Commit 3fac9782 authored by Derk-Jan Hartman's avatar Derk-Jan Hartman

libmpeg2: Fix Closed Captions in GOP.

This fixes a case where our libmpeg2 module was not extracting
Closed Captions from the user_data, when this user_data was in the
GOP header, instead of in the picture header. This information is
retained until the next picture (date) is handled.

See sample "bob-dvd-closedcaptioning works in ffmpeg but not in libmpeg2.ts"
parent 22f452d0
......@@ -82,6 +82,8 @@ struct decoder_sys_t
mtime_t i_cc_pts;
mtime_t i_cc_dts;
cc_data_t cc;
uint8_t *p_gop_user_data;
uint32_t i_gop_user_data;
};
/*****************************************************************************
......@@ -154,6 +156,8 @@ static int OpenDecoder( vlc_object_t *p_this )
p_dec->pf_get_cc = GetCc;
cc_Init( &p_sys->cc );
#endif
p_sys->p_gop_user_data = NULL;
p_sys->i_gop_user_data = 0;
#if defined( __i386__ ) || defined( __x86_64__ )
if( vlc_CPU() & CPU_CAPABILITY_MMX )
......@@ -464,7 +468,7 @@ static picture_t *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
mpeg2_set_buf( p_sys->p_mpeg2dec, buf, p_pic );
mpeg2_stride( p_sys->p_mpeg2dec, p_pic->p[Y_PLANE].i_pitch );
}
if( p_sys->p_info->user_data_len > 2 )
if( p_sys->p_info->user_data_len > 2 || p_sys->i_gop_user_data > 2 )
{
p_sys->i_cc_pts = i_pts;
p_sys->i_cc_dts = i_dts;
......@@ -476,11 +480,34 @@ static picture_t *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
p_sys->i_cc_flags = BLOCK_FLAG_TYPE_B;
else p_sys->i_cc_flags = BLOCK_FLAG_TYPE_I;
cc_Extract( &p_sys->cc, &p_sys->p_info->user_data[0], p_sys->p_info->user_data_len );
if( p_sys->i_gop_user_data > 2 )
{
/* We now have picture info for any cached user_data out of the gop */
cc_Extract( &p_sys->cc, &p_sys->p_gop_user_data[0], p_sys->i_gop_user_data );
p_sys->i_gop_user_data = 0;
}
/* Extract the CC from the user_data of the picture */
if( p_sys->p_info->user_data_len > 2 )
cc_Extract( &p_sys->cc, &p_sys->p_info->user_data[0], p_sys->p_info->user_data_len );
}
}
break;
case STATE_GOP:
/* There can be userdata in a GOP. It needs to be remembered for the next picture. */
if( p_sys->p_info->user_data_len > 2 )
{
free( p_sys->p_gop_user_data );
p_sys->p_gop_user_data = calloc( p_sys->p_info->user_data_len, sizeof(uint8_t) );
if( p_sys->p_gop_user_data )
{
p_sys->i_gop_user_data = p_sys->p_info->user_data_len;
memcpy( p_sys->p_gop_user_data, p_sys->p_info->user_data, p_sys->p_info->user_data_len );
}
}
break;
case STATE_END:
case STATE_SLICE:
p_pic = NULL;
......@@ -600,6 +627,8 @@ 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;
free( p_sys->p_gop_user_data );
if( p_sys->p_synchro ) decoder_SynchroRelease( p_sys->p_synchro );
if( p_sys->p_mpeg2dec ) mpeg2_close( p_sys->p_mpeg2dec );
......
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