2004-04-22 05:02:05 +02:00
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/*****************************************************************************
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* h264.c: h264/avc video packetizer
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*****************************************************************************
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* Copyright (C) 2001, 2002 VideoLAN
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2004-04-23 18:06:57 +02:00
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* $Id$
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2004-04-22 05:02:05 +02:00
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*
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* Authors: Laurent Aimar <fenrir@via.ecp.fr>
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* Eric Petit <titer@videolan.org>
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2004-08-23 12:09:52 +02:00
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* Gildas Bazin <gbazin@videolan.org>
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2004-04-22 05:02:05 +02:00
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
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*****************************************************************************/
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/*****************************************************************************
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* Preamble
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*****************************************************************************/
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#include <stdlib.h> /* malloc(), free() */
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#include <vlc/vlc.h>
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#include <vlc/decoder.h>
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#include <vlc/sout.h>
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#include "vlc_block_helper.h"
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#include "vlc_bits.h"
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/*****************************************************************************
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* Module descriptor
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*****************************************************************************/
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static int Open ( vlc_object_t * );
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static void Close( vlc_object_t * );
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vlc_module_begin();
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2004-12-11 15:45:46 +01:00
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set_category( CAT_SOUT );
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set_subcategory( SUBCAT_SOUT_PACKETIZER );
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2004-04-22 05:02:05 +02:00
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set_description( _("H264 video packetizer") );
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set_capability( "packetizer", 50 );
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set_callbacks( Open, Close );
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vlc_module_end();
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/****************************************************************************
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* Local prototypes
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****************************************************************************/
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static block_t *Packetize( decoder_t *, block_t ** );
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2004-05-15 13:06:28 +02:00
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static block_t *PacketizeAVC1( decoder_t *, block_t ** );
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2004-04-22 05:02:05 +02:00
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struct decoder_sys_t
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{
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block_bytestream_t bytestream;
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int i_state;
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int i_offset;
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uint8_t startcode[4];
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vlc_bool_t b_slice;
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block_t *p_frame;
