/* $Id: scan.c,v 1.52 2005/11/25 15:05:25 titer Exp $ This file is part of the HandBrake source code. Homepage: . It may be used under the terms of the GNU General Public License. */ #include "hb.h" #include "hbffmpeg.h" #include "a52dec/a52.h" #include "dca.h" typedef struct { hb_handle_t * h; volatile int * die; char * path; int title_index; hb_list_t * list_title; hb_bd_t * bd; hb_dvd_t * dvd; hb_stream_t * stream; hb_batch_t * batch; int preview_count; int store_previews; uint64_t min_title_duration; } hb_scan_t; static void ScanFunc( void * ); static int DecodePreviews( hb_scan_t *, hb_title_t * title ); static void LookForAudio( hb_title_t * title, hb_buffer_t * b ); static int AllAudioOK( hb_title_t * title ); static const char *aspect_to_string( double aspect ) { switch ( (int)(aspect * 9.) ) { case 9 * 4 / 3: return "4:3"; case 9 * 16 / 9: return "16:9"; } static char arstr[32]; sprintf( arstr, aspect >= 1.? "%.2f:1" : "1:%.2f", aspect ); return arstr; } hb_thread_t * hb_scan_init( hb_handle_t * handle, volatile int * die, const char * path, int title_index, hb_list_t * list_title, int preview_count, int store_previews, uint64_t min_duration ) { hb_scan_t * data = calloc( sizeof( hb_scan_t ), 1 ); data->h = handle; data->die = die; data->path = strdup( path ); data->title_index = title_index; data->list_title = list_title; data->preview_count = preview_count; data->store_previews = store_previews; data->min_title_duration = min_duration; return hb_thread_init( "scan", ScanFunc, data, HB_NORMAL_PRIORITY ); } static void ScanFunc( void * _data ) { hb_scan_t * data = (hb_scan_t *) _data; hb_title_t * title; int i; int feature = 0; data->bd = NULL; data->dvd = NULL; data->stream = NULL; /* Try to open the path as a DVD. If it fails, try as a file */ if( ( data->bd = hb_bd_init( data->path ) ) ) { hb_log( "scan: BD has %d title(s)", hb_bd_title_count( data->bd ) ); if( data->title_index ) { /* Scan this title only */ hb_list_add( data->list_title, hb_bd_title_scan( data->bd, data->title_index, 0 ) ); } else { /* Scan all titles */ for( i = 0; i < hb_bd_title_count( data->bd ); i++ ) { hb_list_add( data->list_title, hb_bd_title_scan( data->bd, i + 1, data->min_title_duration ) ); } feature = hb_bd_main_feature( data->bd, data->list_title ); } } else if( ( data->dvd = hb_dvd_init( data->path ) ) ) { hb_log( "scan: DVD has %d title(s)", hb_dvd_title_count( data->dvd ) ); if( data->title_index ) { /* Scan this title only */ hb_list_add( data->list_title, hb_dvd_title_scan( data->dvd, data->title_index, 0 ) ); } else { /* Scan all titles */ for( i = 0; i < hb_dvd_title_count( data->dvd ); i++ ) { hb_list_add( data->list_title, hb_dvd_title_scan( data->dvd, i + 1, data->min_title_duration ) ); } feature = hb_dvd_main_feature( data->dvd, data->list_title ); } } else if ( ( data->batch = hb_batch_init( data->path ) ) ) { if( data->title_index ) { /* Scan this title only */ title = hb_batch_title_scan( data->batch, data->title_index ); if ( title ) { hb_list_add( data->list_title, title ); } } else { /* Scan all titles */ for( i = 0; i < hb_batch_title_count( data->batch ); i++ ) { hb_title_t * title; title = hb_batch_title_scan( data->batch, i + 1 ); if ( title != NULL ) { hb_list_add( data->list_title, title ); } } } } else { hb_title_t * title = hb_title_init( data->path, 0 ); if ( (data->stream = hb_stream_open( data->path, title, 1 ) ) != NULL ) { title = hb_stream_title_scan( data->stream, title ); if ( title ) hb_list_add( data->list_title, title ); } else { hb_title_close( &title ); hb_log( "scan: unrecognized file type" ); return; } } for( i = 0; i < hb_list_count( data->list_title ); ) { int j; hb_state_t state; hb_audio_t * audio; if ( *data->die ) { goto finish; } title = hb_list_item( data->list_title, i ); #define p state.param.scanning /* Update the UI */ state.state = HB_STATE_SCANNING; p.title_cur = title->index; p.title_count = data->dvd ? hb_dvd_title_count( data->dvd ) : data->bd ? hb_bd_title_count( data->bd ) : data->batch ? hb_batch_title_count( data->batch ) : hb_list_count(data->list_title); hb_set_state( data->h, &state ); #undef p /* Decode previews */ /* this will also detect more AC3 / DTS information */ if( !DecodePreviews( data, title ) ) { /* TODO: free things */ hb_list_rem( data->list_title, title ); for( j = 0; j < hb_list_count( title->list_audio ); j++) { audio = hb_list_item( title->list_audio, j ); if ( audio->priv.scan_cache ) { hb_fifo_flush( audio->priv.scan_cache ); hb_fifo_close( &audio->priv.scan_cache ); } } hb_title_close( &title ); continue; } /* Make sure we found audio rates and bitrates */ for( j = 0; j < hb_list_count( title->list_audio ); ) { audio = hb_list_item( title->list_audio, j ); if ( audio->priv.scan_cache ) { hb_fifo_flush( audio->priv.scan_cache ); hb_fifo_close( &audio->priv.scan_cache ); } if( !audio->config.in.bitrate ) { hb_log( "scan: removing audio 0x%x because no bitrate found", audio->id ); hb_list_rem( title->list_audio, audio ); free( audio ); continue; } j++; } if ( data->dvd || data->bd ) { // The subtitle width and height needs to be set to the // title widht and height for DVDs. title width and // height don't get set until we decode previews, so // we can't set subtitle width/height till we get here. for( j = 0; j < hb_list_count( title->list_subtitle ); j++ ) { hb_subtitle_t *subtitle = hb_list_item( title->list_subtitle, j ); if ( subtitle->source == VOBSUB || subtitle->source == PGSSUB ) { subtitle->width = title->width; subtitle->height = title->height; } } } i++; } /* Init jobs templates */ for( i = 0; i < hb_list_count( data->list_title ); i++ ) { hb_job_t * job; title = hb_list_item( data->list_title, i ); job = calloc( sizeof( hb_job_t ), 1 ); title->job = job; job->title = title; job->feature = feature; /* Set defaults settings */ job->chapter_start = 1; job->chapter_end = hb_list_count( title->list_chapter ); /* Autocrop by default. Gnark gnark */ memcpy( job->crop, title->crop, 4 * sizeof( int ) ); /* Preserve a source's pixel aspect, if it's available. */ if( title->pixel_aspect_width && title->pixel_aspect_height ) { job->anamorphic.par_width = title->pixel_aspect_width; job->anamorphic.par_height = title->pixel_aspect_height; } if( title->aspect != 0 && title->aspect != 1. && !job->anamorphic.par_width && !job->anamorphic.par_height) { hb_reduce( &job->anamorphic.par_width, &job->anamorphic.par_height, (int)(title->aspect * title->height + 0.5), title->width ); } job->width = title->width - job->crop[2] - job->crop[3]; hb_fix_aspect( job, HB_KEEP_WIDTH ); if( job->height > title->height - job->crop[0] - job->crop[1] ) { job->height = title->height - job->crop[0] - job->crop[1]; hb_fix_aspect( job, HB_KEEP_HEIGHT ); } hb_log( "scan: title (%d) job->width:%d, job->height:%d", i, job->width, job->height ); job->keep_ratio = 1; job->vcodec = HB_VCODEC_FFMPEG_MPEG4; job->vquality = -1.0; job->vbitrate = 1000; job->pass = 0; job->vrate = title->rate; job->vrate_base = title->rate_base; job->list_audio = hb_list_init(); job->list_subtitle = hb_list_init(); job->list_filter = hb_list_init(); job->mux = HB_MUX_MP4; } finish: if( data->bd ) { hb_bd_close( &data->bd ); } if( data->dvd ) { hb_dvd_close( &data->dvd ); } if (data->stream) { hb_stream_close(&data->stream); } if( data->batch ) { hb_batch_close( &data->batch ); } free( data->path ); free( data ); _data = NULL; } // ----------------------------------------------- // stuff related to cropping #define DARK 32 static inline int absdiff( int x, int y ) { return x < y ? y - x : x - y; } static inline int clampBlack( int x ) { // luma 'black' is 16 and anything less should be clamped at 16 return x < 16 ? 