-/*****************************************************************************\r
- * libmpeg2.c: mpeg2 video decoder module making use of libmpeg2.\r
- *****************************************************************************\r
- * Copyright (C) 1999-2001 VideoLAN\r
- * $Id: libmpeg2.c,v 1.1 2003/02/25 17:15:32 gbazin Exp $\r
- *\r
- * Authors: Gildas Bazin <gbazin@netcourrier.com>\r
- *\r
- * This program is free software; you can redistribute it and/or modify\r
- * it under the terms of the GNU General Public License as published by\r
- * the Free Software Foundation; either version 2 of the License, or\r
- * (at your option) any later version.\r
- * \r
- * This program is distributed in the hope that it will be useful,\r
- * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r
- * GNU General Public License for more details.\r
- *\r
- * You should have received a copy of the GNU General Public License\r
- * along with this program; if not, write to the Free Software\r
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.\r
- *****************************************************************************/\r
-\r
-/*****************************************************************************\r
- * Preamble\r
- *****************************************************************************/\r
-#include <vlc/vlc.h>\r
-#include <vlc/vout.h>\r
-#include <vlc/input.h>\r
-#include <vlc/decoder.h>\r
-\r
-#include <stdlib.h> /* malloc(), free() */\r
-#include <string.h> /* memcpy(), memset() */\r
-\r
-#include <mpeg2dec/mpeg2.h>\r
-\r
-/*****************************************************************************\r
- * dec_thread_t : libmpeg2 decoder thread descriptor\r
- *****************************************************************************/\r
-typedef struct dec_thread_t\r
-{\r
- /*\r
- * libmpeg2 properties\r
- */\r
- mpeg2dec_t *p_mpeg2dec;\r
- const mpeg2_info_t *p_info;\r
-\r
- /*\r
- * Input properties\r
- */\r
- decoder_fifo_t *p_fifo; /* stores the PES stream data */\r
- pes_packet_t *p_pes; /* current PES we are decoding */\r
- mtime_t i_pts;\r
-\r
- /*\r
- * Output properties\r
- */\r
- vout_thread_t *p_vout;\r
-\r
-} dec_thread_t;\r
-\r
-/*****************************************************************************\r
- * Local prototypes\r
- *****************************************************************************/\r
-static int OpenDecoder ( vlc_object_t * );\r
-static int RunDecoder ( decoder_fifo_t * );\r
-static void CloseDecoder ( dec_thread_t * );\r
-\r
-/*****************************************************************************\r
- * Module descriptor\r
- *****************************************************************************/\r
-vlc_module_begin();\r
- set_description( _("libmpeg2 decoder module") );\r
- set_capability( "decoder", 40 );\r
- set_callbacks( OpenDecoder, NULL );\r
- add_shortcut( "libmpeg2" );\r
-vlc_module_end();\r
-\r
-/*****************************************************************************\r
- * OpenDecoder: probe the decoder and return score\r
- *****************************************************************************/\r
-static int OpenDecoder( vlc_object_t *p_this )\r
-{\r
- decoder_fifo_t *p_fifo = (decoder_fifo_t*) p_this;\r
-\r
- if( p_fifo->i_fourcc != VLC_FOURCC('m','p','g','v') )\r
- {\r
- return VLC_EGENERIC;\r
- }\r
-\r
- p_fifo->pf_run = RunDecoder;\r
- return VLC_SUCCESS;\r
-}\r
-/*****************************************************************************\r
- * RunDecoder: the libmpeg2 decoder\r
- *****************************************************************************/\r
-static int RunDecoder( decoder_fifo_t *p_fifo )\r
-{\r
- dec_thread_t *p_dec;\r
- data_packet_t *p_data = NULL;\r
- mpeg2_state_t state;\r
- picture_t *p_pic;\r
- int i_aspect, i_chroma;\r
-\r
- /* Allocate the memory needed to store the thread's structure */\r
- if( (p_dec = (dec_thread_t *)malloc (sizeof(dec_thread_t)) )\r
- == NULL)\r
- {\r
- msg_Err( p_fifo, "out of memory" );\r
- goto error;\r
- }\r
-\r
- /* Initialize the thread properties */\r
- memset( p_dec, 0, sizeof(dec_thread_t) );\r
- p_dec->p_fifo = p_fifo;\r
