--- /dev/null
+/*****************************************************************************
+ * cinepak.c: cinepak video decoder
+ *****************************************************************************
+ * Copyright (C) 1999-2001 VideoLAN
+ * $Id: cinepak.c,v 1.1 2002/07/21 15:11:55 fenrir Exp $
+ *
+ * Authors: Laurent Aimar <fenrir@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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
+ *****************************************************************************/
+
+/*****************************************************************************
+ * Preamble
+ *****************************************************************************/
+#include <stdlib.h> /* malloc(), free() */
+
+#include <vlc/vlc.h>
+#include <vlc/vout.h>
+#include <vlc/decoder.h>
+#include <vlc/input.h>
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h> /* getpid() */
+#endif
+
+#include <errno.h>
+#include <string.h>
+
+#ifdef HAVE_SYS_TIMES_H
+# include <sys/times.h>
+#endif
+
+#include "vdec_ext-plugins.h"
+#include "cinepak.h"
+
+/*
+ * Local prototypes
+ */
+static int decoder_Probe ( u8 * );
+static int decoder_Run ( decoder_fifo_t * );
+static int InitThread ( videodec_thread_t * );
+static void EndThread ( videodec_thread_t * );
+static void DecodeThread ( videodec_thread_t * );
+
+
+/*****************************************************************************
+ * Capabilities
+ *****************************************************************************/
+void _M( vdec_getfunctions )( function_list_t * p_function_list )
+{
+ p_function_list->functions.dec.pf_probe = decoder_Probe;
+ p_function_list->functions.dec.pf_run = decoder_Run;
+}
+
+/*****************************************************************************
+ * Build configuration tree.
+ *****************************************************************************/
+
+MODULE_CONFIG_START
+MODULE_CONFIG_STOP
+
+MODULE_INIT_START
+ SET_DESCRIPTION( "Cinepak Video Decoder" )
+ ADD_CAPABILITY( DECODER, 70 )
+MODULE_INIT_STOP
+
+MODULE_ACTIVATE_START
+ _M( vdec_getfunctions )( &p_module->p_functions->dec );
+MODULE_ACTIVATE_STOP
+
+MODULE_DEACTIVATE_START
+MODULE_DEACTIVATE_STOP
+
+
+/*****************************************************************************
+ * decoder_Probe: probe the decoder and return score
+ *****************************************************************************
+ * Tries to launch a decoder and return score so that the interface is able
+ * to chose.
+ *****************************************************************************/
+static int decoder_Probe( u8 *pi_type )
+{
+ return( ( *pi_type == CINEPAK_VIDEO_ES ) ? 0 : -1 );
+}
+
+/*****************************************************************************