16 : x; } static int row_all_dark( hb_work_info_t *info, uint8_t* luma, int row ) { luma += info->width * row; // compute the average luma value of the row int i, avg = 0; for ( i = 0; i < info->width; ++i ) { avg += clampBlack( luma[i] ); } avg /= info->width; if ( avg >= DARK ) return 0; // since we're trying to detect smooth borders, only take the row if // all pixels are within +-16 of the average (this range is fairly coarse // but there's a lot of quantization noise for luma values near black // so anything less will fail to crop because of the noise). for ( i = 0; i < info->width; ++i ) { if ( absdiff( avg, clampBlack( luma[i] ) ) > 16 ) return 0; } return 1; } static int column_all_dark( hb_work_info_t *info, uint8_t* luma, int top, int bottom, int col ) { int stride = info->width; int height = info->height - top - bottom; luma += stride * top + col; // compute the average value of the column int i = height, avg = 0, row = 0; for ( ; --i >= 0; row += stride ) { avg += clampBlack( luma[row] ); } avg /= height; if ( avg >= DARK ) return 0; // since we're trying to detect smooth borders, only take the column if // all pixels are within +-16 of the average. i = height, row = 0; for ( ; --i >= 0; row += stride ) { if ( absdiff( avg, clampBlack( luma[row] ) ) > 16 ) return 0; } return 1; } #undef DARK typedef struct { int n; int *t; int *b; int *l; int *r; } crop_record_t; static crop_record_t * crop_record_init( int max_previews ) { crop_record_t *crops = calloc( 1, sizeof(*crops) ); crops->t = calloc( max_previews, sizeof(int) ); crops->b = calloc( max_previews, sizeof(int) ); crops->l = calloc( max_previews, sizeof(int) ); crops->r = calloc( max_previews, sizeof(int) ); return crops; } static void crop_record_free( crop_record_t *crops ) { free( crops->t ); free( crops->b ); free( crops->l ); free( crops->r ); free( crops ); } static void record_crop( crop_record_t *crops, int t, int b, int l, int r ) { crops->t[crops->n] = t; crops->b[crops->n] = b; crops->l[crops->n] = l; crops->r[crops->n] = r; ++crops->n; } static int compare_int( const void *a, const void *b ) { return *(const int *)a - *(const int *)b; } static void sort_crops( crop_record_t *crops ) { qsort( crops->t, crops->n, sizeof(crops->t[0]), compare_int ); qsort( crops->b, crops->n, sizeof(crops->t[0]), compare_int ); qsort( crops->l, crops->n, sizeof(crops->t[0]), compare_int ); qsort( crops->r, crops->n, sizeof(crops->t[0]), compare_int ); } // ----------------------------------------------- // stuff related to title width/height/aspect info typedef struct { int count; /* number of times we've seen this info entry */ hb_work_info_t info; /* copy of info entry */ } info_list_t; static void remember_info( info_list_t *info_list, hb_work_info_t *info ) { for ( ; info_list->count; ++info_list ) { if ( memcmp( &info_list->info, info, sizeof(*info) ) == 0 ) { // we found a match - bump its count ++info_list->count; return; } } // no match found - add new entry to list (info_list points to // the first free slot). NB - we assume that info_list was allocated // so that it's big enough even if there are no dups. I.e., 10 slots // allocated if there are 10 previews. info_list->count = 1; info_list->info = *info; } static void most_common_info( info_list_t *info_list, hb_work_info_t *info ) { int i, biggest = 0; for ( i = 1; info_list[i].count; ++i ) { if ( info_list[i].count > info_list[biggest].count ) biggest = i; } *info = info_list[biggest].info; } static int has_resolution_change( info_list_t *info_list ) { int w, h, i; if( !info_list[0].count ) return 0; w = info_list[0].info.width; h = info_list[0].info.height; for ( i = 1; info_list[i].count; ++i ) { if ( w != info_list[i].info.width || h != info_list[i].info.height ) return 1; } return 0; } static int is_close_to( int val, int target, int thresh ) { int diff = val - target; diff = diff < 0 ? -diff : diff; return diff < thresh; } /*********************************************************************** * DecodePreviews *********************************************************************** * Decode 10 pictures for the given title. * It assumes that data->reader and data->vts have successfully been * DVDOpen()ed and ifoOpen()ed. **********************************************************************/ static int DecodePreviews( hb_scan_t * data, hb_title_t * title ) { int i, npreviews = 0; hb_buffer_t * buf, * buf_es; hb_list_t * list_es; int progressive_count = 0; int pulldown_count = 0; int doubled_frame_count = 0; int interlaced_preview_count = 0; info_list_t * info_list = calloc( data->preview_count+1, sizeof(*info_list) ); crop_record_t *crops = crop_record_init( data->preview_count ); list_es = hb_list_init(); if( data->batch ) { hb_log( "scan: decoding previews for title %d (%s)", title->index, title->path ); } else { hb_log( "scan: decoding previews for title %d", title->index ); } if (data->bd) { hb_bd_start( data->bd, title ); hb_log( "scan: title angle(s) %d", title->angle_count ); } else if (data->dvd) { hb_dvd_start( data->dvd, title, 1 ); title->angle_count = hb_dvd_angle_count( data->dvd ); hb_log( "scan: title angle(s) %d", title->angle_count ); } else if (data->batch) { data->stream = hb_stream_open( title->path, title, 1 ); } int vcodec = title->video_codec? title->video_codec : WORK_DECMPEG2; #if defined(USE_FF_MPEG2) if (vcodec == WORK_DECMPEG2) { vcodec = WORK_DECAVCODECV; title->video_codec_param = CODEC_ID_MPEG2VIDEO; } #endif hb_work_object_t *vid_decoder = hb_get_work( vcodec ); vid_decoder->codec_param = title->video_codec_param; vid_decoder->title = title; vid_decoder->init( vid_decoder, NULL ); for( i = 0; i < data->preview_count; i++ ) { int j; if ( *data->die ) { free( info_list ); crop_record_free( crops ); return 0; } if (data->bd) { if( !hb_bd_seek( data->bd, (float) ( i + 1 ) / ( data->preview_count + 1.0 ) ) ) { continue; } } if (data->dvd) { if( !hb_dvd_seek( data->dvd, (float) ( i + 1 ) / ( data->preview_count + 1.0 ) ) ) { continue; } } else if (data->stream) { /* we start reading streams at zero rather than 1/11 because * short streams may have only one sequence header in the entire * file and we need it to decode any previews. */ if (!hb_stream_seek(data->stream, (float) i / ( data->preview_count + 1.0 ) ) ) { continue; } } hb_deep_log( 2, "scan: preview %d", i + 1 ); if ( vid_decoder->flush ) vid_decoder->flush( vid_decoder ); hb_buffer_t * vid_buf = NULL; for( j = 0; j < 10240 ; j++ ) { if (data->bd) { if( (buf = hb_bd_read( data->bd )) == NULL ) { if ( vid_buf ) { break; } hb_log( "Warning: Could not read data for preview %d, skipped", i + 1 ); goto skip_preview; } } else if (data->dvd) { if( (buf = hb_dvd_read( data->dvd )) == NULL ) { if ( vid_buf ) { break; } hb_log( "Warning: Could not read data for preview %d, skipped", i + 1 ); goto skip_preview; } } else if (data->stream) { if ( (buf = hb_stream_read( data->stream )) == NULL ) { if ( vid_buf ) { break; } hb_log( "Warning: Could not read data for preview %d, skipped", i + 1 ); goto skip_preview; } } else { // Silence compiler warning buf = NULL; hb_error( "Error: This can't happen!" ); goto skip_preview; } (hb_demux[title->demuxer])(buf, list_es, 0 ); while( ( buf_es = hb_list_item( list_es, 0 ) ) ) { hb_list_rem( list_es, buf_es ); if( buf_es->s.id == title->video_id && vid_buf == NULL ) { vid_decoder->work( vid_decoder, &buf_es, &vid_buf ); } else if( ! AllAudioOK( title ) ) { LookForAudio( title, buf_es ); buf_es = NULL; } if ( buf_es ) hb_buffer_close( &buf_es ); } if( vid_buf && AllAudioOK( title ) ) break; } if( ! vid_buf ) { hb_log( "scan: could not get a decoded picture" ); continue; } /* Get size and rate infos */ hb_work_info_t vid_info; if( !vid_decoder->info( vid_decoder, &vid_info ) ) { /* * Could not fill vid_info, don't continue and try to use vid_info * in this case. */ if (vid_buf) { hb_buffer_close( &vid_buf ); } hb_log( "scan: could not get a video information" ); continue; } remember_info( info_list, &vid_info ); if( is_close_to( vid_info.rate_base, 900900, 100 ) && ( vid_buf->s.flags & PIC_FLAG_REPEAT_FIRST_FIELD ) ) { /* Potentially soft telecine material */ pulldown_count++; } if( vid_buf->s.flags & PIC_FLAG_REPEAT_FRAME ) { // AVCHD-Lite specifies that all streams are // 50 or 60 fps. To