vpxenc.c 65.1 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
35
#include "vpx/vp8cx.h"
John Koleszar's avatar
John Koleszar committed
36 37
#include "vpx_ports/mem_ops.h"
#include "vpx_ports/vpx_timer.h"
John Koleszar's avatar
John Koleszar committed
38
#include "tools_common.h"
39
#include "y4minput.h"
John Koleszar's avatar
John Koleszar committed
40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59
#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
60

61 62 63 64 65 66 67 68
/* 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
69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88
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);
89 90
    vfprintf(stderr, fmt, ap);
    fprintf(stderr, "\n");
John Koleszar's avatar
John Koleszar committed
91 92 93 94 95 96 97 98 99
    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);

100
        fprintf(stderr, "%s: %s\n", s, vpx_codec_error(ctx));
John Koleszar's avatar
John Koleszar committed
101 102

        if (detail)
103
            fprintf(stderr, "    %s\n", detail);
John Koleszar's avatar
John Koleszar committed
104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165

        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
166 167
            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
168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196
            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
197
void stats_close(stats_io_t *stats, int last_pass)
John Koleszar's avatar
John Koleszar committed
198 199 200
{
    if (stats->file)
    {
James Berry's avatar
James Berry committed
201
        if (stats->pass == last_pass)
John Koleszar's avatar
John Koleszar committed
202 203 204 205 206 207 208 209 210 211 212 213 214 215
        {
#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
216
        if (stats->pass == last_pass)
John Koleszar's avatar
John Koleszar committed
217 218 219 220 221 222 223 224
            free(stats->buf.buf);
    }
}

void stats_write(stats_io_t *stats, const void *pkt, size_t len)
{
    if (stats->file)
    {
225
        if(fwrite(pkt, 1, len, stats->file));
John Koleszar's avatar
John Koleszar committed
226 227 228 229 230 231 232 233 234 235 236 237 238
    }
    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;
239 240 241 242 243 244 245
            }
            else
            {
                fprintf(stderr,
                        "\nFailed to realloc firstpass stats buffer.\n");
                exit(EXIT_FAILURE);
            }
John Koleszar's avatar
John Koleszar committed
246 247 248 249 250 251 252 253 254 255 256 257 258
        }

        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;
}

259 260 261 262 263 264 265 266 267 268
/* 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;

269 270 271 272 273 274 275
enum video_file_type
{
    FILE_TYPE_RAW,
    FILE_TYPE_IVF,
    FILE_TYPE_Y4M
};

276 277
struct detect_buffer {
    char buf[4];
278 279
    size_t buf_read;
    size_t position;
280 281 282
};


John Koleszar's avatar
John Koleszar committed
283
#define IVF_FRAME_HDR_SZ (4+8) /* 4 byte size + 8 byte timestamp */
284
static int read_frame(FILE *f, vpx_image_t *img, unsigned int file_type,
285
                      y4m_input *y4m, struct detect_buffer *detect)
John Koleszar's avatar
John Koleszar committed
286 287
{
    int plane = 0;
288
    int shortread = 0;
John Koleszar's avatar
John Koleszar committed
289

290
    if (file_type == FILE_TYPE_Y4M)
John Koleszar's avatar
John Koleszar committed
291
    {
292
        if (y4m_input_fetch_frame(y4m, f, img) < 1)
293
           return 0;
John Koleszar's avatar
John Koleszar committed
294
    }
295
    else
John Koleszar's avatar
John Koleszar committed
296
    {
297
        if (file_type == FILE_TYPE_IVF)
John Koleszar's avatar
John Koleszar committed
298
        {
299 300 301 302 303 304
            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.
             */
305
            if(fread(junk, 1, IVF_FRAME_HDR_SZ, f));
John Koleszar's avatar
John Koleszar committed
306 307
        }

