        /* need to copy some data from left to right */
        sbr->bs_frame_class[1] = sbr->bs_frame_class[0];
        sbr->L_E[1] = sbr->L_E[0];
        sbr->L_Q[1] = sbr->L_Q[0];
        sbr->bs_pointer[1] = sbr->bs_pointer[0];

        for (n = 0; n <= sbr->L_E[0]; n++)
        {
            sbr->t_E[1][n] = sbr->t_E[0][n];
            sbr->f[1][n] = sbr->f[0][n];
        }
        for (n = 0; n <= sbr->L_Q[0]; n++)
            sbr->t_Q[1][n] = sbr->t_Q[0][n];

        sbr_dtdf(ld, sbr, 0);
        sbr_dtdf(ld, sbr, 1);
        invf_mode(ld, sbr, 0);

        /* more copying */
        for (n = 0; n < sbr->N_Q; n++)
            sbr->bs_invf_mode[1][n] = sbr->bs_invf_mode[0][n];

        sbr_envelope(ld, sbr, 0);
        sbr_noise(ld, sbr, 0);
        sbr_envelope(ld, sbr, 1);
        sbr_noise(ld, sbr, 1);

        memset(sbr->bs_add_harmonic[0], 0, 64*sizeof(uint8_t));
        memset(sbr->bs_add_harmonic[1], 0, 64*sizeof(uint8_t));

        sbr->bs_add_harmonic_flag[0] = faad_get1bit(ld
            DEBUGVAR(1,231,"sbr_channel_pair_element(): bs_add_harmonic_flag[0]"));
        if (sbr->bs_add_harmonic_flag[0])
            sinusoidal_coding(ld, sbr, 0);

        sbr->bs_add_harmonic_flag[1] = faad_get1bit(ld
            DEBUGVAR(1,232,"sbr_channel_pair_element(): bs_add_harmonic_flag[1]"));
        if (sbr->bs_add_harmonic_flag[1])
            sinusoidal_coding(ld, sbr, 1);
    } else {
        uint8_t saved_t_E[6] = {0}, saved_t_Q[3] = {0};
        uint8_t saved_L_E = sbr->L_E[0];
        uint8_t saved_L_Q = sbr->L_Q[0];
        uint8_t saved_frame_class = sbr->bs_frame_class[0];

        for (n = 0; n < saved_L_E; n++)
            saved_t_E[n] = sbr->t_E[0][n];
        for (n = 0; n < saved_L_Q; n++)
            saved_t_Q[n] = sbr->t_Q[0][n];

        if ((result = sbr_grid(ld, sbr, 0)) > 0)
            return result;
        if ((result = sbr_grid(ld, sbr, 1)) > 0)
        {
            /* restore first channel data as well */
            sbr->bs_frame_class[0] = saved_frame_class;
            sbr->L_E[0] = saved_L_E;
            sbr->L_Q[0] = saved_L_Q;
            for (n = 0; n < 6; n++)
                sbr->t_E[0][n] = saved_t_E[n];
            for (n = 0; n < 3; n++)
                sbr->t_Q[0][n] = saved_t_Q[n];

            return result;
        }
        sbr_dtdf(ld, sbr, 0);
        sbr_dtdf(ld, sbr, 1);
        invf_mode(ld, sbr, 0);
        invf_mode(ld, sbr, 1);
        sbr_envelope(ld, sbr, 0);
        sbr_envelope(ld, sbr, 1);
        sbr_noise(ld, sbr, 0);
        sbr_noise(ld, sbr, 1);

        memset(sbr->bs_add_harmonic[0], 0, 64*sizeof(uint8_t));
        memset(sbr->bs_add_harmonic[1], 0, 64*sizeof(uint8_t));

        sbr->bs_add_harmonic_flag[0] = faad_get1bit(ld
            DEBUGVAR(1,239,"sbr_channel_pair_element(): bs_add_harmonic_flag[0]"));
        if (sbr->bs_add_harmonic_flag[0])
            sinusoidal_coding(ld, sbr, 0);

        sbr->bs_add_harmonic_flag[1] = faad_get1bit(ld
            DEBUGVAR(1,240,"sbr_channel_pair_element(): bs_add_harmonic_flag[1]"));
        if (sbr->bs_add_harmonic_flag[1])
            sinusoidal_coding(ld, sbr, 1);
    }
#ifndef FIXED_POINT
    envelope_noise_dequantisation(sbr, 0);
    envelope_noise_dequantisation(sbr, 1);

