mirror of https://github.com/FFmpeg/FFmpeg.git
parent
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commit
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#ifndef FFMPEG_GXF_H |
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#define FFMPEG_GXF_H |
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|
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/* gxf.c */ |
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typedef enum { |
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PKT_MAP = 0xbc, |
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PKT_MEDIA = 0xbf, |
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PKT_EOS = 0xfb, |
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PKT_FLT = 0xfc, |
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PKT_UMF = 0xfd |
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} pkt_type_t; |
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#endif /* FFMPEG_GXF_H */ |
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/*
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* GXF muxer. |
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* Copyright (c) 2006 SmartJog S.A., Baptiste Coudurier <baptiste dot coudurier at smartjog dot com>. |
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* |
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* This library is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This library 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 |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; 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 "avformat.h" |
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#include "gxf.h" |
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#include "riff.h" |
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#define GXF_AUDIO_PACKET_SIZE 65536 |
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typedef struct GXFStreamContext { |
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AVCodecContext *codec; |
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FifoBuffer audio_buffer; |
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uint32_t track_type; |
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uint32_t sample_size; |
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uint32_t sample_rate; |
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uint16_t media_type; |
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uint16_t media_info; |
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uint8_t index; |
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int frame_rate_index; |
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int lines_index; |
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int fields; |
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int iframes; |
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int pframes; |
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int bframes; |
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int p_per_gop; |
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int b_per_gop; |
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} GXFStreamContext; |
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typedef struct GXFContext { |
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uint32_t nb_frames; |
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uint32_t material_flags; |
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uint16_t audio_tracks; |
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uint16_t mpeg_tracks; |
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int64_t creation_time; |
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uint32_t umf_start_offset; |
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uint32_t umf_track_offset; |
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uint32_t umf_media_offset; |
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uint32_t umf_user_data_offset; |
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uint32_t umf_user_data_size; |
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uint32_t umf_length; |
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uint16_t umf_track_size; |
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uint16_t umf_media_size; |
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int audio_written; |
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int sample_rate; |
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int field_number; |
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int flags; |
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AVFormatContext *fc; |
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GXFStreamContext streams[48]; |
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} GXFContext; |
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typedef struct GXF_Lines { |
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int height; |
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int index; |
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} GXF_Lines; |
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/* FIXME check if it is relevant */ |
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static const GXF_Lines gxf_lines_tab[] = { |
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{ 480, 1 }, /* NTSC */ |
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{ 512, 1 }, /* NTSC + VBI */ |
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{ 576, 2 }, /* PAL */ |
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{ 608, 2 }, /* PAL + VBI */ |
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{ 1080, 4 }, |
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{ 720, 6 }, |
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}; |
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static const CodecTag gxf_media_types[] = { |
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{ CODEC_ID_MJPEG , 3 }, /* NTSC */ |
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{ CODEC_ID_MJPEG , 4 }, /* PAL */ |
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{ CODEC_ID_PCM_S24LE , 9 }, |
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{ CODEC_ID_PCM_S16LE , 10 }, |
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{ CODEC_ID_MPEG2VIDEO, 11 }, /* NTSC */ |
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{ CODEC_ID_MPEG2VIDEO, 12 }, /* PAL */ |
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{ CODEC_ID_DVVIDEO , 13 }, /* NTSC */ |
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{ CODEC_ID_DVVIDEO , 14 }, /* PAL */ |
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{ CODEC_ID_DVVIDEO , 15 }, /* 50M NTSC */ |
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{ CODEC_ID_DVVIDEO , 16 }, /* 50M PAL */ |
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{ CODEC_ID_AC3 , 17 }, |
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//{ CODEC_ID_NONE, , 18 }, /* Non compressed 24 bit audio */
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{ CODEC_ID_MPEG2VIDEO, 20 }, /* MPEG HD */ |
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{ CODEC_ID_MPEG1VIDEO, 22 }, /* NTSC */ |
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{ CODEC_ID_MPEG1VIDEO, 23 }, /* PAL */ |
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{ 0, 0 }, |
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}; |