- p_dec->p_pes = NULL;\r
- p_dec->p_vout = NULL;\r
- p_dec->p_mpeg2dec = NULL;\r
- p_dec->p_info = NULL;\r
- p_dec->i_pts = 0;\r
-\r
- /* Initialize decoder */\r
- p_dec->p_mpeg2dec = mpeg2_init();\r
- if( p_dec->p_mpeg2dec == NULL)\r
- goto error;\r
-\r
- p_dec->p_info = mpeg2_info( p_dec->p_mpeg2dec );\r
-\r
- /* libmpeg2 decoder thread's main loop */\r
- while( (!p_dec->p_fifo->b_die) && (!p_dec->p_fifo->b_error) )\r
- {\r
- state = mpeg2_parse( p_dec->p_mpeg2dec );\r
-\r
- switch( state )\r
- {\r
- case STATE_BUFFER:\r
- /* Feed libmpeg2 a data packet at a time */\r
- if( p_data == NULL )\r
- {\r
- /* Get the next PES */\r
- if( p_dec->p_pes )\r
- input_DeletePES( p_dec->p_fifo->p_packets_mgt,\r
- p_dec->p_pes );\r
-\r
- input_ExtractPES( p_dec->p_fifo, &p_dec->p_pes );\r
- if( !p_dec->p_pes )\r
- {\r
- p_dec->p_fifo->b_error = 1;\r
- break;\r
- }\r
-\r
- if( p_dec->p_pes->i_pts )\r
- {\r
- mpeg2_pts( p_dec->p_mpeg2dec,\r
- p_dec->p_pes->i_pts * 9 / 100 );\r
- }\r
- p_data = p_dec->p_pes->p_first;\r
- }\r
-\r
- if( p_data != NULL )\r
- {\r
- mpeg2_buffer( p_dec->p_mpeg2dec,\r
- p_data->p_payload_start,\r
- p_data->p_payload_end );\r
-\r
- p_data = p_data->p_next;\r
- }\r
- break;\r
-\r
- case STATE_SEQUENCE:\r
- /* Initialize video output */\r
- i_aspect = p_dec->p_info->sequence->width *\r
- p_dec->p_info->sequence->pixel_width /\r
- p_dec->p_info->sequence->height * VOUT_ASPECT_FACTOR /\r
- p_dec->p_info->sequence->pixel_height;\r
-\r
- i_chroma = VLC_FOURCC('Y','V','1','2');\r
-\r
- p_dec->p_vout = vout_Request( p_dec->p_fifo, p_dec->p_vout,\r
- p_dec->p_info->sequence->width,\r
- p_dec->p_info->sequence->height,\r
- i_chroma, i_aspect );\r
- break;\r
-\r
- case STATE_PICTURE:\r
- {\r
- uint8_t * buf[3];\r
-\r
- /* Get a new picture */\r
- while( !(p_pic = vout_CreatePicture( p_dec->p_vout, 0, 0, 0 ) ) )\r
- {\r
- if( p_dec->p_fifo->b_die || p_dec->p_fifo->b_error )\r
- break;\r
-\r
- msleep( VOUT_OUTMEM_SLEEP );\r
- }\r
- if( p_pic == NULL )\r
- break;\r
-\r
- buf[0] = p_pic->p[0].p_pixels;\r
- buf[1] = p_pic->p[1].p_pixels;\r
- buf[2] = p_pic->p[2].p_pixels;\r
- mpeg2_set_buf( p_dec->p_mpeg2dec, buf, p_pic );\r
- }\r
- break;\r
-\r
- case STATE_END:\r
- msg_Err( p_dec->p_fifo, "STATE_END" );\r
- case STATE_SLICE:\r
-#if 0\r
- msg_Err( p_dec->p_fifo, "STATE_SLICE: %i",\r
- p_dec->p_info->display_fbuf ?\r
- p_dec->p_info->display_fbuf->id : -1 );\r
-#endif\r
- if( p_dec->p_info->display_fbuf\r
- && p_dec->p_info->display_fbuf->id )\r
- {\r
- p_pic = (picture_t *)p_dec->p_info->display_fbuf->id;\r
-\r
- if( p_dec->p_info->display_picture->flags & PIC_FLAG_PTS )\r
- {\r
- p_dec->i_pts =\r
- ((mtime_t)p_dec->p_info->display_picture->pts)\r
- * 100 / 9;\r
- }\r
- else\r
- {\r
- p_dec->i_pts += (p_dec->p_info->sequence->frame_period/27);\r
- }\r
-\r
- vout_DatePicture( p_dec->p_vout, p_pic, p_dec->i_pts );\r
-\r
- vout_DisplayPicture( p_dec->p_vout, p_pic );\r
- }\r
- break;\r
-\r
- default:\r
- break;\r
- }\r
- }\r
-\r
- /* If b_error is set, the libmpeg2 decoder thread enters the error loop */\r
- if( p_dec->p_fifo->b_error )\r
- {\r
- DecoderError( p_dec->p_fifo );\r
- }\r
-\r
- /* End of the libmpeg2 decoder thread */\r
- CloseDecoder( p_dec );\r
-\r
- return 0;\r
-\r
- error:\r
- DecoderError( p_fifo );\r
- if( p_dec )\r
- {\r
- if( p_dec->p_fifo )\r
- p_dec->p_fifo->b_error = 1;\r
-\r
- /* End of the libmpeg2 decoder thread */\r
- CloseDecoder( p_dec );\r
- }\r
-\r
- return -1;\r
-}\r
-\r
-/*****************************************************************************\r
- * CloseDecoder: libmpeg2 decoder destruction\r
- *****************************************************************************/\r
-static void CloseDecoder( dec_thread_t * p_dec )\r
-{\r
- if( p_dec )\r
- {\r
- if( p_dec->p_pes )\r
- input_DeletePES( p_dec->p_fifo->p_packets_mgt, p_dec->p_pes );\r
-\r
- vout_Request( p_dec->p_fifo, p_dec->p_vout, 0, 0, 0, 0 );\r
-\r
- if( p_dec->p_mpeg2dec ) mpeg2_close( p_dec->p_mpeg2dec );\r
-\r
- free( p_dec );\r
- }\r
-}\r
+/*****************************************************************************
+ * libmpeg2.c: mpeg2 video decoder module making use of libmpeg2.
