775 lines
25 KiB
C
775 lines
25 KiB
C
/*
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* Interface to xvidcore for mpeg4 encoding
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* Copyright (c) 2004 Adam Thayer <krevnik@comcast.net>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/**
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* @file xvidmpeg4.c
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* Interface to xvidcore for MPEG-4 compliant encoding.
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* @author Adam Thayer (krevnik@comcast.net)
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*/
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#include <xvid.h>
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#include <unistd.h>
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#include "common.h"
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#include "avcodec.h"
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/**
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* Buffer management macros.
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*/
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#define BUFFER_SIZE 1024
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#define BUFFER_REMAINING(x) (BUFFER_SIZE - strlen(x))
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#define BUFFER_CAT(x) (&((x)[strlen(x)]))
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/* For PPC Use */
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#if HAVE_ALTIVEC==1
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extern int has_altivec(void);
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#endif
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/**
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* Structure for the private XviD context.
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* This stores all the private context for the codec.
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*/
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typedef struct xvid_context {
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void *encoder_handle; /** Handle for XviD Encoder */
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int xsize, ysize; /** Frame size */
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int vop_flags; /** VOP flags for XviD Encoder */
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int vol_flags; /** VOL flags for XviD Encoder */
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int me_flags; /** Motion Estimation flags */
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int qscale; /** Do we use constant scale? */
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int quicktime_format; /** Are we in a QT-based format? */
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AVFrame encoded_picture; /** Encoded frame information */
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char *twopassbuffer; /** Character buffer for two-pass */
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char *old_twopassbuffer; /** Old character buffer (two-pass) */
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char *twopassfile; /** second pass temp file name */
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unsigned char *intra_matrix; /** P-Frame Quant Matrix */
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unsigned char *inter_matrix; /** I-Frame Quant Matrix */
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} xvid_context_t;
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/**
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* Structure for the private first-pass plugin.
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*/
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typedef struct xvid_ff_pass1 {
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int version; /** XviD version */
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xvid_context_t *context; /** Pointer to private context */
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} xvid_ff_pass1_t;
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/* Prototypes - See function implementation for details */
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int xvid_strip_vol_header(AVCodecContext *avctx, unsigned char *frame, unsigned int header_len, unsigned int frame_len);
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int xvid_ff_2pass(void *ref, int opt, void *p1, void *p2);
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void xvid_correct_framerate(AVCodecContext *avctx);
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/**
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* Creates the private context for the encoder.
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* All buffers are allocated, settings are loaded from the user,
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* and the encoder context created.
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*
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* @param avctx AVCodecContext pointer to context
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* @return Returns 0 on success, -1 on failure
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*/
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int ff_xvid_encode_init(AVCodecContext *avctx) {
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int xerr, i;
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int xvid_flags = avctx->flags;
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xvid_context_t *x = avctx->priv_data;
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uint16_t *intra, *inter;
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int fd;
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xvid_plugin_single_t single;
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xvid_ff_pass1_t rc2pass1;
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xvid_plugin_2pass2_t rc2pass2;
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xvid_gbl_init_t xvid_gbl_init;
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xvid_enc_create_t xvid_enc_create;
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xvid_enc_plugin_t plugins[7];
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/* Bring in VOP flags from ffmpeg command-line */
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x->vop_flags = XVID_VOP_HALFPEL; /* Bare minimum quality */
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if( xvid_flags & CODEC_FLAG_4MV )
