vpxenc.c 63.9 KB
Newer Older
John Koleszar's avatar
John Koleszar committed
1
/*
2
 *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
John Koleszar's avatar
John Koleszar committed
3
 *
4
 *  Use of this source code is governed by a BSD-style license
5 6
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
7
 *  in the file PATENTS.  All contributing project authors may
8
 *  be found in the AUTHORS file in the root of the source tree.
John Koleszar's avatar
John Koleszar committed
9 10 11 12 13 14
 */


/* This is a simple program that encodes YV12 files and generates ivf
 * files using the new interface.
 */
15
#if defined(_WIN32) || !CONFIG_OS_SUPPORT
16 17 18 19
#define USE_POSIX_MMAP 0
#else
#define USE_POSIX_MMAP 1
#endif
John Koleszar's avatar
John Koleszar committed
20 21 22 23 24

#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
John Koleszar's avatar
John Koleszar committed
25
#include <limits.h>
26
#include <assert.h>
27
#include "vpx/vpx_encoder.h"
John Koleszar's avatar
John Koleszar committed
28 29 30 31 32 33 34
#if USE_POSIX_MMAP
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <unistd.h>
#endif
John Koleszar's avatar
John Koleszar committed
35
#include "vpx_version.h"
36
#include "vpx/vp8cx.h"
John Koleszar's avatar
John Koleszar committed
37 38
#include "vpx_ports/mem_ops.h"
#include "vpx_ports/vpx_timer.h"
John Koleszar's avatar
John Koleszar committed
39
#include "tools_common.h"
40
#include "y4minput.h"
John Koleszar's avatar
John Koleszar committed
41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60
#include "libmkv/EbmlWriter.h"
#include "libmkv/EbmlIDs.h"

/* Need special handling of these functions on Windows */
#if defined(_MSC_VER)
/* MSVS doesn't define off_t, and uses _f{seek,tell}i64 */
typedef __int64 off_t;
#define fseeko _fseeki64
#define ftello _ftelli64
#elif defined(_WIN32)
/* MinGW defines off_t, and uses f{seek,tell}o64 */
#define fseeko fseeko64
#define ftello ftello64
#endif

#if defined(_MSC_VER)
#define LITERALU64(n) n
#else
#define LITERALU64(n) n##LLU
#endif
John Koleszar's avatar
John Koleszar committed
61

62 63 64 65 66 67 68 69
/* We should use 32-bit file operations in WebM file format
 * when building ARM executable file (.axf) with RVCT */
#if !CONFIG_OS_SUPPORT
typedef long off_t;
#define fseeko fseek
#define ftello ftell
#endif

John Koleszar's avatar
John Koleszar committed
70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89
static const char *exec_name;

static const struct codec_item
{
    char const              *name;
    const vpx_codec_iface_t *iface;
    unsigned int             fourcc;
} codecs[] =
{
#if CONFIG_VP8_ENCODER
    {"vp8",  &vpx_codec_vp8_cx_algo, 0x30385056},
#endif
};

static void usage_exit();

void die(const char *fmt, ...)
{
    va_list ap;
    va_start(ap, fmt);
90 91
    vfprintf(stderr, fmt, ap);
    fprintf(stderr, "\n");
John Koleszar's avatar
John Koleszar committed
92 93 94 95 96 97 98 99 100
    usage_exit();
}

static void ctx_exit_on_error(vpx_codec_ctx_t *ctx, const char *s)
{
    if (ctx->err)
    {
        const char *detail = vpx_codec_error_detail(ctx);

101
        fprintf(stderr, "%s: %s\n", s, vpx_codec_error(ctx));
John Koleszar's avatar
John Koleszar committed
102 103

        if (detail)
104
            fprintf(stderr, "    %s\n", detail);
John Koleszar's avatar
John Koleszar committed
105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166

        exit(EXIT_FAILURE);
    }
}

/* This structure is used to abstract the different ways of handling
 * first pass statistics.
 */
typedef struct
{
    vpx_fixed_buf_t buf;
    int             pass;
    FILE           *file;
    char           *buf_ptr;
    size_t          buf_alloc_sz;
} stats_io_t;

int stats_open_file(stats_io_t *stats, const char *fpf, int pass)
{
    int res;

    stats->pass = pass;

    if (pass == 0)
    {
        stats->file = fopen(fpf, "wb");
        stats->buf.sz = 0;
        stats->buf.buf = NULL,
                   res = (stats->file != NULL);
    }
    else
    {
#if 0
#elif USE_POSIX_MMAP
        struct stat stat_buf;
        int fd;

        fd = open(fpf, O_RDONLY);
        stats->file = fdopen(fd, "rb");
        fstat(fd, &stat_buf);
        stats->buf.sz = stat_buf.st_size;
        stats->buf.buf = mmap(NULL, stats->buf.sz, PROT_READ, MAP_PRIVATE,
                              fd, 0);
        res = (stats->buf.buf != NULL);
#else
        size_t nbytes;

        stats->file = fopen(fpf, "rb");

        if (fseek(stats->file, 0, SEEK_END))
        {
            fprintf(stderr, "First-pass stats file must be seekable!\n");
            exit(EXIT_FAILURE);
        }

        stats->buf.sz = stats->buf_alloc_sz = ftell(stats->file);
        rewind(stats->file);

        stats->buf.buf = malloc(stats->buf_alloc_sz);

        if (!stats->buf.buf)
        {
Ralph Giles's avatar
Ralph Giles committed
167 168
            fprintf(stderr, "Failed to allocate first-pass stats buffer (%lu bytes)\n",
                    (unsigned long)stats->buf_alloc_sz);
John Koleszar's avatar
John Koleszar committed
169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197
            exit(EXIT_FAILURE);
        }

        nbytes = fread(stats->buf.buf, 1, stats->buf.sz, stats->file);
        res = (nbytes == stats->buf.sz);
#endif
    }

    return res;
}

int stats_open_mem(stats_io_t *stats, int pass)
{
    int res;
    stats->pass = pass;

    if (!pass)
    {
        stats->buf.sz = 0;
        stats->buf_alloc_sz = 64 * 1024;
        stats->buf.buf = malloc(stats->buf_alloc_sz);
    }

    stats->buf_ptr = stats->buf.buf;
    res = (stats->buf.buf != NULL);
    return res;
}


