C: wheatgerm
D: Inital work on vfw
S: Nova Scotia, Canada
+
+N: Måns Rullgård
+E: mru AT mru.ath DOT cx
+D: Rate control
+S: Oslo, Norway
param->b_cabac = 0;
param->i_cabac_init_idc = -1;
+ param->b_cbr = 0;
param->i_bitrate = 3000;
+ param->i_rc_buffer_size = 0;
+ param->i_rc_init_buffer = 0;
+ param->i_rc_sens = 100;
param->i_qp_constant = 26;
+ param->i_qp_min = 0;
+ param->i_qp_max = 51;
+ param->i_qp_step = 4;
+ param->f_ip_factor = 2.0;
+ param->f_pb_factor = 2.0;
param->analyse.intra = X264_ANALYSE_I4x4;
param->analyse.inter = X264_ANALYSE_I4x4 | X264_ANALYSE_PSUB16x16;
/* rate control encoding only */
x264_ratecontrol_t *rc;
+ int i_last_inter_size;
+ int i_last_intra_size;
+ int i_last_intra_qp;
+
/* stats */
struct
{
#include "../core/macroblock.h"
#include "macroblock.h"
#include "me.h"
+#include "ratecontrol.h"
typedef struct
{
x264_mb_analysis_t analysis;
int i;
- /* qp TODO implement a nice RC */
- h->mb.qp[h->mb.i_mb_xy] = x264_clip3( h->pps->i_pic_init_qp + h->sh.i_qp_delta + 0, 0, 51 );
+ h->mb.qp[h->mb.i_mb_xy] = x264_ratecontrol_qp(h);
/* FIXME check if it's 12 */
if( h->mb.qp[h->mb.i_mb_xy] - h->mb.i_last_qp < -12 )
#include "macroblock.h"
//#define DEBUG_MB_TYPE
-#define DEBUG_DUMP_FRAME 1
+#define DEBUG_DUMP_FRAME 0
static int64_t i_mtime_encode_frame = 0;
x264_csp_init( h->param.cpu, h->param.i_csp, &h->csp );
/* rate control */
- h->rc = x264_ratecontrol_new( &h->param );
+ x264_ratecontrol_new( h );
+
+ h->i_last_intra_size = 0;
+ h->i_last_inter_size = 0;
/* stat */
h->stat.i_slice_count[SLICE_TYPE_I] = 0;
const int i_mb_y = mb_xy / h->sps->i_mb_width;
const int i_mb_x = mb_xy % h->sps->i_mb_width;
+ int mb_spos = bs_pos(&h->out.bs);
+
/* load cache */
x264_macroblock_cache_load( h, i_mb_x, i_mb_y );
x264_macroblock_cache_save( h );
i_mb_count[h->mb.i_type]++;
+
+ x264_ratecontrol_mb(h, bs_pos(&h->out.bs) - mb_spos);
}
if( h->param.b_cabac )
}
fenc->i_poc = h->i_poc;
- if( fenc->i_type == X264_TYPE_IDR )
- {
- h->frames.i_last_idr = 0;
- h->frames.i_last_i = 0;
- }
- else if( fenc->i_type == X264_TYPE_I )
- {
- h->frames.i_last_idr++;
- h->frames.i_last_i = 0;
- }
- else
- {
- h->frames.i_last_i++;
- }
/* 3: Update current/next */
if( fenc->i_type == X264_TYPE_B )
}
x264_frame_put( h->frames.unused, h->fenc ); /* Safe to do it now, we don't use frames.unused for the rest */
+do_encode:
+
+ if( h->fenc->i_type == X264_TYPE_IDR )
+ {
+ h->frames.i_last_idr = 0;
+ h->frames.i_last_i = 0;
+ }
+ else if( h->fenc->i_type == X264_TYPE_I )
+ {
+ h->frames.i_last_idr++;
+ h->frames.i_last_i = 0;
+ }
+ else
+ {
+ h->frames.i_last_i++;
+ }
+
/* ------------------- Setup frame context ----------------------------- */
/* 5: Init data dependant of frame type */
TIMER_START( i_mtime_encode_frame );
/* ------------------- Init ----------------------------- */
/* Init the rate control */
- x264_ratecontrol_start( h->rc, i_slice_type );
- i_global_qp = x264_ratecontrol_qp( h->rc );
+ x264_ratecontrol_start( h, i_slice_type );