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#define SERVER_PATH "/space/" |
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#define ES_NAME_PATTERN "ES." |
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static int gxf_find_lines_index(GXFStreamContext *ctx) |
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{ |
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int i; |
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for (i = 0; i < 6; ++i) { |
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if (ctx->codec->height == gxf_lines_tab[i].height) { |
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ctx->lines_index = gxf_lines_tab[i].index; |
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return 0; |
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} |
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} |
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return -1; |
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} |
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static void gxf_write_padding(ByteIOContext *pb, offset_t to_pad) |
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{ |
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while (to_pad--) { |
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put_byte(pb, 0); |
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} |
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} |
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static offset_t updatePacketSize(ByteIOContext *pb, offset_t pos) |
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{ |
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offset_t curpos; |
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int size; |
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size = url_ftell(pb) - pos; |
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if (size % 4) { |
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gxf_write_padding(pb, 4 - size % 4); |
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size = url_ftell(pb) - pos; |
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} |
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curpos = url_ftell(pb); |
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url_fseek(pb, pos + 6, SEEK_SET); |
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put_be32(pb, size); |
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url_fseek(pb, curpos, SEEK_SET); |
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return curpos - pos; |
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} |
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static offset_t updateSize(ByteIOContext *pb, offset_t pos) |
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{ |
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offset_t curpos; |
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curpos = url_ftell(pb); |
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url_fseek(pb, pos, SEEK_SET); |
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put_be16(pb, curpos - pos - 2); |
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url_fseek(pb, curpos, SEEK_SET); |
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return curpos - pos; |
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} |
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static void gxf_write_packet_header(ByteIOContext *pb, pkt_type_t type) |
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{ |
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put_be32(pb, 0); /* packet leader for synchro */ |
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put_byte(pb, 1); |
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put_byte(pb, type); /* map packet */ |
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put_be32(pb, 0); /* size */ |
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put_be32(pb, 0); /* reserved */ |
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put_byte(pb, 0xE1); /* trailer 1 */ |
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put_byte(pb, 0xE2); /* trailer 2 */ |
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} |
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static int gxf_write_mpeg_auxiliary(ByteIOContext *pb, GXFStreamContext *ctx) |
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{ |
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char buffer[1024]; |
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int size; |
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if (ctx->iframes) { |
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ctx->p_per_gop = ctx->pframes / ctx->iframes; |
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if (ctx->pframes % ctx->iframes) |
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ctx->p_per_gop++; |
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if (ctx->pframes) |
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ctx->b_per_gop = ctx->bframes / ctx->pframes; |
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if (ctx->p_per_gop > 9) |
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ctx->p_per_gop = 9; /* ensure value won't take more than one char */ |
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if (ctx->b_per_gop > 9) |
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ctx->b_per_gop = 9; /* ensure value won't take more than one char */ |
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} |
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size = snprintf(buffer, 1024, "Ver 1\nBr %.6f\nIpg 1\nPpi %d\nBpiop %d\n" |
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"Pix 0\nCf %d\nCg 1\nSl 7\nnl16 %d\nVi 1\nf1 1\n", |
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(float)ctx->codec->bit_rate, ctx->p_per_gop, ctx->b_per_gop, |
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ctx->codec->pix_fmt == PIX_FMT_YUV422P ? 2 : 1, |
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ctx->codec->height / 16); |
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put_byte(pb, 0x4F); |
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put_byte(pb, size + 1); |
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put_buffer(pb, (uint8_t *)buffer, size + 1); |
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return size + 3; |
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} |
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static int gxf_write_timecode_auxiliary(ByteIOContext *pb, GXFStreamContext *ctx) |
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{ |
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/* FIXME implement that */ |
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put_byte(pb, 0); /* fields */ |
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put_byte(pb, 0); /* seconds */ |
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put_byte(pb, 0); /* minutes */ |
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put_byte(pb, 0); /* flags + hours */ |
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/* reserved */ |
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put_be32(pb, 0); |
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return 8; |
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} |
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static int gxf_write_track_description(ByteIOContext *pb, GXFStreamContext *stream) |
