| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * FLV Encoding specific code. | ||
| 3 | * | ||
| 4 | * This file is part of FFmpeg. | ||
| 5 | * | ||
| 6 | * FFmpeg is free software; you can redistribute it and/or | ||
| 7 | * modify it under the terms of the GNU Lesser General Public | ||
| 8 | * License as published by the Free Software Foundation; either | ||
| 9 | * version 2.1 of the License, or (at your option) any later version. | ||
| 10 | * | ||
| 11 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 14 | * Lesser General Public License for more details. | ||
| 15 | * | ||
| 16 | * You should have received a copy of the GNU Lesser General Public | ||
| 17 | * License along with FFmpeg; if not, write to the Free Software | ||
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 19 | */ | ||
| 20 | |||
| 21 | #include "codec_internal.h" | ||
| 22 | #include "flvenc.h" | ||
| 23 | #include "mpegvideo.h" | ||
| 24 | #include "mpegvideoenc.h" | ||
| 25 | #include "put_bits.h" | ||
| 26 | |||
| 27 | 390 | int ff_flv_encode_picture_header(MPVMainEncContext *const m) | |
| 28 | { | ||
| 29 | 390 | MPVEncContext *const s = &m->s; | |
| 30 | int format; | ||
| 31 | |||
| 32 | 390 | put_bits_assume_flushed(&s->pb); | |
| 33 | |||
| 34 | 390 | put_bits(&s->pb, 17, 1); | |
| 35 | /* 0: H.263 escape codes 1: 11-bit escape codes */ | ||
| 36 | 390 | put_bits(&s->pb, 5, (s->c.h263_flv - 1)); | |
| 37 | 390 | put_bits(&s->pb, 8, | |
| 38 | 390 | (((int64_t) s->c.picture_number * 30 * s->c.avctx->time_base.num) / // FIXME use timestamp | |
| 39 | 390 | s->c.avctx->time_base.den) & 0xff); /* TemporalReference */ | |
| 40 |
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390 | if (s->c.width == 352 && s->c.height == 288) |
| 41 | 200 | format = 2; | |
| 42 |
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190 | else if (s->c.width == 176 && s->c.height == 144) |
| 43 | ✗ | format = 3; | |
| 44 |
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190 | else if (s->c.width == 128 && s->c.height == 96) |
| 45 | ✗ | format = 4; | |
| 46 |
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190 | else if (s->c.width == 320 && s->c.height == 240) |
| 47 | 140 | format = 5; | |
| 48 |
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50 | else if (s->c.width == 160 && s->c.height == 120) |
| 49 | ✗ | format = 6; | |
| 50 |
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50 | else if (s->c.width <= 255 && s->c.height <= 255) |
| 51 | 50 | format = 0; /* use 1 byte width & height */ | |
| 52 | else | ||
| 53 | ✗ | format = 1; /* use 2 bytes width & height */ | |
| 54 | 390 | put_bits(&s->pb, 3, format); /* PictureSize */ | |
| 55 |
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390 | if (format == 0) { |
| 56 | 50 | put_bits(&s->pb, 8, s->c.width); | |
| 57 | 50 | put_bits(&s->pb, 8, s->c.height); | |
| 58 |
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340 | } else if (format == 1) { |
| 59 | ✗ | put_bits(&s->pb, 16, s->c.width); | |
| 60 | ✗ | put_bits(&s->pb, 16, s->c.height); | |
| 61 | } | ||
| 62 | 390 | put_bits(&s->pb, 2, s->c.pict_type == AV_PICTURE_TYPE_P); /* PictureType */ | |
| 63 | 390 | put_bits(&s->pb, 1, 1); /* DeblockingFlag: on */ | |
| 64 | 390 | put_bits(&s->pb, 5, s->c.qscale); /* Quantizer */ | |
| 65 | 390 | put_bits(&s->pb, 1, 0); /* ExtraInformation */ | |
| 66 | |||
| 67 | 390 | return 0; | |
| 68 | } | ||
| 69 | |||
| 70 | 187500 | void ff_flv2_encode_ac_esc(PutBitContext *pb, int slevel, int level, | |
| 71 | int run, int last) | ||
| 72 | { | ||
| 73 |
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187500 | if (level < 64) { // 7-bit level |
| 74 | 175592 | put_bits(pb, 1, 0); | |
| 75 | 175592 | put_bits(pb, 1, last); | |
| 76 | 175592 | put_bits(pb, 6, run); | |
| 77 | |||
| 78 | 175592 | put_sbits(pb, 7, slevel); | |
| 79 | } else { | ||
| 80 | /* 11-bit level */ | ||
| 81 | 11908 | put_bits(pb, 1, 1); | |
| 82 | 11908 | put_bits(pb, 1, last); | |
| 83 | 11908 | put_bits(pb, 6, run); | |
| 84 | |||
| 85 | 11908 | put_sbits(pb, 11, slevel); | |
| 86 | } | ||
| 87 | 187500 | } | |
| 88 | |||
| 89 | const FFCodec ff_flv_encoder = { | ||
| 90 | .p.name = "flv", | ||
| 91 | CODEC_LONG_NAME("FLV / Sorenson Spark / Sorenson H.263 (Flash Video)"), | ||
| 92 | .p.type = AVMEDIA_TYPE_VIDEO, | ||
| 93 | .p.id = AV_CODEC_ID_FLV1, | ||
| 94 | .p.priv_class = &ff_mpv_enc_class, | ||
| 95 | .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE, | ||
| 96 | .priv_data_size = sizeof(MPVMainEncContext), | ||
| 97 | .init = ff_mpv_encode_init, | ||
| 98 | FF_CODEC_ENCODE_CB(ff_mpv_encode_picture), | ||
| 99 | .close = ff_mpv_encode_end, | ||
| 100 | .caps_internal = FF_CODEC_CAP_INIT_CLEANUP, | ||
| 101 | CODEC_PIXFMTS(AV_PIX_FMT_YUV420P), | ||
| 102 | .color_ranges = AVCOL_RANGE_MPEG, | ||
| 103 | }; | ||
| 104 |