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vlc_bool_t b_sps;
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2005-04-06 11:35:45 +02:00
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vlc_bool_t b_pps;
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2004-05-15 13:06:28 +02:00
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/* avcC data */
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int i_avcC_length_size;
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2004-08-23 12:09:52 +02:00
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/* Useful values of the Sequence Parameter Set */
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int i_log2_max_frame_num;
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int b_frame_mbs_only;
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/* Useful values of the Slice Header */
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int i_nal_type;
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2004-10-20 19:44:36 +02:00
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int i_nal_ref_idc;
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2004-08-23 12:09:52 +02:00
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int i_idr_pic_id;
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int i_frame_num;
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2004-04-22 05:02:05 +02:00
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};
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enum
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{
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STATE_NOSYNC,
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STATE_NEXT_SYNC,
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};
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enum nal_unit_type_e
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{
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NAL_UNKNOWN = 0,
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NAL_SLICE = 1,
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NAL_SLICE_DPA = 2,
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NAL_SLICE_DPB = 3,
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NAL_SLICE_DPC = 4,
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NAL_SLICE_IDR = 5, /* ref_idc != 0 */
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NAL_SEI = 6, /* ref_idc == 0 */
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NAL_SPS = 7,
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2005-04-06 11:31:38 +02:00
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NAL_PPS = 8,
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NAL_AU_DELIMITER= 9
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2004-04-22 05:02:05 +02:00
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/* ref_idc == 0 for 6,9,10,11,12 */
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};
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enum nal_priority_e
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{
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NAL_PRIORITY_DISPOSABLE = 0,
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NAL_PRIORITY_LOW = 1,
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NAL_PRIORITY_HIGH = 2,
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NAL_PRIORITY_HIGHEST = 3,
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};
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static block_t *ParseNALBlock( decoder_t *, block_t * );
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2004-06-16 21:35:33 +02:00
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static block_t *nal_get_annexeb( decoder_t *, uint8_t *p, int );
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2004-05-15 13:06:28 +02:00
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2004-04-22 05:02:05 +02:00
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/*****************************************************************************
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* Open: probe the packetizer and return score
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*****************************************************************************/
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static int Open( vlc_object_t *p_this )
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{
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decoder_t *p_dec = (decoder_t*)p_this;
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decoder_sys_t *p_sys;
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if( p_dec->fmt_in.i_codec != VLC_FOURCC( 'h', '2', '6', '4') &&