+ i_global_qp = x264_ratecontrol_qp( h );
if( h->fenc->i_qpplus1 > 0 )
{
i_global_qp = x264_clip3( h->fenc->i_qpplus1 - 1, 0, 51 );
/* Write the slice */
x264_slice_write( h, i_nal_type, i_nal_ref_idc, i_mb_count );
+#if 1
+ if( i_slice_type != SLICE_TYPE_I)
+ {
+ /* Bad P will be reencoded as I */
+ if( i_slice_type == SLICE_TYPE_P &&
+ h->out.nal[h->out.i_nal-1].i_payload > h->i_last_intra_size +
+ h->i_last_intra_size * (3+h->i_last_intra_qp - i_global_qp) / 16 &&
+ i_mb_count[I_4x4] + i_mb_count[I_16x16] > i_mb_count[P_SKIP] + i_mb_count[P_L0]/2 &&
+ h->out.nal[h->out.i_nal-1].i_payload > 2 * h->i_last_inter_size &&
+ h->frames.i_last_i > 4)
+ {
+
+ fprintf( stderr, "scene cut at %d size=%d last I:%d last P:%d Intra:%d Skip:%d PL0:%d\n",
+ h->i_frame - 1,
+ h->out.nal[h->out.i_nal-1].i_payload,
+ h->i_last_intra_size, h->i_last_inter_size,
+ i_mb_count[I_4x4] + i_mb_count[I_16x16],
+ i_mb_count[P_SKIP],
+ i_mb_count[P_L0] );
+
+ /* Restore frame num */
+ h->i_frame_num--;
+
+ /* Do IDR if needed and if we can (won't work with B frames) */
+ if( h->frames.next[0] == NULL &&
+ h->frames.i_last_idr + 1 >= h->param.i_idrframe )
+ {
+ /* Reset */
+ h->i_poc = 0;
+ h->i_frame_num = 0;
+
+ /* Reinit field of fenc */
+ h->fenc->i_type = X264_TYPE_IDR;
+ h->fenc->i_poc = h->i_poc;
+
+ /* Next Poc */
+ h->i_poc += 2;
+ }
+ else
+ {
+ h->fenc->i_type = X264_TYPE_I;
+ }
+ goto do_encode;
+ }
+ h->i_last_inter_size = h->out.nal[h->out.i_nal-1].i_payload;
+ }
+ else
+ {
+ h->i_last_intra_size = h->out.nal[h->out.i_nal-1].i_payload;
+ h->i_last_intra_qp = i_global_qp;
+ }
+#endif
+
/* End bitstream, set output */
*pi_nal = h->out.i_nal;
*pp_nal = &h->out.nal[0];
/* increase frame count */
h->i_frame++;
- /* update rc */
- x264_ratecontrol_end( h->rc, h->out.nal[h->out.i_nal-1].i_payload * 8 );
-
/* restore CPU state (before using float again) */
x264_cpu_restore( h->param.cpu );
+ /* update rc */
+ x264_ratecontrol_end( h, h->out.nal[h->out.i_nal-1].i_payload * 8 );
+
TIMER_STOP( i_mtime_encode_frame );
/* ---------------------- Compute/Print statistics --------------------- */
}
/* print stat */
- fprintf( stderr, "frame=%4d NAL=%d Slice:%c Poc:%-3d I4x4:%-5d I16x16:%-5d P:%-5d SKIP:%-3d size=%d bytes PSNR Y:%2.2f U:%2.2f V:%2.2f\n",
+ fprintf( stderr, "frame=%4d QP=%i NAL=%d Slice:%c Poc:%-3d I4x4:%-5d I16x16:%-5d P:%-5d SKIP:%-3d size=%d bytes PSNR Y:%2.2f U:%2.2f V:%2.2f\n",
h->i_frame - 1,
+ i_global_qp,
i_nal_ref_idc,
i_slice_type == SLICE_TYPE_I ? 'I' : (i_slice_type == SLICE_TYPE_P ? 'P' : 'B' ),
frame_psnr->i_poc,
}
/* rc */
- x264_ratecontrol_delete( h->rc );
+ x264_ratecontrol_delete( h );
x264_macroblock_cache_end( h );
x264_free( h->out.p_bitstream );
* Copyright (C) 2003 Laurent Aimar
* $Id: ratecontrol.c,v 1.1 2004/06/03 19:27:08 fenrir Exp $
*
- * Authors: Laurent Aimar <fenrir@via.ecp.fr>
+ * Authors: Måns Rullgård <mru@mru.ath.cx>
*
* 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
