1 /*****************************************************************************
2 * smem.c: stream output to memory buffer module
3 *****************************************************************************
4 * Copyright (C) 2009 the VideoLAN team
7 * Authors: Christophe Courtaut <christophe.courtaut@gmail.com>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************
28 * You should use this module in combination with the transcode module, to get
29 * raw datas from it. This module does not make any conversion at all, so you
30 * need to use the transcode module for this purpose.
32 * For example, you can use smem as it :
33 * --sout="#transcode{vcodec=RV24,acodec=s16l}:smem{smem-options}"
35 * Into each lock function (audio and video), you will have all the information
36 * you need to allocate a buffer, so that this module will copy data in it.
38 * the video-data and audio-data pointers will be passed to lock/unlock function
40 ******************************************************************************/
42 /*****************************************************************************
44 *****************************************************************************/
50 #include <vlc_common.h>
51 #include <vlc_plugin.h>
53 #include <vlc_block.h>
54 #include <vlc_codec.h>
56 /*****************************************************************************
58 *****************************************************************************/
60 #define T_VIDEO_PRERENDER_CALLBACK N_( "Video prerender callback" )
61 #define LT_VIDEO_PRERENDER_CALLBACK N_( "Address of the video prerender callback function" \
62 "this function will set the buffer where render will be done" )
64 #define T_AUDIO_PRERENDER_CALLBACK N_( "Audio prerender callback" )
65 #define LT_AUDIO_PRERENDER_CALLBACK N_( "Address of the audio prerender callback function." \
66 "this function will set the buffer where render will be done" )
68 #define T_VIDEO_POSTRENDER_CALLBACK N_( "Video postrender callback" )
69 #define LT_VIDEO_POSTRENDER_CALLBACK N_( "Address of the video postrender callback function." \
70 "this function will be called when the render is into the buffer" )
72 #define T_AUDIO_POSTRENDER_CALLBACK N_( "Audio postrender callback" )
73 #define LT_AUDIO_POSTRENDER_CALLBACK N_( "Address of the audio postrender callback function." \
74 "this function will be called when the render is into the buffer" )
76 #define T_VIDEO_DATA N_( "Video Callback data" )
77 #define LT_VIDEO_DATA N_( "Data for the video callback function." )
79 #define T_AUDIO_DATA N_( "Audio callback data" )
80 #define LT_AUDIO_DATA N_( "Data for the audio callback function." )
82 #define T_TIME_SYNC N_( "Time Synchronized output" )
83 #define LT_TIME_SYNC N_( "Time Synchronisation option for output. " \
84 "If true, stream will render as usual, else " \
85 "it will be rendered as fast as possible.")
87 static int Open ( vlc_object_t
* );
88 static void Close( vlc_object_t
* );
90 #define SOUT_CFG_PREFIX "sout-smem-"
91 #define SOUT_PREFIX_VIDEO SOUT_CFG_PREFIX"video-"
92 #define SOUT_PREFIX_AUDIO SOUT_CFG_PREFIX"audio-"
95 set_shortname( N_("Smem"))
96 set_description( N_("Stream output to memory buffer") )
97 set_capability( "sout stream", 0 )
98 add_shortcut( "smem" )
99 set_category( CAT_SOUT
)
100 set_subcategory( SUBCAT_SOUT_STREAM
)
101 add_string( SOUT_PREFIX_VIDEO
"prerender-callback", "0", NULL
, T_VIDEO_PRERENDER_CALLBACK
, LT_VIDEO_PRERENDER_CALLBACK
, true )
103 add_string( SOUT_PREFIX_AUDIO
"prerender-callback", "0", NULL
, T_AUDIO_PRERENDER_CALLBACK
, LT_AUDIO_PRERENDER_CALLBACK
, true )
105 add_string( SOUT_PREFIX_VIDEO
"postrender-callback", "0", NULL
, T_VIDEO_POSTRENDER_CALLBACK
, LT_VIDEO_POSTRENDER_CALLBACK
, true )
107 add_string( SOUT_PREFIX_AUDIO
"postrender-callback", "0", NULL
, T_AUDIO_POSTRENDER_CALLBACK
, LT_AUDIO_POSTRENDER_CALLBACK
, true )
109 add_string( SOUT_PREFIX_VIDEO
"data", "0", NULL
, T_VIDEO_DATA
, LT_VIDEO_DATA
, true )
111 add_string( SOUT_PREFIX_AUDIO
