codec.c
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上传日期:2021-12-09
资源大小:5084k
文件大小:14k
源码类别:
Audio
开发平台:
Visual C++
- /*****************************************************************************
- * codec.c: vfw x264 encoder
- *****************************************************************************
- * Copyright (C) 2003 Laurent Aimar
- * $Id: codec.c,v 1.1 2004/06/03 19:27:09 fenrir Exp $
- *
- * Authors: Justin Clay
- * Laurent Aimar <fenrir@via.ecp.fr>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
- *****************************************************************************/
- #include "x264vfw.h"
- #include <stdio.h> /* debug only */
- #include <io.h>
- #define X264_MAX(a,b) ( (a)>(b) ? (a) : (b) )
- #define X264_MIN(a,b) ( (a)<(b) ? (a) : (b) )
- /* get_csp:
- * return a valid x264 CSP or X264_CSP_NULL if unsuported */
- static int get_csp( BITMAPINFOHEADER *hdr )
- {
- switch( hdr->biCompression )
- {
- case FOURCC_I420:
- case FOURCC_IYUV:
- return X264_CSP_I420;
- case FOURCC_YV12:
- return X264_CSP_YV12;
- case FOURCC_YUYV:
- case FOURCC_YUY2:
- return X264_CSP_YUYV;
- case BI_RGB:
- {
- int i_vflip = hdr->biHeight < 0 ? 0 : X264_CSP_VFLIP;
- if( hdr->biBitCount == 24 )
- return X264_CSP_BGR | i_vflip;
- if( hdr->biBitCount == 32 )
- return X264_CSP_BGRA | i_vflip;
- else
- return X264_CSP_NONE;
- }
- default:
- return X264_CSP_NONE;
- }
- }
- /* Test that we can do the compression */
- LRESULT compress_query( CODEC *codec, BITMAPINFO *lpbiInput, BITMAPINFO *lpbiOutput )
- {
- BITMAPINFOHEADER *inhdr = &lpbiInput->bmiHeader;
- BITMAPINFOHEADER *outhdr = &lpbiOutput->bmiHeader;
- CONFIG *config = &codec->config;
- if( get_csp( inhdr ) == X264_CSP_NONE )
- return ICERR_BADFORMAT;
- if( lpbiOutput == NULL )
- return ICERR_OK;
- if( inhdr->biWidth != outhdr->biWidth ||
- inhdr->biHeight != outhdr->biHeight )
- return ICERR_BADFORMAT;
- /* We need x16 width/height */
- if( inhdr->biWidth % 16 != 0 || inhdr->biHeight % 16 != 0 )
- return ICERR_BADFORMAT;
- if( inhdr->biCompression != mmioFOURCC( config->fcc[0], config->fcc[1],
- config->fcc[2], config->fcc[3] ) )
- return ICERR_BADFORMAT;
- return ICERR_OK;
- }
- /* */
- LRESULT compress_get_format( CODEC *codec, BITMAPINFO *lpbiInput, BITMAPINFO *lpbiOutput )
- {
- BITMAPINFOHEADER *inhdr = &lpbiInput->bmiHeader;
- BITMAPINFOHEADER *outhdr = &lpbiOutput->bmiHeader;
- CONFIG *config = &codec->config;
- if( get_csp( inhdr ) == X264_CSP_NONE )
- return ICERR_BADFORMAT;
- if( lpbiOutput == NULL )
- return sizeof(BITMAPINFOHEADER);
- memcpy( outhdr, inhdr, sizeof( BITMAPINFOHEADER ) );
- outhdr->biSize = sizeof( BITMAPINFOHEADER );
- outhdr->biSizeImage = compress_get_size( codec, lpbiInput, lpbiOutput );
- outhdr->biXPelsPerMeter = 0;
- outhdr->biYPelsPerMeter = 0;
- outhdr->biClrUsed = 0;
- outhdr->biClrImportant = 0;
- outhdr->biCompression = mmioFOURCC( config->fcc[0], config->fcc[1],
- config->fcc[2], config->fcc[3] );
- return ICERR_OK;
- }
- /* */