+ * decoder_Run: this function is called just after the thread is created
+ *****************************************************************************/
+static int decoder_Run ( decoder_fifo_t * p_fifo )
+{
+ videodec_thread_t *p_vdec;
+ int b_error;
+
+ if ( !(p_vdec = (videodec_thread_t*)malloc( sizeof(videodec_thread_t))) )
+ {
+ msg_Err( p_fifo, "out of memory" );
+ DecoderError( p_fifo );
+ return( -1 );
+ }
+ memset( p_vdec, 0, sizeof( videodec_thread_t ) );
+
+ p_vdec->p_fifo = p_fifo;
+
+ if( InitThread( p_vdec ) != 0 )
+ {
+ DecoderError( p_fifo );
+ return( -1 );
+ }
+
+ while( (!p_vdec->p_fifo->b_die) && (!p_vdec->p_fifo->b_error) )
+ {
+ DecodeThread( p_vdec );
+ }
+
+ if( ( b_error = p_vdec->p_fifo->b_error ) )
+ {
+ DecoderError( p_vdec->p_fifo );
+ }
+
+ EndThread( p_vdec );
+
+ if( b_error )
+ {
+ return( -1 );
+ }
+
+ return( 0 );
+}
+
+
+/*****************************************************************************
+ * locales Functions
+ *****************************************************************************/
+
+static inline u16 GetWBE( u8 *p_buff )
+{
+ return( (p_buff[0]<<8) + p_buff[1] );
+}
+
+static inline u32 GetDWBE( u8 *p_buff )
+{
+ return( (p_buff[0] << 24) + ( p_buff[1] <<16 ) +
+ ( p_buff[2] <<8 ) + p_buff[3] );
+}
+
+#define GET2BYTES( p ) \
+ GetWBE( p ); p+= 2;
+/* FIXME */
+#define GET3BYTES( p ) \
+ (GetDWBE( p ) >> 8); p+= 3;
+
+#define GET4BYTES( p ) \
+ GetDWBE( p ); p+= 4;
+
+#define FREE( p ) \
+ if( p ) free( p )
+
+/* get the first pes from fifo */
+static pes_packet_t *__PES_GET( decoder_fifo_t *p_fifo )
+{
+ pes_packet_t *p_pes;
+
+ vlc_mutex_lock( &p_fifo->data_lock );
+
+ /* if fifo is emty wait */
+ while( !p_fifo->p_first )
+ {
+ if( p_fifo->b_die )
+ {
+ vlc_mutex_unlock( &p_fifo->data_lock );
+ return( NULL );
+ }
+ vlc_cond_wait( &p_fifo->data_wait, &p_fifo->data_lock );
+ }
+ p_pes = p_fifo->p_first;
+
+ vlc_mutex_unlock( &p_fifo->data_lock );
+
+ return( p_pes );
+}
+
+/* free the first pes and go to next */
+static void __PES_NEXT( decoder_fifo_t *p_fifo )
+{
+ pes_packet_t *p_next;
+
+ vlc_mutex_lock( &p_fifo->data_lock );
+
+ p_next = p_fifo->p_first->p_next;
+ p_fifo->p_first->p_next = NULL;
+ input_DeletePES( p_fifo->p_packets_mgt, p_fifo->p_first );
+ p_fifo->p_first = p_next;
+ p_fifo->i_depth--;
+
+ if( !p_fifo->p_first )
+ {
+ /* No PES in the fifo */
+ /* pp_last no longer valid */
+ p_fifo->pp_last = &p_fifo->p_first;
+ while( !p_fifo->p_first )
+ {
+ vlc_cond_signal( &p_fifo->data_wait );
+ vlc_cond_wait( &p_fifo->data_wait, &p_fifo->data_lock );
+ }
+ }
+ vlc_mutex_unlock( &p_fifo->data_lock );
+}
+
+static inline void __GetFrame( videodec_thread_t *p_vdec )
+{
+ pes_packet_t *p_pes;
+ data_packet_t *p_data;
