1 /*****************************************************************************
3 *****************************************************************************
4 * Copyright (C) 2001, 2002 VideoLAN
5 * $Id: mpeg4video.c,v 1.11 2003/04/24 20:24:44 fenrir Exp $
7 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
8 * Eric Petit <titer@videolan.org>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 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 General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
23 *****************************************************************************/
25 /*****************************************************************************
27 *****************************************************************************/
30 #include <vlc/decoder.h>
31 #include <vlc/input.h>
34 #include <stdlib.h> /* malloc(), free() */
35 #include <string.h> /* strdup() */
39 /*****************************************************************************
41 *****************************************************************************/
42 typedef struct packetizer_thread_s
44 /* Input properties */
45 decoder_fifo_t *p_fifo;
47 /* Output properties */
48 sout_packetizer_input_t *p_sout_input;
49 sout_format_t output_format;
56 } packetizer_thread_t;
58 static int Open ( vlc_object_t * );
59 static int Run ( decoder_fifo_t * );
61 static int InitThread ( packetizer_thread_t * );
62 static void PacketizeThread ( packetizer_thread_t * );
63 static void EndThread ( packetizer_thread_t * );
66 static void input_ShowPES( decoder_fifo_t *p_fifo, pes_packet_t **pp_pes );
68 /*****************************************************************************
70 *****************************************************************************/
73 set_description( _("MPEG4 Video packetizer") );
74 set_capability( "packetizer", 50 );
75 set_callbacks( Open, NULL );
78 #define VIDEO_OBJECT_MASK 0x01f
79 #define VIDEO_OBJECT_LAYER_MASK 0x00f
81 #define VIDEO_OBJECT_START_CODE 0x100
82 #define VIDEO_OBJECT_LAYER_START_CODE 0x120
83 #define VISUAL_OBJECT_SEQUENCE_START_CODE 0x1b0
84 #define VISUAL_OBJECT_SEQUENCE_END_CODE 0x1b1
85 #define USER_DATA_START_CODE 0x1b2
86 #define GROUP_OF_VOP_START_CODE 0x1b3
87 #define VIDEO_SESSION_ERROR_CODE 0x1b4
88 #define VISUAL_OBJECT_START_CODE 0x1b5
89 #define VOP_START_CODE 0x1b6
90 #define FACE_OBJECT_START_CODE 0x1ba
91 #define FACE_OBJECT_PLANE_START_CODE 0x1bb
92 #define MESH_OBJECT_START_CODE 0x1bc
93 #define MESH_OBJECT_PLANE_START_CODE 0x1bd
94 #define STILL_TEXTURE_OBJECT_START_CODE 0x1be
95 #define TEXTURE_SPATIAL_LAYER_START_CODE 0x1bf
96 #define TEXTURE_SNR_LAYER_START_CODE 0x1c0
99 /*****************************************************************************
100 * OpenDecoder: probe the packetizer and return score
101 *****************************************************************************
102 * Tries to launch a decoder and return score so that the interface is able
104 *****************************************************************************/
105 static int Open( vlc_object_t *p_this )
107 decoder_fifo_t *p_fifo = (decoder_fifo_t*) p_this;
109 p_fifo->pf_run = Run;
111 switch( p_fifo->i_fourcc )
113 case VLC_FOURCC( 'm', '4', 's', '2'):
114 case VLC_FOURCC( 'M', '4', 'S', '2'):
115 case VLC_FOURCC( 'm', 'p', '4', 's'):
116 case VLC_FOURCC( 'M', 'P', '4', 'S'):
117 case VLC_FOURCC( 'm', 'p', '4', 'v'):
118 case VLC_FOURCC( 'D', 'I', 'V', 'X'):
119 case VLC_FOURCC( 'd', 'i', 'v', 'x'):
120 case VLC_FOURCC( 'X', 'V', 'I', 'D'):
121 case VLC_FOURCC( 'X', 'v', 'i', 'D'):
122 case VLC_FOURCC( 'x', 'v', 'i', 'd'):
123 case VLC_FOURCC( 'D', 'X', '5', '0'):
124 case VLC_FOURCC( 0x04, 0, 0, 0):
125 case VLC_FOURCC( '3', 'I', 'V', '2'):