James Berry's avatar
James Berry committed
198
void stats_close(stats_io_t *stats, int last_pass)
John Koleszar's avatar
John Koleszar committed
199 200 201
{
    if (stats->file)
    {
James Berry's avatar
James Berry committed
202
        if (stats->pass == last_pass)
John Koleszar's avatar
John Koleszar committed
203 204 205 206 207 208 209 210 211 212 213 214 215 216
        {
#if 0
#elif USE_POSIX_MMAP
            munmap(stats->buf.buf, stats->buf.sz);
#else
            free(stats->buf.buf);
#endif
        }

        fclose(stats->file);
        stats->file = NULL;
    }
    else
    {
James Berry's avatar
James Berry committed
217
        if (stats->pass == last_pass)
John Koleszar's avatar
John Koleszar committed
218 219 220 221 222 223 224 225
            free(stats->buf.buf);
    }
}

void stats_write(stats_io_t *stats, const void *pkt, size_t len)
{
    if (stats->file)
    {
226
        if(fwrite(pkt, 1, len, stats->file));
John Koleszar's avatar
John Koleszar committed
227 228 229 230 231 232 233 234 235 236 237 238 239
    }
    else
    {
        if (stats->buf.sz + len > stats->buf_alloc_sz)
        {
            size_t  new_sz = stats->buf_alloc_sz + 64 * 1024;
            char   *new_ptr = realloc(stats->buf.buf, new_sz);

            if (new_ptr)
            {
                stats->buf_ptr = new_ptr + (stats->buf_ptr - (char *)stats->buf.buf);
                stats->buf.buf = new_ptr;
                stats->buf_alloc_sz = new_sz;
240 241 242 243 244 245 246
            }
            else
            {
                fprintf(stderr,
                        "\nFailed to realloc firstpass stats buffer.\n");
                exit(EXIT_FAILURE);
            }
John Koleszar's avatar
John Koleszar committed
247 248 249 250 251 252 253 254 255 256 257 258 259
        }

        memcpy(stats->buf_ptr, pkt, len);
        stats->buf.sz += len;
        stats->buf_ptr += len;
    }
}

vpx_fixed_buf_t stats_get(stats_io_t *stats)
{
    return stats->buf;
}

260 261 262 263 264 265 266 267 268 269
/* Stereo 3D packed frame format */
typedef enum stereo_format
{
    STEREO_FORMAT_MONO       = 0,
    STEREO_FORMAT_LEFT_RIGHT = 1,
    STEREO_FORMAT_BOTTOM_TOP = 2,
    STEREO_FORMAT_TOP_BOTTOM = 3,
    STEREO_FORMAT_RIGHT_LEFT = 11
} stereo_format_t;

270 271 272 273 274 275 276
enum video_file_type
{
    FILE_TYPE_RAW,
    FILE_TYPE_IVF,
    FILE_TYPE_Y4M
};

277 278
struct detect_buffer {
    char buf[4];
279 280
    size_t buf_read;
    size_t position;
281 282 283
};


John Koleszar's avatar
John Koleszar committed
284
#define IVF_FRAME_HDR_SZ (4+8) /* 4 byte size + 8 byte timestamp */
285
static int read_frame(FILE *f, vpx_image_t *img, unsigned int file_type,
286
                      y4m_input *y4m, struct detect_buffer *detect)
John Koleszar's avatar
John Koleszar committed
287 288
{
    int plane = 0;
289
    int shortread = 0;
John Koleszar's avatar
John Koleszar committed
290

291
    if (file_type == FILE_TYPE_Y4M)
John Koleszar's avatar
John Koleszar committed
292
    {
293
        if (y4m_input_fetch_frame(y4m, f, img) < 1)
294
           return 0;
John Koleszar's avatar
John Koleszar committed
295
    }
296
    else
John Koleszar's avatar
John Koleszar committed
297
    {
298
        if (file_type == FILE_TYPE_IVF)
John Koleszar's avatar
John Koleszar committed
299
        {
300 301 302 303 304 305
            char junk[IVF_FRAME_HDR_SZ];

            /* Skip the frame header. We know how big the frame should be. See
             * write_ivf_frame_header() for documentation on the frame header
             * layout.
             */
306
            if(fread(junk, 1, IVF_FRAME_HDR_SZ, f));
John Koleszar's avatar
John Koleszar committed
307 308
        }

309
        for (plane = 0; plane < 3; plane++)
John Koleszar's avatar
John Koleszar committed
310
        {
311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333
            unsigned char *ptr;
            int w = (plane ? (1 + img->d_w) / 2 : img->d_w);
            int h = (plane ? (1 + img->d_h) / 2 : img->d_h);
            int r;

            /* Determine the correct plane based on the image format. The for-loop
             * always counts in Y,U,V order, but this may not match the order of
             * the data on disk.
             */
            switch (plane)
            {
            case 1:
                ptr = img->planes[img->fmt==VPX_IMG_FMT_YV12? VPX_PLANE_V : VPX_PLANE_U];
                break;
            case 2:
                ptr = img->planes[img->fmt==VPX_IMG_FMT_YV12?VPX_PLANE_U : VPX_PLANE_V];
                break;
            default:
                ptr = img->planes[plane];
            }

            for (r = 0; r < h; r++)
            {
334 335 336 337
                size_t needed = w;
                size_t buf_position = 0;
                const size_t left = detect->buf_read - detect->position;
                if (left > 0)
338
                {
339 340 341 342 343 344 345 346 347
                    const size_t more = (left < needed) ? left : needed;
                    memcpy(ptr, detect->buf + detect->position, more);
                    buf_position = more;
                    needed -= more;
                    detect->position += more;
                }
                if (needed > 0)
                {
                    shortread |= (fread(ptr + buf_position, 1, needed, f) < needed);
348 349
                }

350 351
                ptr += img->stride[plane];
            }
John Koleszar's avatar
John Koleszar committed
352 353 354
        }
    }

355
    return !shortread;
John Koleszar's avatar
John Koleszar committed
356 357 358
}


359
unsigned int file_is_y4m(FILE      *infile,
360 361
                         y4m_input *y4m,
                         char       detect[4])
362
{
363
    if(memcmp(detect, "YUV4", 4) == 0)
364 365 366 367 368 369
    {
        return 1;
    }
    return 0;
}

John Koleszar's avatar
John Koleszar committed
370 371 372 373
#define IVF_FILE_HDR_SZ (32)
unsigned int file_is_ivf(FILE *infile,
                         unsigned int *fourcc,
                         unsigned int *width,
374
                         unsigned int *height,
375
                         struct detect_buffer *detect)
John Koleszar's avatar
John Koleszar committed
376 377 378 379
{
    char raw_hdr[IVF_FILE_HDR_SZ];
    int is_ivf = 0;

380
    if(memcmp(detect->buf, "DKIF", 4) != 0)
381 382
        return 0;

John Koleszar's avatar
John Koleszar committed
383 384 385
    /* See write_ivf_file_header() for more documentation on the file header
     * layout.
     */
386 387
    if (fread(raw_hdr + 4, 1, IVF_FILE_HDR_SZ - 4, infile)
        == IVF_FILE_HDR_SZ - 4)
John Koleszar's avatar
John Koleszar committed
388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403
    {
        {
            is_ivf = 1;

            if (mem_get_le16(raw_hdr + 4) != 0)
                fprintf(stderr, "Error: Unrecognized IVF version! This file may not"
                        " decode properly.");

