vpxenc

00001 /*
00002  *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
00003  *
00004  *  Use of this source code is governed by a BSD-style license
00005  *  that can be found in the LICENSE file in the root of the source
00006  *  tree. An additional intellectual property rights grant can be found
00007  *  in the file PATENTS.  All contributing project authors may
00008  *  be found in the AUTHORS file in the root of the source tree.
00009  */
00010 
00011 
00012 /* This is a simple program that encodes YV12 files and generates ivf
00013  * files using the new interface.
00014  */
00015 #if defined(_WIN32) || !CONFIG_OS_SUPPORT
00016 #define USE_POSIX_MMAP 0
00017 #else
00018 #define USE_POSIX_MMAP 1
00019 #endif
00020 
00021 #include <stdio.h>
00022 #include <stdlib.h>
00023 #include <stdarg.h>
00024 #include <string.h>
00025 #include <limits.h>
00026 #include <assert.h>
00027 #include "vpx/vpx_encoder.h"
00028 #if USE_POSIX_MMAP
00029 #include <sys/types.h>
00030 #include <sys/stat.h>
00031 #include <sys/mman.h>
00032 #include <fcntl.h>
00033 #include <unistd.h>
00034 #endif
00035 #include "vpx_version.h"
00036 #include "vpx/vp8cx.h"
00037 #include "vpx_ports/mem_ops.h"
00038 #include "vpx_ports/vpx_timer.h"
00039 #include "tools_common.h"
00040 #include "y4minput.h"
00041 #include "libmkv/EbmlWriter.h"
00042 #include "libmkv/EbmlIDs.h"
00043 
00044 /* Need special handling of these functions on Windows */
00045 #if defined(_MSC_VER)
00046 /* MSVS doesn't define off_t, and uses _f{seek,tell}i64 */
00047 typedef __int64 off_t;
00048 #define fseeko _fseeki64
00049 #define ftello _ftelli64
00050 #elif defined(_WIN32)
00051 /* MinGW defines off_t, and uses f{seek,tell}o64 */
00052 #define fseeko fseeko64
00053 #define ftello ftello64
00054 #endif
00055 
00056 #if defined(_MSC_VER)
00057 #define LITERALU64(n) n
00058 #else
00059 #define LITERALU64(n) n##LLU
00060 #endif
00061 
00062 /* We should use 32-bit file operations in WebM file format
00063  * when building ARM executable file (.axf) with RVCT */
00064 #if !CONFIG_OS_SUPPORT
00065 typedef long off_t;
00066 #define fseeko fseek
00067 #define ftello ftell
00068 #endif
00069 
00070 static const char *exec_name;
00071 
00072 static const struct codec_item
00073 {
00074     char const              *name;
00075     const vpx_codec_iface_t *iface;
00076     unsigned int             fourcc;
00077 } codecs[] =
00078 {
00079 #if CONFIG_VP8_ENCODER
00080     {"vp8",  &vpx_codec_vp8_cx_algo, 0x30385056},
00081 #endif
00082 };
00083 
00084 static void usage_exit();
00085 
00086 void die(const char *fmt, ...)
00087 {
00088     va_list ap;
00089     va_start(ap, fmt);
00090     vfprintf(stderr, fmt, ap);
00091     fprintf(stderr, "\n");
00092     usage_exit();
00093 }
00094 
00095 static void ctx_exit_on_error(vpx_codec_ctx_t *ctx, const char *s)
00096 {
00097     if (ctx->err)
00098     {
00099         const char *detail = vpx_codec_error_detail(ctx);
00100 
00101         fprintf(stderr, "%s: %s\n", s, vpx_codec_error(ctx));
00102 
00103         if (detail)
00104             fprintf(stderr, "    %s\n", detail);
00105 
00106         exit(EXIT_FAILURE);
00107     }
00108 }
00109 
00110 /* This structure is used to abstract the different ways of handling
00111  * first pass statistics.
00112  */
00113 typedef struct
00114 {
00115     vpx_fixed_buf_t buf;
00116     int             pass;
00117     FILE           *file;
00118     char           *buf_ptr;
00119     size_t          buf_alloc_sz;
00120 } stats_io_t;
00121 
00122 int stats_open_file(stats_io_t *stats, const char *fpf, int pass)
00123 {
00124     int res;
00125 
00126     stats->pass = pass;
00127 
00128     if (pass == 0)
00129     {
00130         stats->file = fopen(fpf, "wb");
00131         stats->buf.sz = 0;
00132         stats->buf.buf = NULL,
00133                    res = (stats->file != NULL);
00134     }
00135     else
00136     {
00137 #if 0
00138 #elif USE_POSIX_MMAP
00139         struct stat stat_buf;
00140         int fd;
00141 
00142         fd = open(fpf, O_RDONLY);
00143         stats->file = fdopen(fd, "rb");
00144         fstat(fd, &stat_buf);
00145         stats->buf.sz = stat_buf.st_size;
00146         stats->buf.buf = mmap(NULL, stats->buf.sz, PROT_READ, MAP_PRIVATE,
00147                               fd, 0);
00148         res = (stats->buf.buf != NULL);
00149 #else
00150         size_t nbytes;
00151 
00152         stats->file = fopen(fpf, "rb");
00153 
00154         if (fseek(stats->file, 0, SEEK_END))
00155         {
00156             fprintf(stderr, "First-pass stats file must be seekable!\n");
00157             exit(EXIT_FAILURE);
00158         }
00159 
00160         stats->buf.sz = stats->buf_alloc_sz = ftell(stats->file);
00161         rewind(stats->file);
00162 
00163         stats->buf.buf = malloc(stats->buf_alloc_sz);
00164 
00165         if (!stats->buf.buf)
00166         {
00167             fprintf(stderr, "Failed to allocate first-pass stats buffer (%lu bytes)\n",
00168                     (unsigned long)stats->buf_alloc_sz);
00169             exit(EXIT_FAILURE);
00170         }
00171 
00172         nbytes = fread(stats->buf.buf, 1, stats->buf.sz, stats->file);
00173         res = (nbytes == stats->buf.sz);
00174 #endif
00175     }
00176 
00177     return res;
00178 }
00179 
00180 int stats_open_mem(stats_io_t *stats, int pass)
00181 {
00182     int res;
00183     stats->pass = pass;
00184 
00185     if (!pass)
00186     {
00187         stats->buf.sz = 0;
00188         stats->buf_alloc_sz = 64 * 1024;
00189         stats->buf.buf = malloc(stats->buf_alloc_sz);
00190     }
00191 
00192     stats->buf_ptr = stats->buf.buf;
00193     res = (stats->buf.buf != NULL);
00194     return res;
00195 }
00196 
00197 
00198 void stats_close(stats_io_t *stats, int last_pass)
00199 {
00200     if (stats->file)
00201     {
00202         if (stats->pass == last_pass)
00203         {
00204 #if 0
00205 #elif USE_POSIX_MMAP
00206             munmap(stats->buf.buf, stats->buf.sz);
00207 #else
00208             free(stats->buf.buf);
00209 #endif
00210         }
00211 
00212         fclose(stats->file);
00213         stats->file = NULL;
00214     }
00215     else
00216     {
00217         if (stats->pass == last_pass)
00218             free(stats->buf.buf);
00219     }
00220 }
00221 
00222 void stats_write(stats_io_t *stats, const void *pkt, size_t len)
00223 {
00224     if (stats->file)
00225     {
00226         if(fwrite(pkt, 1, len, stats->file));
00227     }
00228     else
00229     {
00230         if (stats->buf.sz + len > stats->buf_alloc_sz)
00231         {
00232             size_t  new_sz = stats->buf_alloc_sz + 64 * 1024;
00233             char   *new_ptr = realloc(stats->buf.buf, new_sz);
00234 
00235             if (new_ptr)
00236             {
00237                 stats->buf_ptr = new_ptr + (stats->buf_ptr - (char *)stats->buf.buf);
00238                 stats->buf.buf = new_ptr;
00239                 stats->buf_alloc_sz = new_sz;
00240             }
00241             else
00242             {
00243                 fprintf(stderr,
00244                         "\nFailed to realloc firstpass stats buffer.\n");
00245                 exit(EXIT_FAILURE);
00246             }
00247         }
00248 
00249         memcpy(stats->buf_ptr, pkt, len);
00250         stats->buf.sz += len;
00251         stats->buf_ptr += len;
00252     }
00253 }
00254 
00255 vpx_fixed_buf_t stats_get(stats_io_t *stats)
00256 {
00257     return stats->buf;
00258 }
00259 
00260 /* Stereo 3D packed frame format */
00261 typedef enum stereo_format
00262 {
00263     STEREO_FORMAT_MONO       = 0,
00264     STEREO_FORMAT_LEFT_RIGHT = 1,
00265     STEREO_FORMAT_BOTTOM_TOP = 2,
00266     STEREO_FORMAT_TOP_BOTTOM = 3,
00267     STEREO_FORMAT_RIGHT_LEFT = 11
00268 } stereo_format_t;
00269 
00270 enum video_file_type
00271 {
00272     FILE_TYPE_RAW,
00273     FILE_TYPE_IVF,
00274     FILE_TYPE_Y4M
00275 };
00276 
00277 struct detect_buffer {
00278     char buf[4];
00279     size_t buf_read;
00280     size_t position;
00281 };
00282 
00283 
00284 #define IVF_FRAME_HDR_SZ (4+8) /* 4 byte size + 8 byte timestamp */
00285 static int read_frame(FILE *f, vpx_image_t *img, unsigned int file_type,
00286                       y4m_input *y4m, struct detect_buffer *detect)
00287 {
00288     int plane = 0;
00289     int shortread = 0;
00290 
00291     if (file_type == FILE_TYPE_Y4M)
00292     {
00293         if (y4m_input_fetch_frame(y4m, f, img) < 1)
00294            return 0;
00295     }
00296     else
00297     {
00298         if (file_type == FILE_TYPE_IVF)
00299         {
00300             char junk[IVF_FRAME_HDR_SZ];
00301 
00302             /* Skip the frame header. We know how big the frame should be. See
00303              * write_ivf_frame_header() for documentation on the frame header
00304              * layout.
00305              */
00306             if(fread(junk, 1, IVF_FRAME_HDR_SZ, f));
00307         }
00308 
00309         for (plane = 0; plane < 3; plane++)
00310         {
00311             unsigned char *ptr;
00312             int w = (plane ? (1 + img->d_w) / 2 : img->d_w);
00313             int h = (plane ? (1 + img->d_h) / 2 : img->d_h);
00314             int r;
00315 
00316             /* Determine the correct plane based on the image format. The for-loop
00317              * always counts in Y,U,V order, but this may not match the order of
00318              * the data on disk.