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
*****************************************************************************/
+#define _ISOC99_SOURCE
+
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
+#include <math.h>
+#include <limits.h>
#include "../core/common.h"
+#include "../core/cpu.h"
#include "ratecontrol.h"
+struct x264_ratecontrol_t
+{
+ /* constants */
+ float fps;
+ int gop_size;
+ int bitrate;
+ int nmb; /* number of MBs */
+ int buffer_size;
+ int rcbufrate;
+ int init_qp;
+
+ int gop_qp;
+ int buffer_fullness;
+ int frames; /* frames in current gop */
+ int pframes;
+ int slice_type;
+ int mb; /* MBs processed in current frame */
+ int bits_gop; /* allocated bits current gop */
+ int bits_last_gop; /* bits consumed in gop */
+ int qp; /* qp for current frame */
+ int qpm; /* qp for next MB */
+ int qpa; /* average qp for last frame */
+ int qps;
+ int qp_avg_p; /* average QP for P frames */
+ int qp_last_p;
+ int fbits; /* bits allocated for current frame */
+ int ufbits; /* bits used for current frame */
+ int nzcoeffs; /* # of 0-quantized coefficients */
+ int ncoeffs; /* total # of coefficients */
+ int overhead;
+};
-x264_ratecontrol_t *x264_ratecontrol_new( x264_param_t *param )
+int x264_ratecontrol_new( x264_t *h )
{
x264_ratecontrol_t *rc = x264_malloc( sizeof( x264_ratecontrol_t ) );
+ float bpp;
+
+ memset(rc, 0, sizeof(*rc));
+
+ rc->fps = h->param.f_fps > 0.1 ? h->param.f_fps : 25.0f;
+ rc->gop_size = h->param.i_iframe;
+ rc->bitrate = h->param.i_bitrate * 1000;
+ rc->nmb = ((h->param.i_width + 15) / 16) * ((h->param.i_height + 15) / 16);
+
+ rc->qp = h->param.i_qp_constant;
+ rc->qpa = rc->qp;
+ rc->qpm = rc->qp;
- rc->fps = param->f_fps > 0.1 ? param->f_fps : 25.0f;
- rc->i_iframe = param->i_iframe;
- rc->i_bitrate = param->i_bitrate * 1000;
+ rc->buffer_size = h->param.i_rc_buffer_size;
+ if(rc->buffer_size <= 0)
+ rc->buffer_size = rc->bitrate / 2;
+ rc->buffer_fullness = h->param.i_rc_init_buffer;
+ rc->rcbufrate = rc->bitrate / rc->fps;
- rc->i_qp_last = 26;
- rc->i_qp = param->i_qp_constant;
+ bpp = rc->bitrate / (rc->fps * h->param.i_width * h->param.i_height);
+ if(bpp <= 0.6)
+ rc->init_qp = 31;
+ else if(bpp <= 1.4)
+ rc->init_qp = 25;
+ else if(bpp <= 2.4)
+ rc->init_qp = 20;
+ else
+ rc->init_qp = 10;
+ rc->gop_qp = rc->init_qp;
- rc->i_frames = 0;
- rc->i_size = 0;
+ rc->bits_last_gop = 0;
- return rc;
+/* fprintf(stderr, "%f fps, %i bps, bufsize %i\n", */
+/* rc->fps, rc->bitrate, rc->buffer_size); */
+
+ h->rc = rc;
+
+ return 0;
}
-void x264_ratecontrol_delete( x264_ratecontrol_t *rc )
+void x264_ratecontrol_delete( x264_t *h )
{
+ x264_ratecontrol_t *rc = h->rc;
x264_free( rc );
}
-void x264_ratecontrol_start( x264_ratecontrol_t *rc, int i_slice_type )
+void x264_ratecontrol_start( x264_t *h, int i_slice_type )
{
- rc->i_slice_type = i_slice_type;
+ x264_ratecontrol_t *rc = h->rc;
+ int gframes, iframes, pframes, bframes;
+ int minbits, maxbits;
+ int gbits, fbits;
+ int zn = 0;