+ *****************************************************************************
+ * Copyright (C) 1999-2001 the VideoLAN team
+ * $Id$
+ *
+ * Authors: Gildas Bazin <gbazin@videolan.org>
+ * Christophe Massiot <massiot@via.ecp.fr>
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
+
+/*****************************************************************************
+ * Preamble
+ *****************************************************************************/
+#include <vlc/vlc.h>
+#include <vlc_vout.h>
+#include <vlc_codec.h>
+
+#include <mpeg2dec/mpeg2.h>
+
+#include <vlc_vout_synchro.h>
+
+/* Aspect ratio (ISO/IEC 13818-2 section 6.3.3, table 6-3) */
+#define AR_SQUARE_PICTURE 1 /* square pixels */
+#define AR_4_3_PICTURE 2 /* 4:3 picture (TV) */
+#define AR_16_9_PICTURE 3 /* 16:9 picture (wide screen) */
+#define AR_221_1_PICTURE 4 /* 2.21:1 picture (movie) */
+
+/*****************************************************************************
+ * decoder_sys_t : libmpeg2 decoder descriptor
+ *****************************************************************************/
+struct decoder_sys_t
+{
+ /*
+ * libmpeg2 properties
+ */
+ mpeg2dec_t *p_mpeg2dec;
+ const mpeg2_info_t *p_info;
+ vlc_bool_t b_skip;
+
+ /*
+ * Input properties
+ */
+ mtime_t i_previous_pts;
+ mtime_t i_current_pts;
+ mtime_t i_previous_dts;
+ mtime_t i_current_dts;
+ int i_current_rate;
+ picture_t * p_picture_to_destroy;
+ vlc_bool_t b_garbage_pic;
+ vlc_bool_t b_after_sequence_header; /* is it the next frame after
+ * the sequence header ? */
+ vlc_bool_t b_slice_i; /* intra-slice refresh stream */
+ vlc_bool_t b_second_field;
+
+ vlc_bool_t b_preroll;
+
+ /*
+ * Output properties
+ */
+ vout_synchro_t *p_synchro;
+ int i_aspect;
+ int i_sar_num;
+ int i_sar_den;
+ mtime_t i_last_frame_pts;
+
+};
+
+/*****************************************************************************
+ * Local prototypes
+ *****************************************************************************/
+static int OpenDecoder( vlc_object_t * );
+static void CloseDecoder( vlc_object_t * );
+
+static picture_t *DecodeBlock( decoder_t *, block_t ** );
+
+static picture_t *GetNewPicture( decoder_t *, uint8_t ** );
+static void GetAR( decoder_t *p_dec );
+
+/*****************************************************************************
+ * Module descriptor
+ *****************************************************************************/
+vlc_module_begin();
+ set_description( _("MPEG I/II video decoder (using libmpeg2)") );
+ set_capability( "decoder", 150 );
+ set_category( CAT_INPUT );
+ set_subcategory( SUBCAT_INPUT_VCODEC );
+ set_callbacks( OpenDecoder, CloseDecoder );
+ add_shortcut( "libmpeg2" );
+vlc_module_end();
+
+/*****************************************************************************
+ * OpenDecoder: probe the decoder and return score
+ *****************************************************************************/
+static int OpenDecoder( vlc_object_t *p_this )
+{
+ decoder_t *p_dec = (decoder_t*)p_this;
+ decoder_sys_t *p_sys;
+ uint32_t i_accel = 0;
+
+ if( p_dec->fmt_in.i_codec != VLC_FOURCC('m','p','g','v') &&
+ p_dec->fmt_in.i_codec != VLC_FOURCC('m','p','g','1') &&
+ /* Pinnacle hardware-mpeg1 */
+ p_dec->fmt_in.i_codec != VLC_FOURCC('P','I','M','1') &&