00319              */
00320             switch (plane)
00321             {
00322             case 1:
00323                 ptr = img->planes[img->fmt==VPX_IMG_FMT_YV12? VPX_PLANE_V : VPX_PLANE_U];
00324                 break;
00325             case 2:
00326                 ptr = img->planes[img->fmt==VPX_IMG_FMT_YV12?VPX_PLANE_U : VPX_PLANE_V];
00327                 break;
00328             default:
00329                 ptr = img->planes[plane];
00330             }
00331 
00332             for (r = 0; r < h; r++)
00333             {
00334                 size_t needed = w;
00335                 size_t buf_position = 0;
00336                 const size_t left = detect->buf_read - detect->position;
00337                 if (left > 0)
00338                 {
00339                     const size_t more = (left < needed) ? left : needed;
00340                     memcpy(ptr, detect->buf + detect->position, more);
00341                     buf_position = more;
00342                     needed -= more;
00343                     detect->position += more;
00344                 }
00345                 if (needed > 0)
00346                 {
00347                     shortread |= (fread(ptr + buf_position, 1, needed, f) < needed);
00348                 }
00349 
00350                 ptr += img->stride[plane];
00351             }
00352         }
00353     }
00354 
00355     return !shortread;
00356 }
00357 
00358 
00359 unsigned int file_is_y4m(FILE      *infile,
00360                          y4m_input *y4m,
00361                          char       detect[4])
00362 {
00363     if(memcmp(detect, "YUV4", 4) == 0)
00364     {
00365         return 1;
00366     }
00367     return 0;
00368 }
00369 
00370 #define IVF_FILE_HDR_SZ (32)
00371 unsigned int file_is_ivf(FILE *infile,
00372                          unsigned int *fourcc,
00373                          unsigned int *width,
00374                          unsigned int *height,
00375                          struct detect_buffer *detect)
00376 {
00377     char raw_hdr[IVF_FILE_HDR_SZ];
00378     int is_ivf = 0;
00379 
00380     if(memcmp(detect->buf, "DKIF", 4) != 0)
00381         return 0;
00382 
00383     /* See write_ivf_file_header() for more documentation on the file header
00384      * layout.
00385      */
00386     if (fread(raw_hdr + 4, 1, IVF_FILE_HDR_SZ - 4, infile)
00387         == IVF_FILE_HDR_SZ - 4)
00388     {
00389         {
00390             is_ivf = 1;
00391 
00392             if (mem_get_le16(raw_hdr + 4) != 0)
00393                 fprintf(stderr, "Error: Unrecognized IVF version! This file may not"
00394                         " decode properly.");
00395 
00396             *fourcc = mem_get_le32(raw_hdr + 8);
00397         }
00398     }
00399 
00400     if (is_ivf)
00401     {
00402         *width = mem_get_le16(raw_hdr + 12);
00403         *height = mem_get_le16(raw_hdr + 14);
00404         detect->position = 4;
00405     }
00406 
00407     return is_ivf;
00408 }
00409 
00410 
00411 static void write_ivf_file_header(FILE *outfile,
00412                                   const vpx_codec_enc_cfg_t *cfg,
00413                                   unsigned int fourcc,
00414                                   int frame_cnt)
00415 {
00416     char header[32];
00417 
00418     if (cfg->g_pass != VPX_RC_ONE_PASS && cfg->g_pass != VPX_RC_LAST_PASS)
00419         return;
00420 
00421     header[0] = 'D';
00422     header[1] = 'K';
00423     header[2] = 'I';
00424     header[3] = 'F';
00425     mem_put_le16(header + 4,  0);                 /* version */
00426     mem_put_le16(header + 6,  32);                /* headersize */
00427     mem_put_le32(header + 8,  fourcc);            /* headersize */
00428     mem_put_le16(header + 12, cfg->g_w);          /* width */
00429     mem_put_le16(header + 14, cfg->g_h);          /* height */
00430     mem_put_le32(header + 16, cfg->g_timebase.den); /* rate */
00431     mem_put_le32(header + 20, cfg->g_timebase.num); /* scale */
00432     mem_put_le32(header + 24, frame_cnt);         /* length */
00433     mem_put_le32(header + 28, 0);                 /* unused */
00434 
00435     if(fwrite(header, 1, 32, outfile));
00436 }
00437 
00438 
00439 static void write_ivf_frame_header(FILE *outfile,
00440                                    const vpx_codec_cx_pkt_t *pkt)
00441 {
00442     char             header[12];
00443     vpx_codec_pts_t  pts;
00444 
00445     if (pkt->kind != VPX_CODEC_CX_FRAME_PKT)
00446         return;
00447 
00448     pts = pkt->data.frame.pts;
00449     mem_put_le32(header, pkt->data.frame.sz);
00450     mem_put_le32(header + 4, pts & 0xFFFFFFFF);
00451     mem_put_le32(header + 8, pts >> 32);
00452 
00453     if(fwrite(header, 1, 12, outfile));
00454 }
00455 
00456 
00457 typedef off_t EbmlLoc;
00458 
00459 
00460 struct cue_entry
00461 {
00462     unsigned int time;
00463     uint64_t     loc;
00464 };
00465 
00466 
00467 struct EbmlGlobal
00468 {
00469     int debug;
00470 
00471     FILE    *stream;
00472     int64_t last_pts_ms;
00473     vpx_rational_t  framerate;
00474 
00475     /* These pointers are to the start of an element */
00476     off_t    position_reference;
00477     off_t    seek_info_pos;
00478     off_t    segment_info_pos;
00479     off_t    track_pos;
00480     off_t    cue_pos;
00481     off_t    cluster_pos;
00482 
00483     /* This pointer is to a specific element to be serialized */
00484     off_t    track_id_pos;
00485 
00486     /* These pointers are to the size field of the element */
00487     EbmlLoc  startSegment;
00488     EbmlLoc  startCluster;
00489 
00490     uint32_t cluster_timecode;
00491     int      cluster_open;
00492 
00493     struct cue_entry *cue_list;
00494     unsigned int      cues;
00495 
00496 };
00497 
00498 
00499 void Ebml_Write(EbmlGlobal *glob, const void *buffer_in, unsigned long len)
00500 {
00501     if(fwrite(buffer_in, 1, len, glob->stream));
00502 }
00503 
00504 #define WRITE_BUFFER(s) \
00505 for(i = len-1; i>=0; i--)\
00506 { \
00507     x = *(const s *)buffer_in >> (i * CHAR_BIT); \
00508     Ebml_Write(glob, &x, 1); \
00509 }
00510 void Ebml_Serialize(EbmlGlobal *glob, const void *buffer_in, int buffer_size, unsigned long len)
00511 {
00512     char x;
00513     int i;
00514 
00515     /* buffer_size:
00516      * 1 - int8_t;
00517      * 2 - int16_t;
00518      * 3 - int32_t;
00519      * 4 - int64_t;
00520      */
00521     switch (buffer_size)
00522     {
00523         case 1:
00524             WRITE_BUFFER(int8_t)
00525             break;
00526         case 2:
00527             WRITE_BUFFER(int16_t)
00528             break;
00529         case 4:
00530             WRITE_BUFFER(int32_t)
00531             break;
00532         case 8:
00533             WRITE_BUFFER(int64_t)
00534             break;
00535         default:
00536             break;
00537     }
00538 }
00539 #undef WRITE_BUFFER
00540 
00541 /* Need a fixed size serializer for the track ID. libmkv provides a 64 bit
00542  * one, but not a 32 bit one.