+ byte_t *p_buffer;
+
+ p_pes = __PES_GET( p_vdec->p_fifo );
+ p_vdec->i_pts = p_pes->i_pts;
+
+ while( ( !p_pes->i_nb_data )||( !p_pes->i_pes_size ) )
+ {
+ __PES_NEXT( p_vdec->p_fifo );
+ p_pes = __PES_GET( p_vdec->p_fifo );
+ }
+ p_vdec->i_framesize = p_pes->i_pes_size;
+ if( p_pes->i_nb_data == 1 )
+ {
+ p_vdec->p_framedata = p_pes->p_first->p_payload_start;
+ return;
+ }
+ /* get a buffer and gather all data packet */
+ p_vdec->p_framedata = p_buffer = malloc( p_pes->i_pes_size );
+ p_data = p_pes->p_first;
+ do
+ {
+ p_vdec->p_fifo->p_vlc->pf_memcpy( p_buffer, p_data->p_payload_start,
+ p_data->p_payload_end - p_data->p_payload_start );
+ p_buffer += p_data->p_payload_end - p_data->p_payload_start;
+ p_data = p_data->p_next;
+ } while( p_data );
+}
+
+static inline void __NextFrame( videodec_thread_t *p_vdec )
+{
+ pes_packet_t *p_pes;
+
+ p_pes = __PES_GET( p_vdec->p_fifo );
+ if( p_pes->i_nb_data != 1 )
+ {
+ free( p_vdec->p_framedata ); /* FIXME keep this buffer */
+ }
+ __PES_NEXT( p_vdec->p_fifo );
+}
+
+static int cinepak_CheckVout( vout_thread_t *p_vout,
+ int i_width,
+ int i_height )
+{
+ if( !p_vout )
+ {
+ return( 0 );
+ }
+
+ if( ( p_vout->render.i_width != i_width )||
+ ( p_vout->render.i_height != i_height )||
+ ( p_vout->render.i_chroma != FOURCC_I420 )||
+ ( p_vout->render.i_aspect != VOUT_ASPECT_FACTOR * i_width / i_height) )
+ {
+ return( 0 );
+ }
+ else
+ {
+ return( 1 );
+ }
+}
+
+/* Return a Vout */
+
+static vout_thread_t *cinepak_CreateVout( videodec_thread_t *p_vdec,
+ int i_width,
+ int i_height )
+{
+ vout_thread_t *p_vout;
+
+ if( (!i_width)||(!i_height) )
+ {
+ return( NULL ); /* Can't create a new vout without display size */
+ }
+
+ /* Spawn a video output if there is none. First we look for our children,
+ * then we look for any other vout that might be available. */
+ p_vout = vlc_object_find( p_vdec->p_fifo, VLC_OBJECT_VOUT,
+ FIND_CHILD );
+ if( !p_vout )
+ {
+ p_vout = vlc_object_find( p_vdec->p_fifo, VLC_OBJECT_VOUT,
+ FIND_ANYWHERE );
+ }
+
+ if( p_vout )
+ {
+ if( !cinepak_CheckVout( p_vout, i_width, i_height ) )
+ {
+ /* We are not interested in this format, close this vout */
+ vlc_object_detach_all( p_vout );
+ vlc_object_release( p_vout );
+ vout_DestroyThread( p_vout );
+ p_vout = NULL;
+ }
+ else
+ {
+ /* This video output is cool! Hijack it. */
+ vlc_object_detach_all( p_vout );
+ vlc_object_attach( p_vout, p_vdec->p_fifo );
+ vlc_object_release( p_vout );
+ }
+ }
+
+ if( p_vout == NULL )
+ {
+ msg_Dbg( p_vdec->p_fifo, "no vout present, spawning one" );
+
+ p_vout = vout_CreateThread( p_vdec->p_fifo,
+ i_width,
+ i_height,
+ FOURCC_I420,
+ VOUT_ASPECT_FACTOR * i_width / i_height );
+ }
+
+ return( p_vout );
+}
+
+void cinepak_LoadCodebook( cinepak_codebook_t *p_codebook,
