input/ffms.c

   1 /*****************************************************************************
   2  * ffms.c: ffmpegsource input
   3  *****************************************************************************
   4  * Copyright (C) 2009-2017 x264 project
   5  *
   6  * Authors: Mike Gurlitz <mike.gurlitz@gmail.com>
   7  *          Steven Walters <kemuri9@gmail.com>
   8  *          Henrik Gramner <henrik@gramner.com>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02111, USA.
  23  *
  24  * This program is also available under a commercial proprietary license.
  25  * For more information, contact us at licensing@x264.com.
  26  *****************************************************************************/
  27
  28 #include "input.h"
  29 #include <ffms.h>
  30 #define FAIL_IF_ERROR( cond, ... ) FAIL_IF_ERR( cond, "ffms", __VA_ARGS__ )
  31
  32 #undef DECLARE_ALIGNED
  33 #include <libavcodec/avcodec.h>
  34 #include <libswscale/swscale.h>
  35 #include <libavutil/pixdesc.h>
  36
  37 #define PROGRESS_LENGTH 36
  38
  39 typedef struct
  40 {
  41     FFMS_VideoSource *video_source;
  42     FFMS_Track *track;
  43     int reduce_pts;
  44     int vfr_input;
  45     int num_frames;
  46     int64_t time;
  47 } ffms_hnd_t;
  48
  49 static int FFMS_CC update_progress( int64_t current, int64_t total, void *private )
  50 {
  51     int64_t *update_time = private;
  52     int64_t oldtime = *update_time;
  53     int64_t newtime = x264_mdate();
  54     if( oldtime && newtime - oldtime < UPDATE_INTERVAL )
  55         return 0;
  56     *update_time = newtime;
  57
  58     char buf[PROGRESS_LENGTH+5+1];
  59     snprintf( buf, sizeof(buf), "ffms [info]: indexing input file [%.1f%%]", 100.0 * current / total );
  60     fprintf( stderr, "%-*s\r", PROGRESS_LENGTH, buf+5 );
  61     x264_cli_set_console_title( buf );
  62     fflush( stderr );
  63     return 0;
  64 }
  65
  66 /* handle the deprecated jpeg pixel formats */
  67 static int handle_jpeg( int csp, int *fullrange )
  68 {
  69     switch( csp )
  70     {
  71         case AV_PIX_FMT_YUVJ420P: *fullrange = 1; return AV_PIX_FMT_YUV420P;
  72         case AV_PIX_FMT_YUVJ422P: *fullrange = 1; return AV_PIX_FMT_YUV422P;
  73         case AV_PIX_FMT_YUVJ444P: *fullrange = 1; return AV_PIX_FMT_YUV444P;
  74         default:                               return csp;
  75     }
  76 }
  77
  78 static int open_file( char *psz_filename, hnd_t *p_handle, video_info_t *info, cli_input_opt_t *opt )
  79 {
  80     ffms_hnd_t *h = calloc( 1, sizeof(ffms_hnd_t) );
  81     if( !h )
  82         return -1;
  83
  84     FFMS_Init( 0, 1 );
  85     FFMS_ErrorInfo e;
  86     e.BufferSize = 0;
  87     int seekmode = opt->seek ? FFMS_SEEK_NORMAL : FFMS_SEEK_LINEAR_NO_RW;
  88
  89     FFMS_Index *idx = NULL;
  90     if( opt->index_file )
  91     {
  92         x264_struct_stat index_s, input_s;
  93         if( !x264_stat( opt->index_file, &index_s ) && !x264_stat( psz_filename, &input_s ) && input_s.st_mtime < index_s.st_mtime )
  94         {
  95             idx = FFMS_ReadIndex( opt->index_file, &e );
  96             if( idx && FFMS_IndexBelongsToFile( idx, psz_filename, &e ) )
  97             {
  98                 FFMS_DestroyIndex( idx );
  99                 idx = NULL;
 100             }
 101         }
 102     }
 103     if( !idx )
 104     {
 105         FFMS_Indexer *indexer = FFMS_CreateIndexer( psz_filename, &e );
 106         FAIL_IF_ERROR( !indexer, "could not create indexer\n" );
 107
 108         if( opt->progress )
 109             FFMS_SetProgressCallback( indexer, update_progress, &h->time );
 110
 111         idx = FFMS_DoIndexing2( indexer, FFMS_IEH_ABORT, &e );
 112         fprintf( stderr, "%*c", PROGRESS_LENGTH+1, '\r' );
 113         FAIL_IF_ERROR( !idx, "could not create index\n" );
 114
 115         if( opt->index_file && FFMS_WriteIndex( opt->index_file, idx, &e ) )
 116             x264_cli_log( "ffms", X264_LOG_WARNING, "could not write index file\n" );
 117     }
 118
 119     int trackno = FFMS_GetFirstTrackOfType( idx, FFMS_TYPE_VIDEO, &e );
 120     if( trackno >= 0 )
 121         h->video_source = FFMS_CreateVideoSource( psz_filename, trackno, idx, opt->demuxer_threads, seekmode, &e );
 122     FFMS_DestroyIndex( idx );
 123
 124     FAIL_IF_ERROR( trackno < 0, "could not find video track\n" );
 125     FAIL_IF_ERROR( !h->video_source, "could not create video source\n" );
 126
 127     const FFMS_VideoProperties *videop = FFMS_GetVideoProperties( h->video_source );
 128     info->num_frames   = h->num_frames = videop->NumFrames;
 129     info->sar_height   = videop->SARDen;
 130     info->sar_width    = videop->SARNum;
 131     info->fps_den      = videop->FPSDenominator;
 132     info->fps_num      = videop->FPSNumerator;
 133     h->vfr_input       = info->vfr;