00543  */
00544 static void Ebml_SerializeUnsigned32(EbmlGlobal *glob, unsigned long class_id, uint64_t ui)
00545 {
00546     unsigned char sizeSerialized = 4 | 0x80;
00547     Ebml_WriteID(glob, class_id);
00548     Ebml_Serialize(glob, &sizeSerialized, sizeof(sizeSerialized), 1);
00549     Ebml_Serialize(glob, &ui, sizeof(ui), 4);
00550 }
00551 
00552 
00553 static void
00554 Ebml_StartSubElement(EbmlGlobal *glob, EbmlLoc *ebmlLoc,
00555                           unsigned long class_id)
00556 {
00557     //todo this is always taking 8 bytes, this may need later optimization
00558     //this is a key that says length unknown
00559     uint64_t unknownLen =  LITERALU64(0x01FFFFFFFFFFFFFF);
00560 
00561     Ebml_WriteID(glob, class_id);
00562     *ebmlLoc = ftello(glob->stream);
00563     Ebml_Serialize(glob, &unknownLen, sizeof(unknownLen), 8);
00564 }
00565 
00566 static void
00567 Ebml_EndSubElement(EbmlGlobal *glob, EbmlLoc *ebmlLoc)
00568 {
00569     off_t pos;
00570     uint64_t size;
00571 
00572     /* Save the current stream pointer */
00573     pos = ftello(glob->stream);
00574 
00575     /* Calculate the size of this element */
00576     size = pos - *ebmlLoc - 8;
00577     size |=  LITERALU64(0x0100000000000000);
00578 
00579     /* Seek back to the beginning of the element and write the new size */
00580     fseeko(glob->stream, *ebmlLoc, SEEK_SET);
00581     Ebml_Serialize(glob, &size, sizeof(size), 8);
00582 
00583     /* Reset the stream pointer */
00584     fseeko(glob->stream, pos, SEEK_SET);
00585 }
00586 
00587 
00588 static void
00589 write_webm_seek_element(EbmlGlobal *ebml, unsigned long id, off_t pos)
00590 {
00591     uint64_t offset = pos - ebml->position_reference;
00592     EbmlLoc start;
00593     Ebml_StartSubElement(ebml, &start, Seek);
00594     Ebml_SerializeBinary(ebml, SeekID, id);
00595     Ebml_SerializeUnsigned64(ebml, SeekPosition, offset);
00596     Ebml_EndSubElement(ebml, &start);
00597 }
00598 
00599 
00600 static void
00601 write_webm_seek_info(EbmlGlobal *ebml)
00602 {
00603 
00604     off_t pos;
00605 
00606     /* Save the current stream pointer */
00607     pos = ftello(ebml->stream);
00608 
00609     if(ebml->seek_info_pos)
00610         fseeko(ebml->stream, ebml->seek_info_pos, SEEK_SET);
00611     else
00612         ebml->seek_info_pos = pos;
00613 
00614     {
00615         EbmlLoc start;
00616 
00617         Ebml_StartSubElement(ebml, &start, SeekHead);
00618         write_webm_seek_element(ebml, Tracks, ebml->track_pos);
00619         write_webm_seek_element(ebml, Cues,   ebml->cue_pos);
00620         write_webm_seek_element(ebml, Info,   ebml->segment_info_pos);
00621         Ebml_EndSubElement(ebml, &start);
00622     }
00623     {
00624         //segment info
00625         EbmlLoc startInfo;
00626         uint64_t frame_time;
00627 
00628         frame_time = (uint64_t)1000 * ebml->framerate.den
00629                      / ebml->framerate.num;
00630         ebml->segment_info_pos = ftello(ebml->stream);
00631         Ebml_StartSubElement(ebml, &startInfo, Info);
00632         Ebml_SerializeUnsigned(ebml, TimecodeScale, 1000000);
00633         Ebml_SerializeFloat(ebml, Segment_Duration,
00634                             ebml->last_pts_ms + frame_time);
00635         Ebml_SerializeString(ebml, 0x4D80,
00636             ebml->debug ? "vpxenc" : "vpxenc" VERSION_STRING);
00637         Ebml_SerializeString(ebml, 0x5741,
00638             ebml->debug ? "vpxenc" : "vpxenc" VERSION_STRING);
00639         Ebml_EndSubElement(ebml, &startInfo);
00640     }
00641 }
00642 
00643 
00644 static void
00645 write_webm_file_header(EbmlGlobal                *glob,
00646                        const vpx_codec_enc_cfg_t *cfg,
00647                        const struct vpx_rational *fps,
00648                        stereo_format_t            stereo_fmt)
00649 {
00650     {
00651         EbmlLoc start;
00652         Ebml_StartSubElement(glob, &start, EBML);
00653         Ebml_SerializeUnsigned(glob, EBMLVersion, 1);
00654         Ebml_SerializeUnsigned(glob, EBMLReadVersion, 1); //EBML Read Version
00655         Ebml_SerializeUnsigned(glob, EBMLMaxIDLength, 4); //EBML Max ID Length
00656         Ebml_SerializeUnsigned(glob, EBMLMaxSizeLength, 8); //EBML Max Size Length
00657         Ebml_SerializeString(glob, DocType, "webm"); //Doc Type
00658         Ebml_SerializeUnsigned(glob, DocTypeVersion, 2); //Doc Type Version
00659         Ebml_SerializeUnsigned(glob, DocTypeReadVersion, 2); //Doc Type Read Version
00660         Ebml_EndSubElement(glob, &start);
00661     }
00662     {
00663         Ebml_StartSubElement(glob, &glob->startSegment, Segment); //segment
00664         glob->position_reference = ftello(glob->stream);
00665         glob->framerate = *fps;
00666         write_webm_seek_info(glob);
00667 
00668         {
00669             EbmlLoc trackStart;
00670             glob->track_pos = ftello(glob->stream);
00671             Ebml_StartSubElement(glob, &trackStart, Tracks);
00672             {
00673                 unsigned int trackNumber = 1;
00674                 uint64_t     trackID = 0;
00675 
00676                 EbmlLoc start;
00677                 Ebml_StartSubElement(glob, &start, TrackEntry);
00678                 Ebml_SerializeUnsigned(glob, TrackNumber, trackNumber);
00679                 glob->track_id_pos = ftello(glob->stream);
00680                 Ebml_SerializeUnsigned32(glob, TrackUID, trackID);
00681                 Ebml_SerializeUnsigned(glob, TrackType, 1); //video is always 1
00682                 Ebml_SerializeString(glob, CodecID, "V_VP8");
00683                 {
00684                     unsigned int pixelWidth = cfg->g_w;
00685                     unsigned int pixelHeight = cfg->g_h;
00686                     float        frameRate   = (float)fps->num/(float)fps->den;
00687 
00688                     EbmlLoc videoStart;
00689                     Ebml_StartSubElement(glob, &videoStart, Video);
00690                     Ebml_SerializeUnsigned(glob, PixelWidth, pixelWidth);
00691                     Ebml_SerializeUnsigned(glob, PixelHeight, pixelHeight);
00692                     Ebml_SerializeUnsigned(glob, StereoMode, stereo_fmt);
00693                     Ebml_SerializeFloat(glob, FrameRate, frameRate);
00694                     Ebml_EndSubElement(glob, &videoStart); //Video
00695                 }
00696                 Ebml_EndSubElement(glob, &start); //Track Entry
00697             }
00698             Ebml_EndSubElement(glob, &trackStart);
00699         }
00700         // segment element is open
00701     }
00702 }
00703 
00704 
00705 static void
00706 write_webm_block(EbmlGlobal                *glob,
00707                  const vpx_codec_enc_cfg_t *cfg,
00708                  const vpx_codec_cx_pkt_t  *pkt)
00709 {
00710     unsigned long  block_length;
00711     unsigned char  track_number;
00712     unsigned short block_timecode = 0;
00713     unsigned char  flags;
00714     int64_t        pts_ms;
00715     int            start_cluster = 0, is_keyframe;
00716 
00717     /* Calculate the PTS of this frame in milliseconds */
00718     pts_ms = pkt->data.frame.pts * 1000
00719              * (uint64_t)cfg->g_timebase.num / (uint64_t)cfg->g_timebase.den;
00720     if(pts_ms <= glob->last_pts_ms)
00721         pts_ms = glob->last_pts_ms + 1;
00722     glob->last_pts_ms = pts_ms;
00723 
00724     /* Calculate the relative time of this block */
00725     if(pts_ms - glob->cluster_timecode > SHRT_MAX)
00726         start_cluster = 1;
00727     else
00728         block_timecode = pts_ms - glob->cluster_timecode;
00729 
00730     is_keyframe = (pkt->data.frame.flags & VPX_FRAME_IS_KEY);
00731     if(start_cluster || is_keyframe)
00732     {
00733         if(glob->cluster_open)
00734             Ebml_EndSubElement(glob, &glob->startCluster);
00735 
00736         /* Open the new cluster */
00737         block_timecode = 0;
00738         glob->cluster_open = 1;
00739         glob->cluster_timecode = pts_ms;
00740         glob->cluster_pos = ftello(glob->stream);
00741         Ebml_StartSubElement(glob, &glob->startCluster, Cluster); //cluster
00742         Ebml_SerializeUnsigned(glob, Timecode, glob->cluster_timecode);
00743 
00744         /* Save a cue point if this is a keyframe. */
00745         if(is_keyframe)
00746         {
00747             struct cue_entry *cue, *new_cue_list;
00748 
00749             new_cue_list = realloc(glob->cue_list,
00750                                    (glob->cues+1) * sizeof(struct cue_entry));
00751             if(new_cue_list)
00752                 glob->cue_list = new_cue_list;
00753             else
00754             {
00755                 fprintf(stderr, "\nFailed to realloc cue list.\n");
00756                 exit(EXIT_FAILURE);
00757             }
00758 
00759             cue = &glob->cue_list[glob->cues];
00760             cue->time = glob->cluster_timecode;
00761             cue->loc = glob->cluster_pos;
00762             glob->cues++;
00763         }
00764     }
00765 
00766     /* Write the Simple Block */
00767     Ebml_WriteID(glob, SimpleBlock);
00768 
00769     block_length = pkt->data.frame.sz + 4;
00770     block_length |= 0x10000000;
00771     Ebml_Serialize(glob, &block_length, sizeof(block_length), 4);
00772 
00773     track_number = 1;
00774     track_number |= 0x80;
00775     Ebml_Write(glob, &track_number, 1);
00776 
00777     Ebml_Serialize(glob, &block_timecode, sizeof(block_timecode), 2);
00778 
00779     flags = 0;
00780     if(is_keyframe)
00781         flags |= 0x80;
00782     if(pkt->data.frame.flags & VPX_FRAME_IS_INVISIBLE)
00783         flags |= 0x08;
00784     Ebml_Write(glob, &flags, 1);
00785 
00786     Ebml_Write(glob, pkt->data.frame.buf, pkt->data.frame.sz);
00787 }
00788 
00789 
00790 static void
00791 write_webm_file_footer(EbmlGlobal *glob, long hash)
00792 {
00793 
00794     if(glob->cluster_open)
00795         Ebml_EndSubElement(glob, &glob->startCluster);
00796 
00797     {
00798         EbmlLoc start;
00799         int i;
00800 
00801         glob->cue_pos = ftello(glob->stream);
00802         Ebml_StartSubElement(glob, &start, Cues);
00803         for(i=0; i<glob->cues; i++)
00804         {
00805             struct cue_entry *cue = &glob->cue_list[i];
00806             EbmlLoc start;
00807 
00808             Ebml_StartSubElement(glob, &start, CuePoint);
00809             {