+ u8 *p_data,
+ int b_12bits )
+{
+ int i, i_y[4], i_u, i_v, i_Cb, i_Cr;
+ int i_uv;
+#define SCALEBITS 12
+#define FIX( x ) ( (int)( (x) * ( 1L << SCALEBITS ) + 0.5 ) )
+
+ for( i = 0; i < 4; i++ )
+ {
+ i_y[i] = (u8)( *(p_data++) );
+ }
+ if( b_12bits )
+ {
+ i_u = (s8)( *(p_data++) );
+ i_v = (s8)( *(p_data++) );
+ }
+ else
+ {
+ i_u = 0;
+ i_v = 0;
+ }
+
+ /*
+ | Y | | 1 -0.0655 0.0110 | | CY |
+ | Cb | = | 0 1.1656 -0.0062 | | CU |
+ | Cr | | 0 0.0467 1.4187 | | CV |
+ */
+ i_uv = ( FIX( -0.0655 ) * i_u + FIX( 0.0110 ) * i_v ) >> SCALEBITS;
+ for( i = 0; i < 4; i++ )
+ {
+ i_y[i] += i_uv;
+ }
+ i_Cb = ( FIX( 1.1656 ) * i_u + FIX( -0.0062 ) * i_v ) >> SCALEBITS;
+ i_Cr = ( FIX( 0.0467 ) * i_u + FIX( 1.4187 ) * i_v ) >> SCALEBITS;
+
+ for( i = 0; i < 4; i++ )
+ {
+ p_codebook->i_y[i] = __MIN( __MAX( 0, i_y[i] ), 255 );
+ }
+ p_codebook->i_u = __MIN( __MAX( 0, i_Cb + 128 ), 255 );
+ p_codebook->i_v = __MIN( __MAX( 0, i_Cr + 128 ), 255 );
+
+#undef FIX
+#undef SCALEBITS
+}
+
+void cinepak_Getv4( cinepak_context_t *p_context,
+ int i_strip,
+ int i_x, int i_y,
+ int i_x2, int i_y2,
+ u8 *p_data )
+{
+ u8 i_index[4];
+ int i,j;
+
+ u8 *p_dst_y, *p_dst_u, *p_dst_v;
+#define PIX_SET_Y( x, y, v ) \
+ p_dst_y[(x) + (y)* p_context->i_stride[0]] = (v);
+
+#define PIX_SET_UV( i, p, x, y, v ) \
+ p[(x) + (y)* (p_context->i_stride[i])] = (v);
+
+ for( i = 0; i < 4; i++ )
+ {
+ i_index[i] = *(p_data++);
+ }
+
+ /* y plane */
+ p_dst_y = p_context->p_pix[0] + p_context->i_stride[0] * i_y + i_x;
+ p_dst_u = p_context->p_pix[1] + p_context->i_stride[1] * (i_y/2) + (i_x/2);
+ p_dst_v = p_context->p_pix[2] + p_context->i_stride[2] * (i_y/2) + (i_x/2);
+
+ for( i = 0; i < 2; i++ )
+ {
+ for( j = 0; j < 2; j ++ )
+ {
+ PIX_SET_Y( 2*j + 0, 2*i + 0,
+ p_context->codebook_v4[i_strip][i_index[j+2*i]].i_y[0]);
+ PIX_SET_Y( 2*j + 1, 2*i + 0,
+ p_context->codebook_v4[i_strip][i_index[j+2*i]].i_y[1]);
+ PIX_SET_Y( 2*j + 0, 2*i + 1,
+ p_context->codebook_v4[i_strip][i_index[j+2*i]].i_y[2]);
+ PIX_SET_Y( 2*j + 1, 2*i + 1,
+ p_context->codebook_v4[i_strip][i_index[j+2*i]].i_y[3]);
+
+ PIX_SET_UV( 1, p_dst_u, j, i,
+ p_context->codebook_v4[i_strip][i_index[j+2*i]].i_u );
+ PIX_SET_UV( 2, p_dst_v, j, i,
+ p_context->codebook_v4[i_strip][i_index[j+2*i]].i_v );
+ }
+ }
+#undef PIX_SET_Y
+#undef PIX_SET_UV
+}
+
+void cinepak_Getv1( cinepak_context_t *p_context,
+ int i_strip,
+ int i_x, int i_y,
+ int i_x2, int i_y2,
+ u8 *p_data )
+{
+ u8 i_index;
+ int i,j;
+
+ u8 *p_dst_y, *p_dst_u, *p_dst_v;
+#define PIX_SET_Y( x, y, v ) \
+ p_dst_y[(x) + (y)* p_context->i_stride[0]] = (v);
+
+#define PIX_SET_UV( i,p, x, y, v ) \
+ p[(x) + (y)* (p_context->i_stride[i])] = (v);
+
+ i_index = *(p_data++);
+
+ /* y plane */