    if (sbr->bs_coupling)
        unmap_envelope_noise(sbr);
#endif

    sbr->bs_extended_data = faad_get1bit(ld
        DEBUGVAR(1,233,"sbr_channel_pair_element(): bs_extended_data[0]"));
    if (sbr->bs_extended_data)
    {
        uint16_t nr_bits_left;
        uint16_t cnt = (uint16_t)faad_getbits(ld, 4
            DEBUGVAR(1,234,"sbr_channel_pair_element(): bs_extension_size"));
        if (cnt == 15)
        {
            cnt += (uint16_t)faad_getbits(ld, 8
                DEBUGVAR(1,235,"sbr_channel_pair_element(): bs_esc_count"));
        }

        nr_bits_left = 8 * cnt;
        while (nr_bits_left > 7)
        {
            uint16_t tmp_nr_bits = 0;

            sbr->bs_extension_id = (uint8_t)faad_getbits(ld, 2
                DEBUGVAR(1,236,"sbr_channel_pair_element(): bs_extension_id"));
            tmp_nr_bits += 2;
            tmp_nr_bits += sbr_extension(ld, sbr, sbr->bs_extension_id, nr_bits_left);

            /* check if the data read is bigger than the number of available bits */
            if (tmp_nr_bits > nr_bits_left)
                return 1;

            nr_bits_left -= tmp_nr_bits;
        }

        /* Corrigendum */
        if (nr_bits_left > 0)
        {
            faad_getbits(ld, nr_bits_left
                DEBUGVAR(1,280,"sbr_channel_pair_element(): nr_bits_left"));
        }
    }

    return 0;
}
Ejemplo n.º 3
0
/* table 5 */
static uint8_t sbr_single_channel_element(bitfile *ld, sbr_info *sbr)
{
    uint8_t result;

    if (faad_get1bit(ld
        DEBUGVAR(1,220,"sbr_single_channel_element(): bs_data_extra")))
    {
        faad_getbits(ld, 4
            DEBUGVAR(1,221,"sbr_single_channel_element(): bs_reserved_bits_data"));
    }

#ifdef DRM
    /* bs_coupling, from sbr_channel_pair_base_element(bs_amp_res) */
    if (sbr->Is_DRM_SBR)
        faad_get1bit(ld);
#endif

    if ((result = sbr_grid(ld, sbr, 0)) > 0)
        return result;
    sbr_dtdf(ld, sbr, 0);
    invf_mode(ld, sbr, 0);
    sbr_envelope(ld, sbr, 0);
    sbr_noise(ld, sbr, 0);

    envelope_noise_dequantisation(sbr, 0);

    memset(sbr->bs_add_harmonic[0], 0, 64*sizeof(uint8_t));

    sbr->bs_add_harmonic_flag[0] = faad_get1bit(ld
        DEBUGVAR(1,223,"sbr_single_channel_element(): bs_add_harmonic_flag[0]"));
    if (sbr->bs_add_harmonic_flag[0])
        sinusoidal_coding(ld, sbr, 0);

    sbr->bs_extended_data = faad_get1bit(ld
        DEBUGVAR(1,224,"sbr_single_channel_element(): bs_extended_data[0]"));
    if (sbr->bs_extended_data)
    {
        uint16_t nr_bits_left;
        uint16_t cnt = (uint16_t)faad_getbits(ld, 4
            DEBUGVAR(1,225,"sbr_single_channel_element(): bs_extension_size"));
        if (cnt == 15)
        {
            cnt += (uint16_t)faad_getbits(ld, 8
                DEBUGVAR(1,226,"sbr_single_channel_element(): bs_esc_count"));
        }

        nr_bits_left = 8 * cnt;
        while (nr_bits_left > 7)
        {
            sbr->bs_extension_id = (uint8_t)faad_getbits(ld, 2
                DEBUGVAR(1,227,"sbr_single_channel_element(): bs_extension_id"));
            nr_bits_left -= 2;
            nr_bits_left -= sbr_extension(ld, sbr, sbr->bs_extension_id, nr_bits_left);
        }