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{ |
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offset_t pos; |
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/* track description section */ |
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put_byte(pb, stream->media_type + 0x80); |
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put_byte(pb, stream->index + 0xC0); |
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pos = url_ftell(pb); |
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put_be16(pb, 0); /* size */ |
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/* media file name */ |
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put_byte(pb, 0x4C); |
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put_byte(pb, strlen(ES_NAME_PATTERN) + 3); |
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put_tag(pb, ES_NAME_PATTERN); |
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put_be16(pb, stream->media_info); |
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put_byte(pb, 0); |
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if (stream->codec->codec_id != CODEC_ID_MPEG2VIDEO) { |
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/* auxiliary information */ |
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put_byte(pb, 0x4D); |
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put_byte(pb, 8); |
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if (stream->codec->codec_id == CODEC_ID_NONE) |
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gxf_write_timecode_auxiliary(pb, stream); |
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else |
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put_le64(pb, 0); |
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} |
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/* file system version */ |
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put_byte(pb, 0x4E); |
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put_byte(pb, 4); |
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put_be32(pb, 0); |
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if (stream->codec->codec_id == CODEC_ID_MPEG2VIDEO) |
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gxf_write_mpeg_auxiliary(pb, stream); |
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/* frame rate */ |
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put_byte(pb, 0x50); |
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put_byte(pb, 4); |
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put_be32(pb, stream->frame_rate_index); |
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/* lines per frame */ |
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put_byte(pb, 0x51); |
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put_byte(pb, 4); |
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put_be32(pb, stream->lines_index); |
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/* fields per frame */ |
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put_byte(pb, 0x52); |
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put_byte(pb, 4); |
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put_be32(pb, stream->fields); |
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return updateSize(pb, pos); |
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} |
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static int gxf_write_material_data_section(ByteIOContext *pb, GXFContext *ctx) |
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{ |
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offset_t pos; |
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const char *filename = strrchr(ctx->fc->filename, '/'); |
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pos = url_ftell(pb); |
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put_be16(pb, 0); /* size */ |
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/* name */ |
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if (filename) |
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filename++; |
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else |
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filename = ctx->fc->filename; |
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put_byte(pb, 0x40); |
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put_byte(pb, strlen(SERVER_PATH) + strlen(filename) + 1); |
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put_tag(pb, SERVER_PATH); |
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put_tag(pb, filename); |
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put_byte(pb, 0); |
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/* first field */ |
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put_byte(pb, 0x41); |
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put_byte(pb, 4); |
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put_be32(pb, 0); |
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/* last field */ |
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put_byte(pb, 0x42); |
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put_byte(pb, 4); |
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put_be32(pb, ctx->nb_frames); |
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/* reserved */ |
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put_byte(pb, 0x43); |
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put_byte(pb, 4); |
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put_be32(pb, 0); |
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put_byte(pb, 0x44); |
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put_byte(pb, 4); |
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put_be32(pb, ctx->nb_frames); |
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/* estimated size */ |
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put_byte(pb, 0x45); |
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put_byte(pb, 4); |
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put_be32(pb, url_fsize(pb) / 1024); |
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return updateSize(pb, pos); |
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} |
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static int gxf_write_track_description_section(ByteIOContext *pb, GXFContext *ctx) |
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{ |
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offset_t pos; |
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int i; |
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pos = url_ftell(pb); |
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put_be16(pb, 0); /* size */ |
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for (i = 0; i < ctx->fc->nb_streams; ++i) |
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gxf_write_track_description(pb, &ctx->streams[i]); |
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return updateSize(pb, pos); |
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} |
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static int gxf_write_map_packet(ByteIOContext *pb, GXFContext *ctx) |
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{ |
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offset_t pos = url_ftell(pb); |
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gxf_write_packet_header(pb, PKT_MAP); |