+ p_dst_y = p_context->p_pix[0] + p_context->i_stride[0] * i_y + i_x;
+ p_dst_u = p_context->p_pix[1] + p_context->i_stride[1] * (i_y/2) + (i_x/2);
+ p_dst_v = p_context->p_pix[2] + p_context->i_stride[2] * (i_y/2) + (i_x/2);
+
+ for( i = 0; i < 2; i++ )
+ {
+ for( j = 0; j < 2; j ++ )
+ {
+ PIX_SET_Y( 2*j + 0, 2*i + 0,
+ p_context->codebook_v1[i_strip][i_index].i_y[0] );
+ PIX_SET_Y( 2*j + 1, 2*i + 0,
+ p_context->codebook_v1[i_strip][i_index].i_y[1] );
+ PIX_SET_Y( 2*j + 0, 2*i + 1,
+ p_context->codebook_v1[i_strip][i_index].i_y[2] );
+ PIX_SET_Y( 2*j + 1, 2*i + 1,
+ p_context->codebook_v1[i_strip][i_index].i_y[3] );
+
+ PIX_SET_UV( 1,p_dst_u, j, i,
+ p_context->codebook_v1[i_strip][i_index].i_u );
+ PIX_SET_UV( 2,p_dst_v, j, i,
+ p_context->codebook_v1[i_strip][i_index].i_v );
+ }
+ }
+
+#undef PIX_SET_Y
+#undef PIX_SET_UV
+}
+
+/*****************************************************************************
+ * The function that decode one frame
+ *****************************************************************************/
+int cinepak_decode_frame( cinepak_context_t *p_context,
+ int i_length, u8 *p_data )
+{
+ int i_strip;
+
+ int i_frame_flags;
+ int i_frame_size;
+ int i_width, i_height;
+ int i_frame_strips;
+ int i_index;
+ int i_strip_x1 =0, i_strip_y1=0;
+ int i_strip_x2 =0, i_strip_y2=0;
+
+ if( i_length <= 10 )
+ {
+ /* Broken header or no data */
+ return( -1 );
+ }
+
+ /* get header */
+ i_frame_flags = *(p_data++);
+ i_frame_size = GET3BYTES( p_data );
+ i_width = GET2BYTES( p_data );
+ i_height = GET2BYTES( p_data );
+ i_frame_strips = GET2BYTES( p_data );
+
+ /* Check if we have a picture buffer with good size */
+ if( ( p_context->i_width != i_width )||
+ ( p_context->i_height != i_height ) )
+ {
+ int i;
+ for( i = 0; i < 3; i++ )
+ {
+ FREE( p_context->p_pix[i] );
+ }
+
+ p_context->i_width = i_width;
+ p_context->i_height = i_height;
+
+ p_context->i_stride[0] = ( i_width + 3)&0xfffc;
+ p_context->i_stride[1] = p_context->i_stride[2] =
+ p_context->i_stride[0] / 2;
+
+ p_context->i_lines[0] = ( i_height + 3 )&0xfffc;
+ p_context->i_lines[1] = p_context->i_lines[2] =
+ p_context->i_lines[0] /2;
+
+ for( i = 0; i < 3; i++ )
+ {
+ p_context->p_pix[i] = malloc( p_context->i_stride[i] *
+ p_context->i_lines[i] );
+ }
+ }
+
+ if( i_frame_size != i_length )
+ {
+ i_length = __MIN( i_length, i_frame_size );
+ }
+ i_length -= 10;
+
+ if( i_frame_strips >= CINEPAK_MAXSTRIP )
+ {
+ i_frame_strips = CINEPAK_MAXSTRIP;
+ }
+
+ /* Now decode each strip */
+
+ for( i_strip = 0; i_strip < i_frame_strips; i_strip++ )
+ {
+ int i_strip_id;
+ int i_strip_size;
+
+ if( i_length <= 12 )
+ {
+ break;
+ }
+
+
+ i_strip_id = GET2BYTES( p_data );
+ i_strip_size = GET2BYTES( p_data );
+ i_strip_size = __MIN( i_strip_size, i_length );