133 /*****************************************************************************
134 * RunDecoder: this function is called just after the thread is created
135 *****************************************************************************/
136 static int Run( decoder_fifo_t *p_fifo )
138 packetizer_thread_t *p_pack;
141 msg_Info( p_fifo, "Running MPEG4 Video packetizer" );
142 if( !( p_pack = malloc( sizeof( packetizer_thread_t ) ) ) )
144 msg_Err( p_fifo, "out of memory" );
145 DecoderError( p_fifo );
148 memset( p_pack, 0, sizeof( packetizer_thread_t ) );
150 p_pack->p_fifo = p_fifo;
152 if( InitThread( p_pack ) != 0 )
154 DecoderError( p_fifo );
158 while( ( !p_pack->p_fifo->b_die )&&( !p_pack->p_fifo->b_error ) )
160 PacketizeThread( p_pack );
164 if( ( b_error = p_pack->p_fifo->b_error ) )
166 DecoderError( p_pack->p_fifo );
179 #define FREE( p ) if( p ) free( p ); p = NULL
181 /*****************************************************************************
182 * InitThread: initialize data before entering main loop
183 *****************************************************************************/
185 static int InitThread( packetizer_thread_t *p_pack )
187 BITMAPINFOHEADER *p_bih;
189 p_bih = (BITMAPINFOHEADER*)p_pack->p_fifo->p_bitmapinfoheader;
191 if( p_bih && p_bih->biSize > sizeof( BITMAPINFOHEADER ) )
194 p_pack->i_vol = p_bih->biSize - sizeof( BITMAPINFOHEADER );
195 p_pack->p_vol = malloc( p_pack->i_vol );
196 memcpy( p_pack->p_vol, &p_bih[1], p_pack->i_vol );
198 /* create stream input output */
199 p_pack->output_format.i_cat = VIDEO_ES;
200 p_pack->output_format.i_fourcc = VLC_FOURCC( 'm', 'p', '4', 'v' );
201 p_pack->output_format.i_width = p_bih->biWidth;
202 p_pack->output_format.i_height = p_bih->biHeight;
203 p_pack->output_format.i_bitrate= 0;
205 p_pack->output_format.i_extra_data = p_pack->i_vol;
206 p_pack->output_format.p_extra_data = malloc( p_pack->i_vol );
207 memcpy( p_pack->output_format.p_extra_data,
211 msg_Warn( p_pack->p_fifo, "opening with vol size:%d", p_pack->i_vol );
212 p_pack->p_sout_input =
213 sout_InputNew( p_pack->p_fifo,
214 &p_pack->output_format );
220 p_pack->output_format.i_cat = UNKNOWN_ES;
221 p_pack->output_format.i_fourcc = VLC_FOURCC( 'n', 'u', 'l', 'l' );
222 p_pack->output_format.i_width = 0;
223 p_pack->output_format.i_height = 0;
224 p_pack->output_format.i_bitrate= 0;
225 p_pack->output_format.i_extra_data = 0;
226 p_pack->output_format.p_extra_data = NULL;
228 p_pack->p_sout_input =
229 sout_InputNew( p_pack->p_fifo,
230 &p_pack->output_format );
233 if( !p_pack->p_sout_input )
235 msg_Err( p_pack->p_fifo, "cannot add a new stream" );
238 p_pack->i_last_pts = 0;
243 static int m4v_FindStartCode( uint8_t **pp_data, uint8_t *p_end )
245 for( ; *pp_data < p_end - 4; (*pp_data)++ )
247 if( (*pp_data)[0] == 0 && (*pp_data)[1] == 0 && (*pp_data)[2] == 1 )
252 fprintf( stderr, "\n********* cannot find startcode\n" );
255 /*****************************************************************************
256 * PacketizeThread: packetize an unit (here copy a complete pes)
257 *****************************************************************************/
258 static void PacketizeThread( packetizer_thread_t *p_pack )
260 sout_buffer_t *p_sout_buffer;
265 /* **** get samples count **** */
266 input_ExtractPES( p_pack->p_fifo, &p_pes );
269 p_pack->p_fifo->b_error = 1;
273 i_pts = p_pes->i_pts;
275 if( i_pts <= 0 && p_pack->i_last_pts <= 0 )
277 msg_Dbg( p_pack->p_fifo, "need a starting pts" );
278 input_DeletePES( p_pack->p_fifo->p_packets_mgt, p_pes );
283 i_size = p_pes->i_pes_size;
286 pes_packet_t *p_pes_next;
287 data_packet_t *p_data;
291 sout_BufferNew( p_pack->p_sout_input->p_sout, i_size );
294 p_pack->p_fifo->b_error = 1;