"data", "0", NULL
, T_AUDIO_DATA
, LT_VIDEO_DATA
, true )
113 add_bool( SOUT_CFG_PREFIX
"time-sync", true, NULL
, T_TIME_SYNC
, LT_TIME_SYNC
, true )
115 set_callbacks( Open
, Close
)
119 /*****************************************************************************
120 * Exported prototypes
121 *****************************************************************************/
122 static const char *const ppsz_sout_options
[] = {
123 "video-prerender-callback", "audio-prerender-callback",
124 "video-postrender-callback", "audio-postrender-callback", "video-data", "audio-data", "time-sync", NULL
127 static sout_stream_id_t
*Add ( sout_stream_t
*, es_format_t
* );
128 static int Del ( sout_stream_t
*, sout_stream_id_t
* );
129 static int Send( sout_stream_t
*, sout_stream_id_t
*, block_t
* );
131 static sout_stream_id_t
*AddVideo( sout_stream_t
*p_stream
, es_format_t
*p_fmt
);
132 static sout_stream_id_t
*AddAudio( sout_stream_t
*p_stream
, es_format_t
*p_fmt
);
134 static int SendVideo( sout_stream_t
*p_stream
, sout_stream_id_t
*id
,
136 static int SendAudio( sout_stream_t
*p_stream
, sout_stream_id_t
*id
,
139 struct sout_stream_id_t
145 struct sout_stream_sys_t
148 void ( *pf_video_prerender_callback
) ( void* p_video_data
, uint8_t** pp_pixel_buffer
, int size
);
149 void ( *pf_audio_prerender_callback
) ( void* p_audio_data
, uint8_t** pp_pcm_buffer
, unsigned int size
);
150 void ( *pf_video_postrender_callback
) ( void* p_video_data
, uint8_t* p_pixel_buffer
, int width
, int height
, int pixel_pitch
, int size
, mtime_t pts
);
151 void ( *pf_audio_postrender_callback
) ( void* p_audio_data
, uint8_t* p_pcm_buffer
, unsigned int channels
, unsigned int rate
, unsigned int nb_samples
, unsigned int bits_per_sample
, unsigned int size
, mtime_t pts
);
155 /*****************************************************************************
157 *****************************************************************************/
158 static int Open( vlc_object_t
*p_this
)
161 sout_stream_t
*p_stream
= (sout_stream_t
*)p_this
;
162 sout_stream_sys_t
*p_sys
;
164 p_sys
= calloc( 1, sizeof( sout_stream_sys_t
) );
167 p_stream
->p_sys
= p_sys
;
169 config_ChainParse( p_stream
, SOUT_CFG_PREFIX
, ppsz_sout_options
,
172 p_sys
->time_sync
= var_GetBool( p_stream
, SOUT_CFG_PREFIX
"time-sync" );
174 psz_tmp
= var_GetString( p_stream
, SOUT_PREFIX_VIDEO
"prerender-callback" );
175 p_sys
->pf_video_prerender_callback
= (void (*) (void *, uint8_t**, int))(intptr_t)atoll( psz_tmp
);
178 psz_tmp
= var_GetString( p_stream
, SOUT_PREFIX_AUDIO
"prerender-callback" );
179 p_sys
->pf_audio_prerender_callback
= (void (*) (void* , uint8_t**, unsigned int))(intptr_t)atoll( psz_tmp
);
182 psz_tmp
= var_GetString( p_stream
, SOUT_PREFIX_VIDEO
"postrender-callback" );
183 p_sys
->pf_video_postrender_callback
= (void (*) (void*, uint8_t*, int, int, int, int, mtime_t
))(intptr_t)atoll( psz_tmp
);
186 psz_tmp
= var_GetString( p_stream
, SOUT_PREFIX_AUDIO
"postrender-callback" );
187 p_sys
->pf_audio_postrender_callback
= (void (*) (void*, uint8_t*, unsigned int, unsigned int, unsigned int, unsigned int, unsigned int, mtime_t
))(intptr_t)atoll( psz_tmp
);
190 /* Setting stream out module callbacks */
191 p_stream
->pf_add
= Add
;
192 p_stream
->pf_del
= Del
;
193 p_stream
->pf_send
= Send
;
195 /* Does the module need out_pace_control? */
196 if ( p_sys
->time_sync
)
197 p_stream
->p_sout
->i_out_pace_nocontrol
++;
202 /*****************************************************************************
204 *****************************************************************************/
205 static void Close( vlc_object_t
* p_this
)
207 sout_stream_t
*p_stream
= (sout_stream_t
*)p_this
;
208 if ( p_stream
->p_sys
->time_sync
)
209 p_stream
->p_sout
->i_out_pace_nocontrol
--;
210 free( p_stream
->p_sys
);
213 static sout_stream_id_t
*Add( sout_stream_t
*p_stream
, es_format_t
*p_fmt
)
215 sout_stream_id_t
*id
= NULL
;
217 if ( p_fmt
->i_cat
== VIDEO_ES
)
218 id
= AddVideo( p_stream
