videolan
/
vlc
mirror of https://gitea.goldendeliverer.com/videolan/vlc.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
40878 Commits
7 Branches
132 Tags
718 MiB
 
 
 
 
 
 
Tree: c0dccd6f57
Branches Tags
${ item.name }
Create tag ${ searchTerm }
Create branch ${ searchTerm }
from 'c0dccd6f57'
${ noResults }
vlc/modules/codec/dirac.c

981 lines
36 KiB
Raw Blame History

/*****************************************************************************
* dirac.c: Dirac encoder module making use of libdirac (dirac-research).
* (http://www.bbc.co.uk/rd/projects/dirac/index.shtml)
* ##
* ## NB, this is a temporary encoder only module until schroedinger
* ## offers superior encoding quality than dirac-research
* ##
*****************************************************************************
* Copyright (C) 2004-2008 the VideoLAN team
* $Id$
*
* Authors: Gildas Bazin <gbazin@videolan.org>
* Rewritten: David Flynn <davidf at rd.bbc.co.uk>
*
* 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <limits.h>
#include <assert.h>
#include <vlc_common.h>
#include <vlc_plugin.h>
#include <vlc_codec.h>
#include <vlc_sout.h>
#include <libdirac_encoder/dirac_encoder.h>
#ifndef DIRAC_RESEARCH_VERSION_ATLEAST
# define DIRAC_RESEARCH_VERSION_ATLEAST(x,y,z) 0
#endif
/*****************************************************************************
* Local prototypes
*****************************************************************************/
static int OpenEncoder( vlc_object_t *p_this );
static void CloseEncoder( vlc_object_t *p_this );
static block_t *Encode( encoder_t *p_enc, picture_t *p_pict );
#define ENC_CFG_PREFIX "sout-dirac-"
#define ENC_QUALITY_FACTOR "quality"
#define ENC_QUALITY_FACTOR_TEXT N_("Constant quality factor")
#define ENC_QUALITY_FACTOR_LONGTEXT N_("If bitrate=0, use this value for constant quality")
#define ENC_TARGETRATE "bitrate"
#define ENC_TARGETRATE_TEXT N_("CBR bitrate (kbps)")
#define ENC_TARGETRATE_LONGTEXT N_("A value > 0 enables constant bitrate mode")
#define ENC_LOSSLESS "lossless"
#define ENC_LOSSLESS_TEXT N_("Enable lossless coding")
#define ENC_LOSSLESS_LONGTEXT N_("Lossless coding ignores bitrate and quality settings, " \
"allowing for perfect reproduction of the original")
#define ENC_PREFILTER "prefilter"
#define ENC_PREFILTER_TEXT N_("Prefilter")
#define ENC_PREFILTER_LONGTEXT N_("Enable adaptive prefiltering")
static const char *const enc_prefilter_list[] =
{ "none", "cwm", "rectlp", "diaglp" };
static const char *const enc_prefilter_list_text[] =
{ N_("none"), N_("Centre Weighted Median"),
N_("Rectangular Linear Phase"), N_("Diagonal Linear Phase") };
#define ENC_PREFILTER_STRENGTH "prefilter-strength"
#define ENC_PREFILTER_STRENGTH_TEXT N_("Amount of prefiltering")
#define ENC_PREFILTER_STRENGTH_LONGTEXT N_("Higher value implies more prefiltering")
#define ENC_CHROMAFMT "chroma-fmt"
#define ENC_CHROMAFMT_TEXT N_("Chroma format")
#define ENC_CHROMAFMT_LONGTEXT N_("Picking chroma format will force a " \
"conversion of the video into that format")
static const char *const enc_chromafmt_list[] =
{ "420", "422", "444" };
static const char *const enc_chromafmt_list_text[] =
{ N_("4:2:0"), N_("4:2:2"), N_("4:4:4") };
#define ENC_L1SEP "l1-sep"
#define ENC_L1SEP_TEXT N_("Distance between 'P' frames")
#define ENC_L1SEP_LONGTEXT ENC_L1SEP_TEXT
#define ENC_L1NUM "num-l1"
#define ENC_L1NUM_TEXT N_("Number of 'P' frames per GOP")
#define ENC_L1NUM_LONGTEXT ENC_L1NUM_TEXT
#define ENC_CODINGMODE "coding-mode"
#define ENC_CODINGMODE_TEXT N_("Picture coding mode")
#define ENC_CODINGMODE_LONGTEXT N_("Field coding is where interlaced fields are coded" \
" separately as opposed to a pseudo-progressive frame")
static const char *const enc_codingmode_list[] =
{ "auto", "progressive", "field" };
static const char *const enc_codingmode_list_text[] =
{ N_("auto - let encoder decide based upon input (Best)"),
N_("force coding frame as single picture"),
N_("force coding frame as separate interlaced fields"),
};
#define ENC_MCBLK_WIDTH "mc-blk-width"
#define ENC_MCBLK_WIDTH_TEXT N_("Width of motion compensation blocks")
#define ENC_MCBLK_WIDTH_LONGTEXT ""
#define ENC_MCBLK_HEIGHT "mc-blk-height"
#define ENC_MCBLK_HEIGHT_TEXT N_("Height of motion compensation blocks")
#define ENC_MCBLK_HEIGHT_LONGTEXT ""
/* also known as XBSEP and YBSEP */
#define ENC_MCBLK_OVERLAP "mc-blk-overlap"
#define ENC_MCBLK_OVERLAP_TEXT N_("Block overlap (%)")
#define ENC_MCBLK_OVERLAP_LONGTEXT N_("Amount that each motion block should " \
"be overlapped by its neighbours")
/* advanced option only */
#define ENC_MCBLK_XBLEN "mc-blk-xblen"
#define ENC_MCBLK_XBLEN_TEXT N_("xblen")
#define ENC_MCBLK_XBLEN_LONGTEXT N_("Total horizontal block length including overlaps")
/* advanded option only */
#define ENC_MCBLK_YBLEN "mc-blk-yblen"
#define ENC_MCBLK_YBLEN_TEXT N_("yblen")
#define ENC_MCBLK_YBLEN_LONGTEXT N_("Total vertical block length including overlaps")
#define ENC_MVPREC "mv-prec"
#define ENC_MVPREC_TEXT N_("Motion vector precision")
#define ENC_MVPREC_LONGTEXT N_("Motion vector precision in pels.")