- LRESULT compress_get_size( CODEC *codec, BITMAPINFO *lpbiInput, BITMAPINFO *lpbiOutput )
- {
- return 2 * lpbiOutput->bmiHeader.biWidth * lpbiOutput->bmiHeader.biHeight * 3;
- }
- /* */
- LRESULT compress_frames_info(CODEC * codec, ICCOMPRESSFRAMES * icf )
- {
- codec->fincr = icf->dwScale;
- codec->fbase = icf->dwRate;
- codec->config.i_frame_total = icf->lFrameCount;
- return ICERR_OK;
- }
- static void x264_log_vfw( void *p_private, int i_level, const char *psz_fmt, va_list arg )
- {
- char error_msg[1024];
- int idx;
- HWND *hCons = p_private;
- vsprintf( error_msg, psz_fmt, arg );
- /* strip final linefeeds (required) */
- idx=strlen( error_msg ) - 1;
- while( idx >= 0 && error_msg[idx] == 'n' )
- error_msg[idx--] = 0;
- if(!( *hCons ) ) {
- *hCons = CreateDialog( g_hInst, MAKEINTRESOURCE( IDD_ERRCONSOLE ), NULL,
- callback_err_console );
- //ShowWindow( *hCons, SW_SHOW );
- }
- idx = SendDlgItemMessage( *hCons, IDC_CONSOLE, LB_ADDSTRING, 0, ( LPARAM )error_msg );
- /* make sure that the last item added is visible (autoscroll) */
- if( idx >= 0 )
- SendDlgItemMessage( *hCons, IDC_CONSOLE, LB_SETTOPINDEX, ( WPARAM )idx, 0 );
- }
- static void statsfilename_renumber( char *dest, char *src, int i_pass )
- {
- char *last_dot = strrchr( src, '.' );
- char *last_slash = X264_MAX( strrchr( src, '/' ), strrchr( src, '\' ) );
- char pass_str[5];
- sprintf( pass_str, "-%i", i_pass );
- strcpy( dest, src );
- if( last_slash < last_dot ) {
- dest[ last_dot - src ] = 0;
- strcat( dest, pass_str );
- strcat( dest, last_dot );
- }
- else
- {
- strcat( dest, pass_str );
- }
- }
- /* */
- LRESULT compress_begin(CODEC * codec, BITMAPINFO * lpbiInput, BITMAPINFO * lpbiOutput )
- {
- CONFIG *config = &codec->config;
- x264_param_t param;
- int pass_number;
- /* Destroy previous handle */
- if( codec->h != NULL )
- {
- x264_encoder_close( codec->h );
- codec->h = NULL;
- }
- /* Get default param */
- x264_param_default( ¶m );
- param.rc.psz_stat_out = malloc (MAX_PATH);
- param.rc.psz_stat_in = malloc (MAX_PATH);
- param.i_threads = config->i_threads;
- param.analyse.i_noise_reduction = config->i_noise_reduction;
- param.i_log_level = config->i_log_level - 1;
- param.pf_log = x264_log_vfw;
- param.p_log_private = malloc( sizeof( HWND ) );
- *( ( HWND * )param.p_log_private ) = NULL; /* error console window handle */
- codec->hCons = ( HWND * )param.p_log_private;
- param.analyse.b_psnr = 0;
- /* Set params: TODO to complete */
- param.i_width = lpbiInput->bmiHeader.biWidth;
- param.i_height= lpbiInput->bmiHeader.biHeight;
- param.i_fps_num = codec->fbase;
- param.i_fps_den = codec->fincr;
- param.i_frame_total = config->i_frame_total;
- param.i_frame_reference = config->i_refmax;
- param.i_keyint_min = config->i_keyint_min;
- param.i_keyint_max = config->i_keyint_max;
- param.i_scenecut_threshold = config->i_scenecut_threshold;
- param.rc.i_qp_min = config->i_qp_min;
- param.rc.i_qp_max = config->i_qp_max;
- param.rc.i_qp_step = config->i_qp_step;