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/* preamble */ |
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put_byte(pb, 0xE0); /* version */ |
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put_byte(pb, 0xFF); /* reserved */ |
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gxf_write_material_data_section(pb, ctx); |
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gxf_write_track_description_section(pb, ctx); |
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return updatePacketSize(pb, pos); |
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} |
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#if 0 |
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static int gxf_write_flt_packet(ByteIOContext *pb, GXFContext *ctx) |
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{ |
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offset_t pos = url_ftell(pb); |
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int i; |
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gxf_write_packet_header(pb, PKT_FLT); |
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put_le32(pb, 1000); /* number of fields */ |
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put_le32(pb, 0); /* number of active flt entries */ |
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for (i = 0; i < 1000; ++i) { |
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put_le32(pb, 0); |
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} |
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return updatePacketSize(pb, pos); |
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} |
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#endif |
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static int gxf_write_umf_material_description(ByteIOContext *pb, GXFContext *ctx) |
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{ |
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put_le32(pb, ctx->flags); |
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put_le32(pb, ctx->nb_frames); /* length of the longest track */ |
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put_le32(pb, ctx->nb_frames); /* length of the shortest track */ |
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put_le32(pb, 0); /* mark in */ |
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put_le32(pb, ctx->nb_frames); /* mark out */ |
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put_le32(pb, 0); /* timecode mark in */ |
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put_le32(pb, ctx->nb_frames); /* timecode mark out */ |
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put_le64(pb, ctx->fc->timestamp); /* modification time */ |
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put_le64(pb, ctx->fc->timestamp); /* creation time */ |
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put_le16(pb, 0); /* reserved */ |
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put_le16(pb, 0); /* reserved */ |
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put_le16(pb, ctx->audio_tracks); |
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put_le16(pb, 0); /* timecode track count */ |
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put_le16(pb, 0); /* reserved */ |
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put_le16(pb, ctx->mpeg_tracks); |
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return 48; |
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} |
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static int gxf_write_umf_payload(ByteIOContext *pb, GXFContext *ctx) |
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{ |
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put_le32(pb, ctx->umf_length); /* total length of the umf data */ |
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put_le32(pb, 3); /* version */ |
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put_le32(pb, ctx->fc->nb_streams); |
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put_le32(pb, ctx->umf_track_offset); /* umf track section offset */ |
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put_le32(pb, ctx->umf_track_size); |
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put_le32(pb, ctx->fc->nb_streams); |
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put_le32(pb, ctx->umf_media_offset); |
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put_le32(pb, ctx->umf_media_size); |
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put_le32(pb, ctx->umf_user_data_offset); /* user data offset */ |
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put_le32(pb, ctx->umf_user_data_size); /* user data size */ |
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put_le32(pb, 0); /* reserved */ |
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put_le32(pb, 0); /* reserved */ |
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return 48; |
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} |
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static int gxf_write_umf_track_description(ByteIOContext *pb, GXFContext *ctx) |
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{ |
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offset_t pos = url_ftell(pb); |
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int tracks[255]={0}; |
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int i; |
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ctx->umf_track_offset = pos - ctx->umf_start_offset; |
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for (i = 0; i < ctx->fc->nb_streams; ++i) { |
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AVStream *st = ctx->fc->streams[i]; |
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GXFStreamContext *sc = &ctx->streams[i]; |
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int id = 0; |
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switch (st->codec->codec_id) { |
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case CODEC_ID_MPEG1VIDEO: id= 'L'; break; |
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case CODEC_ID_MPEG2VIDEO: id= 'M'; break; |
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case CODEC_ID_PCM_S16LE: id= 'A'; break; |
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case CODEC_ID_DVVIDEO: id= sc->track_type == 6 ? 'E' : 'D'; break; |
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case CODEC_ID_MJPEG: id= 'V'; break; |
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} |
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sc->media_info= id << 8; |
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/* FIXME first 10 audio tracks are 0 to 9 next 22 are A to V */ |
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sc->media_info |= '0' + (tracks[id]++); |
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put_le16(pb, sc->media_info); |
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put_le16(pb, 1); |
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} |
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return url_ftell(pb) - pos; |
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} |
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static int gxf_write_umf_media_mpeg(ByteIOContext *pb, GXFStreamContext *stream) |
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{ |
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if (stream->codec->pix_fmt == PIX_FMT_YUV422P) |