+ float kp;
+ int gbuf;
+
+ if(!h->param.b_cbr)
+ return;
+
+ x264_cpu_restore( h->param.cpu );
+
+ rc->slice_type = i_slice_type;
+
+ switch(i_slice_type){
+ case SLICE_TYPE_I:
+ gbuf = rc->buffer_fullness + (rc->gop_size-1) * rc->rcbufrate;
+ rc->bits_gop = gbuf - rc->buffer_size / 2;
+
+ if(!rc->mb && rc->pframes){
+ int qp = (float) rc->qp_avg_p / rc->pframes + 0.5;
+#if 0 /* JM does this without explaining why */
+ int gdq = (float) rc->gop_size / 15 + 0.5;
+ if(gdq > 2)
+ gdq = 2;
+ qp -= gdq;
+ if(qp > rc->qp_last_p - 2)
+ qp--;
+#endif
+ qp = x264_clip3(qp, rc->gop_qp - 4, rc->gop_qp + 4);
+ qp =
+ x264_clip3(qp, h->param.i_qp_min, h->param.i_qp_max);
+ rc->gop_qp = qp;
+ } else {
+ rc->gop_qp = rc->init_qp;
+ }
+
+ kp = h->param.f_ip_factor * h->param.f_pb_factor;
+
+ rc->bits_last_gop = 0;
+ rc->frames = 0;
+ rc->pframes = 0;
+ rc->qp_avg_p = 0;
+ break;
+
+ case SLICE_TYPE_P:
+ kp = h->param.f_pb_factor;
+ break;
+
+ case SLICE_TYPE_B:
+ kp = 1.0;
+ break;
+
+ default:
+ fprintf(stderr, "x264: ratecontrol: unknown slice type %i\n",
+ i_slice_type);
+ kp = 1.0;
+ break;
+ }
+
+ gframes = rc->gop_size - rc->frames;
+ iframes = gframes / rc->gop_size;
+ pframes = gframes / (h->param.i_bframe + 1) - iframes;
+ bframes = gframes - pframes - iframes;
+
+ gbits = rc->bits_gop - rc->bits_last_gop;
+ fbits = kp * gbits /
+ (h->param.f_ip_factor * h->param.f_pb_factor * iframes +
+ h->param.f_pb_factor * pframes + bframes);
+
+ minbits = rc->buffer_fullness + rc->rcbufrate - rc->buffer_size;
+ if(minbits < 0)
+ minbits = 0;
+ maxbits = rc->buffer_fullness;
+ rc->fbits = x264_clip3(fbits, minbits, maxbits);
+
+ if(i_slice_type == SLICE_TYPE_I){
+ rc->qp = rc->gop_qp;
+ } else if(rc->ncoeffs){
+ int dqp;
+
+ zn = rc->ncoeffs -
+ rc->fbits * (rc->ncoeffs - rc->nzcoeffs) / rc->ufbits;
+ dqp = h->param.i_rc_sens * exp2f((float) rc->qpa / 6) *
+ (zn - rc->nzcoeffs) / rc->nzcoeffs;
+ dqp = x264_clip3(dqp, -h->param.i_qp_step, h->param.i_qp_step);
+ rc->qp = rc->qpa + dqp;
+ }
+
+ if(rc->fbits > 0.8 * maxbits)
+ rc->qp += 1;
+ else if(rc->fbits > 0.9 * maxbits)
+ rc->qp += 2;
+ else if(rc->fbits < 1.2 * minbits)
+ rc->qp -= 1;
+ else if(rc->fbits < 1.1 * minbits)
+ rc->qp -= 2;
+
+ rc->qp = x264_clip3(rc->qp, h->param.i_qp_min, h->param.i_qp_max);
+ rc->qpm = rc->qp;
+
+/* fprintf(stderr, "fbits=%i, qp=%i, z=%i, min=%i, max=%i\n", */
+/* rc->fbits, rc->qpm, zn, minbits, maxbits); */
+
+ rc->fbits -= rc->overhead;
+ rc->ufbits = 0;
+ rc->ncoeffs = 0;
+ rc->nzcoeffs = 0;
+ rc->mb = 0;
+ rc->qps = 0;
}
-int x264_ratecontrol_qp( x264_ratecontrol_t *rc )
+void x264_ratecontrol_mb( x264_t *h, int bits )
{
- return x264_clip3( rc->i_qp, 1, 51 );
+ x264_ratecontrol_t *rc = h->rc;
+ int rbits;
+ int zn, enz;
+ int dqp;
+ int i;
+
+ x264_cpu_restore( h->param.cpu );
+
+ rc->qps += rc->qpm;
+ rc->ufbits += bits;
+ rc->mb++;
+
+ for(i = 0; i < 16 + 8; i++)
+ rc->nzcoeffs += 16 - h->mb.cache.non_zero_count[x264_scan8[i]];
+ rc->ncoeffs += 16 * (16 + 8);