+ /* ATI Video */
+ p_dec->fmt_in.i_codec != VLC_FOURCC('V','C','R','2') &&
+ p_dec->fmt_in.i_codec != VLC_FOURCC('m','p','2','v') &&
+ p_dec->fmt_in.i_codec != VLC_FOURCC('m','p','g','2') &&
+ p_dec->fmt_in.i_codec != VLC_FOURCC('h','d','v','2') )
+ {
+ return VLC_EGENERIC;
+ }
+
+ /* Allocate the memory needed to store the decoder's structure */
+ if( ( p_dec->p_sys = p_sys =
+ (decoder_sys_t *)malloc(sizeof(decoder_sys_t)) ) == NULL )
+ {
+ msg_Err( p_dec, "out of memory" );
+ return VLC_EGENERIC;
+ }
+
+ /* Initialize the thread properties */
+ memset( p_sys, 0, sizeof(decoder_sys_t) );
+ p_sys->p_mpeg2dec = NULL;
+ p_sys->p_synchro = NULL;
+ p_sys->p_info = NULL;
+ p_sys->i_current_pts = 0;
+ p_sys->i_previous_pts = 0;
+ p_sys->i_current_dts = 0;
+ p_sys->i_previous_dts = 0;
+ p_sys->p_picture_to_destroy = NULL;
+ p_sys->b_garbage_pic = 0;
+ p_sys->b_slice_i = 0;
+ p_sys->b_second_field = 0;
+ p_sys->b_skip = 0;
+ p_sys->b_preroll = VLC_FALSE;
+
+#if defined( __i386__ ) || defined( __x86_64__ )
+ if( p_dec->p_libvlc_global->i_cpu & CPU_CAPABILITY_MMX )
+ {
+ i_accel |= MPEG2_ACCEL_X86_MMX;
+ }
+
+ if( p_dec->p_libvlc_global->i_cpu & CPU_CAPABILITY_3DNOW )
+ {
+ i_accel |= MPEG2_ACCEL_X86_3DNOW;
+ }
+
+ if( p_dec->p_libvlc_global->i_cpu & CPU_CAPABILITY_MMXEXT )
+ {
+ i_accel |= MPEG2_ACCEL_X86_MMXEXT;
+ }
+
+#elif defined( __powerpc__ ) || defined( __ppc__ ) || defined( __ppc64__ )
+ if( p_dec->p_libvlc_global->i_cpu & CPU_CAPABILITY_ALTIVEC )
+ {
+ i_accel |= MPEG2_ACCEL_PPC_ALTIVEC;
+ }
+
+#else
+ /* If we do not know this CPU, trust libmpeg2's feature detection */
+ i_accel = MPEG2_ACCEL_DETECT;
+
+#endif
+
+ /* Set CPU acceleration features */
+ mpeg2_accel( i_accel );
+
+ /* Initialize decoder */
+ p_sys->p_mpeg2dec = mpeg2_init();
+ if( p_sys->p_mpeg2dec == NULL)
+ {
+ msg_Err( p_dec, "mpeg2_init() failed" );
+ free( p_sys );
+ return VLC_EGENERIC;
+ }
+
+ p_sys->p_info = mpeg2_info( p_sys->p_mpeg2dec );
+
+ p_dec->pf_decode_video = DecodeBlock;
+
+ return VLC_SUCCESS;
+}
+
+/*****************************************************************************
+ * RunDecoder: the libmpeg2 decoder
+ *****************************************************************************/
+static picture_t *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
+{
+ decoder_sys_t *p_sys = p_dec->p_sys;
+ mpeg2_state_t state;
+ picture_t *p_pic;
+
+ block_t *p_block;
+
+ if( !pp_block || !*pp_block ) return NULL;
+
+ p_block = *pp_block;
+
+ while( 1 )
+ {
+ state = mpeg2_parse( p_sys->p_mpeg2dec );
+
+ switch( state )
+ {
+ case STATE_BUFFER:
+ if( !p_block->i_buffer )
+ {
+ block_Release( p_block );
+ return NULL;
+ }
+
+ if( (p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY
+ | BLOCK_FLAG_CORRUPTED)) &&
+ p_sys->p_synchro &&
+ p_sys->p_info->sequence &&
+ p_sys->p_info->sequence->width != (unsigned)-1 )
+ {
+ vout_SynchroReset( p_sys->p_synchro );
+ if( p_sys->p_info->current_fbuf != NULL
+ && p_sys->p_info->current_fbuf->id != NULL )
+ {
+ p_sys->b_garbage_pic = 1;
+ p_pic = p_sys->p_info->current_fbuf->id;
+ }
+ else
+ {
+ uint8_t *buf[3];
+ buf[0] = buf[1] = buf[2] = NULL;
+ if( (p_pic = GetNewPicture( p_dec, buf )) == NULL )
+ break;
+ mpeg2_set_buf( p_sys->p_mpeg2dec, buf, p_pic );