297 /* TODO: memcpy of the pes packet */
298 for( i_buffer = 0, p_data = p_pes->p_first;
299 p_data != NULL && i_buffer < i_size;
300 p_data = p_data->p_next)
304 i_copy = __MIN( p_data->p_payload_end - p_data->p_payload_start,
308 p_pack->p_fifo->p_vlc->pf_memcpy( p_sout_buffer->p_buffer + i_buffer,
309 p_data->p_payload_start,
315 input_ShowPES( p_pack->p_fifo, &p_pes_next );
316 if( p_pes_next && p_pes_next->i_pts > 0 )
320 i_gap = p_pes_next->i_pts - p_pes->i_pts;
321 p_sout_buffer->i_length = i_gap;
325 p_sout_buffer->i_length = 0;
327 p_sout_buffer->i_dts = i_pts;
328 p_sout_buffer->i_pts = i_pts;
329 p_sout_buffer->i_bitrate = 0;
331 if( p_pack->p_vol == NULL )
333 uint8_t *p_vol_begin, *p_vol_end, *p_end;
334 /* search if p_sout_buffer contains with a vol */
335 p_vol_begin = p_sout_buffer->p_buffer;
337 p_end = p_sout_buffer->p_buffer + p_sout_buffer->i_size;
341 if( m4v_FindStartCode( &p_vol_begin, p_end ) )
345 msg_Dbg( p_pack->p_fifo,
346 "starcode 0x%2.2x%2.2x%2.2x%2.2x",
347 p_vol_begin[0], p_vol_begin[1], p_vol_begin[2], p_vol_begin[3] );
349 if( ( p_vol_begin[3] & ~VIDEO_OBJECT_MASK ) == ( VIDEO_OBJECT_START_CODE&0xff ) )
351 p_vol_end = p_vol_begin + 4;
352 if( m4v_FindStartCode( &p_vol_end, p_end ) )
356 if( ( p_vol_end[3] & ~VIDEO_OBJECT_LAYER_MASK ) == ( VIDEO_OBJECT_LAYER_START_CODE&0xff ) )
359 if( m4v_FindStartCode( &p_vol_end, p_end ) )
369 else if( ( p_vol_begin[3] & ~VIDEO_OBJECT_LAYER_MASK ) == ( VIDEO_OBJECT_LAYER_START_CODE&0xff) )
371 p_vol_end = p_vol_begin + 4;
372 if( m4v_FindStartCode( &p_vol_end, p_end ) )
378 if( p_vol_end != NULL && p_vol_begin < p_vol_end )
380 BITMAPINFOHEADER *p_bih =
381 (BITMAPINFOHEADER*)p_pack->p_fifo->p_bitmapinfoheader;
382 p_pack->i_vol = p_vol_end - p_vol_begin;
383 msg_Dbg( p_pack->p_fifo, "Reopening output" );
385 p_pack->p_vol = malloc( p_pack->i_vol );
386 memcpy( p_pack->p_vol, p_vol_begin, p_pack->i_vol );
388 sout_InputDelete( p_pack->p_sout_input );
390 p_pack->output_format.i_cat = VIDEO_ES;
391 p_pack->output_format.i_fourcc = VLC_FOURCC( 'm', 'p', '4', 'v' );
395 p_pack->output_format.i_width = p_bih->biWidth;
396 p_pack->output_format.i_height = p_bih->biHeight;
400 p_pack->output_format.i_width = 0;
401 p_pack->output_format.i_height = 0;
403 p_pack->output_format.i_bitrate= 0;
405 p_pack->output_format.i_extra_data = p_pack->i_vol;
406 p_pack->output_format.p_extra_data = malloc( p_pack->i_vol );
407 memcpy( p_pack->output_format.p_extra_data,
411 p_pack->p_sout_input =
412 sout_InputNew( p_pack->p_fifo,
413 &p_pack->output_format );
414 if( !p_pack->p_sout_input )
416 p_pack->p_fifo->b_error = 1;
431 sout_InputSendBuffer( p_pack->p_sout_input,
436 sout_BufferDelete( p_pack->p_sout_input->p_sout,
441 input_DeletePES( p_pack->p_fifo->p_packets_mgt, p_pes );
445 /*****************************************************************************
446 * EndThread : packetizer thread destruction
447 *****************************************************************************/
448 static void EndThread ( packetizer_thread_t *p_pack)
450 if( p_pack->p_sout_input )
452 sout_InputDelete( p_pack->p_sout_input );
456 static void input_ShowPES( decoder_fifo_t *p_fifo, pes_packet_t **pp_pes )
460 vlc_mutex_lock( &p_fifo->data_lock );
462 if( p_fifo->p_first == NULL )
466 vlc_mutex_unlock( &p_fifo->data_lock );
467 if( pp_pes ) *pp_pes = NULL;
471 /* Signal the input thread we're waiting. This is only
472 * needed in case of slave clock (ES plug-in) but it won't
474 vlc_cond_signal( &p_fifo->data_wait );
476 /* Wait for the input to tell us when we received a packet. */
477 vlc_cond_wait( &p_fifo->data_wait, &p_fifo->data_lock );
479 p_pes = p_fifo->p_first;
480 vlc_mutex_unlock( &p_fifo->data_lock );