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2004-05-15 13:06:28 +02:00
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p_dec->fmt_in.i_codec != VLC_FOURCC( 'H', '2', '6', '4') &&
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2004-06-06 21:02:02 +02:00
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p_dec->fmt_in.i_codec != VLC_FOURCC( 'V', 'S', 'S', 'H') &&
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p_dec->fmt_in.i_codec != VLC_FOURCC( 'v', 's', 's', 'h') &&
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2004-08-23 12:09:52 +02:00
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( p_dec->fmt_in.i_codec != VLC_FOURCC( 'a', 'v', 'c', '1') ||
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p_dec->fmt_in.i_extra < 7 ) )
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2004-04-22 05:02:05 +02:00
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{
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return VLC_EGENERIC;
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}
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/* Allocate the memory needed to store the decoder's structure */
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if( ( p_dec->p_sys = p_sys = malloc( sizeof(decoder_sys_t) ) ) == NULL )
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{
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msg_Err( p_dec, "out of memory" );
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return VLC_EGENERIC;
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}
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p_sys->i_state = STATE_NOSYNC;
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p_sys->i_offset = 0;
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p_sys->startcode[0] = 0;
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p_sys->startcode[1] = 0;
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p_sys->startcode[2] = 0;
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p_sys->startcode[3] = 1;
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p_sys->bytestream = block_BytestreamInit( p_dec );
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p_sys->b_slice = VLC_FALSE;
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p_sys->p_frame = NULL;
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p_sys->b_sps = VLC_FALSE;
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2005-04-06 11:35:45 +02:00
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p_sys->b_pps = VLC_FALSE;
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2004-04-22 05:02:05 +02:00
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2004-08-23 12:09:52 +02:00
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p_sys->i_nal_type = -1;
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2004-10-20 19:44:36 +02:00
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p_sys->i_nal_ref_idc = -1;
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2004-08-23 12:09:52 +02:00
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p_sys->i_idr_pic_id = -1;
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p_sys->i_frame_num = -1;
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2004-04-22 05:02:05 +02:00
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/* Setup properties */
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es_format_Copy( &p_dec->fmt_out, &p_dec->fmt_in );
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p_dec->fmt_out.i_codec = VLC_FOURCC( 'h', '2', '6', '4' );
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2004-10-20 19:44:36 +02:00
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/* FIXME: FFMPEG isn't happy at all if you leave this */
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if( p_dec->fmt_out.i_extra ) free( p_dec->fmt_out.p_extra );
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p_dec->fmt_out.i_extra = 0; p_dec->fmt_out.p_extra = 0;
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2004-04-22 05:02:05 +02:00
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2004-05-15 13:06:28 +02:00
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if( p_dec->fmt_in.i_codec == VLC_FOURCC( 'a', 'v', 'c', '1' ) )
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2004-04-22 05:02:05 +02:00
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{
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2004-05-15 13:06:28 +02:00
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uint8_t *p = &((uint8_t*)p_dec->fmt_in.p_extra)[4];
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int i_sps, i_pps;
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int i;