        /* Corrigendum */
        if (nr_bits_left > 0)
        {
            faad_getbits(ld, nr_bits_left
                DEBUGVAR(1,280,"sbr_single_channel_element(): nr_bits_left"));
        }
    }

    return 0;
}
Ejemplo n.º 4
0
/* table 5 */
static uint8_t sbr_single_channel_element(bitfile *ld, sbr_info *sbr)
{
    uint8_t result;

    if (faad_get1bit(ld
        DEBUGVAR(1,220,"sbr_single_channel_element(): bs_data_extra")))
    {
        faad_getbits(ld, 4
            DEBUGVAR(1,221,"sbr_single_channel_element(): bs_reserved_bits_data"));
    }

#ifdef DRM
    /* bs_coupling, from sbr_channel_pair_base_element(bs_amp_res) */
    if (sbr->Is_DRM_SBR)
    {
        faad_get1bit(ld);
    }
#endif

    if ((result = sbr_grid(ld, sbr, 0)) > 0)
        return result;

    sbr_dtdf(ld, sbr, 0);
    invf_mode(ld, sbr, 0);
    sbr_envelope(ld, sbr, 0);
    sbr_noise(ld, sbr, 0);

#ifndef FIXED_POINT
    envelope_noise_dequantisation(sbr, 0);
#endif

    memset(sbr->bs_add_harmonic[0], 0, 64*sizeof(uint8_t));

    sbr->bs_add_harmonic_flag[0] = faad_get1bit(ld
        DEBUGVAR(1,223,"sbr_single_channel_element(): bs_add_harmonic_flag[0]"));
    if (sbr->bs_add_harmonic_flag[0])
        sinusoidal_coding(ld, sbr, 0);

    sbr->bs_extended_data = faad_get1bit(ld
        DEBUGVAR(1,224,"sbr_single_channel_element(): bs_extended_data[0]"));

    if (sbr->bs_extended_data)
    {
        uint16_t nr_bits_left;
#if (defined(PS_DEC) || defined(DRM_PS))
        uint8_t ps_ext_read = 0;
#endif
        uint16_t cnt = (uint16_t)faad_getbits(ld, 4
            DEBUGVAR(1,225,"sbr_single_channel_element(): bs_extension_size"));
        if (cnt == 15)
        {
            cnt += (uint16_t)faad_getbits(ld, 8
                DEBUGVAR(1,226,"sbr_single_channel_element(): bs_esc_count"));
        }

        nr_bits_left = 8 * cnt;
        while (nr_bits_left > 7)
        {
            uint16_t tmp_nr_bits = 0;

            sbr->bs_extension_id = (uint8_t)faad_getbits(ld, 2
                DEBUGVAR(1,227,"sbr_single_channel_element(): bs_extension_id"));
            tmp_nr_bits += 2;

            /* allow only 1 PS extension element per extension data */
#if (defined(PS_DEC) || defined(DRM_PS))
#if (defined(PS_DEC) && defined(DRM_PS))
            if (sbr->bs_extension_id == EXTENSION_ID_PS || sbr->bs_extension_id == DRM_PARAMETRIC_STEREO)
#else
#ifdef PS_DEC
            if (sbr->bs_extension_id == EXTENSION_ID_PS)
#else
#ifdef DRM_PS
            if (sbr->bs_extension_id == DRM_PARAMETRIC_STEREO)
#endif
#endif
#endif
            {
                if (ps_ext_read == 0)
                {
                    ps_ext_read = 1;
                } else {
                    /* to be safe make it 3, will switch to "default"
                     * in sbr_extension() */
#ifdef DRM
                    return 1;
#else
                    sbr->bs_extension_id = 3;
#endif
                }
            }
#endif

            tmp_nr_bits += sbr_extension(ld, sbr, sbr->bs_extension_id, nr_bits_left);

            /* check if the data read is bigger than the number of available bits */
            if (tmp_nr_bits > nr_bits_left)
                return 1;

            nr_bits_left -= tmp_nr_bits;
        }

        /* Corrigendum */
        if (nr_bits_left > 0)
        {
            faad_getbits(ld, nr_bits_left
                DEBUGVAR(1,280,"sbr_single_channel_element(): nr_bits_left"));
        }
    }

    return 0;
}