+ mpeg2_stride( p_sys->p_mpeg2dec, p_pic->format.i_width );
+ }
+ p_sys->p_picture_to_destroy = p_pic;
+
+ if ( p_sys->b_slice_i )
+ {
+ vout_SynchroNewPicture( p_sys->p_synchro,
+ I_CODING_TYPE, 2, 0, 0, p_sys->i_current_rate,
+ p_sys->p_info->sequence->flags & SEQ_FLAG_LOW_DELAY );
+ vout_SynchroDecode( p_sys->p_synchro );
+ vout_SynchroEnd( p_sys->p_synchro, I_CODING_TYPE, 0 );
+ }
+ }
+
+ if( p_block->i_flags & BLOCK_FLAG_PREROLL )
+ {
+ p_sys->b_preroll = VLC_TRUE;
+ }
+ else if( p_sys->b_preroll )
+ {
+ p_sys->b_preroll = VLC_FALSE;
+ /* Reset synchro */
+ vout_SynchroReset( p_sys->p_synchro );
+ }
+
+#ifdef PIC_FLAG_PTS
+ if( p_block->i_pts )
+ {
+ mpeg2_pts( p_sys->p_mpeg2dec, (uint32_t)p_block->i_pts );
+
+#else /* New interface */
+ if( p_block->i_pts || p_block->i_dts )
+ {
+ mpeg2_tag_picture( p_sys->p_mpeg2dec,
+ (uint32_t)p_block->i_pts,
+ (uint32_t)p_block->i_dts );
+#endif
+ p_sys->i_previous_pts = p_sys->i_current_pts;
+ p_sys->i_current_pts = p_block->i_pts;
+ p_sys->i_previous_dts = p_sys->i_current_dts;
+ p_sys->i_current_dts = p_block->i_dts;
+ }
+
+ p_sys->i_current_rate = p_block->i_rate;
+
+ mpeg2_buffer( p_sys->p_mpeg2dec, p_block->p_buffer,
+ p_block->p_buffer + p_block->i_buffer );
+
+ p_block->i_buffer = 0;
+ break;
+
+#ifdef STATE_SEQUENCE_MODIFIED
+ case STATE_SEQUENCE_MODIFIED:
+ GetAR( p_dec );
+ break;
+#endif
+
+ case STATE_SEQUENCE:
+ {
+ /* Initialize video output */
+ uint8_t *buf[3];
+ buf[0] = buf[1] = buf[2] = NULL;
+
+ GetAR( p_dec );
+
+ mpeg2_custom_fbuf( p_sys->p_mpeg2dec, 1 );
+
+ /* Set the first 2 reference frames */
+ mpeg2_set_buf( p_sys->p_mpeg2dec, buf, NULL );
+
+ if( (p_pic = GetNewPicture( p_dec, buf )) == NULL )
+ {
+ block_Release( p_block );
+ return NULL;
+ }
+
+ mpeg2_set_buf( p_sys->p_mpeg2dec, buf, p_pic );
+ mpeg2_stride( p_sys->p_mpeg2dec, p_pic->format.i_width );
+
+ /* This picture will never go through display_picture. */
+ p_pic->date = 0;
+
+ /* For some reason, libmpeg2 will put this pic twice in
+ * discard_picture. This can be considered a bug in libmpeg2. */
+ p_dec->pf_picture_link( p_dec, p_pic );
+
+ if( p_sys->p_synchro )
+ {
+ vout_SynchroRelease( p_sys->p_synchro );
+ }
+ p_sys->p_synchro = vout_SynchroInit( p_dec,
+ (uint32_t)((uint64_t)1001000000 * 27 /
+ p_sys->p_info->sequence->frame_period) );
+ p_sys->b_after_sequence_header = 1;
+ }
+ break;
+
+ case STATE_PICTURE_2ND:
+ p_sys->b_second_field = 1;
+ break;
+
+ case STATE_PICTURE:
+ {
+ uint8_t *buf[3];
+ mtime_t i_pts, i_dts;
+ buf[0] = buf[1] = buf[2] = NULL;
+
+ if ( p_sys->b_after_sequence_header &&
+ ((p_sys->p_info->current_picture->flags &
+ PIC_MASK_CODING_TYPE) == PIC_FLAG_CODING_TYPE_P) )
+ {
+ /* Intra-slice refresh. Simulate a blank I picture. */
+ msg_Dbg( p_dec, "intra-slice refresh stream" );
+ vout_SynchroNewPicture( p_sys->p_synchro,
+ I_CODING_TYPE, 2, 0, 0, p_sys->i_current_rate,
+ p_sys->p_info->sequence->flags & SEQ_FLAG_LOW_DELAY );
+ vout_SynchroDecode( p_sys->p_synchro );
+ vout_SynchroEnd( p_sys->p_synchro, I_CODING_TYPE, 0 );
+ p_sys->b_slice_i = 1;
+ }
+ p_sys->b_after_sequence_header = 0;
+
+#ifdef PIC_FLAG_PTS
+ i_pts = p_sys->p_info->current_picture->flags & PIC_FLAG_PTS ?
+ ( ( p_sys->p_info->current_picture->pts ==
+ (uint32_t)p_sys->i_current_pts ) ?
