GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/flvenc.c Lines: 40 48 83.3 %
Date: 2019-11-18 18:00:01 Branches: 17 32 53.1 %

Line Branch Exec Source
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/*
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 * FLV Encoding specific code.
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 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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#include "flv.h"
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#include "h263.h"
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#include "h263data.h"
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#include "mpegvideo.h"
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#include "mpegvideodata.h"
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390
void ff_flv_encode_picture_header(MpegEncContext *s, int picture_number)
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{
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    int format;
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    avpriv_align_put_bits(&s->pb);
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    put_bits(&s->pb, 17, 1);
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    /* 0: H.263 escape codes 1: 11-bit escape codes */
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390
    put_bits(&s->pb, 5, (s->h263_flv - 1));
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    put_bits(&s->pb, 8,
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             (((int64_t) s->picture_number * 30 * s->avctx->time_base.num) /   // FIXME use timestamp
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              s->avctx->time_base.den) & 0xff);   /* TemporalReference */
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    if (s->width == 352 && s->height == 288)
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        format = 2;
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    else if (s->width == 176 && s->height == 144)
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        format = 3;
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    else if (s->width == 128 && s->height == 96)
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        format = 4;
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    else if (s->width == 320 && s->height == 240)
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        format = 5;
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    else if (s->width == 160 && s->height == 120)
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        format = 6;
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    else if (s->width <= 255 && s->height <= 255)
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        format = 0;   /* use 1 byte width & height */
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    else
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        format = 1;   /* use 2 bytes width & height */
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390
    put_bits(&s->pb, 3, format);   /* PictureSize */
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    if (format == 0) {
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        put_bits(&s->pb, 8, s->width);
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        put_bits(&s->pb, 8, s->height);
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    } else if (format == 1) {
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        put_bits(&s->pb, 16, s->width);
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        put_bits(&s->pb, 16, s->height);
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    }
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    put_bits(&s->pb, 2, s->pict_type == AV_PICTURE_TYPE_P);   /* PictureType */
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    put_bits(&s->pb, 1, 1);   /* DeblockingFlag: on */
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    put_bits(&s->pb, 5, s->qscale);   /* Quantizer */
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    put_bits(&s->pb, 1, 0);   /* ExtraInformation */
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    if (s->h263_aic) {
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        s->y_dc_scale_table =
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        s->c_dc_scale_table = ff_aic_dc_scale_table;
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    } else {
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390
        s->y_dc_scale_table =
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        s->c_dc_scale_table = ff_mpeg1_dc_scale_table;
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    }
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}
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187500
void ff_flv2_encode_ac_esc(PutBitContext *pb, int slevel, int level,
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                           int run, int last)
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{
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187500
    if (level < 64) { // 7-bit level
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175592
        put_bits(pb, 1, 0);
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175592
        put_bits(pb, 1, last);
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175592
        put_bits(pb, 6, run);
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        put_sbits(pb, 7, slevel);
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    } else {
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        /* 11-bit level */
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11908
        put_bits(pb, 1, 1);
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        put_bits(pb, 1, last);
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        put_bits(pb, 6, run);
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        put_sbits(pb, 11, slevel);
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    }
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187500
}
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static const AVClass flv_class = {
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    .class_name = "flv encoder",
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    .item_name  = av_default_item_name,
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    .option     = ff_mpv_generic_options,
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    .version    = LIBAVUTIL_VERSION_INT,
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};
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AVCodec ff_flv_encoder = {
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    .name           = "flv",
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    .long_name      = NULL_IF_CONFIG_SMALL("FLV / Sorenson Spark / Sorenson H.263 (Flash Video)"),
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    .type           = AVMEDIA_TYPE_VIDEO,
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    .id             = AV_CODEC_ID_FLV1,
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    .priv_data_size = sizeof(MpegEncContext),
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    .init           = ff_mpv_encode_init,
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    .encode2        = ff_mpv_encode_picture,
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    .close          = ff_mpv_encode_end,
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    .pix_fmts       = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
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                                                     AV_PIX_FMT_NONE},
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    .priv_class     = &flv_class,
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};