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/* Parse avcC */
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p_sys->i_avcC_length_size = 1 + ((*p++)&0x03);
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/* Read SPS */
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i_sps = (*p++)&0x1f;
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for( i = 0; i < i_sps; i++ )
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{
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int i_length = GetWBE( p );
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2004-10-22 13:11:27 +02:00
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block_t *p_sps = nal_get_annexeb( p_dec, p + 2, i_length );
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2004-05-15 13:06:28 +02:00
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ParseNALBlock( p_dec, p_sps );
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p += 2 + i_length;
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}
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/* Read PPS */
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i_pps = *p++;
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for( i = 0; i < i_pps; i++ )
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{
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int i_length = GetWBE( p );
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2004-10-22 13:11:27 +02:00
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block_t *p_pps = nal_get_annexeb( p_dec, p + 2, i_length );
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2004-05-15 13:06:28 +02:00
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ParseNALBlock( p_dec, p_pps );
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p += 2 + i_length;
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}
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msg_Dbg( p_dec, "avcC length size=%d sps=%d pps=%d",
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p_sys->i_avcC_length_size, i_sps, i_pps );
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/* Set callback */
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p_dec->pf_packetize = PacketizeAVC1;
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2004-04-22 05:02:05 +02:00
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}
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else
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{
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2004-05-15 13:06:28 +02:00
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/* Set callback */
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p_dec->pf_packetize = Packetize;
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2004-04-22 05:02:05 +02:00
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}
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return VLC_SUCCESS;
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}
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/*****************************************************************************
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* Close: clean up the packetizer
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*****************************************************************************/
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static void Close( vlc_object_t *p_this )
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{
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decoder_t *p_dec = (decoder_t*)p_this;
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decoder_sys_t *p_sys = p_dec->p_sys;
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block_BytestreamRelease( &p_sys->bytestream );
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free( p_sys );
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}
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/****************************************************************************
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* Packetize: the whole thing
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****************************************************************************/
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static block_t *Packetize( decoder_t *p_dec, block_t **pp_block )
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{
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decoder_sys_t *p_sys = p_dec->p_sys;
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block_t *p_pic;
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if( !pp_block || !*pp_block ) return NULL;