+ p_sys->i_current_pts : p_sys->i_previous_pts ) : 0;
+ i_dts = 0;
+
+ /* Hack to handle demuxers which only have DTS timestamps */
+ if( !i_pts && !p_block->i_pts && p_block->i_dts > 0 )
+ {
+ if( p_sys->p_info->sequence->flags & SEQ_FLAG_LOW_DELAY ||
+ (p_sys->p_info->current_picture->flags &
+ PIC_MASK_CODING_TYPE) == PIC_FLAG_CODING_TYPE_B )
+ {
+ i_pts = p_block->i_dts;
+ }
+ }
+ p_block->i_pts = p_block->i_dts = 0;
+ /* End hack */
+
+#else /* New interface */
+
+ i_pts = p_sys->p_info->current_picture->flags & PIC_FLAG_TAGS ?
+ ( ( p_sys->p_info->current_picture->tag ==
+ (uint32_t)p_sys->i_current_pts ) ?
+ p_sys->i_current_pts : p_sys->i_previous_pts ) : 0;
+ i_dts = p_sys->p_info->current_picture->flags & PIC_FLAG_TAGS ?
+ ( ( p_sys->p_info->current_picture->tag2 ==
+ (uint32_t)p_sys->i_current_dts ) ?
+ p_sys->i_current_dts : p_sys->i_previous_dts ) : 0;
+#endif
+
+ /* If nb_fields == 1, it is a field picture, and it will be
+ * followed by another field picture for which we won't call
+ * vout_SynchroNewPicture() because this would have other
+ * problems, so we take it into account here.
+ * This kind of sucks, but I didn't think better. --Meuuh
+ */
+ vout_SynchroNewPicture( p_sys->p_synchro,
+ p_sys->p_info->current_picture->flags & PIC_MASK_CODING_TYPE,
+ p_sys->p_info->current_picture->nb_fields == 1 ? 2 :
+ p_sys->p_info->current_picture->nb_fields, i_pts, i_dts,
+ p_sys->i_current_rate,
+ p_sys->p_info->sequence->flags & SEQ_FLAG_LOW_DELAY );
+
+ if( !p_dec->b_pace_control && !p_sys->b_preroll &&
+ !(p_sys->b_slice_i
+ && ((p_sys->p_info->current_picture->flags
+ & PIC_MASK_CODING_TYPE) == P_CODING_TYPE))
+ && !vout_SynchroChoose( p_sys->p_synchro,
+ p_sys->p_info->current_picture->flags
+ & PIC_MASK_CODING_TYPE,
+ /*p_sys->p_vout->render_time*/ 0 /*FIXME*/,
+ p_sys->p_info->sequence->flags & SEQ_FLAG_LOW_DELAY ) )
+ {
+ mpeg2_skip( p_sys->p_mpeg2dec, 1 );
+ p_sys->b_skip = 1;
+ vout_SynchroTrash( p_sys->p_synchro );
+ mpeg2_set_buf( p_sys->p_mpeg2dec, buf, NULL );
+ }
+ else
+ {
+ mpeg2_skip( p_sys->p_mpeg2dec, 0 );
+ p_sys->b_skip = 0;
+ vout_SynchroDecode( p_sys->p_synchro );
+
+ if( (p_pic = GetNewPicture( p_dec, buf )) == NULL )
+ {
+ block_Release( p_block );
+ return NULL;
+ }
+
+ mpeg2_set_buf( p_sys->p_mpeg2dec, buf, p_pic );
+ mpeg2_stride( p_sys->p_mpeg2dec, p_pic->format.i_width );
+ }
+ }
+ break;
+
+ case STATE_END:
+ case STATE_SLICE:
+ p_pic = NULL;
+ if( p_sys->p_info->display_fbuf
+ && p_sys->p_info->display_fbuf->id )
+ {
+ p_pic = (picture_t *)p_sys->p_info->display_fbuf->id;
+
+ vout_SynchroEnd( p_sys->p_synchro,
+ p_sys->p_info->display_picture->flags
+ & PIC_MASK_CODING_TYPE,
+ p_sys->b_garbage_pic );
+ p_sys->b_garbage_pic = 0;
+
+ if ( p_sys->p_picture_to_destroy != p_pic )
+ {
+ p_pic->date = vout_SynchroDate( p_sys->p_synchro );
+ }
+ else
+ {
+ p_sys->p_picture_to_destroy = NULL;
+ p_pic->date = 0;
+ }
+ }
+
+ if( p_sys->p_info->discard_fbuf &&
+ p_sys->p_info->discard_fbuf->id )
+ {
+ p_dec->pf_picture_unlink( p_dec,
+ p_sys->p_info->discard_fbuf->id );
+ }
+
+ /* For still frames */
+ if( state == STATE_END && p_pic ) p_pic->b_force = VLC_TRUE;
+
+ if( p_pic )
+ {
+ /* Avoid frames with identical timestamps.