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x->vop_flags |= XVID_VOP_INTER4V; /* Level 3 */
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if( xvid_flags & CODEC_FLAG_TRELLIS_QUANT)
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x->vop_flags |= XVID_VOP_TRELLISQUANT; /* Level 5 */
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if( xvid_flags & CODEC_FLAG_AC_PRED )
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x->vop_flags |= XVID_VOP_HQACPRED; /* Level 6 */
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if( xvid_flags & CODEC_FLAG_GRAY )
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x->vop_flags |= XVID_VOP_GREYSCALE;
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/* Decide which ME quality setting to use */
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x->me_flags = 0;
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switch( avctx->me_method ) {
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case ME_FULL: /* Quality 6 */
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x->me_flags |= XVID_ME_EXTSEARCH16
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| XVID_ME_EXTSEARCH8;
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case ME_EPZS: /* Quality 4 */
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x->me_flags |= XVID_ME_ADVANCEDDIAMOND8
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| XVID_ME_HALFPELREFINE8
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| XVID_ME_CHROMA_PVOP
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| XVID_ME_CHROMA_BVOP;
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case ME_LOG: /* Quality 2 */
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case ME_PHODS:
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case ME_X1:
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x->me_flags |= XVID_ME_ADVANCEDDIAMOND16
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| XVID_ME_HALFPELREFINE16;
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case ME_ZERO: /* Quality 0 */
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default:
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break;
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}
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/* Decide how we should decide blocks */
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switch( avctx->mb_decision ) {
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case 2:
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x->vop_flags |= XVID_VOP_MODEDECISION_RD;
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x->me_flags |= XVID_ME_HALFPELREFINE8_RD
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| XVID_ME_QUARTERPELREFINE8_RD
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| XVID_ME_EXTSEARCH_RD
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| XVID_ME_CHECKPREDICTION_RD;
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case 1:
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if( !(x->vop_flags & XVID_VOP_MODEDECISION_RD) )
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x->vop_flags |= XVID_VOP_FAST_MODEDECISION_RD;
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x->me_flags |= XVID_ME_HALFPELREFINE16_RD
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| XVID_ME_QUARTERPELREFINE16_RD;
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default:
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break;
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}
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/* Bring in VOL flags from ffmpeg command-line */
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x->vol_flags = 0;
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if( xvid_flags & CODEC_FLAG_GMC ) {
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x->vol_flags |= XVID_VOL_GMC;
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x->me_flags |= XVID_ME_GME_REFINE;
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}
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if( xvid_flags & CODEC_FLAG_QPEL ) {
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x->vol_flags |= XVID_VOL_QUARTERPEL;
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x->me_flags |= XVID_ME_QUARTERPELREFINE16;
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if( x->vop_flags & XVID_VOP_INTER4V )
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x->me_flags |= XVID_ME_QUARTERPELREFINE8;
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}
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memset(&xvid_gbl_init, 0, sizeof(xvid_gbl_init));
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xvid_gbl_init.version = XVID_VERSION;
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xvid_gbl_init.debug = 0;
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#ifdef ARCH_POWERPC
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/* XviD's PPC support is borked, use libavcodec to detect */
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#if HAVE_ALTIVEC==1
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if( has_altivec() ) {
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xvid_gbl_init.cpu_flags = XVID_CPU_FORCE | XVID_CPU_ALTIVEC;
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} else
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#endif
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xvid_gbl_init.cpu_flags = XVID_CPU_FORCE;
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#else
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/* XviD can detect on x86 */
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xvid_gbl_init.cpu_flags = 0;
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#endif
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/* Initialize */
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xvid_global(NULL, XVID_GBL_INIT, &xvid_gbl_init, NULL);
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/* Create the encoder reference */
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memset(&xvid_enc_create, 0, sizeof(xvid_enc_create));
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xvid_enc_create.version = XVID_VERSION;
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/* Store the desired frame size */
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xvid_enc_create.width = x->xsize = avctx->width;
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xvid_enc_create.height = x->ysize = avctx->height;
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/* XviD can determine the proper profile to use */