 134     /* ffms is thread unsafe as it uses a single frame buffer for all frame requests */
 135     info->thread_safe  = 0;
 136
 137     if( !opt->b_accurate_fps )
 138         x264_ntsc_fps( &info->fps_num, &info->fps_den );
 139
 140     const FFMS_Frame *frame = FFMS_GetFrame( h->video_source, 0, &e );
 141     FAIL_IF_ERROR( !frame, "could not read frame 0\n" );
 142
 143     /* -1 = 'unset' (internal) , 2 from lavf|ffms = 'unset' */
 144     if( frame->ColorSpace >= 0 && frame->ColorSpace <= 8 && frame->ColorSpace != 2 )
 145         info->colormatrix = frame->ColorSpace;
 146     else
 147         info->colormatrix = -1;
 148
 149     info->fullrange  = 0;
 150     info->width      = frame->EncodedWidth;
 151     info->height     = frame->EncodedHeight;
 152     info->csp        = handle_jpeg( frame->EncodedPixelFormat, &info->fullrange ) | X264_CSP_OTHER;
 153     info->interlaced = frame->InterlacedFrame;
 154     info->tff        = frame->TopFieldFirst;
 155     info->fullrange |= frame->ColorRange == FFMS_CR_JPEG;
 156
 157     /* ffms timestamps are in milliseconds. ffms also uses int64_ts for timebase,
 158      * so we need to reduce large timebases to prevent overflow */
 159     h->track = FFMS_GetTrackFromVideo( h->video_source );
 160     const FFMS_TrackTimeBase *timebase = FFMS_GetTimeBase( h->track );
 161     if( h->vfr_input )
 162     {
 163         int64_t timebase_num = timebase->Num;
 164         int64_t timebase_den = timebase->Den * 1000;
 165         h->reduce_pts = 0;
 166
 167         while( timebase_num > UINT32_MAX || timebase_den > INT32_MAX )
 168         {
 169             timebase_num >>= 1;
 170             timebase_den >>= 1;
 171             h->reduce_pts++;
 172         }
 173         info->timebase_num = timebase_num;
 174         info->timebase_den = timebase_den;
 175     }
 176
 177     /* show video info */
 178     FFMS_Indexer *idxer = FFMS_CreateIndexer( psz_filename, &e );
 179     const char *format  = FFMS_GetFormatNameI( idxer );
 180     const char *codec   = FFMS_GetCodecNameI( idxer, trackno );
 181     double duration     = videop->NumFrames * videop->FPSDenominator / videop->FPSNumerator;
 182     x264_cli_log( "ffms", X264_LOG_INFO,
 183                   "\n Format    : %s"
 184                   "\n Codec     : %s"
 185                   "\n PixFmt    : %s"
 186                   "\n Framerate : %d/%d"
 187                   "\n Timebase  : %"PRIu64"/%"PRIu64
 188                   "\n Duration  : %d:%02d:%02d\n",
 189                   format,
 190                   codec,
 191                   av_pix_fmt_desc_get(frame->EncodedPixelFormat)->name,
 192                   videop->FPSNumerator, videop->FPSDenominator,
 193                   (uint64_t)timebase->Num, (uint64_t)timebase->Den * 1000,
 194                   (int)duration / 60 / 60, (int)duration / 60 % 60, (int)duration - (int)duration / 60 * 60 );
 195     if( !strcmp( codec,"rawvideo" ) )
 196         x264_cli_log( "ffms", X264_LOG_WARNING, "recommend using --demuxer lavf with rawvideo" );
 197     FFMS_CancelIndexing( idxer );
 198
 199     *p_handle = h;
 200     return 0;
 201 }
 202
 203 static int picture_alloc( cli_pic_t *pic, hnd_t handle, int csp, int width, int height )
 204 {
 205     if( x264_cli_pic_alloc( pic, X264_CSP_NONE, width, height ) )
 206         return -1;
 207     pic->img.csp = csp;
 208     pic->img.planes = 4;
 209     return 0;
 210 }
 211
 212 static int read_frame( cli_pic_t *pic, hnd_t handle, int i_frame )
 213 {
 214     ffms_hnd_t *h = handle;
 215     if( i_frame >= h->num_frames )
 216         return -1;
 217     FFMS_ErrorInfo e;
 218     e.BufferSize = 0;
 219     const FFMS_Frame *frame = FFMS_GetFrame( h->video_source, i_frame, &e );
 220     FAIL_IF_ERROR( !frame, "could not read frame %d \n", i_frame );
 221
 222     memcpy( pic->img.stride, frame->Linesize, sizeof(pic->img.stride) );
 223     memcpy( pic->img.plane, frame->Data, sizeof(pic->img.plane) );
 224
 225     if( h->vfr_input )
 226     {
 227         const FFMS_FrameInfo *info = FFMS_GetFrameInfo( h->track, i_frame );
 228         FAIL_IF_ERROR( info->PTS == AV_NOPTS_VALUE, "invalid timestamp. "
 229                        "Use --force-cfr and specify a framerate with --fps\n" );
 230
 231         pic->pts = info->PTS >> h->reduce_pts;
 232         pic->duration = 0;
 233     }
 234     return 0;
 235 }
 236
 237 static void picture_clean( cli_pic_t *pic, hnd_t handle )
 238 {
 239     memset( pic, 0, sizeof(cli_pic_t) );
 240 }
 241
 242 static int close_file( hnd_t handle )
 243 {
 244     ffms_hnd_t *h = handle;
 245     FFMS_DestroyVideoSource( h->video_source );
 246     free( h );
 247     return 0;
 248 }
 249
 250 const cli_input_t ffms_input = { open_file, picture_alloc, read_frame, NULL, picture_clean, close_file };