308
        for (plane = 0; plane < 3; plane++)
John Koleszar's avatar
John Koleszar committed
309
        {
310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332
            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++)
            {
333 334 335 336
                size_t needed = w;
                size_t buf_position = 0;
                const size_t left = detect->buf_read - detect->position;
                if (left > 0)
337
                {
338 339 340 341 342 343 344 345 346
                    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);
347 348
                }

349 350
                ptr += img->stride[plane];
            }
John Koleszar's avatar
John Koleszar committed
351 352 353
        }
    }

354
    return !shortread;
John Koleszar's avatar
John Koleszar committed
355 356 357
}


358
unsigned int file_is_y4m(FILE      *infile,
359 360
                         y4m_input *y4m,
                         char       detect[4])
361
{
362
    if(memcmp(detect, "YUV4", 4) == 0)
363 364 365 366 367 368
    {
        return 1;
    }
    return 0;
}

John Koleszar's avatar
John Koleszar committed
369 370 371 372
#define IVF_FILE_HDR_SZ (32)
unsigned int file_is_ivf(FILE *infile,
                         unsigned int *fourcc,
                         unsigned int *width,
373
                         unsigned int *height,
374
                         struct detect_buffer *detect)
John Koleszar's avatar
John Koleszar committed
375 376 377 378
{
    char raw_hdr[IVF_FILE_HDR_SZ];
    int is_ivf = 0;

379
    if(memcmp(detect->buf, "DKIF", 4) != 0)
380 381
        return 0;

John Koleszar's avatar
John Koleszar committed
382 383 384
    /* See write_ivf_file_header() for more documentation on the file header
     * layout.
     */
385 386
    if (fread(raw_hdr + 4, 1, IVF_FILE_HDR_SZ - 4, infile)
        == IVF_FILE_HDR_SZ - 4)
John Koleszar's avatar
John Koleszar committed
387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402
    {
        {
            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);
403
        detect->position = 4;
John Koleszar's avatar
John Koleszar committed
404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433
    }

    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 */

434
    if(fwrite(header, 1, 32, outfile));
John Koleszar's avatar
John Koleszar committed
435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451
}


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);

452
    if(fwrite(header, 1, 12, outfile));
John Koleszar's avatar
John Koleszar committed
453 454
}

John Koleszar's avatar
John Koleszar committed
455 456 457 458 459 460 461 462 463 464 465 466 467

typedef off_t EbmlLoc;


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


struct EbmlGlobal
{
468 469
    int debug;

John Koleszar's avatar
John Koleszar committed
470
    FILE    *stream;
471
    int64_t last_pts_ms;
John Koleszar's avatar
John Koleszar committed
472 473 474 475 476 477 478 479 480 481
    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
482 483 484
    /* This pointer is to a specific element to be serialized */
    off_t    track_id_pos;

John Koleszar's avatar
John Koleszar committed
485 486 487 488 489 490 491 492 493 494 495 496 497 498 499
    /* 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)
{
500
    if(fwrite(buffer_in, 1, len, glob->stream));
John Koleszar's avatar
John Koleszar committed
501 502
}

503 504 505 506 507 508 509
#define WRITE_BUFFER(s) \
for(i = len-1; i>=0; i--)\
{ \
    x = *(const s *)buffer_in >> (i * CHAR_BIT); \
    Ebml_Write(glob, &x, 1); \
}
void Ebml_Serialize(EbmlGlobal *glob, const void *buffer_in, int buffer_size, unsigned long len)
John Koleszar's avatar
John Koleszar committed
510
{
511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536
    char x;
    int i;

    /* buffer_size:
     * 1 - int8_t;
     * 2 - int16_t;
     * 3 - int32_t;
     * 4 - int64_t;
     */
    switch (buffer_size)
    {
        case 1:
            WRITE_BUFFER(int8_t)
            break;
        case 2:
            WRITE_BUFFER(int16_t)
            break;
        case 4:
            WRITE_BUFFER(int32_t)
            break;
        case 8:
            WRITE_BUFFER(int64_t)
            break;
        default:
            break;
    }
John Koleszar's avatar
John Koleszar committed
537
}
538
#undef WRITE_BUFFER
John Koleszar's avatar
John Koleszar committed
539