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/* xvid_enc_create.profile = XVID_PROFILE_S_L3; */
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/* We don't use zones or threads */
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xvid_enc_create.zones = NULL;
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xvid_enc_create.num_zones = 0;
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xvid_enc_create.num_threads = 0;
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xvid_enc_create.plugins = plugins;
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xvid_enc_create.num_plugins = 0;
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/* Initialize Buffers */
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x->twopassbuffer = NULL;
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x->old_twopassbuffer = NULL;
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x->twopassfile = NULL;
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if( xvid_flags & CODEC_FLAG_PASS1 ) {
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memset(&rc2pass1, 0, sizeof(xvid_ff_pass1_t));
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rc2pass1.version = XVID_VERSION;
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rc2pass1.context = x;
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x->twopassbuffer = av_malloc(BUFFER_SIZE);
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x->old_twopassbuffer = av_malloc(BUFFER_SIZE);
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if( x->twopassbuffer == NULL || x->old_twopassbuffer == NULL ) {
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av_log(avctx, AV_LOG_ERROR,
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"XviD: Cannot allocate 2-pass log buffers\n");
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return -1;
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}
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x->twopassbuffer[0] = x->old_twopassbuffer[0] = 0;
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plugins[xvid_enc_create.num_plugins].func = xvid_ff_2pass;
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plugins[xvid_enc_create.num_plugins].param = &rc2pass1;
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xvid_enc_create.num_plugins++;
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} else if( xvid_flags & CODEC_FLAG_PASS2 ) {
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memset(&rc2pass2, 0, sizeof(xvid_plugin_2pass2_t));
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rc2pass2.version = XVID_VERSION;
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rc2pass2.bitrate = avctx->bit_rate;
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x->twopassfile = av_malloc(BUFFER_SIZE);
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if( x->twopassfile == NULL ) {
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av_log(avctx, AV_LOG_ERROR,
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"XviD: Cannot allocate 2-pass buffer\n");
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return -1;
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}
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strcpy(x->twopassfile, "/tmp/xvidff.XXXXXX");
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fd = mkstemp(x->twopassfile);
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if(fd < 0){
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strcpy(x->twopassfile, "./xvidff.XXXXXX");
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fd = mkstemp(x->twopassfile);
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}
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if( fd == -1 ) {
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av_log(avctx, AV_LOG_ERROR,
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"XviD: Cannot write 2-pass pipe\n");
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return -1;
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}
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if( avctx->stats_in == NULL ) {
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av_log(avctx, AV_LOG_ERROR,
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"XviD: No 2-pass information loaded for second pass\n");
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return -1;
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}
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if( strlen(avctx->stats_in) >
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write(fd, avctx->stats_in, strlen(avctx->stats_in)) ) {
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close(fd);
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av_log(avctx, AV_LOG_ERROR,
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"XviD: Cannot write to 2-pass pipe\n");
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return -1;
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}
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close(fd);
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rc2pass2.filename = x->twopassfile;
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plugins[xvid_enc_create.num_plugins].func = xvid_plugin_2pass2;
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plugins[xvid_enc_create.num_plugins].param = &rc2pass2;
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xvid_enc_create.num_plugins++;
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} else if( !(xvid_flags & CODEC_FLAG_QSCALE) ) {
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/* Single Pass Bitrate Control! */
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memset(&single, 0, sizeof(xvid_plugin_single_t));
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single.version = XVID_VERSION;
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single.bitrate = avctx->bit_rate;
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plugins[xvid_enc_create.num_plugins].func = xvid_plugin_single;
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plugins[xvid_enc_create.num_plugins].param = &single;
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xvid_enc_create.num_plugins++;
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}
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/* Luminance Masking */
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if( 0.0 != avctx->lumi_masking ) {
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plugins[xvid_enc_create.num_plugins].func = xvid_plugin_lumimasking;