+ * Especially needed for still frames in DVD menus. */
+ if( p_sys->i_last_frame_pts == p_pic->date ) p_pic->date++;
+ p_sys->i_last_frame_pts = p_pic->date;
+
+ return p_pic;
+ }
+
+ break;
+
+ case STATE_INVALID:
+ {
+ uint8_t *buf[3];
+ buf[0] = buf[1] = buf[2] = NULL;
+
+ msg_Warn( p_dec, "invalid picture encountered" );
+ if ( ( p_sys->p_info->current_picture == NULL ) ||
+ ( ( p_sys->p_info->current_picture->flags &
+ PIC_MASK_CODING_TYPE) != B_CODING_TYPE ) )
+ {
+ if( p_sys->p_synchro ) vout_SynchroReset( p_sys->p_synchro );
+ }
+ mpeg2_skip( p_sys->p_mpeg2dec, 1 );
+ p_sys->b_skip = 1;
+
+ if( p_sys->p_info->current_fbuf &&
+ p_sys->p_info->current_fbuf->id )
+ {
+ p_sys->b_garbage_pic = 1;
+ p_pic = p_sys->p_info->current_fbuf->id;
+ }
+ else if( !p_sys->p_info->sequence )
+ {
+ break;
+ }
+ else
+ {
+ if( (p_pic = GetNewPicture( p_dec, buf )) == NULL )
+ break;
+ mpeg2_set_buf( p_sys->p_mpeg2dec, buf, p_pic );
+ mpeg2_stride( p_sys->p_mpeg2dec, p_pic->format.i_width );
+ }
+ p_sys->p_picture_to_destroy = p_pic;
+
+ memset( p_pic->p[0].p_pixels, 0,
+ p_sys->p_info->sequence->width
+ * p_sys->p_info->sequence->height );
+ memset( p_pic->p[1].p_pixels, 0x80,
+ p_sys->p_info->sequence->width
+ * p_sys->p_info->sequence->height / 4 );
+ memset( p_pic->p[2].p_pixels, 0x80,
+ p_sys->p_info->sequence->width
+ * p_sys->p_info->sequence->height / 4 );
+
+ if( p_sys->b_slice_i )
+ {
+ vout_SynchroNewPicture( p_sys->p_synchro,
+ I_CODING_TYPE, 2, 0, 0, p_sys->i_current_rate,
+ p_sys->p_info->sequence->flags & SEQ_FLAG_LOW_DELAY );
+ vout_SynchroDecode( p_sys->p_synchro );
+ vout_SynchroEnd( p_sys->p_synchro, I_CODING_TYPE, 0 );
+ }
+ break;
+ }
+
+ default:
+ break;
+ }
+ }
+
+ /* Never reached */
+ return NULL;
+}
+
+/*****************************************************************************
+ * CloseDecoder: libmpeg2 decoder destruction
+ *****************************************************************************/
+static void CloseDecoder( vlc_object_t *p_this )
+{
+ decoder_t *p_dec = (decoder_t *)p_this;
+ decoder_sys_t *p_sys = p_dec->p_sys;
+
+ if( p_sys->p_synchro ) vout_SynchroRelease( p_sys->p_synchro );
+
+ if( p_sys->p_mpeg2dec ) mpeg2_close( p_sys->p_mpeg2dec );
+
+ free( p_sys );
+}
+
+/*****************************************************************************
+ * GetNewPicture: Get a new picture from the vout and set the buf struct
+ *****************************************************************************/
+static picture_t *GetNewPicture( decoder_t *p_dec, uint8_t **pp_buf )
+{
+ decoder_sys_t *p_sys = p_dec->p_sys;
+ picture_t *p_pic;
+
+ p_dec->fmt_out.video.i_width = p_sys->p_info->sequence->width;
+ p_dec->fmt_out.video.i_visible_width =
+ p_sys->p_info->sequence->picture_width;
+ p_dec->fmt_out.video.i_height = p_sys->p_info->sequence->height;
+ p_dec->fmt_out.video.i_visible_height =
+ p_sys->p_info->sequence->picture_height;
+ p_dec->fmt_out.video.i_aspect = p_sys->i_aspect;
+ p_dec->fmt_out.video.i_sar_num = p_sys->i_sar_num;
+ p_dec->fmt_out.video.i_sar_den = p_sys->i_sar_den;
+
+ if( p_sys->p_info->sequence->frame_period > 0 )
+ {
+ p_dec->fmt_out.video.i_frame_rate =
+ (uint32_t)( (uint64_t)1001000000 * 27 /
+ p_sys->p_info->sequence->frame_period );
+ p_dec->fmt_out.video.i_frame_rate_base = 1001;
+ }
+
+ p_dec->fmt_out.i_codec =
+ ( p_sys->p_info->sequence->chroma_height <
+ p_sys->p_info->sequence->height ) ?