- param.b_deblocking_filter = config->b_filter;
- param.b_cabac = config->b_cabac;
- if( config->b_cabac && config->i_trellis )
- param.analyse.i_trellis = 1;
- param.analyse.b_chroma_me = config->b_chroma_me;
- param.rc.f_ip_factor = 1 + (float)config->i_key_boost / 100;
- param.rc.f_pb_factor = 1 + (float)config->i_b_red / 100;
- param.rc.f_qcompress = (float)config->i_curve_comp / 100;
- param.vui.i_sar_width = config->i_sar_width;
- param.vui.i_sar_height = config->i_sar_height;
- param.i_bframe = config->i_bframe;
- if( config->i_bframe > 1 && config->b_b_wpred)
- param.analyse.b_weighted_bipred = 1;
- if( config->i_bframe > 1 && config->b_b_refs)
- param.b_bframe_pyramid = 1;
- param.b_bframe_adaptive = config->b_bframe_adaptive;
- param.analyse.b_bidir_me = config->b_bidir_me;
- param.i_bframe_bias = config->i_bframe_bias;
- param.analyse.i_subpel_refine = config->i_subpel_refine + 1; /* 0..5 -> 1..6 */
- if (param.analyse.i_subpel_refine == 7)
- {
- param.analyse.i_subpel_refine = 6;
- param.analyse.b_bframe_rdo = 1;
- }
- param.analyse.i_me_method = config->i_me_method;
- param.analyse.i_me_range = config->i_me_range;
- /* bframe prediction - gui goes alphabetically, so 1=SPATIAL, 2=TEMPORAL */
- switch(config->i_direct_mv_pred) {
- case 0: param.analyse.i_direct_mv_pred = X264_DIRECT_PRED_SPATIAL; break;
- case 1: param.analyse.i_direct_mv_pred = X264_DIRECT_PRED_TEMPORAL; break;
- }
- param.i_deblocking_filter_alphac0 = config->i_inloop_a;
- param.i_deblocking_filter_beta = config->i_inloop_b;
- param.analyse.inter = 0;
- if( config->b_bsub16x16 )
- param.analyse.inter |= X264_ANALYSE_BSUB16x16;
- if( config->b_psub16x16 )
- {
- param.analyse.inter |= X264_ANALYSE_PSUB16x16;
- if( config->b_psub8x8 )
- param.analyse.inter |= X264_ANALYSE_PSUB8x8;
- }
- if( config->b_i4x4 )
- param.analyse.inter |= X264_ANALYSE_I4x4;
- if( config->b_i8x8 )
- param.analyse.inter |= X264_ANALYSE_I8x8;
- param.analyse.b_transform_8x8 = config->b_dct8x8;
- if( config->b_mixedref )
- param.analyse.b_mixed_references = 1;
- switch( config->i_encoding_type )
- {
- case 0: /* 1 PASS ABR */
- param.rc.b_cbr = 1;
- param.rc.i_bitrate = config->bitrate;
- break;
- case 1: /* 1 PASS CQ */
- param.rc.i_qp_constant = config->i_qp;
- break;
- default:
- case 2: /* 2 PASS */
- {
- for( pass_number = 1; pass_number < 99; pass_number++ )
- {
- FILE *f;
- statsfilename_renumber( param.rc.psz_stat_out, config->stats, pass_number );
- if( ( f = fopen( param.rc.psz_stat_out, "r" ) ) != NULL )
- {
- fclose( f );
- if( config->i_pass == 1 )
- unlink( param.rc.psz_stat_out );
- }
- else break;
- }
- if( config->i_pass > pass_number )
- {
- /* missing 1st pass statsfile */
- free( param.rc.psz_stat_out );
- free( param.rc.psz_stat_in );
- return ICERR_ERROR;
- }
- param.rc.i_bitrate = config->i_2passbitrate;
- param.rc.b_cbr = 1;
- if( config->i_pass == 1 )
- {
- statsfilename_renumber( param.rc.psz_stat_out, config->stats, 1 );
- param.rc.b_stat_write = 1;
- param.rc.f_rate_tolerance = 4;