static const char *const enc_mvprec_list[] =
{ "1", "1/2", "1/4", "1/8" };
#define ENC_ME_SIMPLESEARCH "me-simple-search"
#define ENC_ME_SIMPLESEARCH_TEXT N_("Simple ME search area x:y")
#define ENC_ME_SIMPLESEARCH_LONGTEXT N_("(Not recommended) Perform a simple (non hierarchical " \
"block matching motion vector search with search range " \
"of +/-x, +/-y")
#define ENC_ME_COMBINED "me-combined"
#define ENC_ME_COMBINED_TEXT N_("Three component motion estimation")
#define ENC_ME_COMBINED_LONGTEXT N_("Use chroma as part of the motion estimation process")
#define ENC_DWTINTRA "dwt-intra"
#define ENC_DWTINTRA_TEXT N_("Intra picture DWT filter")
#define ENC_DWTINTRA_LONGTEXT ENC_DWTINTRA_TEXT
#define ENC_DWTINTER "dwt-inter"
#define ENC_DWTINTER_TEXT N_("Inter picture DWT filter")
#define ENC_DWTINTER_LONGTEXT ENC_DWTINTER_TEXT
#define ENC_DWTDEPTH "dwt-depth"
#define ENC_DWTDEPTH_TEXT N_("Number of DWT iterations")
#define ENC_DWTDEPTH_LONGTEXT N_("Also known as DWT levels")
/* advanced option only */
#define ENC_MULTIQUANT "multi-quant"
#define ENC_MULTIQUANT_TEXT N_("Enable multiple quantizers")
#define ENC_MULTIQUANT_LONGTEXT N_("Enable multiple quantizers per subband (one per codeblock)")
/* advanced option only */
#define ENC_SPARTITION "spartition"
#define ENC_SPARTITION_TEXT N_("Enable spatial partitioning")
#define ENC_SPARTITION_LONGTEXT ENC_SPARTITION_TEXT
#define ENC_NOAC "noac"
#define ENC_NOAC_TEXT N_("Disable arithmetic coding")
#define ENC_NOAC_LONGTEXT N_("Use variable length codes instead, useful for very high bitrates")
/* visual modelling */
/* advanced option only */
#define ENC_CPD "cpd"
#define ENC_CPD_TEXT N_("cycles per degree")
#define ENC_CPD_LONGTEXT ENC_CPD_TEXT
static const char *const ppsz_enc_options[] = {
ENC_QUALITY_FACTOR, ENC_TARGETRATE, ENC_LOSSLESS, ENC_PREFILTER, ENC_PREFILTER_STRENGTH,
ENC_CHROMAFMT, ENC_L1SEP, ENC_L1NUM, ENC_CODINGMODE,
ENC_MCBLK_WIDTH, ENC_MCBLK_HEIGHT, ENC_MCBLK_OVERLAP,
ENC_MVPREC, ENC_ME_SIMPLESEARCH, ENC_ME_COMBINED,
ENC_DWTINTRA, ENC_DWTINTER, ENC_DWTDEPTH,
ENC_MULTIQUANT, ENC_SPARTITION, ENC_NOAC,
ENC_CPD,
NULL
};
/*****************************************************************************
* Module descriptor
*****************************************************************************/
vlc_module_begin()
set_category( CAT_INPUT )
set_subcategory( SUBCAT_INPUT_VCODEC )
set_description( N_("Dirac video encoder using dirac-research library") )
set_shortname( "Dirac" )
set_capability( "encoder", 100 )
set_callbacks( OpenEncoder, CloseEncoder )
add_float( ENC_CFG_PREFIX ENC_QUALITY_FACTOR, 5.5, NULL,
ENC_QUALITY_FACTOR_TEXT, ENC_QUALITY_FACTOR_LONGTEXT, false )
change_float_range(0., 10.);
add_integer( ENC_CFG_PREFIX ENC_TARGETRATE, -1, NULL,
ENC_TARGETRATE_TEXT, ENC_TARGETRATE_LONGTEXT, false )
change_integer_range(-1, INT_MAX);
add_bool( ENC_CFG_PREFIX ENC_LOSSLESS, false, NULL,
ENC_LOSSLESS_TEXT, ENC_LOSSLESS_LONGTEXT, false )
add_string( ENC_CFG_PREFIX ENC_PREFILTER, "diaglp", NULL,
ENC_PREFILTER_TEXT, ENC_PREFILTER_LONGTEXT, false )
change_string_list( enc_prefilter_list, enc_prefilter_list_text, 0 );
add_integer( ENC_CFG_PREFIX ENC_PREFILTER_STRENGTH, 1, NULL,
ENC_PREFILTER_STRENGTH_TEXT, ENC_PREFILTER_STRENGTH_LONGTEXT, false )
change_integer_range(0, 10);
add_string( ENC_CFG_PREFIX ENC_CHROMAFMT, "420", NULL,
ENC_CHROMAFMT_TEXT, ENC_CHROMAFMT_LONGTEXT, false )
change_string_list( enc_chromafmt_list, enc_chromafmt_list_text, 0 );
add_integer( ENC_CFG_PREFIX ENC_L1SEP, -1, NULL,
ENC_L1SEP_TEXT, ENC_L1SEP_LONGTEXT, false )
change_integer_range(-1, INT_MAX);
add_integer( ENC_CFG_PREFIX ENC_L1NUM, -1, NULL,
ENC_L1NUM_TEXT, ENC_L1NUM_LONGTEXT, false )
change_integer_range(-1, INT_MAX);