+ VLC_FOURCC('I','4','2','0') : VLC_FOURCC('I','4','2','2');
+
+ /* Get a new picture */
+ p_pic = p_dec->pf_vout_buffer_new( p_dec );
+
+ if( p_pic == NULL ) return NULL;
+
+ p_pic->b_progressive = p_sys->p_info->current_picture != NULL ?
+ p_sys->p_info->current_picture->flags & PIC_FLAG_PROGRESSIVE_FRAME : 1;
+ p_pic->b_top_field_first = p_sys->p_info->current_picture != NULL ?
+ p_sys->p_info->current_picture->flags & PIC_FLAG_TOP_FIELD_FIRST : 1;
+ p_pic->i_nb_fields = p_sys->p_info->current_picture != NULL ?
+ p_sys->p_info->current_picture->nb_fields : 2;
+
+ p_dec->pf_picture_link( p_dec, p_pic );
+
+ pp_buf[0] = p_pic->p[0].p_pixels;
+ pp_buf[1] = p_pic->p[1].p_pixels;
+ pp_buf[2] = p_pic->p[2].p_pixels;
+
+ return p_pic;
+}
+
+/*****************************************************************************
+ * GetAR: Get aspect ratio
+ *****************************************************************************/
+static void GetAR( decoder_t *p_dec )
+{
+ decoder_sys_t *p_sys = p_dec->p_sys;
+
+ /* Check whether the input gave a particular aspect ratio */
+ if( p_dec->fmt_in.video.i_aspect )
+ {
+ p_sys->i_aspect = p_dec->fmt_in.video.i_aspect;
+ if( p_sys->i_aspect <= AR_221_1_PICTURE )
+ switch( p_sys->i_aspect )
+ {
+ case AR_4_3_PICTURE:
+ p_sys->i_aspect = VOUT_ASPECT_FACTOR * 4 / 3;
+ p_sys->i_sar_num = p_sys->p_info->sequence->picture_height * 4;
+ p_sys->i_sar_den = p_sys->p_info->sequence->picture_width * 3;
+ break;
+ case AR_16_9_PICTURE:
+ p_sys->i_aspect = VOUT_ASPECT_FACTOR * 16 / 9;
+ p_sys->i_sar_num = p_sys->p_info->sequence->picture_height * 16;
+ p_sys->i_sar_den = p_sys->p_info->sequence->picture_width * 9;
+ break;
+ case AR_221_1_PICTURE:
+ p_sys->i_aspect = VOUT_ASPECT_FACTOR * 221 / 100;
+ p_sys->i_sar_num = p_sys->p_info->sequence->picture_height * 221;
+ p_sys->i_sar_den = p_sys->p_info->sequence->picture_width * 100;
+ break;
+ case AR_SQUARE_PICTURE:
+ p_sys->i_aspect = VOUT_ASPECT_FACTOR *
+ p_sys->p_info->sequence->picture_width /
+ p_sys->p_info->sequence->picture_height;
+ p_sys->i_sar_num = p_sys->i_sar_den = 1;
+ break;
+ }
+ }
+ else
+ {
+ /* Use the value provided in the MPEG sequence header */
+ if( p_sys->p_info->sequence->pixel_height > 0 )
+ {
+ p_sys->i_aspect =
+ ((uint64_t)p_sys->p_info->sequence->picture_width) *
+ p_sys->p_info->sequence->pixel_width *
+ VOUT_ASPECT_FACTOR /
+ p_sys->p_info->sequence->picture_height /
+ p_sys->p_info->sequence->pixel_height;
+ p_sys->i_sar_num = p_sys->p_info->sequence->pixel_width;
+ p_sys->i_sar_den = p_sys->p_info->sequence->pixel_height;
+ }
+ else
+ {
+ /* Invalid aspect, assume 4:3.
+ * This shouldn't happen and if it does it is a bug
+ * in libmpeg2 (likely triggered by an invalid stream) */
+ p_sys->i_aspect = VOUT_ASPECT_FACTOR * 4 / 3;
+ p_sys->i_sar_num = p_sys->p_info->sequence->picture_height * 4;
+ p_sys->i_sar_den = p_sys->p_info->sequence->picture_width * 3;
+ }
+ }
+
+ msg_Dbg( p_dec, "%dx%d (display %d,%d), aspect %d, sar %i:%i, %u.%03u fps",
+ p_sys->p_info->sequence->picture_width,
+ p_sys->p_info->sequence->picture_height,
+ p_sys->p_info->sequence->display_width,
+ p_sys->p_info->sequence->display_height,
+ p_sys->i_aspect, p_sys->i_sar_num, p_sys->i_sar_den,
+ (uint32_t)((uint64_t)1001000000 * 27 /
+ p_sys->p_info->sequence->frame_period / 1001),
+ (uint32_t)((uint64_t)1001000000 * 27 /
+ p_sys->p_info->sequence->frame_period % 1001) );
+}
projects / vlc / blobdiff