540
/* Need a fixed size serializer for the track ID. libmkv provides a 64 bit
John Koleszar's avatar
John Koleszar committed
541 542 543 544 545 546
 * 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);
547 548
    Ebml_Serialize(glob, &sizeSerialized, sizeof(sizeSerialized), 1);
    Ebml_Serialize(glob, &ui, sizeof(ui), 4);
John Koleszar's avatar
John Koleszar committed
549 550 551
}


John Koleszar's avatar
John Koleszar committed
552 553 554 555 556
static void
Ebml_StartSubElement(EbmlGlobal *glob, EbmlLoc *ebmlLoc,
                          unsigned long class_id)
{
    //todo this is always taking 8 bytes, this may need later optimization
557
    //this is a key that says length unknown
558
    uint64_t unknownLen =  LITERALU64(0x01FFFFFFFFFFFFFF);
John Koleszar's avatar
John Koleszar committed
559 560 561

    Ebml_WriteID(glob, class_id);
    *ebmlLoc = ftello(glob->stream);
562
    Ebml_Serialize(glob, &unknownLen, sizeof(unknownLen), 8);
John Koleszar's avatar
John Koleszar committed
563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579
}

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);
580
    Ebml_Serialize(glob, &size, sizeof(size), 8);
John Koleszar's avatar
John Koleszar committed
581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625

    /* 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;
626 627 628 629 630 631 632 633 634 635 636 637
        char version_string[64];

        /* Assemble version string */
        if(ebml->debug)
            strcpy(version_string, "vpxenc");
        else
        {
            strcpy(version_string, "vpxenc ");
            strncat(version_string,
                    vpx_codec_version_str(),
                    sizeof(version_string) - 1 - strlen(version_string));
        }
John Koleszar's avatar
John Koleszar committed
638 639 640 641 642 643 644 645

        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);
646 647
        Ebml_SerializeString(ebml, 0x4D80, version_string);
        Ebml_SerializeString(ebml, 0x5741, version_string);
John Koleszar's avatar
John Koleszar committed
648 649 650 651 652 653 654 655
        Ebml_EndSubElement(ebml, &startInfo);
    }
}


static void
write_webm_file_header(EbmlGlobal                *glob,
                       const vpx_codec_enc_cfg_t *cfg,
656 657
                       const struct vpx_rational *fps,
                       stereo_format_t            stereo_fmt)
John Koleszar's avatar
John Koleszar committed
658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687
{
    {
        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
688 689
                glob->track_id_pos = ftello(glob->stream);
                Ebml_SerializeUnsigned32(glob, TrackUID, trackID);
John Koleszar's avatar
John Koleszar committed
690 691 692 693 694 695 696 697 698 699 700
                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);
701
                    Ebml_SerializeUnsigned(glob, StereoMode, stereo_fmt);
John Koleszar's avatar
John Koleszar committed
702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722
                    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;
723
    int64_t        pts_ms;
John Koleszar's avatar
John Koleszar committed
724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755
    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)
        {
756 757 758 759 760 761 762 763 764 765 766
            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
767 768 769 770 771 772 773 774 775 776 777 778 779

            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;
780
    Ebml_Serialize(glob, &block_length, sizeof(block_length), 4);
John Koleszar's avatar
John Koleszar committed
781 782 783 784 785

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

786
    Ebml_Serialize(glob, &block_timecode, sizeof(block_timecode), 2);
John Koleszar's avatar
John Koleszar committed
787 788 789 790 791 792 793 794 795 796 797 798 799

    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
800
write_webm_file_footer(EbmlGlobal *glob, long hash)
John Koleszar's avatar
John Koleszar committed
801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838
{

    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
839 840 841 842 843

    /* 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
844 845 846 847
    fseeko(glob->stream, 0, SEEK_END);
}


