1 /*****************************************************************************
2 * decoder.h: Input decoder functions
3 *****************************************************************************
4 * Copyright (C) 1998-2008 VLC authors and VideoLAN
5 * Copyright (C) 2008 Laurent Aimar
8 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU Lesser General Public License as published by
12 * the Free Software Foundation; either version 2.1 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU Lesser General Public License for more details.
20 * You should have received a copy of the GNU Lesser General Public License
21 * along with this program; if not, write to the Free Software Foundation,
22 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
25 #ifndef LIBVLC_INPUT_DECODER_H
26 #define LIBVLC_INPUT_DECODER_H 1
28 #include <vlc_common.h>
29 #include <vlc_codec.h>
31 #define BLOCK_FLAG_CORE_FLUSH (1 <<BLOCK_FLAG_CORE_PRIVATE_SHIFT)
33 decoder_t *input_DecoderNew( input_thread_t *, es_format_t *, input_clock_t *,
34 sout_instance_t * ) VLC_USED;
37 * This function changes the pause state.
38 * The date parameter MUST hold the exact date at wich the change has been
39 * done for proper vout/aout pausing.
41 void input_DecoderChangePause( decoder_t *, bool b_paused, mtime_t i_date );
44 * This function changes the delay.
46 void input_DecoderChangeDelay( decoder_t *, mtime_t i_delay );
49 * This function makes the decoder start waiting for a valid data block from its fifo.
51 void input_DecoderStartWait( decoder_t * );
54 * This function waits for the decoder to actually receive data.
56 void input_DecoderWait( decoder_t * );
59 * This function exits the waiting mode of the decoder.
61 void input_DecoderStopWait( decoder_t * );
64 * This function returns true if the decoder fifo is empty and false otherwise.
66 bool input_DecoderIsEmpty( decoder_t * );
69 * This function activates the request closed caption channel.
71 int input_DecoderSetCcState( decoder_t *, bool b_decode, int i_channel );
74 * This function returns an error if the requested channel does not exist and
75 * set pb_decode to the channel status(active or not) otherwise.
77 int input_DecoderGetCcState( decoder_t *, bool *pb_decode, int i_channel );
80 * This function set each pb_present entry to true if the corresponding channel
81 * exists or false otherwise.
83 void input_DecoderIsCcPresent( decoder_t *, bool pb_present[4] );
86 * This function force the display of the next picture and fills the stream
89 void input_DecoderFrameNext( decoder_t *p_dec, mtime_t *pi_duration );
92 * This function will return true if the ES format or meta data have changed since
93 * the last call. In which case, it will do a copy of the current es_format_t if p_fmt
94 * is not NULL and will do a copy of the current description if pp_meta is non NULL.
95 * The es_format_t MUST be freed by es_format_Clean and *pp_meta MUST be freed by
97 * Otherwise it will return false and will not initialize p_fmt and *pp_meta.
99 bool input_DecoderHasFormatChanged( decoder_t *p_dec, es_format_t *p_fmt, vlc_meta_t **pp_meta );
102 * This function returns the current size in bytes of the decoder fifo
104 size_t input_DecoderGetFifoSize( decoder_t *p_dec );
107 * This function returns the objects associated to a decoder
109 * They must be released using vlc_object_release().
111 void input_DecoderGetObjects( decoder_t *, vout_thread_t **, audio_output_t ** );