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plugins[xvid_enc_create.num_plugins].param = NULL;
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xvid_enc_create.num_plugins++;
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}
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/* Frame Rate and Key Frames */
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xvid_correct_framerate(avctx);
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xvid_enc_create.fincr = avctx->frame_rate_base;
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xvid_enc_create.fbase = avctx->frame_rate;
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if( avctx->gop_size > 0 )
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xvid_enc_create.max_key_interval = avctx->gop_size;
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else
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xvid_enc_create.max_key_interval = 240; /* XviD's best default */
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/* Quants */
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if( xvid_flags & CODEC_FLAG_QSCALE ) x->qscale = 1;
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else x->qscale = 0;
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xvid_enc_create.min_quant[0] = avctx->qmin;
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xvid_enc_create.min_quant[1] = avctx->qmin;
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xvid_enc_create.min_quant[2] = avctx->qmin;
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xvid_enc_create.max_quant[0] = avctx->qmax;
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xvid_enc_create.max_quant[1] = avctx->qmax;
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xvid_enc_create.max_quant[2] = avctx->qmax;
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/* Quant Matrices */
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x->intra_matrix = x->inter_matrix = NULL;
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if( avctx->mpeg_quant )
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x->vol_flags |= XVID_VOL_MPEGQUANT;
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if( (avctx->intra_matrix || avctx->inter_matrix) ) {
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x->vol_flags |= XVID_VOL_MPEGQUANT;
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if( avctx->intra_matrix ) {
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intra = avctx->intra_matrix;
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x->intra_matrix = av_malloc(sizeof(unsigned char) * 64);
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} else
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intra = NULL;
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if( avctx->inter_matrix ) {
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inter = avctx->inter_matrix;
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x->inter_matrix = av_malloc(sizeof(unsigned char) * 64);
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} else
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inter = NULL;
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for( i = 0; i < 64; i++ ) {
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if( intra )
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x->intra_matrix[i] = (unsigned char)intra[i];
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if( inter )
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x->inter_matrix[i] = (unsigned char)inter[i];
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}
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}
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/* Misc Settings */
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xvid_enc_create.frame_drop_ratio = 0;
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xvid_enc_create.global = 0;
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if( xvid_flags & CODEC_FLAG_CLOSED_GOP )
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xvid_enc_create.global |= XVID_GLOBAL_CLOSED_GOP;
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/* Determines which codec mode we are operating in */
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avctx->extradata = NULL;
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avctx->extradata_size = 0;
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if( xvid_flags & CODEC_FLAG_GLOBAL_HEADER ) {
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/* In this case, we are claiming to be MPEG4 */
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x->quicktime_format = 1;
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avctx->codec_id = CODEC_ID_MPEG4;
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} else {
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/* We are claiming to be XviD */
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x->quicktime_format = 0;
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avctx->codec_tag = ff_get_fourcc("xvid");
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}
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/* Bframes */
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xvid_enc_create.max_bframes = avctx->max_b_frames;
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xvid_enc_create.bquant_offset = avctx->b_quant_offset;
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xvid_enc_create.bquant_ratio = 100 * avctx->b_quant_factor;
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if( avctx->max_b_frames > 0 && !x->quicktime_format ) xvid_enc_create.global |= XVID_GLOBAL_PACKED;
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/* Create encoder context */
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xerr = xvid_encore(NULL, XVID_ENC_CREATE, &xvid_enc_create, NULL);
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if( xerr ) {
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av_log(avctx, AV_LOG_ERROR, "XviD: Could not create encoder reference\n");
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return -1;
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}
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x->encoder_handle = xvid_enc_create.handle;
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avctx->coded_frame = &x->encoded_picture;
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return 0;
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}
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/**
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* Encodes a single frame.