John Koleszar's avatar
John Koleszar committed
848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894
/* 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;
}

895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911
#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
912

John Koleszar's avatar
John Koleszar committed
913 914
#include "args.h"

915 916
static const arg_def_t debugmode = ARG_DEF("D", "debug", 0,
        "Debug mode (makes output deterministic)");
917 918
static const arg_def_t outputfile = ARG_DEF("o", "output", 1,
        "Output filename");
John Koleszar's avatar
John Koleszar committed
919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944
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");
945
static const arg_def_t framerate        = ARG_DEF(NULL, "fps", 1,
946
        "Stream frame rate (rate/scale)");
John Koleszar's avatar
John Koleszar committed
947 948
static const arg_def_t use_ivf          = ARG_DEF(NULL, "ivf", 0,
        "Output IVF (default is WebM)");
949 950
static const arg_def_t q_hist_n         = ARG_DEF(NULL, "q-hist", 1,
        "Show quantizer histogram (n-buckets)");
951 952
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
953 954
static const arg_def_t *main_args[] =
{
955
    &debugmode,
956 957
    &outputfile, &codecarg, &passes, &pass_arg, &fpf_name, &limit, &deadline,
    &best_dl, &good_dl, &rt_dl,
958
    &verbosearg, &psnrarg, &use_ivf, &q_hist_n, &rate_hist_n,
John Koleszar's avatar
John Koleszar committed
959 960 961 962 963 964 965 966 967 968 969 970 971
    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");
972 973 974 975 976 977 978 979 980 981
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
982
static const arg_def_t timebase         = ARG_DEF(NULL, "timebase", 1,
983
        "Output timestamp precision (fractional seconds)");
John Koleszar's avatar
John Koleszar committed
984 985 986 987 988 989 990 991
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,
992
    &width, &height, &stereo_mode, &timebase, &framerate, &error_resilient,
John Koleszar's avatar
John Koleszar committed
993 994 995 996 997 998 999 1000 1001 1002 1003
    &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 %)");
1004 1005 1006 1007 1008 1009 1010 1011
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
1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052
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)");
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,
    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)");
1053 1054
static const arg_def_t kf_disabled = ARG_DEF(NULL, "disable-kf", 0,
                                     "Disable keyframe placement");
John Koleszar's avatar
John Koleszar committed
1055 1056
static const arg_def_t *kf_args[] =
{
1057
    &kf_min_dist, &kf_max_dist, &kf_disabled, NULL
John Koleszar's avatar
John Koleszar committed
1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081
};


#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,
1082
                                        "AltRef Max Frames");
John Koleszar's avatar
John Koleszar committed
1083
static const arg_def_t arnr_strength = ARG_DEF(NULL, "arnr-strength", 1,
1084
                                       "AltRef Strength");
John Koleszar's avatar
John Koleszar committed
1085
static const arg_def_t arnr_type = ARG_DEF(NULL, "arnr-type", 1,
1086
                                   "AltRef Type");
John Koleszar's avatar
John Koleszar committed
1087 1088 1089 1090 1091 1092 1093
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
1094 1095
static const arg_def_t cq_level = ARG_DEF(NULL, "cq-level", 1,
                                   "Constrained Quality Level");
1096 1097
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
1098 1099 1100 1101

static const arg_def_t *vp8_args[] =
{
    &cpu_used, &auto_altref, &noise_sens, &sharpness, &static_thresh,
John Koleszar's avatar
John Koleszar committed
1102
    &token_parts, &arnr_maxframes, &arnr_strength, &arnr_type,
1103
    &tune_ssim, &cq_level, &max_intra_rate_pct, NULL
John Koleszar's avatar
John Koleszar committed
1104 1105 1106 1107 1108 1109
};
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
1110
    VP8E_SET_ARNR_MAXFRAMES, VP8E_SET_ARNR_STRENGTH , VP8E_SET_ARNR_TYPE,
1111
    VP8E_SET_TUNING, VP8E_SET_CQ_LEVEL, VP8E_SET_MAX_INTRA_BITRATE_PCT, 0
John Koleszar's avatar
John Koleszar committed
1112 1113 1114 1115 1116 1117 1118 1119 1120
};
#endif