+ /* FIXME I don't really understand how it's work; */
+ i_strip_y1 = i_strip_y2 + GET2BYTES( p_data );
+ i_strip_x1 = GET2BYTES( p_data );
+ i_strip_y2 = i_strip_y2 + GET2BYTES( p_data );
+ i_strip_x2 = GET2BYTES( p_data );
+
+ i_length -= i_strip_size;
+
+ i_strip_size -= 12;
+ /* init codebook , if needed */
+ if( ( i_strip > 0 )&&( !(i_frame_flags&0x01) ) )
+ {
+ memcpy( &p_context->codebook_v1[i_strip],
+ &p_context->codebook_v1[i_strip-1],
+ sizeof(cinepak_codebook_t[256] ) );
+
+ memcpy( &p_context->codebook_v4[i_strip],
+ &p_context->codebook_v4[i_strip-1],
+ sizeof(cinepak_codebook_t[256] ) );
+ }
+
+ /* Now parse all chunk in this strip */
+ while( i_strip_size > 0 )
+ {
+ cinepak_codebook_t (*p_codebook)[CINEPAK_MAXSTRIP][256];
+ int i_mode;
+
+ int i_chunk_id;
+ int i_chunk_size;
+ u32 i_vector_flags;
+ int i_count;
+ int i;
+ int i_x, i_y; /* (0,0) begin in fact at (x1,y1) ... */
+
+ i_chunk_id = GET2BYTES( p_data );
+ i_chunk_size = GET2BYTES( p_data );
+ i_chunk_size = __MIN( i_chunk_size, i_strip_size );
+ i_strip_size -= i_chunk_size;
+
+ i_chunk_size -= 4;
+
+ i_x = 0;
+ i_y = 0;
+ if( i_chunk_size < 0 )
+ {
+ break;
+ }
+
+ switch( i_chunk_id )
+ {
+ case( 0x2000 ): /* 12bits v4 Intra*/
+ case( 0x2200 ): /* 12bits v1 Intra*/
+ case( 0x2400 ): /* 8bits v4 Intra*/
+ case( 0x2600 ): /* 8bits v1 Intra */
+ i_mode = ( ( i_chunk_id&0x0400 ) == 0 );
+ p_codebook = ( i_chunk_id&0x0200 ) ?
+ &p_context->codebook_v1 :
+ &p_context->codebook_v4;
+
+ i_count = __MIN( i_chunk_size / ( i_mode ? 6 : 4 ), 256 );
+
+ for( i = 0; i < i_count; i++ )
+ {
+ cinepak_LoadCodebook( &((*p_codebook)[i_strip][i]),
+ p_data, i_mode );
+ p_data += i_mode ? 6 : 4;
+ i_chunk_size -= i_mode ? 6 : 4;
+ }
+ break;
+
+ case( 0x2100 ): /* selective 12bits v4 Inter*/
+ case( 0x2300 ): /* selective 12bits v1 Inter*/
+ case( 0x2500 ): /* selective 8bits v4 Inter*/
+ case( 0x2700 ): /* selective 8bits v1 Inter*/
+ i_mode = ( ( i_chunk_id&0x0400 ) == 0 );
+ p_codebook = ( i_chunk_id&0x0200 ) ?
+ &p_context->codebook_v1 :
+ &p_context->codebook_v4;
+
+ i_index = 0;
+ while( (i_chunk_size > 4)&&(i_index<256))
+ {
+ i_vector_flags = GET4BYTES( p_data );
+ i_chunk_size -= 4;
+ for( i = 0; i < 32; i++ )
+ {
+ if( ( i_chunk_size < ( i_mode ? 6 : 4 ) )||(i_index >= 256 ))
+ {
+ break;
+ }
+ if( i_vector_flags&0x80000000UL )
+ {
+ cinepak_LoadCodebook( &((*p_codebook)[i_strip][i_index]),
+ p_data, i_mode );
+ p_data += i_mode ? 6 : 4;
+ i_chunk_size -= i_mode ? 6 : 4;
+ }
+ i_index++;
+ i_vector_flags <<= 1;
+ }
+ }
+ break;
+
+ case( 0x3000 ): /* load image Intra */
+ while( (i_chunk_size >= 4 )&&(i_y<i_strip_y2-i_strip_y1) )
+ {
+ i_vector_flags = GET4BYTES( p_data );
+ i_chunk_size -= 4;
+ i_strip_size -= 4;
+ i_length -= 4;
+