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*
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* @param avctx AVCodecContext pointer to context
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* @param frame Pointer to encoded frame buffer
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* @param buf_size Size of encoded frame buffer
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* @param data Pointer to AVFrame of unencoded frame
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* @return Returns 0 on success, -1 on failure
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*/
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int ff_xvid_encode_frame(AVCodecContext *avctx,
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unsigned char *frame, int buf_size, void *data) {
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int xerr, i;
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char *tmp;
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xvid_context_t *x = avctx->priv_data;
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AVFrame *picture = data;
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AVFrame *p = &(x->encoded_picture);
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xvid_enc_frame_t xvid_enc_frame;
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xvid_enc_stats_t xvid_enc_stats;
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/* Start setting up the frame */
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memset(&xvid_enc_frame, 0, sizeof(xvid_enc_frame));
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xvid_enc_frame.version = XVID_VERSION;
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memset(&xvid_enc_stats, 0, sizeof(xvid_enc_stats));
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xvid_enc_stats.version = XVID_VERSION;
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*p = *picture;
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/* Let XviD know where to put the frame. */
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xvid_enc_frame.bitstream = frame;
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xvid_enc_frame.length = buf_size;
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/* Initialize input image fields */
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if( avctx->pix_fmt != PIX_FMT_YUV420P ) {
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av_log(avctx, AV_LOG_ERROR, "XviD: Color spaces other than 420p not supported\n");
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return -1;
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}
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xvid_enc_frame.input.csp = XVID_CSP_PLANAR; /* YUV420P */
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for( i = 0; i < 4; i++ ) {
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xvid_enc_frame.input.plane[i] = picture->data[i];
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xvid_enc_frame.input.stride[i] = picture->linesize[i];
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}
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/* Encoder Flags */
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xvid_enc_frame.vop_flags = x->vop_flags;
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xvid_enc_frame.vol_flags = x->vol_flags;
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xvid_enc_frame.motion = x->me_flags;
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xvid_enc_frame.type = XVID_TYPE_AUTO;
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/* Quant Setting */
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if( x->qscale ) xvid_enc_frame.quant = picture->quality / FF_QP2LAMBDA;
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else xvid_enc_frame.quant = 0;
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/* Matrices */
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xvid_enc_frame.quant_intra_matrix = x->intra_matrix;
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xvid_enc_frame.quant_inter_matrix = x->inter_matrix;
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/* Encode */
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xerr = xvid_encore(x->encoder_handle, XVID_ENC_ENCODE,
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&xvid_enc_frame, &xvid_enc_stats);
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/* Two-pass log buffer swapping */
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avctx->stats_out = NULL;
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if( x->twopassbuffer ) {
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tmp = x->old_twopassbuffer;
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x->old_twopassbuffer = x->twopassbuffer;
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x->twopassbuffer = tmp;
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x->twopassbuffer[0] = 0;
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if( x->old_twopassbuffer[0] != 0 ) {
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avctx->stats_out = x->old_twopassbuffer;
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}
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}
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if( 0 <= xerr ) {
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p->quality = xvid_enc_stats.quant * FF_QP2LAMBDA;
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if( xvid_enc_stats.type == XVID_TYPE_PVOP )
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p->pict_type = FF_P_TYPE;
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else if( xvid_enc_stats.type == XVID_TYPE_BVOP )
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p->pict_type = FF_B_TYPE;
|
|
else if( xvid_enc_stats.type == XVID_TYPE_SVOP )
|
|
p->pict_type = FF_S_TYPE;
|
|
else
|
|
p->pict_type = FF_I_TYPE;
|
|
if( xvid_enc_frame.out_flags & XVID_KEYFRAME ) {
|
|
p->key_frame = 1;
|
|
if( x->quicktime_format )
|
|
return xvid_strip_vol_header(avctx, frame,
|
|
xvid_enc_stats.hlength, xerr);
|
|
} else
|
|
p->key_frame = 0;
|
|
|
|
return xerr;
|
|
} else {
|
|
av_log(avctx, AV_LOG_ERROR, "XviD: Encoding Error Occurred: %i\n", xerr);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Destroys the private context for the encoder.
|
|
* All buffers are freed, and the XviD encoder context is destroyed.
