yading@10: /* yading@10: * FLV Encoding specific code. yading@10: * This file is part of FFmpeg. yading@10: * yading@10: * FFmpeg is free software; you can redistribute it and/or yading@10: * modify it under the terms of the GNU Lesser General Public yading@10: * License as published by the Free Software Foundation; either yading@10: * version 2.1 of the License, or (at your option) any later version. yading@10: * yading@10: * FFmpeg is distributed in the hope that it will be useful, yading@10: * but WITHOUT ANY WARRANTY; without even the implied warranty of yading@10: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU yading@10: * Lesser General Public License for more details. yading@10: * yading@10: * You should have received a copy of the GNU Lesser General Public yading@10: * License along with FFmpeg; if not, write to the Free Software yading@10: * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA yading@10: */ yading@10: yading@10: #include "mpegvideo.h" yading@10: #include "h263.h" yading@10: #include "flv.h" yading@10: yading@10: void ff_flv_encode_picture_header(MpegEncContext * s, int picture_number) yading@10: { yading@10: int format; yading@10: yading@10: avpriv_align_put_bits(&s->pb); yading@10: yading@10: put_bits(&s->pb, 17, 1); yading@10: put_bits(&s->pb, 5, (s->h263_flv-1)); /* 0: h263 escape codes 1: 11-bit escape codes */ yading@10: put_bits(&s->pb, 8, (((int64_t)s->picture_number * 30 * s->avctx->time_base.num) / //FIXME use timestamp yading@10: s->avctx->time_base.den) & 0xff); /* TemporalReference */ yading@10: if (s->width == 352 && s->height == 288) yading@10: format = 2; yading@10: else if (s->width == 176 && s->height == 144) yading@10: format = 3; yading@10: else if (s->width == 128 && s->height == 96) yading@10: format = 4; yading@10: else if (s->width == 320 && s->height == 240) yading@10: format = 5; yading@10: else if (s->width == 160 && s->height == 120) yading@10: format = 6; yading@10: else if (s->width <= 255 && s->height <= 255) yading@10: format = 0; /* use 1 byte width & height */ yading@10: else yading@10: format = 1; /* use 2 bytes width & height */ yading@10: put_bits(&s->pb, 3, format); /* PictureSize */ yading@10: if (format == 0) { yading@10: put_bits(&s->pb, 8, s->width); yading@10: put_bits(&s->pb, 8, s->height); yading@10: } else if (format == 1) { yading@10: put_bits(&s->pb, 16, s->width); yading@10: put_bits(&s->pb, 16, s->height); yading@10: } yading@10: put_bits(&s->pb, 2, s->pict_type == AV_PICTURE_TYPE_P); /* PictureType */ yading@10: put_bits(&s->pb, 1, 1); /* DeblockingFlag: on */ yading@10: put_bits(&s->pb, 5, s->qscale); /* Quantizer */ yading@10: put_bits(&s->pb, 1, 0); /* ExtraInformation */ yading@10: yading@10: if(s->h263_aic){ yading@10: s->y_dc_scale_table= yading@10: s->c_dc_scale_table= ff_aic_dc_scale_table; yading@10: }else{ yading@10: s->y_dc_scale_table= yading@10: s->c_dc_scale_table= ff_mpeg1_dc_scale_table; yading@10: } yading@10: } yading@10: yading@10: void ff_flv2_encode_ac_esc(PutBitContext *pb, int slevel, int level, int run, int last){ yading@10: if(level < 64) { // 7-bit level yading@10: put_bits(pb, 1, 0); yading@10: put_bits(pb, 1, last); yading@10: put_bits(pb, 6, run); yading@10: yading@10: put_sbits(pb, 7, slevel); yading@10: } else { yading@10: /* 11-bit level */ yading@10: put_bits(pb, 1, 1); yading@10: put_bits(pb, 1, last); yading@10: put_bits(pb, 6, run); yading@10: yading@10: put_sbits(pb, 11, slevel); yading@10: } yading@10: } yading@10: yading@10: FF_MPV_GENERIC_CLASS(flv) yading@10: yading@10: AVCodec ff_flv_encoder = { yading@10: .name = "flv", yading@10: .type = AVMEDIA_TYPE_VIDEO, yading@10: .id = AV_CODEC_ID_FLV1, yading@10: .priv_data_size = sizeof(MpegEncContext), yading@10: .init = ff_MPV_encode_init, yading@10: .encode2 = ff_MPV_encode_picture, yading@10: .close = ff_MPV_encode_end, yading@10: .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE }, yading@10: .long_name = NULL_IF_CONFIG_SMALL("FLV / Sorenson Spark / Sorenson H.263 (Flash Video)"), yading@10: .priv_class = &flv_class, yading@10: };