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block_BytestreamPush( &p_sys->bytestream, *pp_block );
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for( ;; )
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{
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switch( p_sys->i_state )
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{
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case STATE_NOSYNC:
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if( block_FindStartcodeFromOffset( &p_sys->bytestream,
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2004-10-20 19:44:36 +02:00
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&p_sys->i_offset, p_sys->startcode+1, 3 ) == VLC_SUCCESS)
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2004-04-22 05:02:05 +02:00
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{
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p_sys->i_state = STATE_NEXT_SYNC;
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}
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if( p_sys->i_offset )
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{
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block_SkipBytes( &p_sys->bytestream, p_sys->i_offset );
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p_sys->i_offset = 0;
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block_BytestreamFlush( &p_sys->bytestream );
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}
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if( p_sys->i_state != STATE_NEXT_SYNC )
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{
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/* Need more data */
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return NULL;
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}
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p_sys->i_offset = 1; /* To find next startcode */
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case STATE_NEXT_SYNC:
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/* Find the next startcode */
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if( block_FindStartcodeFromOffset( &p_sys->bytestream,
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2004-10-20 19:44:36 +02:00
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&p_sys->i_offset, p_sys->startcode, 3 ) != VLC_SUCCESS)
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2004-04-22 05:02:05 +02:00
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{
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2004-10-20 19:44:36 +02:00
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if( block_FindStartcodeFromOffset( &p_sys->bytestream,
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&p_sys->i_offset, p_sys->startcode+1, 3 ) !=
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VLC_SUCCESS )
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{
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/* Need more data */
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return NULL;
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}
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2004-04-22 05:02:05 +02:00
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}
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/* Get the new fragment and set the pts/dts */
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p_pic = block_New( p_dec, p_sys->i_offset );
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p_pic->i_pts = p_sys->bytestream.p_block->i_pts;
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p_pic->i_dts = p_sys->bytestream.p_block->i_dts;
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block_GetBytes( &p_sys->bytestream, p_pic->p_buffer,
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p_pic->i_buffer );
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p_sys->i_offset = 0;
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/* Parse the NAL */
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if( !( p_pic = ParseNALBlock( p_dec, p_pic ) ) )
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{
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p_sys->i_state = STATE_NOSYNC;
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break;
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}
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2005-04-06 11:31:38 +02:00
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#if 0
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msg_Dbg( p_dec, "pts="I64Fd" dts="I64Fd,
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p_pic->i_pts, p_pic->i_dts );
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#endif