00810                 EbmlLoc start;
00811 
00812                 Ebml_SerializeUnsigned(glob, CueTime, cue->time);
00813 
00814                 Ebml_StartSubElement(glob, &start, CueTrackPositions);
00815                 Ebml_SerializeUnsigned(glob, CueTrack, 1);
00816                 Ebml_SerializeUnsigned64(glob, CueClusterPosition,
00817                                          cue->loc - glob->position_reference);
00818                 //Ebml_SerializeUnsigned(glob, CueBlockNumber, cue->blockNumber);
00819                 Ebml_EndSubElement(glob, &start);
00820             }
00821             Ebml_EndSubElement(glob, &start);
00822         }
00823         Ebml_EndSubElement(glob, &start);
00824     }
00825 
00826     Ebml_EndSubElement(glob, &glob->startSegment);
00827 
00828     /* Patch up the seek info block */
00829     write_webm_seek_info(glob);
00830 
00831     /* Patch up the track id */
00832     fseeko(glob->stream, glob->track_id_pos, SEEK_SET);
00833     Ebml_SerializeUnsigned32(glob, TrackUID, glob->debug ? 0xDEADBEEF : hash);
00834 
00835     fseeko(glob->stream, 0, SEEK_END);
00836 }
00837 
00838 
00839 /* Murmur hash derived from public domain reference implementation at
00840  *   http://sites.google.com/site/murmurhash/
00841  */
00842 static unsigned int murmur ( const void * key, int len, unsigned int seed )
00843 {
00844     const unsigned int m = 0x5bd1e995;
00845     const int r = 24;
00846 
00847     unsigned int h = seed ^ len;
00848 
00849     const unsigned char * data = (const unsigned char *)key;
00850 
00851     while(len >= 4)
00852     {
00853         unsigned int k;
00854 
00855         k  = data[0];
00856         k |= data[1] << 8;
00857         k |= data[2] << 16;
00858         k |= data[3] << 24;
00859 
00860         k *= m;
00861         k ^= k >> r;
00862         k *= m;
00863 
00864         h *= m;
00865         h ^= k;
00866 
00867         data += 4;
00868         len -= 4;
00869     }
00870 
00871     switch(len)
00872     {
00873     case 3: h ^= data[2] << 16;
00874     case 2: h ^= data[1] << 8;
00875     case 1: h ^= data[0];
00876             h *= m;
00877     };
00878 
00879     h ^= h >> 13;
00880     h *= m;
00881     h ^= h >> 15;
00882 
00883     return h;
00884 }
00885 
00886 #include "math.h"
00887 
00888 static double vp8_mse2psnr(double Samples, double Peak, double Mse)
00889 {
00890     double psnr;
00891 
00892     if ((double)Mse > 0.0)
00893         psnr = 10.0 * log10(Peak * Peak * Samples / Mse);
00894     else
00895         psnr = 60;      // Limit to prevent / 0
00896 
00897     if (psnr > 60)
00898         psnr = 60;
00899 
00900     return psnr;
00901 }
00902 
00903 
00904 #include "args.h"
00905 
00906 static const arg_def_t debugmode = ARG_DEF("D", "debug", 0,
00907         "Debug mode (makes output deterministic)");
00908 static const arg_def_t outputfile = ARG_DEF("o", "output", 1,
00909         "Output filename");
00910 static const arg_def_t use_yv12 = ARG_DEF(NULL, "yv12", 0,
00911                                   "Input file is YV12 ");
00912 static const arg_def_t use_i420 = ARG_DEF(NULL, "i420", 0,
00913                                   "Input file is I420 (default)");
00914 static const arg_def_t codecarg = ARG_DEF(NULL, "codec", 1,
00915                                   "Codec to use");
00916 static const arg_def_t passes           = ARG_DEF("p", "passes", 1,
00917         "Number of passes (1/2)");
00918 static const arg_def_t pass_arg         = ARG_DEF(NULL, "pass", 1,
00919         "Pass to execute (1/2)");
00920 static const arg_def_t fpf_name         = ARG_DEF(NULL, "fpf", 1,
00921         "First pass statistics file name");
00922 static const arg_def_t limit = ARG_DEF(NULL, "limit", 1,
00923                                        "Stop encoding after n input frames");
00924 static const arg_def_t deadline         = ARG_DEF("d", "deadline", 1,
00925         "Deadline per frame (usec)");
00926 static const arg_def_t best_dl          = ARG_DEF(NULL, "best", 0,
00927         "Use Best Quality Deadline");
00928 static const arg_def_t good_dl          = ARG_DEF(NULL, "good", 0,
00929         "Use Good Quality Deadline");
00930 static const arg_def_t rt_dl            = ARG_DEF(NULL, "rt", 0,
00931         "Use Realtime Quality Deadline");
00932 static const arg_def_t verbosearg       = ARG_DEF("v", "verbose", 0,
00933         "Show encoder parameters");
00934 static const arg_def_t psnrarg          = ARG_DEF(NULL, "psnr", 0,
00935         "Show PSNR in status line");
00936 static const arg_def_t framerate        = ARG_DEF(NULL, "fps", 1,
00937         "Stream frame rate (rate/scale)");
00938 static const arg_def_t use_ivf          = ARG_DEF(NULL, "ivf", 0,
00939         "Output IVF (default is WebM)");
00940 static const arg_def_t q_hist_n         = ARG_DEF(NULL, "q-hist", 1,
00941         "Show quantizer histogram (n-buckets)");
00942 static const arg_def_t rate_hist_n         = ARG_DEF(NULL, "rate-hist", 1,
00943         "Show rate histogram (n-buckets)");
00944 static const arg_def_t *main_args[] =
00945 {
00946     &debugmode,
00947     &outputfile, &codecarg, &passes, &pass_arg, &fpf_name, &limit, &deadline,
00948     &best_dl, &good_dl, &rt_dl,
00949     &verbosearg, &psnrarg, &use_ivf, &q_hist_n, &rate_hist_n,
00950     NULL
00951 };
00952 
00953 static const arg_def_t usage            = ARG_DEF("u", "usage", 1,
00954         "Usage profile number to use");
00955 static const arg_def_t threads          = ARG_DEF("t", "threads", 1,
00956         "Max number of threads to use");
00957 static const arg_def_t profile          = ARG_DEF(NULL, "profile", 1,
00958         "Bitstream profile number to use");
00959 static const arg_def_t width            = ARG_DEF("w", "width", 1,
00960         "Frame width");
00961 static const arg_def_t height           = ARG_DEF("h", "height", 1,
00962         "Frame height");
00963 static const struct arg_enum_list stereo_mode_enum[] = {
00964     {"mono"      , STEREO_FORMAT_MONO},
00965     {"left-right", STEREO_FORMAT_LEFT_RIGHT},
00966     {"bottom-top", STEREO_FORMAT_BOTTOM_TOP},
00967     {"top-bottom", STEREO_FORMAT_TOP_BOTTOM},
00968     {"right-left", STEREO_FORMAT_RIGHT_LEFT},
00969     {NULL, 0}
00970 };
00971 static const arg_def_t stereo_mode      = ARG_DEF_ENUM(NULL, "stereo-mode", 1,
00972         "Stereo 3D video format", stereo_mode_enum);
00973 static const arg_def_t timebase         = ARG_DEF(NULL, "timebase", 1,
00974         "Output timestamp precision (fractional seconds)");
00975 static const arg_def_t error_resilient  = ARG_DEF(NULL, "error-resilient", 1,
00976         "Enable error resiliency features");
00977 static const arg_def_t lag_in_frames    = ARG_DEF(NULL, "lag-in-frames", 1,
00978         "Max number of frames to lag");
00979 
00980 static const arg_def_t *global_args[] =
00981 {
00982     &use_yv12, &use_i420, &usage, &threads, &profile,
00983     &width, &height, &stereo_mode, &timebase, &framerate, &error_resilient,
00984     &lag_in_frames, NULL
00985 };
00986 
00987 static const arg_def_t dropframe_thresh   = ARG_DEF(NULL, "drop-frame", 1,
00988         "Temporal resampling threshold (buf %)");
00989 static const arg_def_t resize_allowed     = ARG_DEF(NULL, "resize-allowed", 1,
00990         "Spatial resampling enabled (bool)");
00991 static const arg_def_t resize_up_thresh   = ARG_DEF(NULL, "resize-up", 1,
00992         "Upscale threshold (buf %)");
00993 static const arg_def_t resize_down_thresh = ARG_DEF(NULL, "resize-down", 1,
00994         "Downscale threshold (buf %)");
00995 static const struct arg_enum_list end_usage_enum[] = {
00996     {"vbr", VPX_VBR},
00997     {"cbr", VPX_CBR},
00998     {"cq",  VPX_CQ},
00999     {NULL, 0}
01000 };
01001 static const arg_def_t end_usage          = ARG_DEF_ENUM(NULL, "end-usage", 1,
01002         "Rate control mode", end_usage_enum);
01003 static const arg_def_t target_bitrate     = ARG_DEF(NULL, "target-bitrate", 1,
01004         "Bitrate (kbps)");
01005 static const arg_def_t min_quantizer      = ARG_DEF(NULL, "min-q", 1,
01006         "Minimum (best) quantizer");
01007 static const arg_def_t max_quantizer      = ARG_DEF(NULL, "max-q", 1,
01008         "Maximum (worst) quantizer");
01009 static const arg_def_t undershoot_pct     = ARG_DEF(NULL, "undershoot-pct", 1,
01010         "Datarate undershoot (min) target (%)");
01011 static const arg_def_t overshoot_pct      = ARG_DEF(NULL, "overshoot-pct", 1,
01012         "Datarate overshoot (max) target (%)");
01013 static const arg_def_t buf_sz             = ARG_DEF(NULL, "buf-sz", 1,
01014         "Client buffer size (ms)");
01015 static const arg_def_t buf_initial_sz     = ARG_DEF(NULL, "buf-initial-sz", 1,
01016         "Client initial buffer size (ms)");
01017 static const arg_def_t buf_optimal_sz     = ARG_DEF(NULL, "buf-optimal-sz", 1,
01018         "Client optimal buffer size (ms)");
01019 static const arg_def_t *rc_args[] =
01020 {
01021     &dropframe_thresh, &resize_allowed, &resize_up_thresh, &resize_down_thresh,
01022     &end_usage, &target_bitrate, &min_quantizer, &max_quantizer,
01023     &undershoot_pct, &overshoot_pct, &buf_sz, &buf_initial_sz, &buf_optimal_sz,
01024     NULL
01025 };
01026 
01027 
01028 static const arg_def_t bias_pct = ARG_DEF(NULL, "bias-pct", 1,
01029                                   "CBR/VBR bias (0=CBR, 100=VBR)");
01030 static const arg_def_t minsection_pct = ARG_DEF(NULL, "minsection-pct", 1,
01031                                         "GOP min bitrate (% of target)");
01032 static const arg_def_t maxsection_pct = ARG_DEF(NULL, "maxsection-pct", 1,
01033                                         "GOP max bitrate (% of target)");
01034 static const arg_def_t *rc_twopass_args[] =
01035 {
01036     &bias_pct, &minsection_pct, &maxsection_pct, NULL
01037 };
01038 
01039 
01040 static const arg_def_t kf_min_dist = ARG_DEF(NULL, "kf-min-dist", 1,
01041                                      "Minimum keyframe interval (frames)");
01042 static const arg_def_t kf_max_dist = ARG_DEF(NULL, "kf-max-dist", 1,
01043                                      "Maximum keyframe interval (frames)");
01044 static const arg_def_t kf_disabled = ARG_DEF(NULL, "disable-kf", 0,
01045                                      "Disable keyframe placement");
01046 static const arg_def_t *kf_args[] =
01047 {
01048     &kf_min_dist, &kf_max_dist, &kf_disabled, NULL