            *fourcc = mem_get_le32(raw_hdr + 8);
        }
    }

    if (is_ivf)
    {
        *width = mem_get_le16(raw_hdr + 12);
        *height = mem_get_le16(raw_hdr + 14);
404
        detect->position = 4;
John Koleszar's avatar
John Koleszar committed
405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434
    }

    return is_ivf;
}


static void write_ivf_file_header(FILE *outfile,
                                  const vpx_codec_enc_cfg_t *cfg,
                                  unsigned int fourcc,
                                  int frame_cnt)
{
    char header[32];

    if (cfg->g_pass != VPX_RC_ONE_PASS && cfg->g_pass != VPX_RC_LAST_PASS)
        return;

    header[0] = 'D';
    header[1] = 'K';
    header[2] = 'I';
    header[3] = 'F';
    mem_put_le16(header + 4,  0);                 /* version */
    mem_put_le16(header + 6,  32);                /* headersize */
    mem_put_le32(header + 8,  fourcc);            /* headersize */
    mem_put_le16(header + 12, cfg->g_w);          /* width */
    mem_put_le16(header + 14, cfg->g_h);          /* height */
    mem_put_le32(header + 16, cfg->g_timebase.den); /* rate */
    mem_put_le32(header + 20, cfg->g_timebase.num); /* scale */
    mem_put_le32(header + 24, frame_cnt);         /* length */
    mem_put_le32(header + 28, 0);                 /* unused */

435
    if(fwrite(header, 1, 32, outfile));
John Koleszar's avatar
John Koleszar committed
436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452
}


static void write_ivf_frame_header(FILE *outfile,
                                   const vpx_codec_cx_pkt_t *pkt)
{
    char             header[12];
    vpx_codec_pts_t  pts;

    if (pkt->kind != VPX_CODEC_CX_FRAME_PKT)
        return;

    pts = pkt->data.frame.pts;
    mem_put_le32(header, pkt->data.frame.sz);
    mem_put_le32(header + 4, pts & 0xFFFFFFFF);
    mem_put_le32(header + 8, pts >> 32);

453
    if(fwrite(header, 1, 12, outfile));
John Koleszar's avatar
John Koleszar committed
454 455
}

John Koleszar's avatar
John Koleszar committed
456 457 458 459 460 461 462 463 464 465 466 467 468

typedef off_t EbmlLoc;


struct cue_entry
{
    unsigned int time;
    uint64_t     loc;
};


struct EbmlGlobal
{
469 470
    int debug;

John Koleszar's avatar
John Koleszar committed
471
    FILE    *stream;
472
    int64_t last_pts_ms;
John Koleszar's avatar
John Koleszar committed
473 474 475 476 477 478 479 480 481 482
    vpx_rational_t  framerate;

    /* These pointers are to the start of an element */
    off_t    position_reference;
    off_t    seek_info_pos;
    off_t    segment_info_pos;
    off_t    track_pos;
    off_t    cue_pos;
    off_t    cluster_pos;

John Koleszar's avatar
John Koleszar committed
483 484 485
    /* This pointer is to a specific element to be serialized */
    off_t    track_id_pos;

John Koleszar's avatar
John Koleszar committed
486 487 488 489 490 491 492 493 494 495 496 497 498 499 500
    /* These pointers are to the size field of the element */
    EbmlLoc  startSegment;
    EbmlLoc  startCluster;

    uint32_t cluster_timecode;
    int      cluster_open;

    struct cue_entry *cue_list;
    unsigned int      cues;

};


void Ebml_Write(EbmlGlobal *glob, const void *buffer_in, unsigned long len)
{
501
    if(fwrite(buffer_in, 1, len, glob->stream));
John Koleszar's avatar
John Koleszar committed
502 503 504 505 506 507 508 509 510 511 512 513
}


void Ebml_Serialize(EbmlGlobal *glob, const void *buffer_in, unsigned long len)
{
    const unsigned char *q = (const unsigned char *)buffer_in + len - 1;

    for(; len; len--)
        Ebml_Write(glob, q--, 1);
}


John Koleszar's avatar
John Koleszar committed
514 515 516 517 518 519 520 521 522 523 524 525
/* Need a fixed size serializer for the track ID. libmkv provdes a 64 bit
 * one, but not a 32 bit one.
 */
static void Ebml_SerializeUnsigned32(EbmlGlobal *glob, unsigned long class_id, uint64_t ui)
{
    unsigned char sizeSerialized = 4 | 0x80;
    Ebml_WriteID(glob, class_id);
    Ebml_Serialize(glob, &sizeSerialized, 1);
    Ebml_Serialize(glob, &ui, 4);
}


John Koleszar's avatar
John Koleszar committed
526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607
static void
Ebml_StartSubElement(EbmlGlobal *glob, EbmlLoc *ebmlLoc,
                          unsigned long class_id)
{
    //todo this is always taking 8 bytes, this may need later optimization
    //this is a key that says lenght unknown
    unsigned long long unknownLen =  LITERALU64(0x01FFFFFFFFFFFFFF);

    Ebml_WriteID(glob, class_id);
    *ebmlLoc = ftello(glob->stream);
    Ebml_Serialize(glob, &unknownLen, 8);
}

static void
Ebml_EndSubElement(EbmlGlobal *glob, EbmlLoc *ebmlLoc)
{
    off_t pos;
    uint64_t size;

    /* Save the current stream pointer */
    pos = ftello(glob->stream);

    /* Calculate the size of this element */
    size = pos - *ebmlLoc - 8;
    size |=  LITERALU64(0x0100000000000000);

    /* Seek back to the beginning of the element and write the new size */
    fseeko(glob->stream, *ebmlLoc, SEEK_SET);
    Ebml_Serialize(glob, &size, 8);

    /* Reset the stream pointer */
    fseeko(glob->stream, pos, SEEK_SET);
}


static void
write_webm_seek_element(EbmlGlobal *ebml, unsigned long id, off_t pos)
{
    uint64_t offset = pos - ebml->position_reference;
    EbmlLoc start;
    Ebml_StartSubElement(ebml, &start, Seek);
    Ebml_SerializeBinary(ebml, SeekID, id);
    Ebml_SerializeUnsigned64(ebml, SeekPosition, offset);
    Ebml_EndSubElement(ebml, &start);
}


static void
write_webm_seek_info(EbmlGlobal *ebml)
{

    off_t pos;

    /* Save the current stream pointer */
    pos = ftello(ebml->stream);

    if(ebml->seek_info_pos)
        fseeko(ebml->stream, ebml->seek_info_pos, SEEK_SET);
    else
        ebml->seek_info_pos = pos;

    {
        EbmlLoc start;

        Ebml_StartSubElement(ebml, &start, SeekHead);
        write_webm_seek_element(ebml, Tracks, ebml->track_pos);
        write_webm_seek_element(ebml, Cues,   ebml->cue_pos);
        write_webm_seek_element(ebml, Info,   ebml->segment_info_pos);
        Ebml_EndSubElement(ebml, &start);
    }
    {
        //segment info
        EbmlLoc startInfo;
        uint64_t frame_time;

        frame_time = (uint64_t)1000 * ebml->framerate.den
                     / ebml->framerate.num;
        ebml->segment_info_pos = ftello(ebml->stream);
        Ebml_StartSubElement(ebml, &startInfo, Info);
        Ebml_SerializeUnsigned(ebml, TimecodeScale, 1000000);
        Ebml_SerializeFloat(ebml, Segment_Duration,
                            ebml->last_pts_ms + frame_time);
608 609 610 611
        Ebml_SerializeString(ebml, 0x4D80,
            ebml->debug ? "vpxenc" : "vpxenc" VERSION_STRING);
        Ebml_SerializeString(ebml, 0x5741,
            ebml->debug ? "vpxenc" : "vpxenc" VERSION_STRING);
John Koleszar's avatar
John Koleszar committed
612 613 614 615 616 617 618 619
        Ebml_EndSubElement(ebml, &startInfo);
    }
}