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2004-04-22 05:02:05 +02:00
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/* So p_block doesn't get re-added several times */
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*pp_block = block_BytestreamPop( &p_sys->bytestream );
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p_sys->i_state = STATE_NOSYNC;
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return p_pic;
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}
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}
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}
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2004-05-15 13:06:28 +02:00
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/****************************************************************************
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* PacketizeAVC1: the whole thing
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****************************************************************************/
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static block_t *PacketizeAVC1( decoder_t *p_dec, block_t **pp_block )
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{
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decoder_sys_t *p_sys = p_dec->p_sys;
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block_t *p_block;
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block_t *p_ret = NULL;
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uint8_t *p;
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if( !pp_block || !*pp_block ) return NULL;
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p_block = *pp_block;
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*pp_block = NULL;
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for( p = p_block->p_buffer; p < &p_block->p_buffer[p_block->i_buffer]; )
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{
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block_t *p_pic;
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int i_size = 0;
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int i;
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for( i = 0; i < p_sys->i_avcC_length_size; i++ )
|
|
|
|
{
|
|
|
|
i_size = (i_size << 8) | (*p++);
|
|
|
|
}
|
|
|
|
|
|
|
|
if( i_size > 0 )
|
|
|
|
{
|
2004-06-16 21:35:33 +02:00
|
|
|
block_t *p_part = nal_get_annexeb( p_dec, p, i_size );
|
2004-05-15 13:06:28 +02:00
|
|
|
|
|
|
|
p_part->i_dts = p_block->i_dts;
|
|
|
|
p_part->i_pts = p_block->i_pts;
|
2004-08-23 12:09:52 +02:00
|
|
|
|
2004-05-15 13:06:28 +02:00
|
|
|
/* Parse the NAL */
|
|
|
|
if( ( p_pic = ParseNALBlock( p_dec, p_part ) ) )
|
|
|
|
{
|
|
|
|
block_ChainAppend( &p_ret, p_pic );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
p += i_size;
|
|
|
|
}
|
|
|
|
|
|
|
|
return p_ret;
|
|
|
|
}
|
|
|
|
|
2004-06-16 21:35:33 +02:00
|
|
|
static block_t *nal_get_annexeb( decoder_t *p_dec, uint8_t *p, int i_size )
|
2004-05-15 13:06:28 +02:00
|
|
|
{
|
|
|
|
block_t *p_nal;
|
|
|
|
|
2004-10-20 19:44:36 +02:00
|
|
|
p_nal = block_New( p_dec, 3 + i_size );
|
2004-05-15 13:06:28 +02:00
|
|
|
|
2004-06-16 21:35:33 +02:00
|
|
|
/* Add start code */
|
|
|
|
p_nal->p_buffer[0] = 0x00;
|
|
|
|
p_nal->p_buffer[1] = 0x00;
|
2004-10-20 19:44:36 +02:00
|
|
|
p_nal->p_buffer[2] = 0x01;
|
2004-08-23 12:09:52 +02:00
|
|
|
|
2004-06-16 21:35:33 +02:00
|
|
|
/* Copy nalu */
|
2004-10-20 19:44:36 +02:00
|
|
|
memcpy( &p_nal->p_buffer[3], p, i_size );
|
2004-05-15 13:06:28 +02:00
|
|
|
|
|
|
|
return p_nal;
|
|
|
|
}
|
|
|
|
|
2004-08-23 12:09:52 +02:00
|
|
|
static void nal_get_decoded( uint8_t **pp_ret, int *pi_ret,
|
|
|
|
uint8_t *src, int i_src )
|
2004-04-22 05:02:05 +02:00
|
|
|
{
|
|
|
|
uint8_t *end = &src[i_src];
|
|
|
|
uint8_t *dst = malloc( i_src );
|
|
|
|
|
|
|
|
*pp_ret = dst;
|
|
|
|
|
|
|
|
while( src < end )
|
|
|
|
{
|
2004-08-23 12:09:52 +02:00
|
|
|
if( src < end - 3 && src[0] == 0x00 && src[1] == 0x00 &&
|
|
|
|
src[2] == 0x03 )
|
2004-04-22 05:02:05 +02:00
|
|
|
{
|
|
|
|
*dst++ = 0x00;
|
|
|
|
*dst++ = 0x00;
|
|
|
|
|
|
|
|
src += 3;
|
2004-04-23 18:06:57 +02:00
|
|
|
continue;
|
2004-04-22 05:02:05 +02:00
|
|
|
}
|
|
|
|
*dst++ = *src++;
|
|
|
|
}
|
|
|
|
|
|
|
|
*pi_ret = dst - *pp_ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline int bs_read_ue( bs_t *s )
|
|
|
|
{
|
|
|
|
int i = 0;
|
|
|
|
|
|
|
|
while( bs_read1( s ) == 0 && s->p < s->p_end && i < 32 )
|
|
|
|
{
|
|
|
|
i++;
|
|
|
|
}
|
|
|
|
return( ( 1 << i) - 1 + bs_read( s, i ) );
|
|
|
|
}
|
2004-08-23 12:09:52 +02:00
|
|
|
|
2004-05-15 13:06:28 +02:00
|
|
|
static inline int bs_read_se( bs_t *s )