produce 25 or 30 fps, camera // makers are repeating all frames. doubled_frame_count++; } if( is_close_to( vid_info.rate_base, 1126125, 100 ) ) { // Frame FPS is 23.976 (meaning it's progressive), so start keeping // track of how many are reporting at that speed. When enough // show up that way, we want to make that the overall title FPS. progressive_count++; } while( ( buf_es = hb_list_item( list_es, 0 ) ) ) { hb_list_rem( list_es, buf_es ); hb_buffer_close( &buf_es ); } /* Check preview for interlacing artifacts */ if( hb_detect_comb( vid_buf, vid_info.width, vid_info.height, 10, 30, 9, 10, 30, 9 ) ) { hb_deep_log( 2, "Interlacing detected in preview frame %i", i+1); interlaced_preview_count++; } if( data->store_previews ) { hb_save_preview( data->h, title->index, i, vid_buf ); } /* Detect black borders */ #define Y vid_buf->data int top, bottom, left, right; int h4 = vid_info.height / 4, w4 = vid_info.width / 4; // When widescreen content is matted to 16:9 or 4:3 there's sometimes // a thin border on the outer edge of the matte. On TV content it can be // "line 21" VBI data that's normally hidden in the overscan. For HD // content it can just be a diagnostic added in post production so that // the frame borders are visible. We try to ignore these borders so // we can crop the matte. The border width depends on the resolution // (12 pixels on 1080i looks visually the same as 4 pixels on 480i) // so we allow the border to be up to 1% of the frame height. const int border = vid_info.height / 100; for ( top = border; top < h4; ++top ) { if ( ! row_all_dark( &vid_info, Y, top ) ) break; } if ( top <= border ) { // we never made it past the border region - see if the rows we // didn't check are dark or if we shouldn't crop at all. for ( top = 0; top < border; ++top ) { if ( ! row_all_dark( &vid_info, Y, top ) ) break; } if ( top >= border ) { top = 0; } } for ( bottom = border; bottom < h4; ++bottom ) { if ( ! row_all_dark( &vid_info, Y, vid_info.height - 1 - bottom ) ) break; } if ( bottom <= border ) { for ( bottom = 0; bottom < border; ++bottom ) { if ( ! row_all_dark( &vid_info, Y, vid_info.height - 1 - bottom ) ) break; } if ( bottom >= border ) { bottom = 0; } } for ( left = 0; left < w4; ++left ) { if ( ! column_all_dark( &vid_info, Y, top, bottom, left ) ) break; } for ( right = 0; right < w4; ++right ) { if ( ! column_all_dark( &vid_info, Y, top, bottom, vid_info.width - 1 - right ) ) break; } // only record the result if all the crops are less than a quarter of // the frame otherwise we can get fooled by frames with a lot of black // like titles, credits & fade-thru-black transitions. if ( top < h4 && bottom < h4 && left < w4 && right < w4 ) { record_crop( crops, top, bottom, left, right ); } ++npreviews; skip_preview: /* Make sure we found audio rates and bitrates */ for( j = 0; j < hb_list_count( title->list_audio ); j++ ) { hb_audio_t * audio = hb_list_item( title->list_audio, j ); if ( audio->priv.scan_cache ) { hb_fifo_flush( audio->priv.scan_cache ); } } if (vid_buf) { hb_buffer_close( &vid_buf ); } } vid_decoder->close( vid_decoder ); free( vid_decoder ); if ( data->batch && data->stream ) { hb_stream_close( &data->stream ); } if ( npreviews ) { // use the most common frame info for our final title dimensions hb_work_info_t vid_info; most_common_info( info_list, &vid_info ); title->has_resolution_change = has_resolution_change( info_list ); if ( title->video_codec_name == NULL ) { title->video_codec_name = strdup( vid_info.name ); } title->width = vid_info.width; title->height = vid_info.height; if ( vid_info.rate && vid_info.rate_base ) { // if the frame rate is very close to one of our "common" framerates, // assume it actually is said frame rate; e.g. some 24000/1001 sources // may have a rate_base of 1126124 (instead of 1126125) for( i = 0; i < hb_video_rates_count; i++ ) { if( is_close_to( vid_info.rate_base, hb_video_rates[i].rate, 100 ) ) { vid_info.rate_base = hb_video_rates[i].rate; break; } } title->rate = vid_info.rate; title->rate_base = vid_info.rate_base; if( vid_info.rate_base == 900900 ) { if( pulldown_count >= npreviews / 4 ) { title->rate_base = 1126125; hb_deep_log( 2, "Pulldown detected, setting fps to 23.976" ); } if( progressive_count >= npreviews / 2 ) { // We've already deduced that the frame rate is 23.976, // so set it back again. title->rate_base = 1126125; hb_deep_log( 2, "Title's mostly NTSC Film, setting fps to 23.976" ); } } if( doubled_frame_count >= 3 * npreviews / 4 ) { // We've detected that a significant number of the frames // have been doubled in duration by repeat flags. title->rate_base = 2 * vid_info.rate_base; hb_deep_log( 2, "Repeat frames detected, setting fps to %.3f", (float)title->rate / title->rate_base ); } } title->video_bitrate = vid_info.bitrate; if( vid_info.pixel_aspect_width && vid_info.pixel_aspect_height ) { title->pixel_aspect_width = vid_info.pixel_aspect_width; title->pixel_aspect_height = vid_info.pixel_aspect_height; } title->color_prim = vid_info.color_prim; title->color_transfer = vid_info.color_transfer; title->color_matrix = vid_info.color_matrix; // compute the aspect ratio based on the storage dimensions and the // pixel aspect ratio (if supplied) or just storage dimensions if no PAR. title->aspect = (double)title->width / (double)title->height; title->aspect *= (double)title->pixel_aspect_width / (double)title->pixel_aspect_height; // For unknown reasons some French PAL DVDs put the original // content's aspect ratio into the mpeg PAR even though it's // the wrong PAR for the DVD. Apparently they rely on the fact // that DVD players ignore the content PAR and just use the // aspect ratio from the DVD metadata. So, if the aspect computed // from the PAR is different from the container's aspect we use // the container's aspect & recompute the PAR from it. if( title->container_aspect && (int)(title->aspect * 9) != (int)(title->container_aspect * 9) ) { hb_log("scan: content PAR gives wrong aspect %.2f; " "using container aspect %.2f", title->aspect, title->container_aspect ); title->aspect = title->container_aspect; hb_reduce( &title->pixel_aspect_width, &title->pixel_aspect_height, (int)(title->aspect * title->height + 0.5), title->width ); } // don't try to crop unless we got at least 3 previews if ( crops->n > 2 ) { sort_crops( crops ); // The next line selects median cropping - at least // 50% of the frames will have their borders removed. // Other possible choices are loose cropping (i = 0) where // no non-black pixels will be cropped from any frame and a // tight cropping (i = crops->n - (crops->n >> 2)) where at // least 75% of the frames will have their borders removed. i = crops->n >> 1; title->crop[0] = EVEN( crops->t[i] ); title->crop[1] = EVEN( crops->b[i] ); title->crop[2] = EVEN( crops->l[i] ); title->crop[3] = EVEN( crops->r[i] ); } hb_log( "scan: %d previews, %dx%d, %.3f fps, autocrop = %d/%d/%d/%d, " "aspect %s, PAR %d:%d", npreviews, title->width, title->height, (float) title->rate / (float) title->rate_base, title->crop[0], title->crop[1], title->crop[2], title->crop[3], aspect_to_string( title->aspect ), title->pixel_aspect_width, title->pixel_aspect_height ); if( interlaced_preview_count >= ( npreviews / 2 ) ) { hb_log("Title is likely interlaced or telecined (%i out of %i previews). You should do something about that.", interlaced_preview_count, npreviews); title->detected_interlacing = 1; } else { title->detected_interlacing = 0; } } crop_record_free( crops ); free( info_list ); while( ( buf_es = hb_list_item( list_es, 0 ) ) ) { hb_list_rem( list_es, buf_es ); hb_buffer_close( &buf_es ); } hb_list_close( &list_es ); if (data->bd) hb_bd_stop( data->bd ); if (data->dvd) hb_dvd_stop( data->dvd ); return npreviews; } /* * This routine is called for every frame from a non-video elementary stream. * These are a mix of audio & subtitle streams, some of which we want & some * we're ignoring. This routine checks the frame against all