static void
write_webm_file_header(EbmlGlobal                *glob,
                       const vpx_codec_enc_cfg_t *cfg,
620 621
                       const struct vpx_rational *fps,
                       stereo_format_t            stereo_fmt)
John Koleszar's avatar
John Koleszar committed
622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651
{
    {
        EbmlLoc start;
        Ebml_StartSubElement(glob, &start, EBML);
        Ebml_SerializeUnsigned(glob, EBMLVersion, 1);
        Ebml_SerializeUnsigned(glob, EBMLReadVersion, 1); //EBML Read Version
        Ebml_SerializeUnsigned(glob, EBMLMaxIDLength, 4); //EBML Max ID Length
        Ebml_SerializeUnsigned(glob, EBMLMaxSizeLength, 8); //EBML Max Size Length
        Ebml_SerializeString(glob, DocType, "webm"); //Doc Type
        Ebml_SerializeUnsigned(glob, DocTypeVersion, 2); //Doc Type Version
        Ebml_SerializeUnsigned(glob, DocTypeReadVersion, 2); //Doc Type Read Version
        Ebml_EndSubElement(glob, &start);
    }
    {
        Ebml_StartSubElement(glob, &glob->startSegment, Segment); //segment
        glob->position_reference = ftello(glob->stream);
        glob->framerate = *fps;
        write_webm_seek_info(glob);

        {
            EbmlLoc trackStart;
            glob->track_pos = ftello(glob->stream);
            Ebml_StartSubElement(glob, &trackStart, Tracks);
            {
                unsigned int trackNumber = 1;
                uint64_t     trackID = 0;

                EbmlLoc start;
                Ebml_StartSubElement(glob, &start, TrackEntry);
                Ebml_SerializeUnsigned(glob, TrackNumber, trackNumber);
John Koleszar's avatar
John Koleszar committed
652 653
                glob->track_id_pos = ftello(glob->stream);
                Ebml_SerializeUnsigned32(glob, TrackUID, trackID);
John Koleszar's avatar
John Koleszar committed
654 655 656 657 658 659 660 661 662 663 664
                Ebml_SerializeUnsigned(glob, TrackType, 1); //video is always 1
                Ebml_SerializeString(glob, CodecID, "V_VP8");
                {
                    unsigned int pixelWidth = cfg->g_w;
                    unsigned int pixelHeight = cfg->g_h;
                    float        frameRate   = (float)fps->num/(float)fps->den;

                    EbmlLoc videoStart;
                    Ebml_StartSubElement(glob, &videoStart, Video);
                    Ebml_SerializeUnsigned(glob, PixelWidth, pixelWidth);
                    Ebml_SerializeUnsigned(glob, PixelHeight, pixelHeight);
665
                    Ebml_SerializeUnsigned(glob, StereoMode, stereo_fmt);
John Koleszar's avatar
John Koleszar committed
666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686
                    Ebml_SerializeFloat(glob, FrameRate, frameRate);
                    Ebml_EndSubElement(glob, &videoStart); //Video
                }
                Ebml_EndSubElement(glob, &start); //Track Entry
            }
            Ebml_EndSubElement(glob, &trackStart);
        }
        // segment element is open
    }
}


static void
write_webm_block(EbmlGlobal                *glob,
                 const vpx_codec_enc_cfg_t *cfg,
                 const vpx_codec_cx_pkt_t  *pkt)
{
    unsigned long  block_length;
    unsigned char  track_number;
    unsigned short block_timecode = 0;
    unsigned char  flags;
687
    int64_t        pts_ms;
John Koleszar's avatar
John Koleszar committed
688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719
    int            start_cluster = 0, is_keyframe;

    /* Calculate the PTS of this frame in milliseconds */
    pts_ms = pkt->data.frame.pts * 1000
             * (uint64_t)cfg->g_timebase.num / (uint64_t)cfg->g_timebase.den;
    if(pts_ms <= glob->last_pts_ms)
        pts_ms = glob->last_pts_ms + 1;
    glob->last_pts_ms = pts_ms;

    /* Calculate the relative time of this block */
    if(pts_ms - glob->cluster_timecode > SHRT_MAX)
        start_cluster = 1;
    else
        block_timecode = pts_ms - glob->cluster_timecode;

    is_keyframe = (pkt->data.frame.flags & VPX_FRAME_IS_KEY);
    if(start_cluster || is_keyframe)
    {
        if(glob->cluster_open)
            Ebml_EndSubElement(glob, &glob->startCluster);

        /* Open the new cluster */
        block_timecode = 0;
        glob->cluster_open = 1;
        glob->cluster_timecode = pts_ms;
        glob->cluster_pos = ftello(glob->stream);
        Ebml_StartSubElement(glob, &glob->startCluster, Cluster); //cluster
        Ebml_SerializeUnsigned(glob, Timecode, glob->cluster_timecode);

        /* Save a cue point if this is a keyframe. */
        if(is_keyframe)
        {
720 721 722 723 724 725 726 727 728 729 730
            struct cue_entry *cue, *new_cue_list;

            new_cue_list = realloc(glob->cue_list,
                                   (glob->cues+1) * sizeof(struct cue_entry));
            if(new_cue_list)
                glob->cue_list = new_cue_list;
            else
            {
                fprintf(stderr, "\nFailed to realloc cue list.\n");
                exit(EXIT_FAILURE);
            }
John Koleszar's avatar
John Koleszar committed
731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763

            cue = &glob->cue_list[glob->cues];
            cue->time = glob->cluster_timecode;
            cue->loc = glob->cluster_pos;
            glob->cues++;
        }
    }

    /* Write the Simple Block */
    Ebml_WriteID(glob, SimpleBlock);

    block_length = pkt->data.frame.sz + 4;
    block_length |= 0x10000000;
    Ebml_Serialize(glob, &block_length, 4);

    track_number = 1;
    track_number |= 0x80;
    Ebml_Write(glob, &track_number, 1);

    Ebml_Serialize(glob, &block_timecode, 2);

    flags = 0;
    if(is_keyframe)
        flags |= 0x80;
    if(pkt->data.frame.flags & VPX_FRAME_IS_INVISIBLE)
        flags |= 0x08;
    Ebml_Write(glob, &flags, 1);

    Ebml_Write(glob, pkt->data.frame.buf, pkt->data.frame.sz);
}


static void
John Koleszar's avatar
John Koleszar committed
764
write_webm_file_footer(EbmlGlobal *glob, long hash)
John Koleszar's avatar
John Koleszar committed
765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802
{

    if(glob->cluster_open)
        Ebml_EndSubElement(glob, &glob->startCluster);

    {
        EbmlLoc start;
        int i;

        glob->cue_pos = ftello(glob->stream);
        Ebml_StartSubElement(glob, &start, Cues);
        for(i=0; i<glob->cues; i++)
        {
            struct cue_entry *cue = &glob->cue_list[i];
            EbmlLoc start;