|
2004-04-22 05:02:05 +02:00
|
|
|
{
|
|
|
|
int val = bs_read_ue( s );
|
|
|
|
|
|
|
|
return val&0x01 ? (val+1)/2 : -(val/2);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static block_t *ParseNALBlock( decoder_t *p_dec, block_t *p_frag )
|
|
|
|
{
|
|
|
|
decoder_sys_t *p_sys = p_dec->p_sys;
|
|
|
|
block_t *p_pic = NULL;
|
|
|
|
|
2004-10-20 19:44:36 +02:00
|
|
|
const int i_nal_ref_idc = (p_frag->p_buffer[3] >> 5)&0x03;
|
|
|
|
const int i_nal_type = p_frag->p_buffer[3]&0x1f;
|
2004-04-22 05:02:05 +02:00
|
|
|
|
2005-04-06 11:31:38 +02:00
|
|
|
#define OUTPUT \
|
|
|
|
do { \
|
|
|
|
p_pic = block_ChainGather( p_sys->p_frame ); \
|
|
|
|
p_pic->i_length = 0; /* FIXME */ \
|
|
|
|
\
|
|
|
|
p_sys->p_frame = NULL; \
|
|
|
|
p_sys->b_slice = VLC_FALSE; \
|
|
|
|
} while(0)
|
|
|
|
|
|
|
|
|
2004-08-23 12:09:52 +02:00
|
|
|
if( p_sys->b_slice && !p_sys->b_sps )
|
2004-04-22 05:02:05 +02:00
|
|
|
{
|
2004-08-23 12:09:52 +02:00
|
|
|
block_ChainRelease( p_sys->p_frame );
|
|
|
|
msg_Warn( p_dec, "waiting for SPS" );
|
2004-04-22 05:02:05 +02:00
|
|
|
|
2004-08-23 12:09:52 +02:00
|
|
|
/* Reset context */
|
2004-04-22 05:02:05 +02:00
|
|
|
p_sys->p_frame = NULL;
|
|
|
|
p_sys->b_slice = VLC_FALSE;
|
|
|
|
}
|
|
|
|
|
2004-08-23 12:09:52 +02:00
|
|
|
if( !p_sys->b_sps &&
|
|
|
|
i_nal_type >= NAL_SLICE && i_nal_type <= NAL_SLICE_IDR )
|
|
|
|
{
|
|
|
|
p_sys->b_slice = VLC_TRUE;
|
|
|
|
/* Fragment will be discarded later on */
|
|
|
|
}
|
|
|
|
else if( i_nal_type >= NAL_SLICE && i_nal_type <= NAL_SLICE_IDR )
|
2004-04-22 05:02:05 +02:00
|
|
|
{
|
|
|
|
uint8_t *dec;
|
2004-08-23 12:09:52 +02:00
|
|
|
int i_dec, i_first_mb, i_slice_type, i_frame_num, i_pic_flags = 0;
|
|
|
|
vlc_bool_t b_pic = VLC_FALSE;
|
2004-04-22 05:02:05 +02:00
|
|
|
bs_t s;
|
|
|
|
|
|
|
|
/* do not convert the whole frame */
|
2004-10-20 19:44:36 +02:00
|
|
|
nal_get_decoded( &dec, &i_dec, &p_frag->p_buffer[4],
|
|
|
|
__MIN( p_frag->i_buffer - 4, 60 ) );
|
2004-04-22 05:02:05 +02:00
|
|
|
bs_init( &s, dec, i_dec );
|
|
|
|
|
2004-08-23 12:09:52 +02:00
|
|
|
/* first_mb_in_slice */
|
|
|
|
i_first_mb = bs_read_ue( &s );
|
|
|
|
|
|
|
|
/* slice_type */
|
|
|
|
switch( (i_slice_type = bs_read_ue( &s )) )
|
2004-04-22 05:02:05 +02:00
|
|
|
{
|
|
|
|
case 0: case 5:
|
2004-08-23 12:09:52 +02:00
|
|
|
i_pic_flags = BLOCK_FLAG_TYPE_P;
|
2004-04-22 05:02:05 +02:00
|
|
|
break;
|
|
|
|
case 1: case 6:
|
2004-08-23 12:09:52 +02:00
|
|
|
i_pic_flags = BLOCK_FLAG_TYPE_B;
|
2004-04-22 05:02:05 +02:00
|
|
|
break;
|
|
|
|
case 2: case 7:
|
2004-08-23 12:09:52 +02:00
|
|
|
i_pic_flags = BLOCK_FLAG_TYPE_I;
|
2004-04-22 05:02:05 +02:00
|
|
|
break;
|
|
|
|
case 3: case 8: /* SP */
|
2004-08-23 12:09:52 +02:00
|
|
|
i_pic_flags = BLOCK_FLAG_TYPE_P;
|
2004-04-22 05:02:05 +02:00
|
|
|
break;
|
|
|
|
case 4: case 9:
|
2004-08-23 12:09:52 +02:00
|
|
|
i_pic_flags = BLOCK_FLAG_TYPE_I;
|
2004-04-22 05:02:05 +02:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2004-08-23 12:09:52 +02:00
|
|
|
/* pic_parameter_set_id */
|
|
|
|
bs_read_ue( &s );
|
|
|
|
/* frame_num */
|
|
|
|
i_frame_num = bs_read( &s, p_sys->i_log2_max_frame_num + 4 );
|
|
|
|
|
2004-10-20 19:44:36 +02:00
|
|
|
/* Detection of the first VCL NAL unit of a primary coded picture
|
|
|
|
* (cf. 7.4.1.2.4) */
|
|
|
|
if( i_frame_num != p_sys->i_frame_num ||
|
|
|
|
( (i_nal_ref_idc != p_sys->i_nal_ref_idc) &&
|
|
|
|
(!i_nal_ref_idc || !p_sys->i_nal_ref_idc) ) )
|
2004-08-23 12:09:52 +02:00
|
|
|
{
|
|
|
|
b_pic = VLC_TRUE;
|
|
|
|
}
|
|
|
|
p_sys->i_frame_num = i_frame_num;
|
2004-10-20 19:44:36 +02:00
|
|
|
p_sys->i_nal_ref_idc = i_nal_ref_idc;
|
2004-08-23 12:09:52 +02:00
|
|
|
|
|
|
|
if( !p_sys->b_frame_mbs_only )
|
|
|
|
{
|
|
|
|
/* field_pic_flag */
|
|
|
|
if( bs_read( &s, 1 ) )
|
|
|
|
{
|
|
|
|
/* bottom_field_flag */
|
|
|
|
bs_read( &s, 1 );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if( i_nal_type == NAL_SLICE_IDR )
|
|
|
|
{
|
|
|
|
/* id_pic_id */
|
|
|
|
int i_idr_pic_id = bs_read_ue( &s );
|
|
|
|
if( p_sys->i_nal_type != i_nal_type ) b_pic = VLC_TRUE;
|
|
|
|
if( p_sys->i_idr_pic_id != i_idr_pic_id ) b_pic = VLC_TRUE;
|
|
|
|
p_sys->i_idr_pic_id = i_idr_pic_id;
|
|
|
|
}
|
|
|
|
p_sys->i_nal_type = i_nal_type;
|
|
|
|
|
|
|
|
if( b_pic && p_sys->b_slice )
|
2005-04-06 11:31:38 +02:00
|
|
|
OUTPUT;
|
2004-08-23 12:09:52 +02:00
|
|
|
|
|
|
|
p_sys->b_slice = VLC_TRUE;
|
|
|
|
|
2004-04-22 05:02:05 +02:00
|
|
|
free( dec );
|
|
|
|
}
|
|
|
|
else if( i_nal_type == NAL_SPS )
|
|
|
|
{
|
|
|
|
uint8_t *dec;
|
|
|
|
int i_dec;
|
|
|
|
bs_t s;
|
|
|
|
int i_tmp;
|
|
|
|
|
2005-04-06 11:35:45 +02:00
|
|
|
if( !p_sys->b_sps )
|
|
|
|
msg_Dbg( p_dec, "found NAL_SPS" );