add_string( ENC_CFG_PREFIX ENC_CODINGMODE, "auto", NULL,
ENC_CODINGMODE_TEXT, ENC_CODINGMODE_LONGTEXT, false )
change_string_list( enc_codingmode_list, enc_codingmode_list_text, 0 );
add_string( ENC_CFG_PREFIX ENC_MVPREC, "1/2", NULL,
ENC_MVPREC_TEXT, ENC_MVPREC_LONGTEXT, false )
change_string_list( enc_mvprec_list, enc_mvprec_list, 0 );
add_integer( ENC_CFG_PREFIX ENC_MCBLK_WIDTH, -1, NULL,
ENC_MCBLK_WIDTH_TEXT, ENC_MCBLK_WIDTH_LONGTEXT, false )
change_integer_range(-1, INT_MAX);
add_integer( ENC_CFG_PREFIX ENC_MCBLK_HEIGHT, -1, NULL,
ENC_MCBLK_HEIGHT, ENC_MCBLK_HEIGHT_LONGTEXT, false )
change_integer_range(-1, INT_MAX);
add_integer( ENC_CFG_PREFIX ENC_MCBLK_OVERLAP, -1, NULL,
ENC_MCBLK_OVERLAP_TEXT, ENC_MCBLK_OVERLAP_LONGTEXT, false )
change_integer_range(-1, 100);
/* advanced option only */
add_integer( ENC_CFG_PREFIX ENC_MCBLK_XBLEN, -1, NULL,
ENC_MCBLK_XBLEN_TEXT, ENC_MCBLK_XBLEN_LONGTEXT, true )
change_integer_range(-1, INT_MAX);
/* advanced option only */
add_integer( ENC_CFG_PREFIX ENC_MCBLK_YBLEN, -1, NULL,
ENC_MCBLK_YBLEN_TEXT, ENC_MCBLK_YBLEN_LONGTEXT, true )
change_integer_range(-1, INT_MAX);
add_string( ENC_CFG_PREFIX ENC_ME_SIMPLESEARCH, "", NULL,
ENC_ME_SIMPLESEARCH_TEXT, ENC_ME_SIMPLESEARCH_LONGTEXT, false )
#if DIRAC_RESEARCH_VERSION_ATLEAST(1,0,1)
add_bool( ENC_CFG_PREFIX ENC_ME_COMBINED, true, NULL,
ENC_ME_COMBINED_TEXT, ENC_ME_COMBINED_LONGTEXT, false )
#endif
add_integer( ENC_CFG_PREFIX ENC_DWTINTRA, -1, NULL,
ENC_DWTINTRA_TEXT, ENC_DWTINTRA_LONGTEXT, false )
change_integer_range(-1, 6);
add_integer( ENC_CFG_PREFIX ENC_DWTINTER, -1, NULL,
ENC_DWTINTER_TEXT, ENC_DWTINTER_LONGTEXT, false )
change_integer_range(-1, 6);
add_integer( ENC_CFG_PREFIX ENC_DWTDEPTH, -1, NULL,
ENC_DWTDEPTH_TEXT, ENC_DWTDEPTH_LONGTEXT, false )
change_integer_range(-1, 4);
/* advanced option only */
/* NB, unforunately vlc doesn't have a concept of 'dont care' */
add_integer( ENC_CFG_PREFIX ENC_MULTIQUANT, -1, NULL,
ENC_MULTIQUANT_TEXT, ENC_MULTIQUANT_LONGTEXT, true )
change_integer_range(-1, 1);
/* advanced option only */
/* NB, unforunately vlc doesn't have a concept of 'dont care' */
add_integer( ENC_CFG_PREFIX ENC_SPARTITION, -1, NULL,
ENC_SPARTITION_TEXT, ENC_SPARTITION_LONGTEXT, true )
change_integer_range(-1, 1);
add_bool( ENC_CFG_PREFIX ENC_NOAC, false, NULL,
ENC_NOAC_TEXT, ENC_NOAC_LONGTEXT, false )
/* advanced option only */
add_float( ENC_CFG_PREFIX ENC_CPD, -1, NULL,
ENC_CPD_TEXT, ENC_CPD_LONGTEXT, true )
change_integer_range(-1, INT_MAX);
vlc_module_end()
/*****************************************************************************
* picture_pts_t : store pts alongside picture number, not carried through
* encoder
*****************************************************************************/
struct picture_pts_t
{
bool b_empty; /* entry is invalid */
uint32_t u_pnum; /* dirac picture number */
mtime_t i_pts; /* associated pts */
};
/*****************************************************************************
* encoder_sys_t : dirac encoder descriptor
*****************************************************************************/
#define PTS_TLB_SIZE 256
struct encoder_sys_t
{
dirac_encoder_t *p_dirac;
dirac_encoder_context_t ctx;
bool b_auto_field_coding;
uint8_t *p_buffer_in;
int i_buffer_in;
uint32_t i_input_picnum;
block_fifo_t *p_dts_fifo;
int i_buffer_out;
uint8_t *p_buffer_out;
block_t *p_chain;
struct picture_pts_t pts_tlb[PTS_TLB_SIZE];
mtime_t i_pts_offset;
mtime_t i_field_time;
};
static struct
{
unsigned int i_height;
int i_approx_fps;
VideoFormat i_vf;
} dirac_format_guess[] = {
/* Important: Keep this list ordered in ascending picture height */
{1, 0, VIDEO_FORMAT_CUSTOM},
{120, 15, VIDEO_FORMAT_QSIF525},