            Ebml_StartSubElement(glob, &start, CuePoint);
            {
                EbmlLoc start;

                Ebml_SerializeUnsigned(glob, CueTime, cue->time);

                Ebml_StartSubElement(glob, &start, CueTrackPositions);
                Ebml_SerializeUnsigned(glob, CueTrack, 1);
                Ebml_SerializeUnsigned64(glob, CueClusterPosition,
                                         cue->loc - glob->position_reference);
                //Ebml_SerializeUnsigned(glob, CueBlockNumber, cue->blockNumber);
                Ebml_EndSubElement(glob, &start);
            }
            Ebml_EndSubElement(glob, &start);
        }
        Ebml_EndSubElement(glob, &start);
    }

    Ebml_EndSubElement(glob, &glob->startSegment);

    /* Patch up the seek info block */
    write_webm_seek_info(glob);
John Koleszar's avatar
John Koleszar committed
803 804 805 806 807

    /* Patch up the track id */
    fseeko(glob->stream, glob->track_id_pos, SEEK_SET);
    Ebml_SerializeUnsigned32(glob, TrackUID, glob->debug ? 0xDEADBEEF : hash);

John Koleszar's avatar
John Koleszar committed
808 809 810 811
    fseeko(glob->stream, 0, SEEK_END);
}


John Koleszar's avatar
John Koleszar committed
812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858
/* Murmur hash derived from public domain reference implementation at
 *   http://sites.google.com/site/murmurhash/
 */
static unsigned int murmur ( const void * key, int len, unsigned int seed )
{
    const unsigned int m = 0x5bd1e995;
    const int r = 24;

    unsigned int h = seed ^ len;

    const unsigned char * data = (const unsigned char *)key;

    while(len >= 4)
    {
        unsigned int k;

        k  = data[0];
        k |= data[1] << 8;
        k |= data[2] << 16;
        k |= data[3] << 24;

        k *= m;
        k ^= k >> r;
        k *= m;

        h *= m;
        h ^= k;

        data += 4;
        len -= 4;
    }

    switch(len)
    {
    case 3: h ^= data[2] << 16;
    case 2: h ^= data[1] << 8;
    case 1: h ^= data[0];
            h *= m;
    };

    h ^= h >> 13;
    h *= m;
    h ^= h >> 15;

    return h;
}

859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875
#include "math.h"

static double vp8_mse2psnr(double Samples, double Peak, double Mse)
{
    double psnr;

    if ((double)Mse > 0.0)
        psnr = 10.0 * log10(Peak * Peak * Samples / Mse);
    else
        psnr = 60;      // Limit to prevent / 0

    if (psnr > 60)
        psnr = 60;

    return psnr;
}

John Koleszar's avatar
John Koleszar committed
876

John Koleszar's avatar
John Koleszar committed
877 878
#include "args.h"

879 880
static const arg_def_t debugmode = ARG_DEF("D", "debug", 0,
        "Debug mode (makes output deterministic)");
881 882
static const arg_def_t outputfile = ARG_DEF("o", "output", 1,
        "Output filename");
John Koleszar's avatar
John Koleszar committed
883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908
static const arg_def_t use_yv12 = ARG_DEF(NULL, "yv12", 0,
                                  "Input file is YV12 ");
static const arg_def_t use_i420 = ARG_DEF(NULL, "i420", 0,
                                  "Input file is I420 (default)");
static const arg_def_t codecarg = ARG_DEF(NULL, "codec", 1,
                                  "Codec to use");
static const arg_def_t passes           = ARG_DEF("p", "passes", 1,
        "Number of passes (1/2)");
static const arg_def_t pass_arg         = ARG_DEF(NULL, "pass", 1,
        "Pass to execute (1/2)");
static const arg_def_t fpf_name         = ARG_DEF(NULL, "fpf", 1,
        "First pass statistics file name");
static const arg_def_t limit = ARG_DEF(NULL, "limit", 1,
                                       "Stop encoding after n input frames");
static const arg_def_t deadline         = ARG_DEF("d", "deadline", 1,
        "Deadline per frame (usec)");
static const arg_def_t best_dl          = ARG_DEF(NULL, "best", 0,
        "Use Best Quality Deadline");
static const arg_def_t good_dl          = ARG_DEF(NULL, "good", 0,
        "Use Good Quality Deadline");
static const arg_def_t rt_dl            = ARG_DEF(NULL, "rt", 0,
        "Use Realtime Quality Deadline");
static const arg_def_t verbosearg       = ARG_DEF("v", "verbose", 0,
        "Show encoder parameters");
static const arg_def_t psnrarg          = ARG_DEF(NULL, "psnr", 0,
        "Show PSNR in status line");
909
static const arg_def_t framerate        = ARG_DEF(NULL, "fps", 1,
910
        "Stream frame rate (rate/scale)");
John Koleszar's avatar
John Koleszar committed
911 912
static const arg_def_t use_ivf          = ARG_DEF(NULL, "ivf", 0,
        "Output IVF (default is WebM)");
913 914
static const arg_def_t q_hist_n         = ARG_DEF(NULL, "q-hist", 1,
        "Show quantizer histogram (n-buckets)");
915 916
static const arg_def_t rate_hist_n         = ARG_DEF(NULL, "rate-hist", 1,
        "Show rate histogram (n-buckets)");
John Koleszar's avatar
John Koleszar committed
917 918
static const arg_def_t *main_args[] =
{
919
    &debugmode,
920 921
    &outputfile, &codecarg, &passes, &pass_arg, &fpf_name, &limit, &deadline,
    &best_dl, &good_dl, &rt_dl,
922
    &verbosearg, &psnrarg, &use_ivf, &q_hist_n, &rate_hist_n,
John Koleszar's avatar
John Koleszar committed
923 924 925 926 927 928 929 930 931 932 933 934 935
    NULL
};

static const arg_def_t usage            = ARG_DEF("u", "usage", 1,
        "Usage profile number to use");
static const arg_def_t threads          = ARG_DEF("t", "threads", 1,
        "Max number of threads to use");
static const arg_def_t profile          = ARG_DEF(NULL, "profile", 1,
        "Bitstream profile number to use");
static const arg_def_t width            = ARG_DEF("w", "width", 1,
        "Frame width");
static const arg_def_t height           = ARG_DEF("h", "height", 1,
        "Frame height");
936 937 938 939 940 941 942 943 944 945
static const struct arg_enum_list stereo_mode_enum[] = {
    {"mono"      , STEREO_FORMAT_MONO},
    {"left-right", STEREO_FORMAT_LEFT_RIGHT},
    {"bottom-top", STEREO_FORMAT_BOTTOM_TOP},
    {"top-bottom", STEREO_FORMAT_TOP_BOTTOM},
    {"right-left", STEREO_FORMAT_RIGHT_LEFT},
    {NULL, 0}
};
static const arg_def_t stereo_mode      = ARG_DEF_ENUM(NULL, "stereo-mode", 1,
        "Stereo 3D video format", stereo_mode_enum);
John Koleszar's avatar
John Koleszar committed
946 947 948 949 950 951 952 953 954 955
static const arg_def_t timebase         = ARG_DEF(NULL, "timebase", 1,
        "Stream timebase (frame duration)");
static const arg_def_t error_resilient  = ARG_DEF(NULL, "error-resilient", 1,
        "Enable error resiliency features");
static const arg_def_t lag_in_frames    = ARG_DEF(NULL, "lag-in-frames", 1,
        "Max number of frames to lag");

