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https://github.com/videolan/vlc.git
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* cinepak: little clean up and increase priority (ffmpeg cinepak decoder
is buggy).
This commit is contained in:
Laurent Aimar
parent
4b47be3d6e
commit
4584a5d758
@ -2,7 +2,7 @@
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* cinepak.c: cinepak video decoder
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*****************************************************************************
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* Copyright (C) 1999-2001 VideoLAN
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* $Id: cinepak.c,v 1.4 2003/11/22 23:39:14 fenrir Exp $
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* $Id: cinepak.c,v 1.5 2003/11/23 05:30:56 fenrir Exp $
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*
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* Authors: Laurent Aimar <fenrir@via.ecp.fr>
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*
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@ -28,16 +28,32 @@
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#include <vlc/vout.h>
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#include <vlc/decoder.h>
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/*****************************************************************************
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* Module descriptor
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*****************************************************************************/
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static int OpenDecoder ( vlc_object_t * );
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static void CloseDecoder( vlc_object_t * );
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vlc_module_begin();
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set_description( _("Cinepak video decoder") );
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set_capability( "decoder", 100 );
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set_callbacks( OpenDecoder, CloseDecoder );
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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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#define CINEPAK_MAXSTRIP 32
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typedef struct cinepak_codebook_s
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typedef struct
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{
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uint8_t i_y[4];
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uint8_t i_u, i_v;
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} cinepak_codebook_t;
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typedef struct cinepak_context_s
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typedef struct
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{
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int b_grayscale; /* force to grayscale */
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@ -66,27 +82,13 @@ struct decoder_sys_t
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/*
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* Cinepak properties
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*/
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cinepak_context_t *p_context;
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cinepak_context_t context;
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};
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/*****************************************************************************
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* Local prototypes
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*****************************************************************************/
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static int OpenDecoder( vlc_object_t * );
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static void CloseDecoder( vlc_object_t * );
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static picture_t *DecodeBlock ( decoder_t *, block_t ** );
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static int cinepak_decode_frame( cinepak_context_t *, int, uint8_t * );
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/*****************************************************************************
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* Module descriptor
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*****************************************************************************/
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vlc_module_begin();
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set_description( _("Cinepak video decoder") );
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set_capability( "decoder", 70 );
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set_callbacks( OpenDecoder, CloseDecoder );
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vlc_module_end();
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/*****************************************************************************
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* OpenDecoder: probe the decoder and return score
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*****************************************************************************
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@ -99,33 +101,23 @@ static int OpenDecoder( vlc_object_t *p_this )
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decoder_sys_t *p_sys;
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vlc_value_t val;
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switch( p_dec->fmt_in.i_codec )
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if( p_dec->fmt_in.i_codec != VLC_FOURCC('c','v','i','d') &&
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p_dec->fmt_in.i_codec != VLC_FOURCC('C','V','I','D') )
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{
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case VLC_FOURCC('c','v','i','d'):
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case VLC_FOURCC('C','V','I','D'):
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break;
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default:
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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 =
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(decoder_sys_t *)malloc(sizeof(decoder_sys_t)) ) == NULL )
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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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if( !(p_sys->p_context = malloc( sizeof( cinepak_context_t ) ) ) )
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{
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msg_Err( p_dec, "out of memory" );
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}
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memset( p_sys->p_context, 0, sizeof( cinepak_context_t ) );
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memset( &p_sys->context, 0, sizeof( cinepak_context_t ) );
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var_Create( p_dec, "grayscale", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
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var_Get( p_dec, "grayscale", &val );
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p_sys->p_context->b_grayscale = val.b_bool;
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p_sys->context.b_grayscale = val.b_bool;
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p_dec->pf_decode_video = DecodeBlock;
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@ -147,11 +139,14 @@ static picture_t *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
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picture_t *p_pic;
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block_t *p_block;
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if( !pp_block || !*pp_block ) return NULL;
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if( !pp_block || !*pp_block )
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{
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return NULL;
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}
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p_block = *pp_block;
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*pp_block = NULL;
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i_status = cinepak_decode_frame( p_sys->p_context, p_block->i_buffer,
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i_status = cinepak_decode_frame( &p_sys->context, p_block->i_buffer,
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p_block->p_buffer );
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if( i_status < 0 )
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{
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@ -161,43 +156,38 @@ static picture_t *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
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return NULL;
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}
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p_dec->fmt_out.video.i_width = p_sys->p_context->i_width;
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p_dec->fmt_out.video.i_height = p_sys->p_context->i_height;
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p_dec->fmt_out.video.i_aspect = p_sys->p_context->i_width
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* VOUT_ASPECT_FACTOR / p_sys->p_context->i_height;
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p_dec->fmt_out.video.i_width = p_sys->context.i_width;
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p_dec->fmt_out.video.i_height = p_sys->context.i_height;
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p_dec->fmt_out.video.i_aspect = p_sys->context.i_width
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* VOUT_ASPECT_FACTOR / p_sys->context.i_height;
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p_dec->fmt_out.i_codec = VLC_FOURCC('I','4','2','0');
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/* Get a new picture */
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p_pic = p_dec->pf_vout_buffer_new( p_dec );
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if( p_pic == NULL )
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if( ( p_pic = p_dec->pf_vout_buffer_new( p_dec ) ) )
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{
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block_Release( p_block );
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return NULL;
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}
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for( i_plane = 0; i_plane < 3; i_plane++ )
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{
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int i_line, i_lines;
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p_dst = p_pic->p[i_plane].p_pixels;
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p_src = p_sys->p_context->p_pix[i_plane];
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p_src = p_sys->context.p_pix[i_plane];
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i_lines = __MIN( p_sys->p_context->i_lines[i_plane],
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i_lines = __MIN( p_sys->context.i_lines[i_plane],
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p_pic->p[i_plane].i_lines );
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for( i_line = 0; i_line < i_lines; i_line++ )
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{
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memcpy( p_dst, p_src,
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__MIN( p_pic->p[i_plane].i_pitch,
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p_sys->p_context->i_stride[i_plane] ) );
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p_sys->context.i_stride[i_plane] ) );
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p_dst += p_pic->p[i_plane].i_pitch;
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p_src += p_sys->p_context->i_stride[i_plane];
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p_src += p_sys->context.i_stride[i_plane];
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}
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}
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p_pic->date = p_block->i_pts;
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block_Release( p_block );
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}
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block_Release( p_block );
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return p_pic;
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}
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@ -214,11 +204,9 @@ static void CloseDecoder( vlc_object_t *p_this )
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for( i = 0; i < 3; i++ )
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{
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if( p_sys->p_context->p_pix[i] ) free( p_sys->p_context->p_pix[i] );
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if( p_sys->context.p_pix[i] ) free( p_sys->context.p_pix[i] );
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}
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free( p_sys->p_context );
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free( p_sys );
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}
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