|
2004-08-23 12:09:52 +02:00
|
|
|
|
2004-04-22 05:02:05 +02:00
|
|
|
p_sys->b_sps = VLC_TRUE;
|
|
|
|
|
2004-10-20 19:44:36 +02:00
|
|
|
nal_get_decoded( &dec, &i_dec, &p_frag->p_buffer[4],
|
|
|
|
p_frag->i_buffer - 4 );
|
2004-04-22 05:02:05 +02:00
|
|
|
|
|
|
|
bs_init( &s, dec, i_dec );
|
|
|
|
/* Skip profile(8), constraint_set012, reserver(5), level(8) */
|
|
|
|
bs_skip( &s, 8 + 1+1+1 + 5 + 8 );
|
|
|
|
/* sps id */
|
|
|
|
bs_read_ue( &s );
|
|
|
|
/* Skip i_log2_max_frame_num */
|
2004-08-23 12:09:52 +02:00
|
|
|
p_sys->i_log2_max_frame_num = bs_read_ue( &s );
|
2004-04-22 05:02:05 +02:00
|
|
|
/* Read poc_type */
|
|
|
|
i_tmp = bs_read_ue( &s );
|
|
|
|
if( i_tmp == 0 )
|
|
|
|
{
|
|
|
|
/* skip i_log2_max_poc_lsb */
|
|
|
|
bs_read_ue( &s );
|
|
|
|
}
|
|
|
|
else if( i_tmp == 1 )
|
|
|
|
{
|
|
|
|
int i_cycle;
|
|
|
|
/* skip b_delta_pic_order_always_zero */
|
|
|
|
bs_skip( &s, 1 );
|
|
|
|
/* skip i_offset_for_non_ref_pic */
|
|
|
|
bs_read_se( &s );
|
|
|
|
/* skip i_offset_for_top_to_bottom_field */
|
|
|
|
bs_read_se( &s );
|
|
|
|
/* read i_num_ref_frames_in_poc_cycle */
|
|
|
|
i_cycle = bs_read_ue( &s );
|
|
|
|
if( i_cycle > 256 ) i_cycle = 256;
|
|
|
|
while( i_cycle > 0 )
|
|
|
|
{
|
|
|
|
/* skip i_offset_for_ref_frame */
|
|
|
|
bs_read_se(&s );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
/* i_num_ref_frames */
|
|
|
|
bs_read_ue( &s );
|
|
|
|
/* b_gaps_in_frame_num_value_allowed */
|
|
|
|
bs_skip( &s, 1 );
|
|
|
|
|
|
|
|
/* Read size */
|
|
|
|
p_dec->fmt_out.video.i_width = 16 * ( bs_read_ue( &s ) + 1 );
|
|
|
|
p_dec->fmt_out.video.i_height = 16 * ( bs_read_ue( &s ) + 1 );
|
|
|
|
|
|
|
|
/* b_frame_mbs_only */
|
2004-08-23 12:09:52 +02:00
|
|
|
p_sys->b_frame_mbs_only = bs_read( &s, 1 );
|
|
|
|
if( p_sys->b_frame_mbs_only == 0 )
|
2004-04-22 05:02:05 +02:00
|
|
|
{
|
|
|
|
bs_skip( &s, 1 );
|
|
|
|
}
|
|
|
|
/* b_direct8x8_inference */
|
|
|
|
bs_skip( &s, 1 );
|
|
|
|
|
2004-10-20 19:44:36 +02:00
|
|
|
/* crop */
|
2004-04-22 05:02:05 +02:00
|
|
|
i_tmp = bs_read( &s, 1 );
|
|
|
|
if( i_tmp )
|
|
|
|
{
|
|
|
|
/* left */
|
2004-10-20 19:44:36 +02:00
|
|
|
bs_read_ue( &s );
|
2004-04-22 05:02:05 +02:00
|
|
|
/* right */
|
2004-10-20 19:44:36 +02:00
|
|
|
bs_read_ue( &s );
|
2004-04-22 05:02:05 +02:00
|
|
|
/* top */
|
2004-10-20 19:44:36 +02:00
|
|
|
bs_read_ue( &s );
|
2004-04-22 05:02:05 +02:00
|
|
|
/* bottom */
|
2004-10-20 19:44:36 +02:00
|
|
|
bs_read_ue( &s );
|
2004-04-22 05:02:05 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
/* vui */
|
|
|
|
i_tmp = bs_read( &s, 1 );
|
|
|
|
if( i_tmp )
|
|
|
|
{
|
|
|
|
/* read the aspect ratio part if any FIXME check it */
|
|
|
|
i_tmp = bs_read( &s, 1 );
|
|
|
|
if( i_tmp )
|
|
|
|
{
|
|
|
|
static const struct { int w, h; } sar[14] =
|
|
|
|
{
|
|
|
|
{ 0, 0 }, { 1, 1 }, { 12, 11 }, { 10, 11 },
|
|
|
|
{ 16, 11 }, { 40, 33 }, { 24, 11 }, { 20, 11 },
|
|
|
|
{ 32, 11 }, { 80, 33 }, { 18, 11 }, { 15, 11 },
|
|
|
|
{ 64, 33 }, { 160,99 },
|
|
|
|
};
|
|
|
|
int i_sar = bs_read( &s, 8 );
|
|
|
|
int w, h;
|
|
|
|
|
|
|
|
if( i_sar < 14 )
|
|
|
|
{
|
|
|
|
w = sar[i_sar].w;
|
|
|
|
h = sar[i_sar].h;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
w = bs_read( &s, 16 );
|
|
|
|
h = bs_read( &s, 16 );
|
|
|
|
}
|
2005-04-24 00:37:22 +02:00
|
|
|
if( h != 0 )
|
|
|
|
p_dec->fmt_out.video.i_aspect =
|
|
|
|
VOUT_ASPECT_FACTOR * w / h * p_dec->fmt_out.video.i_width /
|
|
|
|
p_dec->fmt_out.video.i_height;
|
|
|
|
else
|
|
|
|
p_dec->fmt_out.video.i_aspect = VOUT_ASPECT_FACTOR;
|
2004-04-22 05:02:05 +02:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
free( dec );
|
2005-04-06 11:31:38 +02:00
|
|
|
|
|
|
|
|
|
|
|
if( p_sys->b_slice )
|
|
|
|
OUTPUT;
|
2004-04-22 05:02:05 +02:00
|
|
|
}
|
|
|
|
else if( i_nal_type == NAL_PPS )
|
|
|
|
{
|
|
|
|
bs_t s;
|
2004-10-20 19:44:36 +02:00
|
|
|
bs_init( &s, &p_frag->p_buffer[4], p_frag->i_buffer - 4 );
|
2004-04-22 05:02:05 +02:00
|
|
|
|
2005-04-06 11:35:45 +02:00
|
|
|
if( !p_sys->b_pps )
|
|
|
|
msg_Dbg( p_dec, "found NAL_PPS" );
|
|
|
|
p_sys->b_pps = VLC_TRUE;
|
|
|
|
|
2004-04-22 05:02:05 +02:00
|
|
|
/* TODO */
|
2005-04-06 11:31:38 +02:00
|
|
|
|
|
|
|
if( p_sys->b_slice )
|
|
|
|
OUTPUT;
|
2004-04-22 05:02:05 +02:00
|
|
|
}
|
2005-04-06 11:31:38 +02:00
|
|
|
else if( i_nal_type == NAL_AU_DELIMITER ||
|
|
|
|
i_nal_type == NAL_SEI ||
|
|
|
|
( i_nal_type >= 13 && i_nal_type <= 18 ) )
|
|
|
|
{
|
|
|
|
if( p_sys->b_slice )
|
|
|
|
OUTPUT;
|
|
|
|
}
|
|
|
|
|
|
|
|
#undef OUTPUT
|
2004-04-22 05:02:05 +02:00
|
|
|
|
|
|
|
/* Append the block */
|
|
|
|
block_ChainAppend( &p_sys->p_frame, p_frag );
|
|
|
|
|
|
|
|
return p_pic;
|
|
|
|
}
|