Diffstat (limited to 'core/multimedia/opieplayer/libmpeg3/video/slice.h') (more/less context) (ignore whitespace changes)
| -rw-r--r-- | core/multimedia/opieplayer/libmpeg3/video/slice.h | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/core/multimedia/opieplayer/libmpeg3/video/slice.h b/core/multimedia/opieplayer/libmpeg3/video/slice.h new file mode 100644 index 0000000..e36ffef --- a/dev/null +++ b/core/multimedia/opieplayer/libmpeg3/video/slice.h @@ -0,0 +1,194 @@ +/********************************************************************** +** Copyright (C) 2000 Trolltech AS. All rights reserved. +** +** This file is part of Qtopia Environment. +** +** This file may be distributed and/or modified under the terms of the +** GNU General Public License version 2 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. +** +** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE +** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +** +** See http://www.trolltech.com/gpl/ for GPL licensing information. +** +** Contact info@trolltech.com if any conditions of this licensing are +** not clear to you. +** +**********************************************************************/ +#ifndef SLICE_H +#define SLICE_H + +#ifndef _WIN32 +#include <pthread.h> +#endif + +/* Array of these feeds the slice decoders */ +typedef struct +{ + unsigned char *data; /* Buffer for holding the slice data */ + int buffer_size; /* Size of buffer */ + int buffer_allocation; /* Space allocated for buffer */ + int current_position; /* Position in buffer */ + unsigned MPEG3_INT32 bits; + int bits_size; + pthread_mutex_t completion_lock; /* Lock slice until completion */ + int done; /* Signal for slice decoder to skip */ +} mpeg3_slice_buffer_t; + +/* Each slice decoder */ +typedef struct +{ + struct mpeg3video_rec *video; + mpeg3_slice_buffer_t *slice_buffer; + + int thread_number; /* Number of this thread */ + int current_buffer; /* Buffer this slice decoder is on */ + int buffer_step; /* Number of buffers to skip */ + int last_buffer; /* Last buffer this decoder should process */ + int fault; + int done; + int quant_scale; + int pri_brk; /* slice/macroblock */ + short block[12][64]; + int sparse[12]; + pthread_t tid; /* ID of thread */ + pthread_mutex_t input_lock, output_lock; +} mpeg3_slice_t; + +#define mpeg3slice_fillbits(buffer, nbits) \ + while(((mpeg3_slice_buffer_t*)(buffer))->bits_size < (nbits)) \ + { \ + if(((mpeg3_slice_buffer_t*)(buffer))->current_position < ((mpeg3_slice_buffer_t*)(buffer))->buffer_size) \ + { \ + ((mpeg3_slice_buffer_t*)(buffer))->bits <<= 8; \ + ((mpeg3_slice_buffer_t*)(buffer))->bits |= ((mpeg3_slice_buffer_t*)(buffer))->data[((mpeg3_slice_buffer_t*)(buffer))->current_position++]; \ + } \ + ((mpeg3_slice_buffer_t*)(buffer))->bits_size += 8; \ + } + +#define mpeg3slice_flushbits(buffer, nbits) \ + { \ + mpeg3slice_fillbits((buffer), (nbits)); \ + ((mpeg3_slice_buffer_t*)(buffer))->bits_size -= (nbits); \ + } + +#define mpeg3slice_flushbit(buffer) \ +{ \ + if(((mpeg3_slice_buffer_t*)(buffer))->bits_size) \ + ((mpeg3_slice_buffer_t*)(buffer))->bits_size--; \ + else \ + if(((mpeg3_slice_buffer_t*)(buffer))->current_position < ((mpeg3_slice_buffer_t*)(buffer))->buffer_size) \ + { \ + ((mpeg3_slice_buffer_t*)(buffer))->bits = \ + ((mpeg3_slice_buffer_t*)(buffer))->data[((mpeg3_slice_buffer_t*)(buffer))->current_position++]; \ + ((mpeg3_slice_buffer_t*)(buffer))->bits_size = 7; \ + } \ +} + +extern inline unsigned int mpeg3slice_getbit(mpeg3_slice_buffer_t *buffer) +{ + if(buffer->bits_size) + return (buffer->bits >> (--buffer->bits_size)) & 0x1; + else + if(buffer->current_position < buffer->buffer_size) + { + buffer->bits = buffer->data[buffer->current_position++]; + buffer->bits_size = 7; + return (buffer->bits >> 7) & 0x1; + } + return 0; // WWA - stop warn +} + +extern inline unsigned int mpeg3slice_getbits2(mpeg3_slice_buffer_t *buffer) +{ + if(buffer->bits_size >= 2) + return (buffer->bits >> (buffer->bits_size -= 2)) & 0x3; + else + if(buffer->current_position < buffer->buffer_size) + { + buffer->bits <<= 8; + buffer->bits |= buffer->data[buffer->current_position++]; + buffer->bits_size += 6; + return (buffer->bits >> buffer->bits_size) & 0x3; + } + return 0; // WWA - stop warn +} + +extern inline unsigned int mpeg3slice_getbyte(mpeg3_slice_buffer_t *buffer) +{ + if(buffer->bits_size >= 8) + return (buffer->bits >> (buffer->bits_size -= 8)) & 0xff; + else + if(buffer->current_position < buffer->buffer_size) + { + buffer->bits <<= 8; + buffer->bits |= buffer->data[buffer->current_position++]; + return (buffer->bits >> buffer->bits_size) & 0xff; + } + return 0; // WWA - stop warn +} + + +extern inline unsigned int mpeg3slice_getbits(mpeg3_slice_buffer_t *slice_buffer, int bits) +{ + if(bits == 1) return mpeg3slice_getbit(slice_buffer); + mpeg3slice_fillbits(slice_buffer, bits); + return (slice_buffer->bits >> (slice_buffer->bits_size -= bits)) & (0xffffffff >> (32 - bits)); +} + +extern inline unsigned int mpeg3slice_showbits16(mpeg3_slice_buffer_t *buffer) +{ + if(buffer->bits_size >= 16) + return (buffer->bits >> (buffer->bits_size - 16)) & 0xffff; + else + if(buffer->current_position < buffer->buffer_size) + { + buffer->bits <<= 16; + buffer->bits_size += 16; + buffer->bits |= (unsigned int)buffer->data[buffer->current_position++] << 8; + buffer->bits |= buffer->data[buffer->current_position++]; + return (buffer->bits >> (buffer->bits_size - 16)) & 0xffff; + } + return 0; // WWA - stop warn +} + +extern inline unsigned int mpeg3slice_showbits9(mpeg3_slice_buffer_t *buffer) +{ + if(buffer->bits_size >= 9) + return (buffer->bits >> (buffer->bits_size - 9)) & 0x1ff; + else + if(buffer->current_position < buffer->buffer_size) + { + buffer->bits <<= 16; + buffer->bits_size += 16; + buffer->bits |= (unsigned int)buffer->data[buffer->current_position++] << 8; + buffer->bits |= buffer->data[buffer->current_position++]; + return (buffer->bits >> (buffer->bits_size - 9)) & 0x1ff; + } + return 0; // WWA - stop warn +} + +extern inline unsigned int mpeg3slice_showbits5(mpeg3_slice_buffer_t *buffer) +{ + if(buffer->bits_size >= 5) + return (buffer->bits >> (buffer->bits_size - 5)) & 0x1f; + else + if(buffer->current_position < buffer->buffer_size) + { + buffer->bits <<= 8; + buffer->bits_size += 8; + buffer->bits |= buffer->data[buffer->current_position++]; + return (buffer->bits >> (buffer->bits_size - 5)) & 0x1f; + } + return 0; // WWA - stop warn +} + +extern inline unsigned int mpeg3slice_showbits(mpeg3_slice_buffer_t *slice_buffer, int bits) +{ + mpeg3slice_fillbits(slice_buffer, bits); + return (slice_buffer->bits >> (slice_buffer->bits_size - bits)) & (0xffffffff >> (32 - bits)); +} + +#endif |