01049 };
01050 
01051 
01052 #if CONFIG_VP8_ENCODER
01053 static const arg_def_t noise_sens = ARG_DEF(NULL, "noise-sensitivity", 1,
01054                                     "Noise sensitivity (frames to blur)");
01055 static const arg_def_t sharpness = ARG_DEF(NULL, "sharpness", 1,
01056                                    "Filter sharpness (0-7)");
01057 static const arg_def_t static_thresh = ARG_DEF(NULL, "static-thresh", 1,
01058                                        "Motion detection threshold");
01059 #endif
01060 
01061 #if CONFIG_VP8_ENCODER
01062 static const arg_def_t cpu_used = ARG_DEF(NULL, "cpu-used", 1,
01063                                   "CPU Used (-16..16)");
01064 #endif
01065 
01066 
01067 #if CONFIG_VP8_ENCODER
01068 static const arg_def_t token_parts = ARG_DEF(NULL, "token-parts", 1,
01069                                      "Number of token partitions to use, log2");
01070 static const arg_def_t auto_altref = ARG_DEF(NULL, "auto-alt-ref", 1,
01071                                      "Enable automatic alt reference frames");
01072 static const arg_def_t arnr_maxframes = ARG_DEF(NULL, "arnr-maxframes", 1,
01073                                         "AltRef Max Frames");
01074 static const arg_def_t arnr_strength = ARG_DEF(NULL, "arnr-strength", 1,
01075                                        "AltRef Strength");
01076 static const arg_def_t arnr_type = ARG_DEF(NULL, "arnr-type", 1,
01077                                    "AltRef Type");
01078 static const struct arg_enum_list tuning_enum[] = {
01079     {"psnr", VP8_TUNE_PSNR},
01080     {"ssim", VP8_TUNE_SSIM},
01081     {NULL, 0}
01082 };
01083 static const arg_def_t tune_ssim = ARG_DEF_ENUM(NULL, "tune", 1,
01084                                    "Material to favor", tuning_enum);
01085 static const arg_def_t cq_level = ARG_DEF(NULL, "cq-level", 1,
01086                                    "Constrained Quality Level");
01087 static const arg_def_t max_intra_rate_pct = ARG_DEF(NULL, "max-intra-rate", 1,
01088         "Max I-frame bitrate (pct)");
01089 
01090 static const arg_def_t *vp8_args[] =
01091 {
01092     &cpu_used, &auto_altref, &noise_sens, &sharpness, &static_thresh,
01093     &token_parts, &arnr_maxframes, &arnr_strength, &arnr_type,
01094     &tune_ssim, &cq_level, &max_intra_rate_pct, NULL
01095 };
01096 static const int vp8_arg_ctrl_map[] =
01097 {
01098     VP8E_SET_CPUUSED, VP8E_SET_ENABLEAUTOALTREF,
01099     VP8E_SET_NOISE_SENSITIVITY, VP8E_SET_SHARPNESS, VP8E_SET_STATIC_THRESHOLD,
01100     VP8E_SET_TOKEN_PARTITIONS,
01101     VP8E_SET_ARNR_MAXFRAMES, VP8E_SET_ARNR_STRENGTH , VP8E_SET_ARNR_TYPE,
01102     VP8E_SET_TUNING, VP8E_SET_CQ_LEVEL, VP8E_SET_MAX_INTRA_BITRATE_PCT, 0
01103 };
01104 #endif
01105 
01106 static const arg_def_t *no_args[] = { NULL };
01107 
01108 static void usage_exit()
01109 {
01110     int i;
01111 
01112     fprintf(stderr, "Usage: %s <options> -o dst_filename src_filename \n",
01113             exec_name);
01114 
01115     fprintf(stderr, "\nOptions:\n");
01116     arg_show_usage(stdout, main_args);
01117     fprintf(stderr, "\nEncoder Global Options:\n");
01118     arg_show_usage(stdout, global_args);
01119     fprintf(stderr, "\nRate Control Options:\n");
01120     arg_show_usage(stdout, rc_args);
01121     fprintf(stderr, "\nTwopass Rate Control Options:\n");
01122     arg_show_usage(stdout, rc_twopass_args);
01123     fprintf(stderr, "\nKeyframe Placement Options:\n");
01124     arg_show_usage(stdout, kf_args);
01125 #if CONFIG_VP8_ENCODER
01126     fprintf(stderr, "\nVP8 Specific Options:\n");
01127     arg_show_usage(stdout, vp8_args);
01128 #endif
01129     fprintf(stderr, "\nStream timebase (--timebase):\n"
01130             "  The desired precision of timestamps in the output, expressed\n"
01131             "  in fractional seconds. Default is 1/1000.\n");
01132     fprintf(stderr, "\n"
01133            "Included encoders:\n"
01134            "\n");
01135 
01136     for (i = 0; i < sizeof(codecs) / sizeof(codecs[0]); i++)
01137         fprintf(stderr, "    %-6s - %s\n",
01138                codecs[i].name,
01139                vpx_codec_iface_name(codecs[i].iface));
01140 
01141     exit(EXIT_FAILURE);
01142 }
01143 
01144 
01145 #define HIST_BAR_MAX 40
01146 struct hist_bucket
01147 {
01148     int low, high, count;
01149 };
01150 
01151 
01152 static int merge_hist_buckets(struct hist_bucket *bucket,
01153                               int *buckets_,
01154                               int max_buckets)
01155 {
01156     int small_bucket = 0, merge_bucket = INT_MAX, big_bucket=0;
01157     int buckets = *buckets_;
01158     int i;
01159 
01160     /* Find the extrema for this list of buckets */
01161     big_bucket = small_bucket = 0;
01162     for(i=0; i < buckets; i++)
01163     {
01164         if(bucket[i].count < bucket[small_bucket].count)
01165             small_bucket = i;
01166         if(bucket[i].count > bucket[big_bucket].count)
01167             big_bucket = i;
01168     }
01169 
01170     /* If we have too many buckets, merge the smallest with an adjacent
01171      * bucket.
01172      */
01173     while(buckets > max_buckets)
01174     {
01175         int last_bucket = buckets - 1;
01176 
01177         // merge the small bucket with an adjacent one.
01178         if(small_bucket == 0)
01179             merge_bucket = 1;
01180         else if(small_bucket == last_bucket)
01181             merge_bucket = last_bucket - 1;
01182         else if(bucket[small_bucket - 1].count < bucket[small_bucket + 1].count)
01183             merge_bucket = small_bucket - 1;
01184         else
01185             merge_bucket = small_bucket + 1;
01186 
01187         assert(abs(merge_bucket - small_bucket) <= 1);
01188         assert(small_bucket < buckets);
01189         assert(big_bucket < buckets);
01190         assert(merge_bucket < buckets);
01191 
01192         if(merge_bucket < small_bucket)
01193         {
01194             bucket[merge_bucket].high = bucket[small_bucket].high;
01195             bucket[merge_bucket].count += bucket[small_bucket].count;
01196         }
01197         else
01198         {
01199             bucket[small_bucket].high = bucket[merge_bucket].high;
01200             bucket[small_bucket].count += bucket[merge_bucket].count;
01201             merge_bucket = small_bucket;
01202         }
01203 
01204         assert(bucket[merge_bucket].low != bucket[merge_bucket].high);
01205 
01206         buckets--;
01207 
01208         /* Remove the merge_bucket from the list, and find the new small
01209          * and big buckets while we're at it
01210          */
01211         big_bucket = small_bucket = 0;
01212         for(i=0; i < buckets; i++)
01213         {
01214             if(i > merge_bucket)
01215                 bucket[i] = bucket[i+1];
01216 
01217             if(bucket[i].count < bucket[small_bucket].count)
01218                 small_bucket = i;
01219             if(bucket[i].count > bucket[big_bucket].count)
01220                 big_bucket = i;
01221         }
01222 
01223     }
01224 
01225     *buckets_ = buckets;
01226     return bucket[big_bucket].count;
01227 }
01228 
01229 
01230 static void show_histogram(const struct hist_bucket *bucket,
01231                            int                       buckets,
01232                            int                       total,
01233                            int                       scale)
01234 {
01235     const char *pat1, *pat2;
01236     int i;
01237 
01238     switch((int)(log(bucket[buckets-1].high)/log(10))+1)
01239     {
01240         case 1:
01241         case 2:
01242             pat1 = "%4d %2s: ";
01243             pat2 = "%4d-%2d: ";
01244             break;
01245         case 3:
01246             pat1 = "%5d %3s: ";
01247             pat2 = "%5d-%3d: ";
01248             break;
01249         case 4:
01250             pat1 = "%6d %4s: ";
01251             pat2 = "%6d-%4d: ";
01252             break;
01253         case 5:
01254             pat1 = "%7d %5s: ";
01255             pat2 = "%7d-%5d: ";
01256             break;
01257         case 6:
01258             pat1 = "%8d %6s: ";
01259             pat2 = "%8d-%6d: ";
01260             break;
01261         case 7:
01262             pat1 = "%9d %7s: ";
01263             pat2 = "%9d-%7d: ";
01264             break;
01265         default:
01266             pat1 = "%12d %10s: ";
01267             pat2 = "%12d-%10d: ";
01268             break;
01269     }
01270 
01271     for(i=0; i<buckets; i++)
01272     {
01273         int len;
01274         int j;
01275         float pct;
01276 
01277         pct = 100.0 * (float)bucket[i].count / (float)total;
01278         len = HIST_BAR_MAX * bucket[i].count / scale;
01279         if(len < 1)
01280             len = 1;
01281         assert(len <= HIST_BAR_MAX);
01282 
01283         if(bucket[i].low == bucket[i].high)
01284             fprintf(stderr, pat1, bucket[i].low, "");
01285         else
01286             fprintf(stderr, pat2, bucket[i].low, bucket[i].high);
01287 
01288         for(j=0; j<HIST_BAR_MAX; j++)
01289             fprintf(stderr, j<len?"=":" ");
01290         fprintf(stderr, "\t%5d (%6.2f%%)\n",bucket[i].count,pct);
01291     }
01292 }
01293 
01294 
01295 static void show_q_histogram(const int counts[64], int max_buckets)
01296 {
01297     struct hist_bucket bucket[64];
01298     int buckets = 0;
01299     int total = 0;
01300     int scale;
01301     int i;
01302 
01303 
01304     for(i=0; i<64; i++)
01305     {
01306         if(counts[i])
01307         {
01308             bucket[buckets].low = bucket[buckets].high = i;
01309             bucket[buckets].count = counts[i];
01310             buckets++;
01311             total += counts[i];
01312         }
01313     }
01314 
01315     fprintf(stderr, "\nQuantizer Selection:\n");
01316     scale = merge_hist_buckets(bucket, &buckets, max_buckets);
01317     show_histogram(bucket, buckets, total, scale);
01318 }
01319 
01320 
01321 #define RATE_BINS (100)
01322 struct rate_hist
01323 {
01324     int64_t            *pts;
01325     int                *sz;
01326     int                 samples;
01327     int                 frames;
01328     struct hist_bucket  bucket[RATE_BINS];
01329     int                 total;
01330 };
01331 
01332 
01333 static void init_rate_histogram(struct rate_hist          *hist,
01334                                 const vpx_codec_enc_cfg_t *cfg,