, p_fmt
);
219 else if ( p_fmt
->i_cat
== AUDIO_ES
)
220 id
= AddAudio( p_stream
, p_fmt
);
224 static sout_stream_id_t
*AddVideo( sout_stream_t
*p_stream
, es_format_t
*p_fmt
)
227 sout_stream_id_t
*id
;
228 int i_bits_per_pixel
;
230 switch( p_fmt
->i_codec
)
232 case VLC_CODEC_RGB32
:
234 i_bits_per_pixel
= 32;
237 case VLC_CODEC_RGB24
:
238 i_bits_per_pixel
= 24;
240 case VLC_CODEC_RGB16
:
241 case VLC_CODEC_RGB15
:
244 i_bits_per_pixel
= 16;
248 i_bits_per_pixel
= 12;
251 i_bits_per_pixel
= 8;
254 i_bits_per_pixel
= 0;
255 msg_Dbg( p_stream
, "non raw video format detected (%4.4s), buffers will contain compressed video", (char *)&p_fmt
->i_codec
);
259 id
= calloc( 1, sizeof( sout_stream_id_t
) );
263 psz_tmp
= var_GetString( p_stream
, SOUT_PREFIX_VIDEO
"data" );
264 id
->p_data
= (void *)( intptr_t )atoll( psz_tmp
);
268 id
->format
->video
.i_bits_per_pixel
= i_bits_per_pixel
;
272 static sout_stream_id_t
*AddAudio( sout_stream_t
*p_stream
, es_format_t
*p_fmt
)
275 sout_stream_id_t
* id
;
276 int i_bits_per_sample
;
278 switch( p_fmt
->i_codec
)
282 i_bits_per_sample
= 8;
288 i_bits_per_sample
= 16;
294 i_bits_per_sample
= 24;
300 i_bits_per_sample
= 32;
303 i_bits_per_sample
= 64;
306 msg_Err( p_stream
, "Smem does only support raw audio format" );
310 id
= calloc( 1, sizeof( sout_stream_id_t
) );
314 psz_tmp
= var_GetString( p_stream
, SOUT_PREFIX_AUDIO
"data" );
315 id
->p_data
= (void *)( intptr_t )atoll( psz_tmp
);
319 id
->format
->audio
.i_bitspersample
= i_bits_per_sample
;
323 static int Del( sout_stream_t
*p_stream
, sout_stream_id_t
*id
)
325 VLC_UNUSED( p_stream
);
330 static int Send( sout_stream_t
*p_stream
, sout_stream_id_t
*id
,
333 if ( id
->format
->i_cat
== VIDEO_ES
)
334 return SendVideo( p_stream
, id
, p_buffer
);
335 else if ( id
->format
->i_cat
== AUDIO_ES
)
336 return SendAudio( p_stream
, id
, p_buffer
);
340 static int SendVideo( sout_stream_t
*p_stream
, sout_stream_id_t
*id
,
343 sout_stream_sys_t
*p_sys
= p_stream
->p_sys
;
344 int i_line
, i_line_size
, i_size
, i_pixel_pitch
;
347 if( id
->format
->video
.i_bits_per_pixel
> 0 )
349 i_line
= id
->format
->video
.i_height
;
350 i_pixel_pitch
= id
->format
->video
.i_bits_per_pixel
/ 8;
351 i_line_size
= i_pixel_pitch
* id
->format
->video
.i_width
;
352 i_size
= i_line
* i_line_size
;
356 i_size
= p_buffer
->i_buffer
;
358 /* Calling the prerender callback to get user buffer */
359 p_sys
->pf_video_prerender_callback( id
->p_data
, &p_pixels
, i_size
);
360 /* Copying data into user buffer */
361 if( id
->format
->video
.i_bits_per_pixel
> 0 )
363 for ( int line
= 0; line
< i_line
; line
++, p_pixels
+= i_line_size
)
364 vlc_memcpy( p_pixels
, p_buffer
->p_buffer
+ i_line_size
* line
, i_line_size
);
368 vlc_memcpy( p_pixels
, p_buffer
->p_buffer
, i_size
);
370 /* Calling the postrender callback to tell the user his buffer is ready */
371 p_sys
->pf_video_postrender_callback( id
->p_data
, p_pixels
,
372 id
->format
->video
.i_width
, id
->format
->video
.i_height
,
373 id
->format
->video
.i_bits_per_pixel
, i_size
, p_buffer
->i_pts
);
374 block_ChainRelease( p_buffer
);
378 static int SendAudio( sout_stream_t
*p_stream
, sout_stream_id_t
*id
,
381 sout_stream_sys_t
*p_sys
= p_stream
->p_sys
;
383 uint8_t* p_pcm_buffer
;
386 i_size
= p_buffer
->i_buffer
;
387 i_samples
= i_size
/ ( ( id
->format
->audio
.i_bitspersample
/ 8 ) * id
->format
->audio
.i_channels
);
388 /* Calling the prerender callback to get user buffer */
389 p_sys
->pf_audio_prerender_callback( id
->p_data
, &p_pcm_buffer
, i_size
);
390 /* Copying data into user buffer */
391 vlc_memcpy( p_pcm_buffer
, p_buffer
->p_buffer
, i_size
);
392 /* Calling the postrender callback to tell the user his buffer is ready */
393 p_sys
->pf_audio_postrender_callback( id
->p_data
, p_pcm_buffer
,
394 id
->format
->audio
.i_channels
, id
->format
->audio
.i_rate
, i_samples
,
395 id
->format
->audio
.i_bitspersample
, i_size
, p_buffer
->i_pts
);
396 block_ChainRelease( p_buffer
);