1 /*****************************************************************************
2 * transrate.h: MPEG2 video transrating module
3 *****************************************************************************
4 * Copyright (C) 2003 the VideoLAN team
5 * Copyright (C) 2003 Antoine Missout
6 * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
7 * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
10 * Authors: Christophe Massiot <massiot@via.ecp.fr>
11 * Laurent Aimar <fenrir@via.ecp.fr>
13 * Michel Lespinasse <walken@zoy.org>
14 * Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
16 * This program is free software; you can redistribute it and/or modify
17 * it under the terms of the GNU General Public License as published by
18 * the Free Software Foundation; either version 2 of the License, or
19 * (at your option) any later version.
21 * This program is distributed in the hope that it will be useful,
22 * but WITHOUT ANY WARRANTY; without even the implied warranty of
23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 * GNU General Public License for more details.
26 * You should have received a copy of the GNU General Public License
27 * along with this program; if not, write to the Free Software
28 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
29 *****************************************************************************/
31 /*****************************************************************************
33 *****************************************************************************/
51 uint32_t i_bit_in_cache;
52 uint32_t i_bit_out_cache;
65 unsigned int horizontal_size_value;
66 unsigned int vertical_size_value;
67 uint8_t intra_quantizer_matrix [64];
68 uint8_t non_intra_quantizer_matrix [64];
72 unsigned int picture_coding_type;
75 unsigned int f_code[2][2];
76 /* unsigned int intra_dc_precision; */
77 unsigned int picture_structure;
78 unsigned int frame_pred_frame_dct;
79 unsigned int concealment_motion_vectors;
80 unsigned int q_scale_type;
81 unsigned int intra_vlc_format;
85 // quantizer_scale_code
86 unsigned int quantizer_scale;
87 unsigned int new_quantizer_scale;
88 unsigned int last_coded_scale;
89 int h_offset, v_offset;
94 int i_admissible_error, i_minimum_error;
97 ssize_t i_total_input, i_remaining_input;
99 ssize_t i_current_output, i_wanted_output;
103 struct sout_stream_id_t
106 vlc_bool_t b_transrate;
108 block_t *p_current_buffer;
110 mtime_t i_next_gop_duration;
111 size_t i_next_gop_size;
117 #ifdef HAVE_BUILTIN_EXPECT
118 #define likely(x) __builtin_expect ((x) != 0, 1)
119 #define unlikely(x) __builtin_expect ((x) != 0, 0)
121 #define likely(x) (x)
122 #define unlikely(x) (x)
125 #define BITS_IN_BUF (8)
127 #define LOG(msg) fprintf (stderr, msg)
128 #define LOGF(format, args...) fprintf (stderr, format, args)
130 static inline void bs_write( bs_transrate_t *s, unsigned int val, int n )
133 assert(!(val & (0xffffffffU << n)));
135 while (unlikely(n >= s->i_bit_out))
137 s->p_w[0] = (s->i_bit_out_cache << s->i_bit_out ) | (val >> (n - s->i_bit_out));
140 s->i_bit_out_cache = 0;
141 val &= ~(0xffffffffU << n);
142 s->i_bit_out = BITS_IN_BUF;
147 s->i_bit_out_cache = (s->i_bit_out_cache << n) | val;
151 assert(s->i_bit_out > 0);
152 assert(s->i_bit_out <= BITS_IN_BUF);
155 static inline void bs_refill( bs_transrate_t *s )
157 assert((s->p_r - s->p_c) >= 1);
158 s->i_bit_in_cache |= s->p_c[0] << (24 - s->i_bit_in);
163 static inline void bs_flush( bs_transrate_t *s, unsigned int n )
165 assert(s->i_bit_in >= n);
167 s->i_bit_in_cache <<= n;
170 assert( (!n) || ((n>0) && !(s->i_bit_in_cache & 0x1)) );
172 while (unlikely(s->i_bit_in < 24)) bs_refill( s );
175 static inline unsigned int bs_read( bs_transrate_t *s, unsigned int n )
177 unsigned int Val = ((unsigned int)s->i_bit_in_cache) >> (32 - n);
182 static inline unsigned int bs_copy( bs_transrate_t *s, unsigned int n )
184 unsigned int Val = bs_read( s, n);
189 static inline void bs_flush_read( bs_transrate_t *s )
191 int i = s->i_bit_in & 0x7;
194 assert(((unsigned int)s->i_bit_in_cache) >> (32 - i) == 0);
195 s->i_bit_in_cache <<= i;
198 s->p_c += -1 * (s->i_bit_in >> 3);
201 static inline void bs_flush_write( bs_transrate_t *s )
203 if( s->i_bit_out != 8 ) bs_write(s, 0, s->i_bit_out);
206 int scale_quant( transrate_t *tr, double qrate );
207 int transrate_mb( transrate_t *tr, RunLevel blk[6][65], RunLevel new_blk[6][65], int i_cbp, int intra );
208 void get_intra_block_B14( transrate_t *tr, RunLevel *blk );
209 void get_intra_block_B15( transrate_t *tr, RunLevel *blk );
210 int get_non_intra_block( transrate_t *tr, RunLevel *blk );
211 void putnonintrablk( bs_transrate_t *bs, RunLevel *blk);
212 void putintrablk( bs_transrate_t *bs, RunLevel *blk, int vlcformat);
214 int process_frame( sout_stream_t *p_stream, sout_stream_id_t *id,
215 block_t *in, block_t **out, int i_handicap );