+ for( i = 0; i < 32; i++ )
+ {
+ if( ( i_y >= i_strip_y2 - i_strip_y1)||
+ ( i_chunk_size<=0) )
+ {
+ break;
+ }
+ if( i_vector_flags&0x80000000UL )
+ {
+ cinepak_Getv4( p_context,
+ i_strip,
+ i_strip_x1 + i_x,
+ i_strip_y1 + i_y,
+ i_strip_x2, i_strip_y2,
+ p_data );
+ p_data += 4;
+ i_chunk_size -= 4;
+ }
+ else
+ {
+ cinepak_Getv1( p_context,
+ i_strip,
+ i_strip_x1 + i_x,
+ i_strip_y1 + i_y,
+ i_strip_x2, i_strip_y2,
+ p_data );
+ p_data++;
+ i_chunk_size--;
+ }
+
+ i_x += 4;
+ if( i_x >= i_strip_x2 - i_strip_x1 )
+ {
+ i_x = 0;
+ i_y += 4;
+ }
+ i_vector_flags <<= 1;
+ }
+ }
+ break;
+
+ case( 0x3100 ): /* load image Inter */
+ while( ( i_chunk_size > 4 )&&( i_y < i_strip_y2 - i_strip_y1) )
+ {
+ u32 i_mask;
+ i_vector_flags = GET4BYTES( p_data );
+ i_chunk_size -= 4;
+ i_mask = 0x80000000UL;
+
+ while((i_chunk_size > 0 )&&( i_mask )&&( i_y < i_strip_y2 - i_strip_y1 ))
+ {
+ if( i_vector_flags&i_mask)
+ {
+ i_mask >>= 1;
+ if( !i_mask )
+ {
+ if( i_chunk_size < 4 )
+ {
+ break;
+ }
+ i_vector_flags = GET4BYTES( p_data );
+ i_chunk_size -= 4;
+ i_mask = 0x80000000UL;
+ }
+ if( i_vector_flags&i_mask )
+ {
+ if( i_chunk_size < 4 ) break;
+ cinepak_Getv4( p_context,
+ i_strip,
+ i_strip_x1 + i_x,
+ i_strip_y1 + i_y,
+ i_strip_x2, i_strip_y2,
+ p_data );
+ p_data += 4;
+ i_chunk_size -= 4;
+ }
+ else
+ {
+ if( i_chunk_size < 1 ) break;
+ cinepak_Getv1( p_context,
+ i_strip,
+ i_strip_x1 + i_x,
+ i_strip_y1 + i_y,
+ i_strip_x2, i_strip_y2,
+ p_data );
+ p_data++;
+ i_chunk_size--;
+ }
+ }
+ i_mask >>= 1;
+
+ i_x += 4;
+ if( i_x >= i_strip_x2 - i_strip_x1 )
+ {
+ i_x = 0;
+ i_y += 4;
+ }
+ }
+ }
+ break;
+
+ case( 0x3200 ): /* load intra picture but all v1*/
+ while( ( i_chunk_size > 0 )&&
+ ( i_y < i_strip_y2 - i_strip_y1) )
+ {
+ cinepak_Getv1( p_context,
+ i_strip,
+ i_strip_x1 + i_x,
+ i_strip_y1 + i_y,
+ i_strip_x2, i_strip_y2,
+ p_data );
+ p_data++;
+ i_chunk_size--;
+
+ i_x += 4;
+ if( i_x >= i_strip_x2 - i_strip_x1 )
+ {
+ i_x = 0;
+ i_y += 4;
+ }
+
+ }
+ break;
+
+
+
+ default:
+ break;
+
+ }
+ p_data += i_chunk_size ; /* skip remains bytes */
+
+ }
+ }
+
+
+ return( 0 );
+}
+
+
+/*****************************************************************************
+ *
+ * Functions that initialize, decode and end the decoding process
+ *
+ *****************************************************************************/
+
+/*****************************************************************************
+ * InitThread: initialize vdec output thread
+ *****************************************************************************
+ * This function is called from decoder_Run and performs the second step
+ * of the initialization. It returns 0 on success. Note that the thread's
+ * flag are not modified inside this function.