|
|
*
|
|
* @param avctx AVCodecContext pointer to context
|
|
* @return Returns 0, success guaranteed
|
|
*/
|
|
int ff_xvid_encode_close(AVCodecContext *avctx) {
|
|
xvid_context_t *x = avctx->priv_data;
|
|
|
|
xvid_encore(x->encoder_handle, XVID_ENC_DESTROY, NULL, NULL);
|
|
|
|
if( avctx->extradata != NULL )
|
|
av_free(avctx->extradata);
|
|
if( x->twopassbuffer != NULL ) {
|
|
av_free(x->twopassbuffer);
|
|
av_free(x->old_twopassbuffer);
|
|
}
|
|
if( x->twopassfile != NULL )
|
|
av_free(x->twopassfile);
|
|
if( x->intra_matrix != NULL )
|
|
av_free(x->intra_matrix);
|
|
if( x->inter_matrix != NULL )
|
|
av_free(x->inter_matrix);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Routine to create a global VO/VOL header for MP4 container.
|
|
* What we do here is extract the header from the XviD bitstream
|
|
* as it is encoded. We also strip the repeated headers from the
|
|
* bitstream when a global header is requested for MPEG-4 ISO
|
|
* compliance.
|
|
*
|
|
* @param avctx AVCodecContext pointer to context
|
|
* @param frame Pointer to encoded frame data
|
|
* @param header_len Length of header to search
|
|
* @param frame_len Length of encoded frame data
|
|
* @return Returns new length of frame data
|
|
*/
|
|
int xvid_strip_vol_header(AVCodecContext *avctx,
|
|
unsigned char *frame,
|
|
unsigned int header_len,
|
|
unsigned int frame_len) {
|
|
int vo_len = 0, i;
|
|
|
|
for( i = 0; i < header_len - 3; i++ ) {
|
|
if( frame[i] == 0x00 &&
|
|
frame[i+1] == 0x00 &&
|
|
frame[i+2] == 0x01 &&
|
|
frame[i+3] == 0xB6 ) {
|
|
vo_len = i;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if( vo_len > 0 ) {
|
|
/* We need to store the header, so extract it */
|
|
if( avctx->extradata == NULL ) {
|
|
avctx->extradata = av_malloc(vo_len);
|
|
memcpy(avctx->extradata, frame, vo_len);
|
|
avctx->extradata_size = vo_len;
|
|
}
|
|
/* Less dangerous now, memmove properly copies the two
|
|
chunks of overlapping data */
|
|
memmove(frame, &(frame[vo_len]), frame_len - vo_len);
|
|
return frame_len - vo_len;
|
|
} else
|
|
return frame_len;
|
|
}
|
|
|
|
/**
|
|
* Routine to correct a possibly erroneous framerate being fed to us.
|
|
* XviD currently chokes on framerates where the ticks per frame is
|
|
* extremely large. This function works to correct problems in this area
|
|
* by estimating a new framerate and taking the simpler fraction of
|
|
* the two presented.
|
|
*
|
|
* @param avctx Context that contains the framerate to correct.
|
|
*/
|
|
void xvid_correct_framerate(AVCodecContext *avctx) {
|
|
int frate, fbase;
|
|
int est_frate, est_fbase;
|
|
int gcd;
|
|
float est_fps, fps;
|
|
|
|
frate = avctx->frame_rate;
|
|
fbase = avctx->frame_rate_base;
|
|
|
|
gcd = ff_gcd(frate, fbase);
|
|
if( gcd > 1 ) {
|
|
frate /= gcd;
|
|
fbase /= gcd;
|
|
}
|
|
|
|
if( frate <= 65000 && fbase <= 65000 ) {
|
|
avctx->frame_rate = frate;
|
|
avctx->frame_rate_base = fbase;
|
|
return;
|
|
}
|
|
|
|
fps = (float)frate / (float)fbase;
|
|
est_fps = roundf(fps * 1000.0) / 1000.0;
|
|
|
|
est_frate = (int)est_fps;
|
|
if( est_fps > (int)est_fps ) {
|
|
est_frate = (est_frate + 1) * 1000;
|
|
est_fbase = (int)roundf((float)est_frate / est_fps);
|
|
} else
|
|
est_fbase = 1;
|
|
|
|
gcd = ff_gcd(est_frate, est_fbase);
|
|
if( gcd > 1 ) {
|
|
est_frate /= gcd;
|
|
est_fbase /= gcd;
|
|
}
|
|
|
|
if( fbase > est_fbase ) {
|
|
avctx->frame_rate = est_frate;
|
|
avctx->frame_rate_base = est_fbase;
|
|
av_log(avctx, AV_LOG_DEBUG,
|
|
"XviD: framerate re-estimated: %.2f, %.3f%% correction\n",
|
|
est_fps, (((est_fps - fps)/fps) * 100.0));
|
|
} else {
|
|
avctx->frame_rate = frate;
|
|
avctx->frame_rate_base = fbase;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* XviD 2-Pass Kludge Section
|
|
*
|
|
* XviD's default 2-pass doesn't allow us to create data as we need to, so
|
|
* this section spends time replacing the first pass plugin so we can write
|
|
* statistic information as libavcodec requests in. We have another kludge
|
|
* that allows us to pass data to the second pass in XviD without a custom
|
|
* rate-control plugin.