01335                                 const vpx_rational_t      *fps)
01336 {
01337     int i;
01338 
01339     /* Determine the number of samples in the buffer. Use the file's framerate
01340      * to determine the number of frames in rc_buf_sz milliseconds, with an
01341      * adjustment (5/4) to account for alt-refs
01342      */
01343     hist->samples = cfg->rc_buf_sz * 5 / 4 * fps->num / fps->den / 1000;
01344 
01345     // prevent division by zero
01346     if (hist->samples == 0)
01347       hist->samples=1;
01348 
01349     hist->pts = calloc(hist->samples, sizeof(*hist->pts));
01350     hist->sz = calloc(hist->samples, sizeof(*hist->sz));
01351     for(i=0; i<RATE_BINS; i++)
01352     {
01353         hist->bucket[i].low = INT_MAX;
01354         hist->bucket[i].high = 0;
01355         hist->bucket[i].count = 0;
01356     }
01357 }
01358 
01359 
01360 static void destroy_rate_histogram(struct rate_hist *hist)
01361 {
01362     free(hist->pts);
01363     free(hist->sz);
01364 }
01365 
01366 
01367 static void update_rate_histogram(struct rate_hist          *hist,
01368                                   const vpx_codec_enc_cfg_t *cfg,
01369                                   const vpx_codec_cx_pkt_t  *pkt)
01370 {
01371     int i, idx;
01372     int64_t now, then, sum_sz = 0, avg_bitrate;
01373 
01374     now = pkt->data.frame.pts * 1000
01375           * (uint64_t)cfg->g_timebase.num / (uint64_t)cfg->g_timebase.den;
01376 
01377     idx = hist->frames++ % hist->samples;
01378     hist->pts[idx] = now;
01379     hist->sz[idx] = pkt->data.frame.sz;
01380 
01381     if(now < cfg->rc_buf_initial_sz)
01382         return;
01383 
01384     then = now;
01385 
01386     /* Sum the size over the past rc_buf_sz ms */
01387     for(i = hist->frames; i > 0 && hist->frames - i < hist->samples; i--)
01388     {
01389         int i_idx = (i-1) % hist->samples;
01390 
01391         then = hist->pts[i_idx];
01392         if(now - then > cfg->rc_buf_sz)
01393             break;
01394         sum_sz += hist->sz[i_idx];
01395     }
01396 
01397     if (now == then)
01398         return;
01399 
01400     avg_bitrate = sum_sz * 8 * 1000 / (now - then);
01401     idx = avg_bitrate * (RATE_BINS/2) / (cfg->rc_target_bitrate * 1000);
01402     if(idx < 0)
01403         idx = 0;
01404     if(idx > RATE_BINS-1)
01405         idx = RATE_BINS-1;
01406     if(hist->bucket[idx].low > avg_bitrate)
01407         hist->bucket[idx].low = avg_bitrate;
01408     if(hist->bucket[idx].high < avg_bitrate)
01409         hist->bucket[idx].high = avg_bitrate;
01410     hist->bucket[idx].count++;
01411     hist->total++;
01412 }
01413 
01414 
01415 static void show_rate_histogram(struct rate_hist          *hist,
01416                                 const vpx_codec_enc_cfg_t *cfg,
01417                                 int                        max_buckets)
01418 {
01419     int i, scale;
01420     int buckets = 0;
01421 
01422     for(i = 0; i < RATE_BINS; i++)
01423     {
01424         if(hist->bucket[i].low == INT_MAX)
01425             continue;
01426         hist->bucket[buckets++] = hist->bucket[i];
01427     }
01428 
01429     fprintf(stderr, "\nRate (over %dms window):\n", cfg->rc_buf_sz);
01430     scale = merge_hist_buckets(hist->bucket, &buckets, max_buckets);
01431     show_histogram(hist->bucket, buckets, hist->total, scale);
01432 }
01433 
01434 #define ARG_CTRL_CNT_MAX 10
01435 
01436 int main(int argc, const char **argv_)
01437 {
01438     vpx_codec_ctx_t        encoder;
01439     const char                  *in_fn = NULL, *out_fn = NULL, *stats_fn = NULL;
01440     int                    i;
01441     FILE                  *infile, *outfile;
01442     vpx_codec_enc_cfg_t    cfg;
01443     vpx_codec_err_t        res;
01444     int                    pass, one_pass_only = 0;
01445     stats_io_t             stats;
01446     vpx_image_t            raw;
01447     const struct codec_item  *codec = codecs;
01448     int                    frame_avail, got_data;
01449 
01450     struct arg               arg;
01451     char                   **argv, **argi, **argj;
01452     int                      arg_usage = 0, arg_passes = 1, arg_deadline = 0;
01453     int                      arg_ctrls[ARG_CTRL_CNT_MAX][2], arg_ctrl_cnt = 0;
01454     int                      arg_limit = 0;
01455     static const arg_def_t **ctrl_args = no_args;
01456     static const int        *ctrl_args_map = NULL;
01457     int                      verbose = 0, show_psnr = 0;
01458     int                      arg_use_i420 = 1;
01459     unsigned long            cx_time = 0;
01460     unsigned int             file_type, fourcc;
01461     y4m_input                y4m;
01462     struct vpx_rational      arg_framerate = {30, 1};
01463     int                      arg_have_framerate = 0;
01464     int                      write_webm = 1;
01465     EbmlGlobal               ebml = {0};
01466     uint32_t                 hash = 0;
01467     uint64_t                 psnr_sse_total = 0;
01468     uint64_t                 psnr_samples_total = 0;
01469     double                   psnr_totals[4] = {0, 0, 0, 0};
01470     int                      psnr_count = 0;
01471     stereo_format_t          stereo_fmt = STEREO_FORMAT_MONO;
01472     int                      counts[64]={0};
01473     int                      show_q_hist_buckets=0;
01474     int                      show_rate_hist_buckets=0;
01475     struct rate_hist         rate_hist={0};
01476 
01477     exec_name = argv_[0];
01478     ebml.last_pts_ms = -1;
01479 
01480     if (argc < 3)
01481         usage_exit();
01482 
01483 
01484     /* First parse the codec and usage values, because we want to apply other
01485      * parameters on top of the default configuration provided by the codec.
01486      */
01487     argv = argv_dup(argc - 1, argv_ + 1);
01488 
01489     for (argi = argj = argv; (*argj = *argi); argi += arg.argv_step)
01490     {
01491         arg.argv_step = 1;
01492 
01493         if (arg_match(&arg, &codecarg, argi))
01494         {
01495             int j, k = -1;
01496 
01497             for (j = 0; j < sizeof(codecs) / sizeof(codecs[0]); j++)
01498                 if (!strcmp(codecs[j].name, arg.val))
01499                     k = j;
01500 
01501             if (k >= 0)
01502                 codec = codecs + k;
01503             else
01504                 die("Error: Unrecognized argument (%s) to --codec\n",
01505                     arg.val);
01506 
01507         }
01508         else if (arg_match(&arg, &passes, argi))
01509         {
01510             arg_passes = arg_parse_uint(&arg);
01511 
01512             if (arg_passes < 1 || arg_passes > 2)
01513                 die("Error: Invalid number of passes (%d)\n", arg_passes);
01514         }
01515         else if (arg_match(&arg, &pass_arg, argi))
01516         {
01517             one_pass_only = arg_parse_uint(&arg);
01518 
01519             if (one_pass_only < 1 || one_pass_only > 2)
01520                 die("Error: Invalid pass selected (%d)\n", one_pass_only);
01521         }
01522         else if (arg_match(&arg, &fpf_name, argi))
01523             stats_fn = arg.val;
01524         else if (arg_match(&arg, &usage, argi))
01525             arg_usage = arg_parse_uint(&arg);
01526         else if (arg_match(&arg, &deadline, argi))
01527             arg_deadline = arg_parse_uint(&arg);
01528         else if (arg_match(&arg, &best_dl, argi))
01529             arg_deadline = VPX_DL_BEST_QUALITY;
01530         else if (arg_match(&arg, &good_dl, argi))
01531             arg_deadline = VPX_DL_GOOD_QUALITY;
01532         else if (arg_match(&arg, &rt_dl, argi))
01533             arg_deadline = VPX_DL_REALTIME;
01534         else if (arg_match(&arg, &use_yv12, argi))
01535         {
01536             arg_use_i420 = 0;
01537         }
01538         else if (arg_match(&arg, &use_i420, argi))
01539         {
01540             arg_use_i420 = 1;
01541         }
01542         else if (arg_match(&arg, &verbosearg, argi))
01543             verbose = 1;
01544         else if (arg_match(&arg, &limit, argi))
01545             arg_limit = arg_parse_uint(&arg);
01546         else if (arg_match(&arg, &psnrarg, argi))
01547             show_psnr = 1;
01548         else if (arg_match(&arg, &framerate, argi))
01549         {
01550             arg_framerate = arg_parse_rational(&arg);
01551             arg_have_framerate = 1;
01552         }
01553         else if (arg_match(&arg, &use_ivf, argi))
01554             write_webm = 0;
01555         else if (arg_match(&arg, &outputfile, argi))
01556             out_fn = arg.val;
01557         else if (arg_match(&arg, &debugmode, argi))
01558             ebml.debug = 1;
01559         else if (arg_match(&arg, &q_hist_n, argi))
01560             show_q_hist_buckets = arg_parse_uint(&arg);
01561         else if (arg_match(&arg, &rate_hist_n, argi))
01562             show_rate_hist_buckets = arg_parse_uint(&arg);
01563         else
01564             argj++;
01565     }
01566 
01567     /* Ensure that --passes and --pass are consistent. If --pass is set and --passes=2,
01568      * ensure --fpf was set.
01569      */
01570     if (one_pass_only)
01571     {
01572         /* DWIM: Assume the user meant passes=2 if pass=2 is specified */
01573         if (one_pass_only > arg_passes)
01574         {
01575             fprintf(stderr, "Warning: Assuming --pass=%d implies --passes=%d\n",
01576                    one_pass_only, one_pass_only);
01577             arg_passes = one_pass_only;
01578         }
01579 
01580         if (arg_passes == 2 && !stats_fn)
01581             die("Must specify --fpf when --pass=%d and --passes=2\n", one_pass_only);
01582     }
01583 
01584     /* Populate encoder configuration */
01585     res = vpx_codec_enc_config_default(codec->iface, &cfg, arg_usage);
01586 
01587     if (res)
01588     {
01589         fprintf(stderr, "Failed to get config: %s\n",
01590                 vpx_codec_err_to_string(res));
01591         return EXIT_FAILURE;
01592     }
01593 
01594     /* Change the default timebase to a high enough value so that the encoder
01595      * will always create strictly increasing timestamps.
01596      */
01597     cfg.g_timebase.den = 1000;
01598 
01599     /* Never use the library's default resolution, require it be parsed
01600      * from the file or set on the command line.