{144, 12, VIDEO_FORMAT_QCIF},
{240, 15, VIDEO_FORMAT_SIF525},
{288, 12, VIDEO_FORMAT_CIF},
{480, 30, VIDEO_FORMAT_SD_480I60},
{480, 15, VIDEO_FORMAT_4SIF525},
{576, 12, VIDEO_FORMAT_4CIF},
{576, 25, VIDEO_FORMAT_SD_576I50},
{720, 50, VIDEO_FORMAT_HD_720P50},
{720, 60, VIDEO_FORMAT_HD_720P60},
{1080, 24, VIDEO_FORMAT_DIGI_CINEMA_2K24},
{1080, 25, VIDEO_FORMAT_HD_1080I50},
{1080, 30, VIDEO_FORMAT_HD_1080I60},
{1080, 50, VIDEO_FORMAT_HD_1080P50},
{1080, 60, VIDEO_FORMAT_HD_1080P60},
{2160, 24, VIDEO_FORMAT_DIGI_CINEMA_4K24},
{2160, 50, VIDEO_FORMAT_UHDTV_4K50},
{2160, 60, VIDEO_FORMAT_UHDTV_4K60},
{3840, 50, VIDEO_FORMAT_UHDTV_8K50},
{3840, 60, VIDEO_FORMAT_UHDTV_8K60},
{0, 0, 0},
};
/*****************************************************************************
* ResetPTStlb: Purge all entries in @p_dec@'s PTS-tlb
*****************************************************************************/
static void ResetPTStlb( encoder_t *p_enc )
{
encoder_sys_t *p_sys = p_enc->p_sys;
for( int i=0; i<PTS_TLB_SIZE; i++)
{
p_sys->pts_tlb[i].b_empty = true;
}
}
/*****************************************************************************
* StorePicturePTS: Store the PTS value for a particular picture number
*****************************************************************************/
static void StorePicturePTS( encoder_t *p_enc, uint32_t u_pnum, mtime_t i_pts )
{
encoder_sys_t *p_sys = p_enc->p_sys;
for( int i=0; i<PTS_TLB_SIZE; i++ )
{
if( p_sys->pts_tlb[i].b_empty )
{
p_sys->pts_tlb[i].u_pnum = u_pnum;
p_sys->pts_tlb[i].i_pts = i_pts;
p_sys->pts_tlb[i].b_empty = false;
return;
}
}
msg_Err( p_enc, "Could not store PTS %"PRId64" for frame %u", i_pts, u_pnum );
}
/*****************************************************************************
* GetPicturePTS: Retrieve the PTS value for a particular picture number
*****************************************************************************/
static mtime_t GetPicturePTS( encoder_t *p_enc, uint32_t u_pnum )
{
encoder_sys_t *p_sys = p_enc->p_sys;
for( int i=0; i<PTS_TLB_SIZE; i++ )
{
if( !p_sys->pts_tlb[i].b_empty &&
p_sys->pts_tlb[i].u_pnum == u_pnum )
{
p_sys->pts_tlb[i].b_empty = true;
return p_sys->pts_tlb[i].i_pts;
}
}
msg_Err( p_enc, "Could not retrieve PTS for picture %u", u_pnum );
return 0;
}
/*****************************************************************************
* OpenEncoder: probe the encoder and return score
*****************************************************************************/
static int OpenEncoder( vlc_object_t *p_this )
{
encoder_t *p_enc = (encoder_t *)p_this;
encoder_sys_t *p_sys = p_enc->p_sys;
int i_tmp;
float f_tmp;
char *psz_tmp;
if( p_enc->fmt_out.i_codec != VLC_CODEC_DIRAC &&
!p_enc->b_force )
{
return VLC_EGENERIC;
}
if( !p_enc->fmt_in.video.i_frame_rate || !p_enc->fmt_in.video.i_frame_rate_base ||
!p_enc->fmt_in.video.i_height || !p_enc->fmt_in.video.i_width )
{
msg_Err( p_enc, "Framerate and picture dimensions must be non-zero" );
return VLC_EGENERIC;
}
/* Allocate the memory needed to store the decoder's structure */
if( ( p_sys = calloc( 1, sizeof(*p_sys) ) ) == NULL )
return VLC_ENOMEM;
p_enc->p_sys = p_sys;
p_enc->pf_encode_video = Encode;
p_enc->fmt_out.i_codec = VLC_CODEC_DIRAC;
p_enc->fmt_out.i_cat = VIDEO_ES;
if( ( p_sys->p_dts_fifo = block_FifoNew() ) == NULL )
{
CloseEncoder( p_this );
return VLC_ENOMEM;
}
ResetPTStlb( p_enc );
/* guess the video format based upon number of lines and picture height */
int i = 0;
VideoFormat guessed_video_fmt = VIDEO_FORMAT_CUSTOM;
/* Pick the dirac_video_format in this order of preference:
* 1. an exact match in frame height and an approximate fps match
* 2. the previous preset with a smaller number of lines.
