* modules/stream_out/transrate:

  - split transrate.c
  - you can specify a maximum gop length on which to perform transrating,
    to avoid adding to much delay in the sout pipeline (shaping= option)
  - fixed a bug where you couldn't transrate a transcoded stream

modules/stream_out/transrate/Modules.am

-SOURCES_stream_out_transrate = transrate.c getvlc.h putvlc.h
+SOURCES_stream_out_transrate = transrate.c frame.c getvlc.h putvlc.h

modules/stream_out/transrate/transrate.h

+/*****************************************************************************
+ * transrate.h: MPEG2 video transrating module
+ *****************************************************************************
+ * Copyright (C) 2003 VideoLAN
+ * Copyright (C) 2003 Antoine Missout
+ * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
+ * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
+ * $Id: transrate.h,v 1.1 2004/03/03 11:20:52 massiot Exp $
+ *
+ * Authors: Christophe Massiot <massiot@via.ecp.fr>
+ *          Laurent Aimar <fenrir@via.ecp.fr>
+ *          Antoine Missout
+ *          Michel Lespinasse <walken@zoy.org>
+ *          Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
+ *
+ * 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.
+ *****************************************************************************/
+
+/*****************************************************************************
+ * sout_stream_id_t:
+ *****************************************************************************/
+
+typedef struct
+{
+    uint8_t run;
+    short level;
+} RunLevel;
+
+typedef struct
+{
+    uint8_t *p_c;
+    uint8_t *p_r;
+    uint8_t *p_w;
+    uint8_t *p_ow;
+    uint8_t *p_rw;
+
+    int i_bit_in;
+    int i_bit_out;
+    uint32_t i_bit_in_cache;
+    uint32_t i_bit_out_cache;
+
+    uint32_t i_byte_in;
+    uint32_t i_byte_out;
+} bs_transrate_t;
+
+typedef struct
+{
+    bs_transrate_t bs;
+
+    /* MPEG2 state */
+
+    // seq header
+    unsigned int horizontal_size_value;
+    unsigned int vertical_size_value;
+
+    // pic header
+    unsigned int picture_coding_type;
+
+    // pic code ext
+    unsigned int f_code[2][2];
+    /* unsigned int intra_dc_precision; */
+    unsigned int picture_structure;
+    unsigned int frame_pred_frame_dct;
+    unsigned int concealment_motion_vectors;
+    unsigned int q_scale_type;
+    unsigned int intra_vlc_format;
+    /* unsigned int alternate_scan; */
+
+    // slice or mb
+    // quantizer_scale_code
+    unsigned int quantizer_scale;
+    unsigned int new_quantizer_scale;
+    unsigned int last_coded_scale;
+    int   h_offset, v_offset;
+
+    // mb
+    double quant_corr, fact_x, current_fact_x;
+    int level_i, level_p;
+
+    ssize_t i_current_gop_size, i_wanted_gop_size, i_new_gop_size;
+} transrate_t;
+
+
+struct sout_stream_id_t
+{
+    void            *id;
+    vlc_bool_t      b_transrate;
+
+    sout_buffer_t   *p_current_buffer;
+    sout_buffer_t   *p_next_gop;
+    mtime_t         i_next_gop_duration;
+    size_t          i_next_gop_size;
+
+    transrate_t     tr;
+};
+
+