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/*****************************************************************
* gavl - a general purpose audio/video processing library
*
* Copyright (c) 2001 - 2012 Members of the Gmerlin project
* gmerlin-general@lists.sourceforge.net
* http://gmerlin.sourceforge.net
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
* *****************************************************************/
typedef struct gavl_mix_output_channel_s gavl_mix_output_channel_t;
typedef void (*gavl_mix_func_t)(gavl_mix_output_channel_t * channel,
const gavl_audio_frame_t * input_frame,
gavl_audio_frame_t * output_frame);
typedef struct
{
gavl_mix_func_t copy_func;
gavl_mix_func_t mix_1_to_1;
gavl_mix_func_t mix_2_to_1;
gavl_mix_func_t mix_3_to_1;
gavl_mix_func_t mix_4_to_1;
gavl_mix_func_t mix_5_to_1;
gavl_mix_func_t mix_6_to_1;
gavl_mix_func_t mix_all_to_1;
} gavl_mixer_table_t;
typedef struct gavl_mix_input_channel_s
{
int index; /* Which input channel */
union /* Weighing factor */
{
double f_float;
int f_int;
} factor;
} gavl_mix_input_channel_t;
struct gavl_mix_output_channel_s
{
int num_inputs;
int index;
gavl_mix_input_channel_t inputs[GAVL_MAX_CHANNELS];
gavl_mix_func_t func;
};
struct gavl_mix_matrix_s
{
gavl_mix_output_channel_t output_channels[GAVL_MAX_CHANNELS];
gavl_mixer_table_t mixer_table;
};
gavl_mix_matrix_t *
gavl_create_mix_matrix(gavl_audio_options_t * opt,
gavl_audio_format_t * in,
gavl_audio_format_t * out);
void gavl_destroy_mix_matrix(gavl_mix_matrix_t *);
void gavl_mix_audio(gavl_audio_convert_context_t * ctx);
void gavl_setup_mix_funcs_c(gavl_mixer_table_t * c,
gavl_audio_format_t * f);
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