*/
do
{
if( dirac_format_guess[i].i_height > p_enc->fmt_in.video.i_height )
{
guessed_video_fmt = dirac_format_guess[i-1].i_vf;
break;
}
if( dirac_format_guess[i].i_height != p_enc->fmt_in.video.i_height )
continue;
int src_fps = p_enc->fmt_in.video.i_frame_rate / p_enc->fmt_in.video.i_frame_rate_base;
int delta_fps = abs( dirac_format_guess[i].i_approx_fps - src_fps );
if( delta_fps > 2 )
continue;
guessed_video_fmt = dirac_format_guess[i].i_vf;
break;
} while( dirac_format_guess[++i].i_height );
dirac_encoder_context_init( &p_sys->ctx, guessed_video_fmt );
/* constants set from the input video format */
p_sys->ctx.src_params.width = p_enc->fmt_in.video.i_width;
p_sys->ctx.src_params.height = p_enc->fmt_in.video.i_height;
p_sys->ctx.src_params.frame_rate.numerator = p_enc->fmt_in.video.i_frame_rate;
p_sys->ctx.src_params.frame_rate.denominator = p_enc->fmt_in.video.i_frame_rate_base;
unsigned u_asr_num, u_asr_den;
vlc_ureduce( &u_asr_num, &u_asr_den,
p_enc->fmt_in.video.i_sar_num,
p_enc->fmt_in.video.i_sar_den, 0 );
p_sys->ctx.src_params.pix_asr.numerator = u_asr_num;
p_sys->ctx.src_params.pix_asr.denominator = u_asr_den;
config_ChainParse( p_enc, ENC_CFG_PREFIX, ppsz_enc_options, p_enc->p_cfg );
psz_tmp = var_GetString( p_enc, ENC_CFG_PREFIX ENC_CHROMAFMT );
if( !psz_tmp )
goto error;
else if( !strcmp( psz_tmp, "420" ) ) {
p_enc->fmt_in.i_codec = VLC_CODEC_I420;
p_enc->fmt_in.video.i_bits_per_pixel = 12;
p_sys->ctx.src_params.chroma = format420;
p_sys->i_buffer_in = p_enc->fmt_in.video.i_width * p_enc->fmt_in.video.i_height * 3 / 2;
}
else if( !strcmp( psz_tmp, "422" ) ) {
p_enc->fmt_in.i_codec = VLC_CODEC_I422;
p_enc->fmt_in.video.i_bits_per_pixel = 16;
p_sys->ctx.src_params.chroma = format422;
p_sys->i_buffer_in = p_enc->fmt_in.video.i_width * p_enc->fmt_in.video.i_height * 2;
}
else if( !strcmp( psz_tmp, "444" ) ) {
p_enc->fmt_in.i_codec = VLC_CODEC_I444;
p_enc->fmt_in.video.i_bits_per_pixel = 24;
p_sys->ctx.src_params.chroma = format444;
p_sys->i_buffer_in = p_enc->fmt_in.video.i_width * p_enc->fmt_in.video.i_height * 3;
}
else {
msg_Err( p_enc, "Invalid chroma format: %s", psz_tmp );
free( psz_tmp );
goto error;
}
free( psz_tmp );
p_sys->ctx.enc_params.qf = var_GetFloat( p_enc, ENC_CFG_PREFIX ENC_QUALITY_FACTOR );
/* use bitrate from sout-transcode-vb in kbps */
p_sys->ctx.enc_params.trate = p_enc->fmt_out.i_bitrate / 1000;
i_tmp = var_GetInteger( p_enc, ENC_CFG_PREFIX ENC_TARGETRATE );
if( i_tmp > -1 )
p_sys->ctx.enc_params.trate = i_tmp;
p_enc->fmt_out.i_bitrate = p_sys->ctx.enc_params.trate * 1000;
p_sys->ctx.enc_params.lossless = var_GetBool( p_enc, ENC_CFG_PREFIX ENC_LOSSLESS );
psz_tmp = var_GetString( p_enc, ENC_CFG_PREFIX ENC_PREFILTER );
if( !psz_tmp )
goto error;
else if( !strcmp( psz_tmp, "none" ) ) {
p_sys->ctx.enc_params.prefilter = NO_PF;
}
else if( !strcmp( psz_tmp, "cwm" ) ) {
p_sys->ctx.enc_params.prefilter = CWM;
}
else if( !strcmp( psz_tmp, "rectlp" ) ) {
p_sys->ctx.enc_params.prefilter = RECTLP;
}
else if( !strcmp( psz_tmp, "diaglp" ) ) {
p_sys->ctx.enc_params.prefilter = DIAGLP;
}
else {
msg_Err( p_enc, "Invalid prefilter: %s", psz_tmp );
free( psz_tmp );
goto error;
}
free( psz_tmp );
p_sys->ctx.enc_params.prefilter_strength =
var_GetInteger( p_enc, ENC_CFG_PREFIX ENC_PREFILTER_STRENGTH );
i_tmp = var_GetInteger( p_enc, ENC_CFG_PREFIX ENC_L1SEP );
if( i_tmp > -1 )
p_sys->ctx.enc_params.L1_sep = i_tmp;
i_tmp = var_GetInteger( p_enc, ENC_CFG_PREFIX ENC_L1NUM );
if( i_tmp > -1 )
p_sys->ctx.enc_params.num_L1 = i_tmp;
psz_tmp = var_GetString( p_enc, ENC_CFG_PREFIX ENC_CODINGMODE );
if( !psz_tmp )
goto error;
else if( !strcmp( psz_tmp, "auto" ) ) {
p_sys->b_auto_field_coding = true;
}
else if( !strcmp( psz_tmp, "progressive" ) ) {
p_sys->b_auto_field_coding = false;
p_sys->ctx.enc_params.picture_coding_mode = 0;
}