static const arg_def_t *global_args[] =
{
    &use_yv12, &use_i420, &usage, &threads, &profile,
956
    &width, &height, &stereo_mode, &timebase, &framerate, &error_resilient,
John Koleszar's avatar
John Koleszar committed
957 958 959 960 961 962 963 964 965 966 967
    &lag_in_frames, NULL
};

static const arg_def_t dropframe_thresh   = ARG_DEF(NULL, "drop-frame", 1,
        "Temporal resampling threshold (buf %)");
static const arg_def_t resize_allowed     = ARG_DEF(NULL, "resize-allowed", 1,
        "Spatial resampling enabled (bool)");
static const arg_def_t resize_up_thresh   = ARG_DEF(NULL, "resize-up", 1,
        "Upscale threshold (buf %)");
static const arg_def_t resize_down_thresh = ARG_DEF(NULL, "resize-down", 1,
        "Downscale threshold (buf %)");
968 969 970 971 972 973 974 975
static const struct arg_enum_list end_usage_enum[] = {
    {"vbr", VPX_VBR},
    {"cbr", VPX_CBR},
    {"cq",  VPX_CQ},
    {NULL, 0}
};
static const arg_def_t end_usage          = ARG_DEF_ENUM(NULL, "end-usage", 1,
        "Rate control mode", end_usage_enum);
John Koleszar's avatar
John Koleszar committed
976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991
static const arg_def_t target_bitrate     = ARG_DEF(NULL, "target-bitrate", 1,
        "Bitrate (kbps)");
static const arg_def_t min_quantizer      = ARG_DEF(NULL, "min-q", 1,
        "Minimum (best) quantizer");
static const arg_def_t max_quantizer      = ARG_DEF(NULL, "max-q", 1,
        "Maximum (worst) quantizer");
static const arg_def_t undershoot_pct     = ARG_DEF(NULL, "undershoot-pct", 1,
        "Datarate undershoot (min) target (%)");
static const arg_def_t overshoot_pct      = ARG_DEF(NULL, "overshoot-pct", 1,
        "Datarate overshoot (max) target (%)");
static const arg_def_t buf_sz             = ARG_DEF(NULL, "buf-sz", 1,
        "Client buffer size (ms)");
static const arg_def_t buf_initial_sz     = ARG_DEF(NULL, "buf-initial-sz", 1,
        "Client initial buffer size (ms)");
static const arg_def_t buf_optimal_sz     = ARG_DEF(NULL, "buf-optimal-sz", 1,
        "Client optimal buffer size (ms)");
992 993
static const arg_def_t max_intra_rate_pct = ARG_DEF(NULL, "max-intra-rate", 1,
        "Max I-frame bitrate (pct)");
John Koleszar's avatar
John Koleszar committed
994 995 996 997 998
static const arg_def_t *rc_args[] =
{
    &dropframe_thresh, &resize_allowed, &resize_up_thresh, &resize_down_thresh,
    &end_usage, &target_bitrate, &min_quantizer, &max_quantizer,
    &undershoot_pct, &overshoot_pct, &buf_sz, &buf_initial_sz, &buf_optimal_sz,
999
    &max_intra_rate_pct,
John Koleszar's avatar
John Koleszar committed
1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019
    NULL
};


static const arg_def_t bias_pct = ARG_DEF(NULL, "bias-pct", 1,
                                  "CBR/VBR bias (0=CBR, 100=VBR)");
static const arg_def_t minsection_pct = ARG_DEF(NULL, "minsection-pct", 1,
                                        "GOP min bitrate (% of target)");
static const arg_def_t maxsection_pct = ARG_DEF(NULL, "maxsection-pct", 1,
                                        "GOP max bitrate (% of target)");
static const arg_def_t *rc_twopass_args[] =
{
    &bias_pct, &minsection_pct, &maxsection_pct, NULL
};


static const arg_def_t kf_min_dist = ARG_DEF(NULL, "kf-min-dist", 1,
                                     "Minimum keyframe interval (frames)");
static const arg_def_t kf_max_dist = ARG_DEF(NULL, "kf-max-dist", 1,
                                     "Maximum keyframe interval (frames)");
1020 1021
static const arg_def_t kf_disabled = ARG_DEF(NULL, "disable-kf", 0,
                                     "Disable keyframe placement");
John Koleszar's avatar
John Koleszar committed
1022 1023
static const arg_def_t *kf_args[] =
{
1024
    &kf_min_dist, &kf_max_dist, &kf_disabled, NULL
John Koleszar's avatar
John Koleszar committed
1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048
};


#if CONFIG_VP8_ENCODER
static const arg_def_t noise_sens = ARG_DEF(NULL, "noise-sensitivity", 1,
                                    "Noise sensitivity (frames to blur)");
static const arg_def_t sharpness = ARG_DEF(NULL, "sharpness", 1,
                                   "Filter sharpness (0-7)");
static const arg_def_t static_thresh = ARG_DEF(NULL, "static-thresh", 1,
                                       "Motion detection threshold");
#endif

#if CONFIG_VP8_ENCODER
static const arg_def_t cpu_used = ARG_DEF(NULL, "cpu-used", 1,
                                  "CPU Used (-16..16)");
#endif


#if CONFIG_VP8_ENCODER
static const arg_def_t token_parts = ARG_DEF(NULL, "token-parts", 1,
                                     "Number of token partitions to use, log2");
static const arg_def_t auto_altref = ARG_DEF(NULL, "auto-alt-ref", 1,
                                     "Enable automatic alt reference frames");
static const arg_def_t arnr_maxframes = ARG_DEF(NULL, "arnr-maxframes", 1,
1049
                                        "AltRef Max Frames");
John Koleszar's avatar
John Koleszar committed
1050
static const arg_def_t arnr_strength = ARG_DEF(NULL, "arnr-strength", 1,
1051
                                       "AltRef Strength");
John Koleszar's avatar
John Koleszar committed
1052
static const arg_def_t arnr_type = ARG_DEF(NULL, "arnr-type", 1,
1053
                                   "AltRef Type");
John Koleszar's avatar
John Koleszar committed
1054 1055 1056 1057 1058 1059 1060
static const struct arg_enum_list tuning_enum[] = {
    {"psnr", VP8_TUNE_PSNR},
    {"ssim", VP8_TUNE_SSIM},
    {NULL, 0}
};
static const arg_def_t tune_ssim = ARG_DEF_ENUM(NULL, "tune", 1,
                                   "Material to favor", tuning_enum);
Paul Wilkins's avatar
CQ Mode  
Paul Wilkins committed
1061 1062
static const arg_def_t cq_level = ARG_DEF(NULL, "cq-level", 1,
                                   "Constrained Quality Level");
John Koleszar's avatar
John Koleszar committed
1063 1064 1065 1066