our audio streams * to see if it's one we want and haven't identified yet. If yes, it passes the * frame to a codec-specific id routine which is responsible for filling in * the sample rate, bit rate, channels & other audio parameters. * * Since a sample rate is essential for further audio processing, any audio * stream which isn't successfully id'd by is deleted at the end of the scan. * This is necessary to avoid ambiguities where things that might be audio * aren't (e.g., some European DVD Teletext streams use the same IDs as US ATSC * AC-3 audio). */ static void LookForAudio( hb_title_t * title, hb_buffer_t * b ) { int i; hb_audio_t * audio = NULL; for( i = 0; i < hb_list_count( title->list_audio ); i++ ) { audio = hb_list_item( title->list_audio, i ); /* check if this elementary stream is one we want */ if ( audio->id == b->s.id ) { break; } else { audio = NULL; } } if( !audio || audio->config.in.bitrate != 0 ) { /* not found or already done */ hb_buffer_close( &b ); return; } if ( audio->priv.scan_cache == NULL ) audio->priv.scan_cache = hb_fifo_init( 16, 16 ); if ( hb_fifo_size_bytes( audio->priv.scan_cache ) >= 16384 ) { hb_buffer_t * tmp; tmp = hb_fifo_get( audio->priv.scan_cache ); hb_buffer_close( &tmp ); } hb_fifo_push( audio->priv.scan_cache, b ); hb_work_object_t *w = hb_codec_decoder( audio->config.in.codec ); if ( w == NULL || w->bsinfo == NULL ) { hb_log( "Internal error in scan: unhandled audio type %d for id 0x%x", audio->config.in.codec, audio->id ); goto drop_audio; } hb_work_info_t info; w->audio = audio; w->codec_param = audio->config.in.codec_param; b = hb_fifo_see( audio->priv.scan_cache ); int ret = w->bsinfo( w, b, &info ); if ( ret < 0 ) { hb_log( "no info on audio type %d/0x%x for id 0x%x", audio->config.in.codec, audio->config.in.codec_param, audio->id ); goto drop_audio; } if ( !info.bitrate ) { /* didn't find any info */ free( w ); return; } hb_fifo_flush( audio->priv.scan_cache ); hb_fifo_close( &audio->priv.scan_cache ); audio->config.in.samplerate = info.rate; audio->config.in.samples_per_frame = info.samples_per_frame; audio->config.in.bitrate = info.bitrate; audio->config.in.channel_layout = info.channel_layout; audio->config.in.channel_map = info.channel_map; audio->config.in.version = info.version; audio->config.in.mode = info.mode; audio->config.flags.ac3 = info.flags; // update the audio description string based on the info we found if ( audio->config.flags.ac3 & AUDIO_F_DOLBY ) { strcat( audio->config.lang.description, " (Dolby Surround)" ); } else { int layout = audio->config.in.channel_layout; char *desc = audio->config.lang.description + strlen( audio->config.lang.description ); sprintf( desc, " (%d.%d ch)", HB_INPUT_CH_LAYOUT_GET_DISCRETE_FRONT_COUNT(layout) + HB_INPUT_CH_LAYOUT_GET_DISCRETE_REAR_COUNT(layout), HB_INPUT_CH_LAYOUT_GET_DISCRETE_LFE_COUNT(layout) ); } hb_log( "scan: audio 0x%x: %s, rate=%dHz, bitrate=%d %s", audio->id, info.name, audio->config.in.samplerate, audio->config.in.bitrate, audio->config.lang.description ); free( w ); return; // We get here if there's no hope of finding info on an audio bitstream, // either because we don't have a decoder (or a decoder with a bitstream // info proc) or because the decoder's info proc said that the stream // wasn't something it could handle. Delete the item from the title's // audio list so we won't keep reading packets while trying to get its // bitstream info. drop_audio: if ( w ) free( w ); hb_fifo_flush( audio->priv.scan_cache ); hb_fifo_close( &audio->priv.scan_cache ); hb_list_rem( title->list_audio, audio ); return; } /* * This routine checks to see if we've ID'd all the audio streams associated * with a title. It returns 0 if there are more to ID & 1 if all are done. */ static int AllAudioOK( hb_title_t * title ) { int i; hb_audio_t * audio; for( i = 0; i < hb_list_count( title->list_audio ); i++ ) { audio = hb_list_item( title->list_audio, i ); if( audio->config.in.bitrate == 0 ) { return 0; } } return 1; }