+ *****************************************************************************/
+
+static int InitThread( videodec_thread_t *p_vdec )
+{
+
+ /* This will be created after the first decoded frame */
+ if( !(p_vdec->p_context = malloc( sizeof( cinepak_context_t ) ) ) )
+ {
+ msg_Err( p_vdec->p_fifo, "out of memory" );
+ }
+ memset( p_vdec->p_context, 0, sizeof( cinepak_context_t ) );
+
+ p_vdec->p_vout = NULL;
+ msg_Dbg( p_vdec->p_fifo, "cinepak decoder started" );
+ return( 0 );
+}
+
+
+/*****************************************************************************
+ * DecodeThread: Called for decode one frame
+ *****************************************************************************/
+static void DecodeThread( videodec_thread_t *p_vdec )
+{
+ int i_status;
+
+ int i_plane;
+ u8 *p_dst, *p_src;
+ picture_t *p_pic; /* videolan picture */
+
+ __GetFrame( p_vdec );
+
+ i_status = cinepak_decode_frame( p_vdec->p_context,
+ p_vdec->i_framesize,
+ p_vdec->p_framedata );
+ __NextFrame( p_vdec );
+
+ if( i_status < 0 )
+ {
+ msg_Warn( p_vdec->p_fifo, "cannot decode one frame (%d bytes)",
+ p_vdec->i_framesize );
+ return;
+ }
+
+ /* Check our vout */
+ if( !cinepak_CheckVout( p_vdec->p_vout,
+ p_vdec->p_context->i_width,
+ p_vdec->p_context->i_height ) )
+ {
+ p_vdec->p_vout =
+ cinepak_CreateVout( p_vdec,
+ p_vdec->p_context->i_width,
+ p_vdec->p_context->i_height );
+
+ if( !p_vdec->p_vout )
+ {
+ msg_Err( p_vdec->p_fifo, "cannot create vout" );
+ p_vdec->p_fifo->b_error = 1; /* abort */
+ return;
+ }
+ }
+
+ /* Send decoded frame to vout */
+ while( !(p_pic = vout_CreatePicture( p_vdec->p_vout, 0, 0, 0 ) ) )
+ {
+ if( p_vdec->p_fifo->b_die || p_vdec->p_fifo->b_error )
+ {
+ return;
+ }
+ msleep( VOUT_OUTMEM_SLEEP );
+ }
+
+ for( i_plane = 0; i_plane < 3; i_plane++ )
+ {
+ int i_line, i_lines;
+
+ p_dst = p_pic->p[i_plane].p_pixels;
+ p_src = p_vdec->p_context->p_pix[i_plane];
+
+ i_lines = __MIN( p_vdec->p_context->i_lines[i_plane],
+ p_pic->p[i_plane].i_lines );
+ for( i_line = 0; i_line < i_lines; i_line++ )
+ {
+ memcpy( p_dst,
+ p_src,
+ __MIN( p_pic->p[i_plane].i_pitch,
+ p_vdec->p_context->i_stride[i_plane] ) );
+ p_dst += p_pic->p[i_plane].i_pitch;
+ p_src += p_vdec->p_context->i_stride[i_plane];
+ }
+ }
+
+ vout_DatePicture( p_vdec->p_vout, p_pic, p_vdec->i_pts);
+ vout_DisplayPicture( p_vdec->p_vout, p_pic );
+
+ return;
+}
+
+
+/*****************************************************************************
+ * EndThread: thread destruction
+ *****************************************************************************
+ * This function is called when the thread ends after a sucessful
+ * initialization.
+ *****************************************************************************/
+static void EndThread( videodec_thread_t *p_vdec )
+{
+ int i;
+
+ if( !p_vdec )
+ {
+ return;
+ }
+ msg_Dbg( p_vdec->p_fifo, "cinepak decoder stopped" );
+
+ for( i = 0; i < 3; i++ )
+ {
+ FREE( p_vdec->p_context->p_pix[i] );
+ }
+
+ free( p_vdec->p_context );
+
+ if( p_vdec->p_vout != NULL )
+ {
+ /* We are about to die. Reattach video output to p_vlc. */
+ vlc_object_detach( p_vdec->p_vout, p_vdec->p_fifo );
+ vlc_object_attach( p_vdec->p_vout, p_vdec->p_fifo->p_vlc );
+ }
+
+ free( p_vdec );
+}
+
+
projects / vlc / commitdiff