static const arg_def_t *vp8_args[] =
{
    &cpu_used, &auto_altref, &noise_sens, &sharpness, &static_thresh,
John Koleszar's avatar
John Koleszar committed
1067
    &token_parts, &arnr_maxframes, &arnr_strength, &arnr_type,
Paul Wilkins's avatar
CQ Mode  
Paul Wilkins committed
1068
    &tune_ssim, &cq_level, NULL
John Koleszar's avatar
John Koleszar committed
1069 1070 1071 1072 1073 1074
};
static const int vp8_arg_ctrl_map[] =
{
    VP8E_SET_CPUUSED, VP8E_SET_ENABLEAUTOALTREF,
    VP8E_SET_NOISE_SENSITIVITY, VP8E_SET_SHARPNESS, VP8E_SET_STATIC_THRESHOLD,
    VP8E_SET_TOKEN_PARTITIONS,
John Koleszar's avatar
John Koleszar committed
1075
    VP8E_SET_ARNR_MAXFRAMES, VP8E_SET_ARNR_STRENGTH , VP8E_SET_ARNR_TYPE,
Paul Wilkins's avatar
CQ Mode  
Paul Wilkins committed
1076
    VP8E_SET_TUNING, VP8E_SET_CQ_LEVEL, 0
John Koleszar's avatar
John Koleszar committed
1077 1078 1079 1080 1081 1082 1083 1084 1085
};
#endif

static const arg_def_t *no_args[] = { NULL };

static void usage_exit()
{
    int i;

1086 1087
    fprintf(stderr, "Usage: %s <options> -o dst_filename src_filename \n",
            exec_name);
John Koleszar's avatar
John Koleszar committed
1088

1089
    fprintf(stderr, "\nOptions:\n");
John Koleszar's avatar
John Koleszar committed
1090
    arg_show_usage(stdout, main_args);
1091
    fprintf(stderr, "\nEncoder Global Options:\n");
John Koleszar's avatar
John Koleszar committed
1092
    arg_show_usage(stdout, global_args);
1093
    fprintf(stderr, "\nRate Control Options:\n");
John Koleszar's avatar
John Koleszar committed
1094
    arg_show_usage(stdout, rc_args);
1095
    fprintf(stderr, "\nTwopass Rate Control Options:\n");
John Koleszar's avatar
John Koleszar committed
1096
    arg_show_usage(stdout, rc_twopass_args);
1097
    fprintf(stderr, "\nKeyframe Placement Options:\n");
John Koleszar's avatar
John Koleszar committed
1098 1099
    arg_show_usage(stdout, kf_args);
#if CONFIG_VP8_ENCODER
1100
    fprintf(stderr, "\nVP8 Specific Options:\n");
John Koleszar's avatar
John Koleszar committed
1101 1102
    arg_show_usage(stdout, vp8_args);
#endif
1103
    fprintf(stderr, "\n"
John Koleszar's avatar
John Koleszar committed
1104 1105 1106 1107
           "Included encoders:\n"
           "\n");

    for (i = 0; i < sizeof(codecs) / sizeof(codecs[0]); i++)
1108
        fprintf(stderr, "    %-6s - %s\n",
John Koleszar's avatar
John Koleszar committed
1109 1110 1111 1112 1113 1114
               codecs[i].name,
               vpx_codec_iface_name(codecs[i].iface));

    exit(EXIT_FAILURE);
}

1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205

#define HIST_BAR_MAX 40
struct hist_bucket
{
    int low, high, count;
};


static int merge_hist_buckets(struct hist_bucket *bucket,
                              int *buckets_,
                              int max_buckets)
{
    int small_bucket = 0, merge_bucket = INT_MAX, big_bucket=0;
    int buckets = *buckets_;
    int i;

    /* Find the extrema for this list of buckets */
    big_bucket = small_bucket = 0;
    for(i=0; i < buckets; i++)
    {
        if(bucket[i].count < bucket[small_bucket].count)
            small_bucket = i;
        if(bucket[i].count > bucket[big_bucket].count)
            big_bucket = i;
    }

    /* If we have too many buckets, merge the smallest with an ajacent
     * bucket.
     */
    while(buckets > max_buckets)
    {
        int last_bucket = buckets - 1;

        // merge the small bucket with an adjacent one.
        if(small_bucket == 0)
            merge_bucket = 1;
        else if(small_bucket == last_bucket)
            merge_bucket = last_bucket - 1;
        else if(bucket[small_bucket - 1].count < bucket[small_bucket + 1].count)
            merge_bucket = small_bucket - 1;
        else
            merge_bucket = small_bucket + 1;

        assert(abs(merge_bucket - small_bucket) <= 1);
        assert(small_bucket < buckets);
        assert(big_bucket < buckets);
        assert(merge_bucket < buckets);

        if(merge_bucket < small_bucket)
        {
            bucket[merge_bucket].high = bucket[small_bucket].high;
            bucket[merge_bucket].count += bucket[small_bucket].count;
        }
        else
        {
            bucket[small_bucket].high = bucket[merge_bucket].high;
            bucket[small_bucket].count += bucket[merge_bucket].count;
            merge_bucket = small_bucket;
        }

        assert(bucket[merge_bucket].low != bucket[merge_bucket].high);

        buckets--;

        /* Remove the merge_bucket from the list, and find the new small
         * and big buckets while we're at it
         */
        big_bucket = small_bucket = 0;
        for(i=0; i < buckets; i++)
        {
            if(i > merge_bucket)
                bucket[i] = bucket[i+1];

            if(bucket[i].count < bucket[small_bucket].count)
                small_bucket = i;
            if(bucket[i].count > bucket[big_bucket].count)
                big_bucket = i;
        }

    }

    *buckets_ = buckets;
    return bucket[big_bucket].count;
}


static void show_histogram(const struct hist_bucket *bucket,
                           int                       buckets,
                           int                       total,
                           int                       scale)
{
1206
    const char *pat1, *pat2;
1207 1208
    int i;

1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241
    switch((int)(log(bucket[buckets-1].high)/log(10))+1)
    {
        case 1:
        case 2:
            pat1 = "%4d %2s: ";
            pat2 = "%4d-%2d: ";
            break;
        case 3:
            pat1 = "%5d %3s: ";
            pat2 = "%5d-%3d: ";
            break;
        case 4:
            pat1 = "%6d %4s: ";
            pat2 = "%6d-%4d: ";
            break;
        case 5:
            pat1 = "%7d %5s: ";
            pat2 = "%7d-%5d: ";
            break;
        case 6:
            pat1 = "%8d %6s: ";
            pat2 = "%8d-%6d: ";
            break;
        case 7:
            pat1 = "%9d %7s: ";
            pat2 = "%9d-%7d: ";
            break;
        default:
            pat1 = "%12d %10s: ";
            pat2 = "%12d-%10d: ";
            break;
    }