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

static void usage_exit()
{
    int i;

1121 1122
    fprintf(stderr, "Usage: %s <options> -o dst_filename src_filename \n",
            exec_name);
John Koleszar's avatar
John Koleszar committed
1123

1124
    fprintf(stderr, "\nOptions:\n");
John Koleszar's avatar
John Koleszar committed
1125
    arg_show_usage(stdout, main_args);
1126
    fprintf(stderr, "\nEncoder Global Options:\n");
John Koleszar's avatar
John Koleszar committed
1127
    arg_show_usage(stdout, global_args);
1128
    fprintf(stderr, "\nRate Control Options:\n");
John Koleszar's avatar
John Koleszar committed
1129
    arg_show_usage(stdout, rc_args);
1130
    fprintf(stderr, "\nTwopass Rate Control Options:\n");
John Koleszar's avatar
John Koleszar committed
1131
    arg_show_usage(stdout, rc_twopass_args);
1132
    fprintf(stderr, "\nKeyframe Placement Options:\n");
John Koleszar's avatar
John Koleszar committed
1133 1134
    arg_show_usage(stdout, kf_args);
#if CONFIG_VP8_ENCODER
1135
    fprintf(stderr, "\nVP8 Specific Options:\n");
John Koleszar's avatar
John Koleszar committed
1136 1137
    arg_show_usage(stdout, vp8_args);
#endif
1138
    fprintf(stderr, "\nStream timebase (--timebase):\n"
1139
            "  The desired precision of timestamps in the output, expressed\n"
1140
            "  in fractional seconds. Default is 1/1000.\n");
1141
    fprintf(stderr, "\n"
John Koleszar's avatar
John Koleszar committed
1142 1143 1144 1145
           "Included encoders:\n"
           "\n");

    for (i = 0; i < sizeof(codecs) / sizeof(codecs[0]); i++)
1146
        fprintf(stderr, "    %-6s - %s\n",
John Koleszar's avatar
John Koleszar committed
1147 1148 1149 1150 1151 1152
               codecs[i].name,
               vpx_codec_iface_name(codecs[i].iface));

    exit(EXIT_FAILURE);
}

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

#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;
    }

1179
    /* If we have too many buckets, merge the smallest with an adjacent
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 1206 1207 1208 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 1242 1243
     * 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)
{
1244
    const char *pat1, *pat2;
1245 1246
    int i;

1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279
    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;
    }

1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292
    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)
1293
            fprintf(stderr, pat1, bucket[i].low, "");
1294
        else
1295
            fprintf(stderr, pat2, bucket[i].low, bucket[i].high);
1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323

        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];
        }
    }

1324
    fprintf(stderr, "\nQuantizer Selection:\n");
1325 1326 1327 1328 1329
    scale = merge_hist_buckets(bucket, &buckets, max_buckets);
    show_histogram(bucket, buckets, total, scale);
}


1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342
#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,
1343 1344
                                const vpx_codec_enc_cfg_t *cfg,
                                const vpx_rational_t      *fps)
1345 1346 1347
{
    int i;

1348 1349 1350 1351 1352
    /* 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;
1353 1354 1355 1356 1357

    // prevent division by zero
    if (hist->samples == 0)
      hist->samples=1;

1358 1359 1360 1361 1362 1363 1364 1365 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
    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
1393 1394
    then = now;

1395
    /* Sum the size over the past rc_buf_sz ms */
1396
    for(i = hist->frames; i > 0 && hist->frames - i < hist->samples; i--)
1397 1398 1399 1400 1401 1402 1403 1404 1405
    {
        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
1406 1407 1408
    if (now == then)
        return;

1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 <