- if( config->b_fast1pass )
- {
- /* adjust or turn off some flags to gain speed, if needed */
- param.analyse.i_subpel_refine = X264_MAX( X264_MIN( 3, param.analyse.i_subpel_refine - 1 ), 1 );
- param.i_frame_reference = ( param.i_frame_reference + 1 ) >> 1;
- param.analyse.inter &= ( ~X264_ANALYSE_PSUB8x8 );
- param.analyse.inter &= ( ~X264_ANALYSE_BSUB16x16 );
- }
- }
- else
- {
- statsfilename_renumber( param.rc.psz_stat_in, config->stats, pass_number - 1 );
- param.rc.b_stat_read = 1;
- if( config->b_updatestats )
- param.rc.b_stat_write = 1;
- param.rc.f_rate_tolerance = 1;
- }
- break;
- }
- }
- /* Open the encoder */
- codec->h = x264_encoder_open( ¶m );
- free( param.rc.psz_stat_out );
- free( param.rc.psz_stat_in );
- if( codec->h == NULL )
- return ICERR_ERROR;
- return ICERR_OK;
- }
- /* */
- LRESULT compress_end(CODEC * codec)
- {
- if( codec->h != NULL )
- {
- x264_encoder_close( codec->h );
- codec->h = NULL;
- }
- free( codec->hCons );
- codec->hCons = NULL;
- return ICERR_OK;
- }
- /* */
- LRESULT compress( CODEC *codec, ICCOMPRESS *icc )
- {
- BITMAPINFOHEADER *inhdr = icc->lpbiInput;
- BITMAPINFOHEADER *outhdr = icc->lpbiOutput;
- x264_picture_t pic;
- int i_nal;
- x264_nal_t *nal;
- int i_out;
- int i;
- /* Init the picture */
- memset( &pic, 0, sizeof( x264_picture_t ) );
- pic.img.i_csp = get_csp( inhdr );
- /* For now biWidth can be divided by 16 so no problem */
- switch( pic.img.i_csp & X264_CSP_MASK )
- {
- case X264_CSP_I420:
- case X264_CSP_YV12:
- pic.img.i_plane = 3;
- pic.img.i_stride[0] = inhdr->biWidth;
- pic.img.i_stride[1] =
- pic.img.i_stride[2] = inhdr->biWidth / 2;
- pic.img.plane[0] = (uint8_t*)icc->lpInput;
- pic.img.plane[1] = pic.img.plane[0] + inhdr->biWidth * inhdr->biHeight;
- pic.img.plane[2] = pic.img.plane[1] + inhdr->biWidth * inhdr->biHeight / 4;
- break;
- case X264_CSP_YUYV:
- pic.img.i_plane = 1;
- pic.img.i_stride[0] = 2 * inhdr->biWidth;
- pic.img.plane[0] = (uint8_t*)icc->lpInput;
- break;
- case X264_CSP_BGR:
- pic.img.i_plane = 1;
- pic.img.i_stride[0] = 3 * inhdr->biWidth;
- pic.img.plane[0] = (uint8_t*)icc->lpInput;
- break;
- case X264_CSP_BGRA:
- pic.img.i_plane = 1;
- pic.img.i_stride[0] = 4 * inhdr->biWidth;
- pic.img.plane[0] = (uint8_t*)icc->lpInput;
- break;
- default:
- return ICERR_BADFORMAT;
- }
- /* encode it */
- x264_encoder_encode( codec->h, &nal, &i_nal, &pic, &pic );
- /* create bitstream, unless we're dropping it in 1st pass */
- i_out = 0;
- if( codec->config.i_encoding_type != 2 || codec->config.i_pass > 1 ) {
- for( i = 0; i < i_nal; i++ ) {
- int i_size = outhdr->biSizeImage - i_out;
- x264_nal_encode( (uint8_t*)icc->lpOutput + i_out, &i_size, 1, &nal[i] );
- i_out += i_size;
- }
- }
- outhdr->biSizeImage = i_out;
- /* Set key frame only for IDR, as they are real synch point, I frame
- aren't always synch point (ex: with multi refs, ref marking) */
- if( pic.i_type == X264_TYPE_IDR )
- *icc->lpdwFlags = AVIIF_KEYFRAME;
- else
- *icc->lpdwFlags = 0;
- return ICERR_OK;
- }