01601      */
01602     cfg.g_w = 0;
01603     cfg.g_h = 0;
01604 
01605     /* Now parse the remainder of the parameters. */
01606     for (argi = argj = argv; (*argj = *argi); argi += arg.argv_step)
01607     {
01608         arg.argv_step = 1;
01609 
01610         if (0);
01611         else if (arg_match(&arg, &threads, argi))
01612             cfg.g_threads = arg_parse_uint(&arg);
01613         else if (arg_match(&arg, &profile, argi))
01614             cfg.g_profile = arg_parse_uint(&arg);
01615         else if (arg_match(&arg, &width, argi))
01616             cfg.g_w = arg_parse_uint(&arg);
01617         else if (arg_match(&arg, &height, argi))
01618             cfg.g_h = arg_parse_uint(&arg);
01619         else if (arg_match(&arg, &stereo_mode, argi))
01620             stereo_fmt = arg_parse_enum_or_int(&arg);
01621         else if (arg_match(&arg, &timebase, argi))
01622             cfg.g_timebase = arg_parse_rational(&arg);
01623         else if (arg_match(&arg, &error_resilient, argi))
01624             cfg.g_error_resilient = arg_parse_uint(&arg);
01625         else if (arg_match(&arg, &lag_in_frames, argi))
01626             cfg.g_lag_in_frames = arg_parse_uint(&arg);
01627         else if (arg_match(&arg, &dropframe_thresh, argi))
01628             cfg.rc_dropframe_thresh = arg_parse_uint(&arg);
01629         else if (arg_match(&arg, &resize_allowed, argi))
01630             cfg.rc_resize_allowed = arg_parse_uint(&arg);
01631         else if (arg_match(&arg, &resize_up_thresh, argi))
01632             cfg.rc_resize_up_thresh = arg_parse_uint(&arg);
01633         else if (arg_match(&arg, &resize_down_thresh, argi))
01634             cfg.rc_resize_down_thresh = arg_parse_uint(&arg);
01635         else if (arg_match(&arg, &resize_down_thresh, argi))
01636             cfg.rc_resize_down_thresh = arg_parse_uint(&arg);
01637         else if (arg_match(&arg, &end_usage, argi))
01638             cfg.rc_end_usage = arg_parse_enum_or_int(&arg);
01639         else if (arg_match(&arg, &target_bitrate, argi))
01640             cfg.rc_target_bitrate = arg_parse_uint(&arg);
01641         else if (arg_match(&arg, &min_quantizer, argi))
01642             cfg.rc_min_quantizer = arg_parse_uint(&arg);
01643         else if (arg_match(&arg, &max_quantizer, argi))
01644             cfg.rc_max_quantizer = arg_parse_uint(&arg);
01645         else if (arg_match(&arg, &undershoot_pct, argi))
01646             cfg.rc_undershoot_pct = arg_parse_uint(&arg);
01647         else if (arg_match(&arg, &overshoot_pct, argi))
01648             cfg.rc_overshoot_pct = arg_parse_uint(&arg);
01649         else if (arg_match(&arg, &buf_sz, argi))
01650             cfg.rc_buf_sz = arg_parse_uint(&arg);
01651         else if (arg_match(&arg, &buf_initial_sz, argi))
01652             cfg.rc_buf_initial_sz = arg_parse_uint(&arg);
01653         else if (arg_match(&arg, &buf_optimal_sz, argi))
01654             cfg.rc_buf_optimal_sz = arg_parse_uint(&arg);
01655         else if (arg_match(&arg, &bias_pct, argi))
01656         {
01657             cfg.rc_2pass_vbr_bias_pct = arg_parse_uint(&arg);
01658 
01659             if (arg_passes < 2)
01660                 fprintf(stderr,
01661                         "Warning: option %s ignored in one-pass mode.\n",
01662                         arg.name);
01663         }
01664         else if (arg_match(&arg, &minsection_pct, argi))
01665         {
01666             cfg.rc_2pass_vbr_minsection_pct = arg_parse_uint(&arg);
01667 
01668             if (arg_passes < 2)
01669                 fprintf(stderr,
01670                         "Warning: option %s ignored in one-pass mode.\n",
01671                         arg.name);
01672         }
01673         else if (arg_match(&arg, &maxsection_pct, argi))
01674         {
01675             cfg.rc_2pass_vbr_maxsection_pct = arg_parse_uint(&arg);
01676 
01677             if (arg_passes < 2)
01678                 fprintf(stderr,
01679                         "Warning: option %s ignored in one-pass mode.\n",
01680                         arg.name);
01681         }
01682         else if (arg_match(&arg, &kf_min_dist, argi))
01683             cfg.kf_min_dist = arg_parse_uint(&arg);
01684         else if (arg_match(&arg, &kf_max_dist, argi))
01685             cfg.kf_max_dist = arg_parse_uint(&arg);
01686         else if (arg_match(&arg, &kf_disabled, argi))
01687             cfg.kf_mode = VPX_KF_DISABLED;
01688         else
01689             argj++;
01690     }
01691 
01692     /* Handle codec specific options */
01693 #if CONFIG_VP8_ENCODER
01694 
01695     if (codec->iface == &vpx_codec_vp8_cx_algo)
01696     {
01697         ctrl_args = vp8_args;
01698         ctrl_args_map = vp8_arg_ctrl_map;
01699     }
01700 
01701 #endif
01702 
01703     for (argi = argj = argv; (*argj = *argi); argi += arg.argv_step)
01704     {
01705         int match = 0;
01706 
01707         arg.argv_step = 1;
01708 
01709         for (i = 0; ctrl_args[i]; i++)
01710         {
01711             if (arg_match(&arg, ctrl_args[i], argi))
01712             {
01713                 match = 1;
01714 
01715                 if (arg_ctrl_cnt < ARG_CTRL_CNT_MAX)
01716                 {
01717                     arg_ctrls[arg_ctrl_cnt][0] = ctrl_args_map[i];
01718                     arg_ctrls[arg_ctrl_cnt][1] = arg_parse_enum_or_int(&arg);
01719                     arg_ctrl_cnt++;
01720                 }
01721             }
01722         }
01723 
01724         if (!match)
01725             argj++;
01726     }
01727 
01728     /* Check for unrecognized options */
01729     for (argi = argv; *argi; argi++)
01730         if (argi[0][0] == '-' && argi[0][1])
01731             die("Error: Unrecognized option %s\n", *argi);
01732 
01733     /* Handle non-option arguments */
01734     in_fn = argv[0];
01735 
01736     if (!in_fn)
01737         usage_exit();
01738 
01739     if(!out_fn)
01740         die("Error: Output file is required (specify with -o)\n");
01741 
01742     memset(&stats, 0, sizeof(stats));
01743 
01744     for (pass = one_pass_only ? one_pass_only - 1 : 0; pass < arg_passes; pass++)
01745     {
01746         int frames_in = 0, frames_out = 0;
01747         unsigned long nbytes = 0;
01748         struct detect_buffer detect;
01749 
01750         /* Parse certain options from the input file, if possible */
01751         infile = strcmp(in_fn, "-") ? fopen(in_fn, "rb")
01752                                     : set_binary_mode(stdin);
01753 
01754         if (!infile)
01755         {
01756             fprintf(stderr, "Failed to open input file\n");
01757             return EXIT_FAILURE;
01758         }
01759 
01760         /* For RAW input sources, these bytes will applied on the first frame
01761          *  in read_frame().
01762          */
01763         detect.buf_read = fread(detect.buf, 1, 4, infile);
01764         detect.position = 0;
01765 
01766         if (detect.buf_read == 4 && file_is_y4m(infile, &y4m, detect.buf))
01767         {
01768             if (y4m_input_open(&y4m, infile, detect.buf, 4) >= 0)
01769             {
01770                 file_type = FILE_TYPE_Y4M;
01771                 cfg.g_w = y4m.pic_w;
01772                 cfg.g_h = y4m.pic_h;
01773 
01774                 /* Use the frame rate from the file only if none was specified
01775                  * on the command-line.
01776                  */
01777                 if (!arg_have_framerate)
01778                 {
01779                     arg_framerate.num = y4m.fps_n;
01780                     arg_framerate.den = y4m.fps_d;
01781                 }
01782 
01783                 arg_use_i420 = 0;
01784             }
01785             else
01786             {
01787                 fprintf(stderr, "Unsupported Y4M stream.\n");
01788                 return EXIT_FAILURE;
01789             }
01790         }
01791         else if (detect.buf_read == 4 &&
01792                  file_is_ivf(infile, &fourcc, &cfg.g_w, &cfg.g_h, &detect))
01793         {
01794             file_type = FILE_TYPE_IVF;
01795             switch (fourcc)
01796             {
01797             case 0x32315659:
01798                 arg_use_i420 = 0;
01799                 break;
01800             case 0x30323449:
01801                 arg_use_i420 = 1;
01802                 break;
01803             default:
01804                 fprintf(stderr, "Unsupported fourcc (%08x) in IVF\n", fourcc);
01805                 return EXIT_FAILURE;
01806             }
01807         }
01808         else
01809         {
01810             file_type = FILE_TYPE_RAW;
01811         }
01812 
01813         if(!cfg.g_w || !cfg.g_h)
01814         {
01815             fprintf(stderr, "Specify stream dimensions with --width (-w) "
01816                             " and --height (-h).\n");
01817             return EXIT_FAILURE;
01818         }
01819 
01820 #define SHOW(field) fprintf(stderr, "    %-28s = %d\n", #field, cfg.field)
01821 
01822         if (verbose && pass == 0)
01823         {
01824             fprintf(stderr, "Codec: %s\n", vpx_codec_iface_name(codec->iface));
01825             fprintf(stderr, "Source file: %s Format: %s\n", in_fn,
01826                     arg_use_i420 ? "I420" : "YV12");
01827             fprintf(stderr, "Destination file: %s\n", out_fn);
01828             fprintf(stderr, "Encoder parameters:\n");
01829 
01830             SHOW(g_usage);
01831             SHOW(g_threads);
01832             SHOW(g_profile);
01833             SHOW(g_w);
01834             SHOW(g_h);
01835             SHOW(g_timebase.num);
01836             SHOW(g_timebase.den);
01837             SHOW(g_error_resilient);
01838             SHOW(g_pass);
01839             SHOW(g_lag_in_frames);
01840             SHOW(rc_dropframe_thresh);
01841             SHOW(rc_resize_allowed);
01842             SHOW(rc_resize_up_thresh);
01843             SHOW(rc_resize_down_thresh);
01844             SHOW(rc_end_usage);
01845             SHOW(rc_target_bitrate);
01846             SHOW(rc_min_quantizer);
01847             SHOW(rc_max_quantizer);
01848             SHOW(rc_undershoot_pct);
01849             SHOW(rc_overshoot_pct);
01850             SHOW(rc_buf_sz);
01851             SHOW(rc_buf_initial_sz);
01852             SHOW(rc_buf_optimal_sz);
01853             SHOW(rc_2pass_vbr_bias_pct);
01854             SHOW(rc_2pass_vbr_minsection_pct);
01855             SHOW(rc_2pass_vbr_maxsection_pct);
01856             SHOW(kf_mode);
01857             SHOW(kf_min_dist);
01858             SHOW(kf_max_dist);
01859         }
01860 
01861         if(pass == (one_pass_only ? one_pass_only - 1 : 0)) {
01862             if (file_type == FILE_TYPE_Y4M)
01863                 /*The Y4M reader does its own allocation.