else if( !strcmp( psz_tmp, "field" ) ) {
p_sys->b_auto_field_coding = false;
p_sys->ctx.enc_params.picture_coding_mode = 1;
}
else {
msg_Err( p_enc, "Invalid codingmode: %s", psz_tmp );
free( psz_tmp );
goto error;
}
free( psz_tmp );
psz_tmp = var_GetString( p_enc, ENC_CFG_PREFIX ENC_MVPREC );
if( !psz_tmp )
goto error;
else if( !strcmp( psz_tmp, "1" ) ) {
p_sys->ctx.enc_params.mv_precision = MV_PRECISION_PIXEL;
}
else if( !strcmp( psz_tmp, "1/2" ) ) {
p_sys->ctx.enc_params.mv_precision = MV_PRECISION_HALF_PIXEL;
}
else if( !strcmp( psz_tmp, "1/4" ) ) {
p_sys->ctx.enc_params.mv_precision = MV_PRECISION_QUARTER_PIXEL;
}
else if( !strcmp( psz_tmp, "1/8" ) ) {
p_sys->ctx.enc_params.mv_precision = MV_PRECISION_EIGHTH_PIXEL;
}
else {
msg_Err( p_enc, "Invalid mv-prec: %s", psz_tmp );
free( psz_tmp );
goto error;
}
free( psz_tmp );
/*
* {x,y}b{len,sep} must be multiples of 4
*/
i_tmp = var_GetInteger( p_enc, ENC_CFG_PREFIX ENC_MCBLK_WIDTH );
if( i_tmp > -1 )
p_sys->ctx.enc_params.xbsep = i_tmp / 4 * 4;
i_tmp = var_GetInteger( p_enc, ENC_CFG_PREFIX ENC_MCBLK_HEIGHT );
if( i_tmp > -1 )
p_sys->ctx.enc_params.ybsep = i_tmp / 4 * 4;
i_tmp = var_GetInteger( p_enc, ENC_CFG_PREFIX ENC_MCBLK_OVERLAP );
if( i_tmp > -1 ) {
p_sys->ctx.enc_params.xblen = p_sys->ctx.enc_params.xbsep * (100 + i_tmp) / 400 * 4;
p_sys->ctx.enc_params.yblen = p_sys->ctx.enc_params.ybsep * (100 + i_tmp) / 400 * 4;
}
/*
* {x,y}blen >= {x,y}bsep
* {x,y}blen <= 2* {x,y}bsep
*/
i_tmp = var_GetInteger( p_enc, ENC_CFG_PREFIX ENC_MCBLK_XBLEN );
if( i_tmp > -1 ) {
int xblen = __MAX( i_tmp, p_sys->ctx.enc_params.xbsep );
xblen = __MIN( xblen, 2 * p_sys->ctx.enc_params.xbsep );
p_sys->ctx.enc_params.xblen = xblen;
}
i_tmp = var_GetInteger( p_enc, ENC_CFG_PREFIX ENC_MCBLK_YBLEN );
if( i_tmp > -1 ) {
int yblen = __MAX( i_tmp, p_sys->ctx.enc_params.ybsep );
yblen = __MIN( yblen, 2 * p_sys->ctx.enc_params.ybsep );
p_sys->ctx.enc_params.yblen = yblen;
}
psz_tmp = var_GetString( p_enc, ENC_CFG_PREFIX ENC_ME_SIMPLESEARCH );
if( !psz_tmp )
goto error;
if( *psz_tmp != '\0' ) {
/* of the form [0-9]+:[0-9]+ */
char *psz_start = psz_tmp;
char *psz_end = psz_tmp;
p_sys->ctx.enc_params.x_range_me = strtol(psz_start, &psz_end, 10);
if( *psz_end != ':' || psz_end == psz_start ) {
msg_Err( p_enc, "Invalid simple search range: %s", psz_tmp );
free( psz_tmp );
goto error;
}
psz_start = ++psz_end;
p_sys->ctx.enc_params.y_range_me = strtol(psz_start, &psz_end, 10);
if( *psz_end != '\0' || psz_end == psz_start ) {
msg_Err( p_enc, "Invalid simple search range: %s", psz_tmp );
free( psz_tmp );
goto error;
}
if( p_sys->ctx.enc_params.x_range_me < 0 ||
p_sys->ctx.enc_params.y_range_me < 0 )
{
msg_Err( p_enc, "Invalid negative simple search range: %s", psz_tmp );
free( psz_tmp );
goto error;
}
p_sys->ctx.enc_params.full_search = 1;
}
free( psz_tmp );
#if DIRAC_RESEARCH_VERSION_ATLEAST(1,0,1)
p_sys->ctx.enc_params.combined_me = var_GetBool( p_enc, ENC_CFG_PREFIX ENC_ME_COMBINED );
#endif
i_tmp = var_GetInteger( p_enc, ENC_CFG_PREFIX ENC_DWTINTRA );
if( i_tmp > -1 )
p_sys->ctx.enc_params.intra_wlt_filter = i_tmp;
i_tmp = var_GetInteger( p_enc, ENC_CFG_PREFIX ENC_DWTINTER );
if( i_tmp > -1 )
p_sys->ctx.enc_params.inter_wlt_filter = i_tmp;
i_tmp = var_GetInteger( p_enc, ENC_CFG_PREFIX ENC_DWTDEPTH );
if( i_tmp > -1 )
p_sys->ctx.enc_params.wlt_depth = i_tmp;
i_tmp = var_GetInteger( p_enc, ENC_CFG_PREFIX ENC_MULTIQUANT );
if( i_tmp > -1 )
p_sys->ctx.enc_params.multi_quants = i_tmp;
i_tmp = var_GetInteger( p_enc, ENC_CFG_PREFIX ENC_SPARTITION );
if( i_tmp > -1 )
p_sys->ctx.enc_params.spatial_partition = i_tmp;
p_sys->ctx.enc_params.using_ac = !var_GetBool( p_enc, ENC_CFG_PREFIX ENC_NOAC );
f_tmp = var_GetFloat( p_enc, ENC_CFG_PREFIX ENC_CPD );
if( f_tmp > -1 )
p_sys->ctx.enc_params.cpd = f_tmp;
/* Allocate the buffer for inputing frames into the encoder */