|
|
*/
|
|
|
|
/**
|
|
* Initializes the two-pass plugin and context.
|
|
*
|
|
* @param param Input construction parameter structure
|
|
* @param handle Private context handle
|
|
* @return Returns XVID_ERR_xxxx on failure, or 0 on success.
|
|
*/
|
|
static int xvid_ff_2pass_create(xvid_plg_create_t * param,
|
|
void ** handle) {
|
|
xvid_ff_pass1_t *x = (xvid_ff_pass1_t *)param->param;
|
|
char *log = x->context->twopassbuffer;
|
|
|
|
/* Do a quick bounds check */
|
|
if( log == NULL )
|
|
return XVID_ERR_FAIL;
|
|
|
|
/* We use snprintf() */
|
|
/* This is because we can safely prevent a buffer overflow */
|
|
log[0] = 0;
|
|
snprintf(log, BUFFER_REMAINING(log),
|
|
"# ffmpeg 2-pass log file, using xvid codec\n");
|
|
snprintf(BUFFER_CAT(log), BUFFER_REMAINING(log),
|
|
"# Do not modify. libxvidcore version: %d.%d.%d\n\n",
|
|
XVID_VERSION_MAJOR(XVID_VERSION),
|
|
XVID_VERSION_MINOR(XVID_VERSION),
|
|
XVID_VERSION_PATCH(XVID_VERSION));
|
|
|
|
*handle = x->context;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Destroys the two-pass plugin context.
|
|
*
|
|
* @param ref Context pointer for the plugin
|
|
* @param param Destrooy context
|
|
* @return Returns 0, success guaranteed
|
|
*/
|
|
static int xvid_ff_2pass_destroy(xvid_context_t *ref,
|
|
xvid_plg_destroy_t *param) {
|
|
/* Currently cannot think of anything to do on destruction */
|
|
/* Still, the framework should be here for reference/use */
|
|
if( ref->twopassbuffer != NULL )
|
|
ref->twopassbuffer[0] = 0;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Enables fast encode mode during the first pass.