+
+ if(rc->mb < rc->nmb / 16)
+ return;
+ else if(rc->mb == rc->nmb)
+ return;
+
+ rbits = rc->fbits - rc->ufbits;
+/* if(rbits < 0) */
+/* rbits = 0; */
+
+ zn = (rc->nmb - rc->mb) * 16 * 24;
+ if(rc->ufbits)
+ zn -= rbits * (rc->ncoeffs - rc->nzcoeffs) / rc->ufbits;
+ enz = rc->nzcoeffs * (rc->nmb - rc->mb) / rc->mb;
+ dqp = (float) 2*h->param.i_rc_sens * exp2f((float) rc->qps / rc->mb / 6) *
+ (zn - enz) / enz;
+ rc->qpm = x264_clip3(rc->qpm + dqp, rc->qp - 3, rc->qp + 3);
+ if(rbits <= 0)
+ rc->qpm++;
+ rc->qpm = x264_clip3(rc->qpm, h->param.i_qp_min, h->param.i_qp_max);
}
-void x264_ratecontrol_end( x264_ratecontrol_t *rc, int bits )
+int x264_ratecontrol_qp( x264_t *h )
{
- return;
-#if 0
- int i_avg;
- int i_target = rc->i_bitrate / rc->fps;
- int i_qp = rc->i_qp;
+ return h->rc->qpm;
+}
- rc->i_qp_last = rc->i_qp;
- rc->i_frames++;
- rc->i_size += bits / 8;
+void x264_ratecontrol_end( x264_t *h, int bits )
+{
+ x264_ratecontrol_t *rc = h->rc;
- i_avg = 8 * rc->i_size / rc->i_frames;
+ if(!h->param.b_cbr)
+ return;
- if( rc->i_slice_type == SLICE_TYPE_I )
- {
- i_target = i_target * 20 / 10;
+ rc->buffer_fullness += rc->rcbufrate - bits;
+ if(rc->buffer_fullness < 0){
+ fprintf(stderr, "x264: buffer underflow %i\n", rc->buffer_fullness);
+ rc->buffer_fullness = 0;
}
- if( i_avg > i_target * 11 / 10 )
- {
- i_qp = rc->i_qp + ( i_avg / i_target - 1 );
- }
- else if( i_avg < i_target * 9 / 10 )
- {
- i_qp = rc->i_qp - ( i_target / i_avg - 1 );
+ rc->qpa = rc->qps / rc->mb;
+ if(rc->slice_type == SLICE_TYPE_P){
+ rc->qp_avg_p += rc->qpa;
+ rc->qp_last_p = rc->qpa;
+ rc->pframes++;
}
- rc->i_qp = x264_clip3( i_qp, rc->i_qp_last - 2, rc->i_qp_last + 2 );
-#endif
+ rc->overhead = bits - rc->ufbits;
+
+/* fprintf(stderr, " bits=%i, qp=%i, z=%i, zr=%6.3f, buf=%i\n", */
+/* bits, rc->qpa, rc->nzcoeffs, */
+/* (float) rc->nzcoeffs / rc->ncoeffs, rc->buffer_fullness); */
+
+ rc->bits_last_gop += bits;
+ rc->frames++;
+ rc->mb = 0;
}
#ifndef _RATECONTROL_H
#define _RATECONTROL_H 1
-struct x264_ratecontrol_t
-{
- float fps;
- int i_iframe;
+int x264_ratecontrol_new ( x264_t * );
+void x264_ratecontrol_delete( x264_t * );
- int i_bitrate;
- int i_qp_last;
- int i_qp;
-
- int i_slice_type;
-
- int i_frames;
- int64_t i_size;
-
-};
-
-
-x264_ratecontrol_t *x264_ratecontrol_new ( x264_param_t * );
-void x264_ratecontrol_delete( x264_ratecontrol_t * );
-
-void x264_ratecontrol_start( x264_ratecontrol_t *, int i_slice_type );
-int x264_ratecontrol_qp( x264_ratecontrol_t * );
-void x264_ratecontrol_end( x264_ratecontrol_t *, int bits );
+void x264_ratecontrol_start( x264_t *, int i_slice_type );
+void x264_ratecontrol_mb( x264_t *, int bits );
+int x264_ratecontrol_qp( x264_t * );
+void x264_ratecontrol_end( x264_t *, int bits );
#endif
" -r, --ref <integer> Number of references\n"
" -n, --nf Disable loop filter\n"
" -f, --filter <alpha:beta> Loop filter AplhaCO and Beta parameters\n"
+ "\n"
" -q, --qp <integer> Set QP\n"