if( ( p_sys->p_buffer_in = malloc( p_sys->i_buffer_in ) ) == NULL )
{
CloseEncoder( p_this );
return VLC_ENOMEM;
}
/* Set up output buffer */
/* Unfortunately it isn't possible to determine if the buffer
* is too small (and then reallocate it) */
p_sys->i_buffer_out = 4096 + p_sys->i_buffer_in;
if( ( p_sys->p_buffer_out = malloc( p_sys->i_buffer_out ) ) == NULL )
{
CloseEncoder( p_this );
return VLC_ENOMEM;
}
return VLC_SUCCESS;
error:
CloseEncoder( p_this );
return VLC_EGENERIC;
}
/* Attempt to find dirac picture number in an encapsulation unit */
static int ReadDiracPictureNumber( uint32_t *p_picnum, block_t *p_block )
{
uint32_t u_pos = 4;
/* protect against falling off the edge */
while( u_pos + 13 < p_block->i_buffer )
{
/* find the picture startcode */
if( p_block->p_buffer[u_pos] & 0x08 )
{
*p_picnum = GetDWBE( p_block->p_buffer + u_pos + 9 );
return 1;
}
/* skip to the next dirac data unit */
uint32_t u_npo = GetDWBE( p_block->p_buffer + u_pos + 1 );
assert( u_npo <= UINT32_MAX - u_pos );
if( u_npo == 0 )
u_npo = 13;
u_pos += u_npo;
}
return 0;
}
/****************************************************************************
* Encode: the whole thing
****************************************************************************
* This function spits out encapsulation units.
****************************************************************************/
static block_t *Encode( encoder_t *p_enc, picture_t *p_pic )
{
encoder_sys_t *p_sys = p_enc->p_sys;
block_t *p_block, *p_output_chain = NULL;
int i_plane, i_line, i_width, i_src_stride;
uint8_t *p_dst;
if( !p_pic ) return NULL;
/* we only know if the sequence is interlaced when the first
* picture arrives, so final setup is done here */
/* XXX todo, detect change of interlace */
p_sys->ctx.src_params.topfieldfirst = p_pic->b_top_field_first;
p_sys->ctx.src_params.source_sampling = !p_pic->b_progressive;
if( p_sys->b_auto_field_coding )
p_sys->ctx.enc_params.picture_coding_mode = !p_pic->b_progressive;
if( !p_sys->p_dirac )
{
date_t date;
/* Initialise the encoder with the encoder context */
p_sys->p_dirac = dirac_encoder_init( &p_sys->ctx, 0 );
if( !p_sys->p_dirac )
{
msg_Err( p_enc, "Failed to initialize dirac encoder" );
return NULL;
}
date_Init( &date, p_enc->fmt_in.video.i_frame_rate, p_enc->fmt_in.video.i_frame_rate_base );
#if DIRAC_RESEARCH_VERSION_ATLEAST(1,0,2)
int i_delayinpics = dirac_encoder_pts_offset( p_sys->p_dirac );
i_delayinpics /= p_sys->ctx.enc_params.picture_coding_mode + 1;
date_Increment( &date, i_delayinpics );
#else
date_Increment( &date, 1 );
#endif
p_sys->i_pts_offset = date_Get( &date );
/* picture_coding_mode = 1 == FIELD_CODING, two pictures are produced
* for each frame input. Calculate time between fields for offsetting
* the second field later. */
if( 1 == p_sys->ctx.enc_params.picture_coding_mode )
{
date_Set( &date, 0 );
date_Increment( &date, 1 );
p_sys->i_field_time = date_Get( &date ) / 2;
}
}
/* Copy input picture into encoder input buffer (stride by stride) */
/* Would be lovely to just pass the picture in, but there is noway for the
* library to free it */
p_dst = p_sys->p_buffer_in;
for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
{
uint8_t *p_src = p_pic->p[i_plane].p_pixels;
i_width = p_pic->p[i_plane].i_visible_pitch;
i_src_stride = p_pic->p[i_plane].i_pitch;
for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines; i_line++ )
{
vlc_memcpy( p_dst, p_src, i_width );
p_dst += i_width;
p_src += i_src_stride;
}
}
/* Load one frame of data into encoder */
if( dirac_encoder_load( p_sys->p_dirac, p_sys->p_buffer_in,
p_sys->i_buffer_in ) < 0 )
{
msg_Dbg( p_enc, "dirac_encoder_load() error" );
return NULL;
}
/* store pts in a lookaside buffer, so that the same pts may
* be used for the picture in coded order */