01864                   Just initialize this here to avoid problems if we never read any
01865                    frames.*/
01866                 memset(&raw, 0, sizeof(raw));
01867             else
01868                 vpx_img_alloc(&raw, arg_use_i420 ? VPX_IMG_FMT_I420 : VPX_IMG_FMT_YV12,
01869                               cfg.g_w, cfg.g_h, 1);
01870 
01871             init_rate_histogram(&rate_hist, &cfg, &arg_framerate);
01872         }
01873 
01874         outfile = strcmp(out_fn, "-") ? fopen(out_fn, "wb")
01875                                       : set_binary_mode(stdout);
01876 
01877         if (!outfile)
01878         {
01879             fprintf(stderr, "Failed to open output file\n");
01880             return EXIT_FAILURE;
01881         }
01882 
01883         if(write_webm && fseek(outfile, 0, SEEK_CUR))
01884         {
01885             fprintf(stderr, "WebM output to pipes not supported.\n");
01886             return EXIT_FAILURE;
01887         }
01888 
01889         if (stats_fn)
01890         {
01891             if (!stats_open_file(&stats, stats_fn, pass))
01892             {
01893                 fprintf(stderr, "Failed to open statistics store\n");
01894                 return EXIT_FAILURE;
01895             }
01896         }
01897         else
01898         {
01899             if (!stats_open_mem(&stats, pass))
01900             {
01901                 fprintf(stderr, "Failed to open statistics store\n");
01902                 return EXIT_FAILURE;
01903             }
01904         }
01905 
01906         cfg.g_pass = arg_passes == 2
01907                      ? pass ? VPX_RC_LAST_PASS : VPX_RC_FIRST_PASS
01908                  : VPX_RC_ONE_PASS;
01909 #if VPX_ENCODER_ABI_VERSION > (1 + VPX_CODEC_ABI_VERSION)
01910 
01911         if (pass)
01912         {
01913             cfg.rc_twopass_stats_in = stats_get(&stats);
01914         }
01915 
01916 #endif
01917 
01918         if(write_webm)
01919         {
01920             ebml.stream = outfile;
01921             write_webm_file_header(&ebml, &cfg, &arg_framerate, stereo_fmt);
01922         }
01923         else
01924             write_ivf_file_header(outfile, &cfg, codec->fourcc, 0);
01925 
01926 
01927         /* Construct Encoder Context */
01928         vpx_codec_enc_init(&encoder, codec->iface, &cfg,
01929                            show_psnr ? VPX_CODEC_USE_PSNR : 0);
01930         ctx_exit_on_error(&encoder, "Failed to initialize encoder");
01931 
01932         /* Note that we bypass the vpx_codec_control wrapper macro because
01933          * we're being clever to store the control IDs in an array. Real
01934          * applications will want to make use of the enumerations directly
01935          */
01936         for (i = 0; i < arg_ctrl_cnt; i++)
01937         {
01938             if (vpx_codec_control_(&encoder, arg_ctrls[i][0], arg_ctrls[i][1]))
01939                 fprintf(stderr, "Error: Tried to set control %d = %d\n",
01940                         arg_ctrls[i][0], arg_ctrls[i][1]);
01941 
01942             ctx_exit_on_error(&encoder, "Failed to control codec");
01943         }
01944 
01945         frame_avail = 1;
01946         got_data = 0;
01947 
01948         while (frame_avail || got_data)
01949         {
01950             vpx_codec_iter_t iter = NULL;
01951             const vpx_codec_cx_pkt_t *pkt;
01952             struct vpx_usec_timer timer;
01953             int64_t frame_start, next_frame_start;
01954 
01955             if (!arg_limit || frames_in < arg_limit)
01956             {
01957                 frame_avail = read_frame(infile, &raw, file_type, &y4m,
01958                                          &detect);
01959 
01960                 if (frame_avail)
01961                     frames_in++;
01962 
01963                 fprintf(stderr,
01964                         "\rPass %d/%d frame %4d/%-4d %7ldB \033[K", pass + 1,
01965                         arg_passes, frames_in, frames_out, nbytes);
01966             }
01967             else
01968                 frame_avail = 0;
01969 
01970             vpx_usec_timer_start(&timer);
01971 
01972             frame_start = (cfg.g_timebase.den * (int64_t)(frames_in - 1)
01973                           * arg_framerate.den) / cfg.g_timebase.num / arg_framerate.num;
01974             next_frame_start = (cfg.g_timebase.den * (int64_t)(frames_in)
01975                                 * arg_framerate.den)
01976                                 / cfg.g_timebase.num / arg_framerate.num;
01977             vpx_codec_encode(&encoder, frame_avail ? &raw : NULL, frame_start,
01978                              next_frame_start - frame_start,
01979                              0, arg_deadline);
01980             vpx_usec_timer_mark(&timer);
01981             cx_time += vpx_usec_timer_elapsed(&timer);
01982             ctx_exit_on_error(&encoder, "Failed to encode frame");
01983 
01984             if(cfg.g_pass != VPX_RC_FIRST_PASS)
01985             {
01986                 int q;
01987 
01988                 vpx_codec_control(&encoder, VP8E_GET_LAST_QUANTIZER_64, &q);
01989                 ctx_exit_on_error(&encoder, "Failed to read quantizer");
01990                 counts[q]++;
01991             }
01992 
01993             got_data = 0;
01994 
01995             while ((pkt = vpx_codec_get_cx_data(&encoder, &iter)))
01996             {
01997                 got_data = 1;
01998 
01999                 switch (pkt->kind)
02000                 {
02001                 case VPX_CODEC_CX_FRAME_PKT:
02002                     frames_out++;
02003                     fprintf(stderr, " %6luF",
02004                             (unsigned long)pkt->data.frame.sz);
02005 
02006                     update_rate_histogram(&rate_hist, &cfg, pkt);
02007                     if(write_webm)
02008                     {
02009                         /* Update the hash */
02010                         if(!ebml.debug)
02011                             hash = murmur(pkt->data.frame.buf,
02012                                           pkt->data.frame.sz, hash);
02013 
02014                         write_webm_block(&ebml, &cfg, pkt);
02015                     }
02016                     else
02017                     {
02018                         write_ivf_frame_header(outfile, pkt);
02019                         if(fwrite(pkt->data.frame.buf, 1,
02020                                   pkt->data.frame.sz, outfile));
02021                     }
02022                     nbytes += pkt->data.raw.sz;
02023                     break;
02024                 case VPX_CODEC_STATS_PKT:
02025                     frames_out++;
02026                     fprintf(stderr, " %6luS",
02027                            (unsigned long)pkt->data.twopass_stats.sz);
02028                     stats_write(&stats,
02029                                 pkt->data.twopass_stats.buf,
02030                                 pkt->data.twopass_stats.sz);
02031                     nbytes += pkt->data.raw.sz;
02032                     break;
02033                 case VPX_CODEC_PSNR_PKT:
02034 
02035                     if (show_psnr)
02036                     {
02037                         int i;
02038 
02039                         psnr_sse_total += pkt->data.psnr.sse[0];
02040                         psnr_samples_total += pkt->data.psnr.samples[0];
02041                         for (i = 0; i < 4; i++)
02042                         {
02043                             fprintf(stderr, "%.3lf ", pkt->data.psnr.psnr[i]);
02044                             psnr_totals[i] += pkt->data.psnr.psnr[i];
02045                         }
02046                         psnr_count++;
02047                     }
02048 
02049                     break;
02050                 default:
02051                     break;
02052                 }
02053             }
02054 
02055             fflush(stdout);
02056         }
02057 
02058         fprintf(stderr,
02059                "\rPass %d/%d frame %4d/%-4d %7ldB %7ldb/f %7"PRId64"b/s"
02060                " %7lu %s (%.2f fps)\033[K", pass + 1,
02061                arg_passes, frames_in, frames_out, nbytes, nbytes * 8 / frames_in,
02062                nbytes * 8 *(int64_t)arg_framerate.num / arg_framerate.den / frames_in,
02063                cx_time > 9999999 ? cx_time / 1000 : cx_time,
02064                cx_time > 9999999 ? "ms" : "us",
02065                (float)frames_in * 1000000.0 / (float)cx_time);
02066 
02067         if ( (show_psnr) && (psnr_count>0) )
02068         {
02069             int i;
02070             double ovpsnr = vp8_mse2psnr(psnr_samples_total, 255.0,
02071                                          psnr_sse_total);
02072 
02073             fprintf(stderr, "\nPSNR (Overall/Avg/Y/U/V)");
02074 
02075             fprintf(stderr, " %.3lf", ovpsnr);
02076             for (i = 0; i < 4; i++)
02077             {
02078                 fprintf(stderr, " %.3lf", psnr_totals[i]/psnr_count);
02079             }
02080         }
02081 
02082         vpx_codec_destroy(&encoder);
02083 
02084         fclose(infile);
02085         if (file_type == FILE_TYPE_Y4M)
02086             y4m_input_close(&y4m);
02087 
02088         if(write_webm)
02089         {
02090             write_webm_file_footer(&ebml, hash);
02091             free(ebml.cue_list);
02092             ebml.cue_list = NULL;
02093         }
02094         else
02095         {
02096             if (!fseek(outfile, 0, SEEK_SET))
02097                 write_ivf_file_header(outfile, &cfg, codec->fourcc, frames_out);
02098         }
02099 
02100         fclose(outfile);
02101         stats_close(&stats, arg_passes-1);
02102         fprintf(stderr, "\n");
02103 
02104         if (one_pass_only)
02105             break;
02106     }
02107 
02108     if (show_q_hist_buckets)
02109         show_q_histogram(counts, show_q_hist_buckets);
02110 
02111     if (show_rate_hist_buckets)
02112         show_rate_histogram(&rate_hist, &cfg, show_rate_hist_buckets);
02113     destroy_rate_histogram(&rate_hist);
02114 
02115     vpx_img_free(&raw);
02116     free(argv);
02117     return EXIT_SUCCESS;
02118 }

Generated on 6 May 2012 for WebM VP8 Codec SDK by  doxygen 1.6.1