- " -B, --bitrate <integer> Set bitrate [broken]\n"
+ " -B, --bitrate <integer> Set bitrate\n"
+ " --qpmin <integer> Set min QP\n"
+ " --qpmax <integer> Set max QP\n"
+ " --qpstep <integer> Set max QP step\n"
+ " --rcsens <integer> RC sensitivity\n"
+ " --rcbuf <integer> Size of VBV buffer\n"
+ " --rcinitbuf <integer> Initial VBV buffer occupancy\n"
"\n"
" -A, --analyse <string> Analyse options:\n"
" - i4x4\n"
for( ;; )
{
int long_options_index;
+#define OPT_QPMIN 256
+#define OPT_QPMAX 257
+#define OPT_QPSTEP 258
+#define OPT_RCSENS 259
+#define OPT_IPRATIO 260
+#define OPT_PBRATIO 261
+#define OPT_RCBUF 262
+#define OPT_RCIBUF 263
static struct option long_options[] =
{
{ "help", no_argument, NULL, 'h' },
{ "filter", required_argument, NULL, 'f' },
{ "cabac", no_argument, NULL, 'c' },
{ "qp", required_argument, NULL, 'q' },
+ { "qpmin", required_argument, NULL, OPT_QPMIN },
+ { "qpmax", required_argument, NULL, OPT_QPMAX },
+ { "qpstep", required_argument, NULL, OPT_QPSTEP },
{ "ref", required_argument, NULL, 'r' },
{ "no-asm", no_argument, NULL, 'C' },
{ "sar", required_argument, NULL, 's' },
{ "output", required_argument, NULL, 'o' },
{ "analyse", required_argument, NULL, 'A' },
+ { "rcsens", required_argument, NULL, OPT_RCSENS },
+ { "rcbuf", required_argument, NULL, OPT_RCBUF },
+ { "rcinitbuf",required_argument, NULL, OPT_RCIBUF },
+ { "ipratio", required_argument, NULL, OPT_IPRATIO },
+ { "pbratio", required_argument, NULL, OPT_PBRATIO },
{0, 0, 0, 0}
};
break;
case 'B':
param->i_bitrate = atol( optarg );
+ param->b_cbr = 1;
break;
case 'b':
param->i_bframe = atol( optarg );
case 'q':
param->i_qp_constant = atoi( optarg );
break;
+ case OPT_QPMIN:
+ param->i_qp_min = atoi( optarg );
+ break;
+ case OPT_QPMAX:
+ param->i_qp_max = atoi( optarg );
+ break;
+ case OPT_QPSTEP:
+ param->i_qp_step = atoi( optarg );
+ break;
case 'r':
param->i_frame_reference = atoi( optarg );
break;
if( strstr( optarg, "psub16x16" ) ) param->analyse.inter |= X264_ANALYSE_PSUB16x16;
if( strstr( optarg, "psub8x8" ) ) param->analyse.inter |= X264_ANALYSE_PSUB8x8;
break;
-
+ case OPT_RCBUF:
+ param->i_rc_buffer_size = atoi(optarg);
+ break;
+ case OPT_RCIBUF:
+ param->i_rc_init_buffer = atoi(optarg);
+ break;
+ case OPT_RCSENS:
+ param->i_rc_sens = atoi(optarg);
+ break;
+ case OPT_IPRATIO:
+ param->f_ip_factor = atoi(optarg);
+ break;
+ case OPT_PBRATIO:
+ param->f_pb_factor = atoi(optarg);
+ break;
default:
fprintf( stderr, "unknown option (%c)\n", optopt );
return -1;
int i_cabac_init_idc;
int i_qp_constant; /* 1-51 */
- int i_bitrate; /* not working yet */
+ int i_qp_min; /* min allowed QP value */
+ int i_qp_max; /* max allowed QP value */
+ int i_qp_step; /* max QP step between frames */
+
+ int b_cbr; /* constant bitrate */
+ int i_bitrate;
+ int i_rc_buffer_size;
+ int i_rc_init_buffer;
+ int i_rc_sens; /* rate control sensitivity */
+ float f_ip_factor;
+ float f_pb_factor;
/* Encoder analyser parameters */
struct
projects / libx264 / commitdiff