1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254
    for(i=0; i<buckets; i++)
    {
        int len;
        int j;
        float pct;

        pct = 100.0 * (float)bucket[i].count / (float)total;
        len = HIST_BAR_MAX * bucket[i].count / scale;
        if(len < 1)
            len = 1;
        assert(len <= HIST_BAR_MAX);

        if(bucket[i].low == bucket[i].high)
1255
            fprintf(stderr, pat1, bucket[i].low, "");
1256
        else
1257
            fprintf(stderr, pat2, bucket[i].low, bucket[i].high);
1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285

        for(j=0; j<HIST_BAR_MAX; j++)
            fprintf(stderr, j<len?"=":" ");
        fprintf(stderr, "\t%5d (%6.2f%%)\n",bucket[i].count,pct);
    }
}


static void show_q_histogram(const int counts[64], int max_buckets)
{
    struct hist_bucket bucket[64];
    int buckets = 0;
    int total = 0;
    int scale;
    int i;


    for(i=0; i<64; i++)
    {
        if(counts[i])
        {
            bucket[buckets].low = bucket[buckets].high = i;
            bucket[buckets].count = counts[i];
            buckets++;
            total += counts[i];
        }
    }

1286
    fprintf(stderr, "\nQuantizer Selection:\n");
1287 1288 1289 1290 1291
    scale = merge_hist_buckets(bucket, &buckets, max_buckets);
    show_histogram(bucket, buckets, total, scale);
}


1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304
#define RATE_BINS (100)
struct rate_hist
{
    int64_t            *pts;
    int                *sz;
    int                 samples;
    int                 frames;
    struct hist_bucket  bucket[RATE_BINS];
    int                 total;
};


static void init_rate_histogram(struct rate_hist          *hist,
1305 1306
                                const vpx_codec_enc_cfg_t *cfg,
                                const vpx_rational_t      *fps)
1307 1308 1309
{
    int i;

1310 1311 1312 1313 1314
    /* Determine the number of samples in the buffer. Use the file's framerate
     * to determine the number of frames in rc_buf_sz milliseconds, with an
     * adjustment (5/4) to account for alt-refs
     */
    hist->samples = cfg->rc_buf_sz * 5 / 4 * fps->num / fps->den / 1000;
1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349
    hist->pts = calloc(hist->samples, sizeof(*hist->pts));
    hist->sz = calloc(hist->samples, sizeof(*hist->sz));
    for(i=0; i<RATE_BINS; i++)
    {
        hist->bucket[i].low = INT_MAX;
        hist->bucket[i].high = 0;
        hist->bucket[i].count = 0;
    }
}


static void destroy_rate_histogram(struct rate_hist *hist)
{
    free(hist->pts);
    free(hist->sz);
}


static void update_rate_histogram(struct rate_hist          *hist,
                                  const vpx_codec_enc_cfg_t *cfg,
                                  const vpx_codec_cx_pkt_t  *pkt)
{
    int i, idx;
    int64_t now, then, sum_sz = 0, avg_bitrate;

    now = pkt->data.frame.pts * 1000
          * (uint64_t)cfg->g_timebase.num / (uint64_t)cfg->g_timebase.den;

    idx = hist->frames++ % hist->samples;
    hist->pts[idx] = now;
    hist->sz[idx] = pkt->data.frame.sz;

    if(now < cfg->rc_buf_initial_sz)
        return;

Johann's avatar
Johann committed
1350 1351
    then = now;

1352
    /* Sum the size over the past rc_buf_sz ms */
1353
    for(i = hist->frames; i > 0 && hist->frames - i < hist->samples; i--)
1354 1355 1356 1357 1358 1359 1360 1361 1362
    {
        int i_idx = (i-1) % hist->samples;

        then = hist->pts[i_idx];
        if(now - then > cfg->rc_buf_sz)
            break;
        sum_sz += hist->sz[i_idx];
    }

Johann's avatar
Johann committed
1363 1364 1365
    if (now == then)
        return;

1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399
    avg_bitrate = sum_sz * 8 * 1000 / (now - then);
    idx = avg_bitrate * (RATE_BINS/2) / (cfg->rc_target_bitrate * 1000);
    if(idx < 0)
        idx = 0;
    if(idx > RATE_BINS-1)
        idx = RATE_BINS-1;
    if(hist->bucket[idx].low > avg_bitrate)
        hist->bucket[idx].low = avg_bitrate;
    if(hist->bucket[idx].high < avg_bitrate)
        hist->bucket[idx].high = avg_bitrate;
    hist->bucket[idx].count++;
    hist->total++;
}


static void show_rate_histogram(struct rate_hist          *hist,
                                const vpx_codec_enc_cfg_t *cfg,
                                int                        max_buckets)
{
    int i, scale;
    int buckets = 0;

    for(i = 0; i < RATE_BINS; i++)
    {
        if(hist->bucket[i].low == INT_MAX)
            continue;
        hist->bucket[buckets++] = hist->bucket[i];
    }

    fprintf(stderr, "\nRate (over %dms window):\n", cfg->rc_buf_sz);
    scale = merge_hist_buckets(hist->bucket, &buckets, max_buckets);
    show_histogram(hist->bucket, buckets, hist->total, scale);
}

John Koleszar's avatar
John Koleszar committed
1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425
#define ARG_CTRL_CNT_MAX 10

int main(int argc, const char **argv_)
{
    vpx_codec_ctx_t        encoder;
    const char                  *in_fn = NULL, *out_fn = NULL, *stats_fn = NULL;
    int                    i;
    FILE                  *infile, *outfile;
    vpx_codec_enc_cfg_t    cfg;
    vpx_codec_err_t        res;
    int                    pass, one_pass_only = 0;
    stats_io_t             stats;
    vpx_image_t            raw;
    const struct codec_item  *codec = codecs;
    int                    frame_avail, got_data;

    struct arg               arg;
    char                   **argv, **argi, **argj;
    int                      arg_usage = 0, arg_passes = 1, arg_deadline = 0;
    int                      arg_ctrls[ARG_CTRL_CNT_MAX][2], arg_ctrl_cnt = 0;
    int                      arg_limit = 0;
    static const arg_def_t **ctrl_args = no_args;
    static const int        *ctrl_args_map = NULL;
    int                      verbose = 0, show_psnr = 0;
    int                      arg_use_i420 = 1;
    unsigned long            cx_time = 0;
1426 1427
    unsigned int             file_type, fourcc;
    y4m_input                y4m;
1428 1429
    struct vpx_rational      arg_framerate = {30, 1};
    int                      arg_have_framerate = 0;
John Koleszar's avatar
John Koleszar committed
1430
    int                      write_webm = 1;
John Koleszar's avatar
John Koleszar committed
1431
    EbmlGlobal               ebml = {0};
John Koleszar's avatar
John Koleszar committed
1432
    uint32_t                 hash = 0;
1433 1434 1435 1436
    uint64_t                 psnr_sse_total = 0;
    uint64_t                 psnr_samples_total = 0;
    double                   psnr_totals[4] = {0, 0, 0, 0};
    int                      psnr_count = 0;
1437
    stereo_format_t          stereo_fmt = STEREO_FORMAT_MONO;
1438 1439
    int                      counts[64]={0};
    int                      show_q_hist_buckets=0;
1440 1441
    int                      show_rate_hist_buckets=0;
    struct rate_hist         rate_hist={0};
John Koleszar's avatar
John Koleszar committed
1442 1443

    exec_name = argv_[0];
1444
    ebml.last_pts_ms = -1;
John Koleszar's avatar
John Koleszar committed
1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470