StorePicturePTS( p_enc, p_sys->i_input_picnum, p_pic->date );
p_sys->i_input_picnum++;
/* store dts in a queue, so that they appear in order in
* coded order */
p_block = block_New( p_enc, 1 );
if( !p_block )
return NULL;
p_block->i_dts = p_pic->date - p_sys->i_pts_offset;
block_FifoPut( p_sys->p_dts_fifo, p_block );
p_block = NULL;
/* for field coding mode, insert an extra value into both the
* pts lookaside buffer and dts queue, offset to correspond
* to a one field delay. */
if( 1 == p_sys->ctx.enc_params.picture_coding_mode )
{
StorePicturePTS( p_enc, p_sys->i_input_picnum, p_pic->date + p_sys->i_field_time );
p_sys->i_input_picnum++;
p_block = block_New( p_enc, 1 );
if( !p_block )
return NULL;
p_block->i_dts = p_pic->date - p_sys->i_pts_offset + p_sys->i_field_time;
block_FifoPut( p_sys->p_dts_fifo, p_block );
p_block = NULL;
}
dirac_encoder_state_t state;
/* Retrieve encoded frames from encoder */
do
{
p_sys->p_dirac->enc_buf.buffer = p_sys->p_buffer_out;
p_sys->p_dirac->enc_buf.size = p_sys->i_buffer_out;
state = dirac_encoder_output( p_sys->p_dirac );
switch( state )
{
case ENC_STATE_AVAIL: {
uint32_t pic_num;
/* extract data from encoder temporary buffer. */
p_block = block_New( p_enc, p_sys->p_dirac->enc_buf.size );
if( !p_block )
return NULL;
memcpy( p_block->p_buffer, p_sys->p_dirac->enc_buf.buffer,
p_sys->p_dirac->enc_buf.size );
/* if some flags were set for a previous block, prevent
* them from getting lost */
if( p_sys->p_chain )
p_block->i_flags |= p_sys->p_chain->i_flags;
/* store all extracted blocks in a chain and gather up when an
* entire encapsulation unit is avaliable (ends with a picture) */
block_ChainAppend( &p_sys->p_chain, p_block );
/* Presence of a Sequence header indicates a seek point */
if( 0 == p_block->p_buffer[4] )
{
p_block->i_flags |= BLOCK_FLAG_TYPE_I;
if( !p_enc->fmt_out.p_extra ) {
const uint8_t eos[] = { 'B','B','C','D',0x10,0,0,0,13,0,0,0,0 };
uint32_t len = GetDWBE( p_block->p_buffer + 5 );
/* if it hasn't been done so far, stash a copy of the
* sequence header for muxers such as ogg */
/* The OggDirac spec advises that a Dirac EOS DataUnit
* is appended to the sequence header to allow guard
* against poor streaming servers */
/* XXX, should this be done using the packetizer ? */
p_enc->fmt_out.p_extra = malloc( len + sizeof(eos) );
if( !p_enc->fmt_out.p_extra )
return NULL;
memcpy( p_enc->fmt_out.p_extra, p_block->p_buffer, len);
memcpy( (uint8_t*)p_enc->fmt_out.p_extra + len, eos, sizeof(eos) );
SetDWBE( (uint8_t*)p_enc->fmt_out.p_extra + len + 10, len );
p_enc->fmt_out.i_extra = len + sizeof(eos);
}
}
if( ReadDiracPictureNumber( &pic_num, p_block ) )
{
/* Finding a picture terminates an ecapsulation unit, gather
* all data and output; use the next dts value queued up
* and find correct pts in the tlb */
p_block = block_FifoGet( p_sys->p_dts_fifo );
p_sys->p_chain->i_dts = p_block->i_dts;
p_sys->p_chain->i_pts = GetPicturePTS( p_enc, pic_num );
block_Release( p_block );
block_ChainAppend( &p_output_chain, block_ChainGather( p_sys->p_chain ) );
p_sys->p_chain = NULL;
} else {
p_block = NULL;
}
break;
}
case ENC_STATE_BUFFER:
break;
case ENC_STATE_INVALID:
default:
break;
}
} while( state == ENC_STATE_AVAIL );
return p_output_chain;
}
/*****************************************************************************
* CloseEncoder: dirac encoder destruction
*****************************************************************************/
static void CloseEncoder( vlc_object_t *p_this )
{
encoder_t *p_enc = (encoder_t *)p_this;
encoder_sys_t *p_sys = p_enc->p_sys;
/* Free the encoder resources */
if( p_sys->p_dirac )
dirac_encoder_close( p_sys->p_dirac );
free( p_sys->p_buffer_in );
free( p_sys->p_buffer_out );
if( p_sys->p_dts_fifo )
block_FifoRelease( p_sys->p_dts_fifo );
block_ChainRelease( p_sys->p_chain );
free( p_sys );
}