|
|
*
|
|
* @param ref Context pointer for the plugin
|
|
* @param param Frame data
|
|
* @return Returns 0, success guaranteed
|
|
*/
|
|
static int xvid_ff_2pass_before(xvid_context_t *ref,
|
|
xvid_plg_data_t *param) {
|
|
int motion_remove;
|
|
int motion_replacements;
|
|
int vop_remove;
|
|
|
|
/* Nothing to do here, result is changed too much */
|
|
if( param->zone && param->zone->mode == XVID_ZONE_QUANT )
|
|
return 0;
|
|
|
|
/* We can implement a 'turbo' first pass mode here */
|
|
param->quant = 2;
|
|
|
|
/* Init values */
|
|
motion_remove = ~XVID_ME_CHROMA_PVOP &
|
|
~XVID_ME_CHROMA_BVOP &
|
|
~XVID_ME_EXTSEARCH16 &
|
|
~XVID_ME_ADVANCEDDIAMOND16;
|
|
motion_replacements = XVID_ME_FAST_MODEINTERPOLATE |
|
|
XVID_ME_SKIP_DELTASEARCH |
|
|
XVID_ME_FASTREFINE16 |
|
|
XVID_ME_BFRAME_EARLYSTOP;
|
|
vop_remove = ~XVID_VOP_MODEDECISION_RD &
|
|
~XVID_VOP_FAST_MODEDECISION_RD &
|
|
~XVID_VOP_TRELLISQUANT &
|
|
~XVID_VOP_INTER4V &
|
|
~XVID_VOP_HQACPRED;
|
|
|
|
param->vol_flags &= ~XVID_VOL_GMC;
|
|
param->vop_flags &= vop_remove;
|
|
param->motion_flags &= motion_remove;
|
|
param->motion_flags |= motion_replacements;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Captures statistic data and writes it during first pass.
|
|
*
|
|
* @param ref Context pointer for the plugin
|
|
* @param param Statistic data
|
|
* @return Returns XVID_ERR_xxxx on failure, or 0 on success
|
|
*/
|
|
static int xvid_ff_2pass_after(xvid_context_t *ref,
|
|
xvid_plg_data_t *param) {
|
|
char *log = ref->twopassbuffer;
|
|
char *frame_types = " ipbs";
|
|
char frame_type;
|
|
|
|
/* Quick bounds check */
|
|
if( log == NULL )
|
|
return XVID_ERR_FAIL;
|
|
|
|
/* Convert the type given to us into a character */
|
|
if( param->type < 5 && param->type > 0 ) {
|
|
frame_type = frame_types[param->type];
|
|
} else {
|
|
return XVID_ERR_FAIL;
|
|
}
|
|
|
|
snprintf(BUFFER_CAT(log), BUFFER_REMAINING(log),
|
|
"%c %d %d %d %d %d %d\n",
|
|
frame_type, param->stats.quant, param->stats.kblks, param->stats.mblks,
|
|
param->stats.ublks, param->stats.length, param->stats.hlength);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Dispatch function for our custom plugin.
|
|
* This handles the dispatch for the XviD plugin. It passes data
|
|
* on to other functions for actual processing.
|
|
*
|
|
* @param ref Context pointer for the plugin
|
|
* @param cmd The task given for us to complete
|
|
* @param p1 First parameter (varies)
|
|
* @param p2 Second parameter (varies)
|
|
* @return Returns XVID_ERR_xxxx on failure, or 0 on success
|
|
*/
|
|
int xvid_ff_2pass(void *ref, int cmd, void *p1, void *p2) {
|
|
switch( cmd ) {
|
|
case XVID_PLG_INFO:
|
|
case XVID_PLG_FRAME:
|
|
return 0;
|
|
|
|
case XVID_PLG_BEFORE:
|
|
return xvid_ff_2pass_before(ref, p1);
|
|
|
|
case XVID_PLG_CREATE:
|
|
return xvid_ff_2pass_create(p1, p2);
|
|
|
|
case XVID_PLG_AFTER:
|
|
return xvid_ff_2pass_after(ref, p1);
|
|
|
|
case XVID_PLG_DESTROY:
|
|
return xvid_ff_2pass_destroy(ref, p1);
|
|
|
|
default:
|
|
return XVID_ERR_FAIL;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* XviD codec definition for libavcodec.
|
|
*/
|
|
AVCodec xvid_encoder = {
|
|
"xvid",
|
|
CODEC_TYPE_VIDEO,
|
|
CODEC_ID_XVID,
|
|
sizeof(xvid_context_t),
|
|
ff_xvid_encode_init,
|
|
ff_xvid_encode_frame,
|
|
ff_xvid_encode_close
|
|
};
|