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put_le32(pb, 2); |
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else |
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put_le32(pb, 1); /* default to 420 */ |
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put_le32(pb, 1); /* closed = 1, open = 0, unknown = 255 */ |
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put_le32(pb, 3); /* top = 1, bottom = 2, frame = 3, unknown = 0 */ |
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put_le32(pb, 1); /* I picture per GOP */ |
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put_le32(pb, stream->p_per_gop); |
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put_le32(pb, stream->b_per_gop); |
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if (stream->codec->codec_id == CODEC_ID_MPEG2VIDEO) |
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put_le32(pb, 2); |
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else if (stream->codec->codec_id == CODEC_ID_MPEG1VIDEO) |
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put_le32(pb, 1); |
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else |
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put_le32(pb, 0); |
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put_le32(pb, 0); /* reserved */ |
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return 32; |
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} |
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static int gxf_write_umf_media_timecode(ByteIOContext *pb, GXFStreamContext *track) |
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{ |
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/* FIXME implement */ |
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put_be32(pb, 0); /* drop frame flag */ |
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put_be32(pb, 0); /* reserved */ |
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put_be32(pb, 0); /* reserved */ |
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put_be32(pb, 0); /* reserved */ |
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put_be32(pb, 0); /* reserved */ |
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put_be32(pb, 0); /* reserved */ |
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put_be32(pb, 0); /* reserved */ |
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put_be32(pb, 0); /* reserved */ |
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return 32; |
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} |
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static int gxf_write_umf_media_dv(ByteIOContext *pb, GXFStreamContext *track) |
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{ |
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int i; |
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for (i = 0; i < 8; i++) { |
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put_be32(pb, 0); |
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} |
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return 32; |
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} |
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static int gxf_write_umf_media_audio(ByteIOContext *pb, GXFStreamContext *track) |
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{ |
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put_le64(pb, av_dbl2int(1)); /* sound level to begin to */ |
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put_le64(pb, av_dbl2int(1)); /* sound level to begin to */ |
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put_le32(pb, 0); /* number of fields over which to ramp up sound level */ |
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put_le32(pb, 0); /* number of fields over which to ramp down sound level */ |
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put_le32(pb, 0); /* reserved */ |
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put_le32(pb, 0); /* reserved */ |
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return 32; |
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} |
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#if 0 |
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static int gxf_write_umf_media_mjpeg(ByteIOContext *pb, GXFStreamContext *track) |
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{ |
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put_be64(pb, 0); /* FIXME FLOAT max chroma quant level */ |
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put_be64(pb, 0); /* FIXME FLOAT max luma quant level */ |
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put_be64(pb, 0); /* FIXME FLOAT min chroma quant level */ |
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put_be64(pb, 0); /* FIXME FLOAT min luma quant level */ |
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return 32; |
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} |
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#endif |
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static int gxf_write_umf_media_description(ByteIOContext *pb, GXFContext *ctx) |
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{ |
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offset_t pos; |
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int i; |
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|
||||
pos = url_ftell(pb); |
||||
ctx->umf_media_offset = pos - ctx->umf_start_offset; |
||||
for (i = 0; i < ctx->fc->nb_streams; ++i) { |
||||
GXFStreamContext *sc = &ctx->streams[i]; |
||||
char buffer[88]; |
||||
offset_t startpos, curpos; |
||||
int path_size = strlen(ES_NAME_PATTERN); |
||||
|
||||
startpos = url_ftell(pb); |
||||
put_le16(pb, 0); /* length */ |
||||
put_le16(pb, sc->media_info); |
||||
put_le16(pb, 0); /* reserved */ |
||||
put_le16(pb, 0); /* reserved */ |
||||
put_le32(pb, ctx->nb_frames); |
||||
put_le32(pb, 0); /* attributes rw, ro */ |
||||
put_le32(pb, 0); /* mark in */ |
||||
put_le32(pb, ctx->nb_frames); /* mark out */ |
||||
strncpy(buffer, ES_NAME_PATTERN, path_size); |
||||
put_buffer(pb, (uint8_t *)buffer, path_size); |
||||
put_be16(pb, sc->media_info); |
||||
put_buffer(pb, (uint8_t *)buffer + path_size + 2, 88 - path_size - 2); |
||||
put_le32(pb, sc->track_type); |
||||
put_le32(pb, sc->sample_rate); |
||||
put_le32(pb, sc->sample_size); |
||||
put_le32(pb, 0); /* reserved */ |
||||
switch (sc->codec->codec_id) { |
||||
case CODEC_ID_MPEG2VIDEO: |
||||
gxf_write_umf_media_mpeg(pb, sc); |
||||
break; |
||||
case CODEC_ID_PCM_S16LE: |
||||
gxf_write_umf_media_audio(pb, sc); |
||||
break; |
||||
case CODEC_ID_DVVIDEO: |
||||
gxf_write_umf_media_dv(pb, sc); |
||||
break; |
||||
default: |
||||
gxf_write_umf_media_timecode(pb, sc); /* 8 0bytes */ |
||||
} |
||||
curpos = url_ftell(pb); |
||||
url_fseek(pb, startpos, SEEK_SET); |
||||
put_le16(pb, curpos - startpos); |
||||
url_fseek(pb, curpos, SEEK_SET); |
||||
} |
||||
return url_ftell(pb) - pos; |
||||
} |
||||
|
||||
static int gxf_write_umf_user_data(ByteIOContext *pb, GXFContext *ctx) |
||||
{ |
||||
offset_t pos = url_ftell(pb); |
||||
ctx->umf_user_data_offset = pos - ctx->umf_start_offset; |
||||
put_le32(pb, 20); |
||||
put_le32(pb, 0); |
||||
put_le16(pb, 0); |
||||
put_le16(pb, 0); |
||||
put_le32(pb, 0); |
||||
put_byte(pb, 0); |
||||
put_byte(pb, 0); |
||||
put_byte(pb, 0); |
||||
put_byte(pb, 0); |
||||
return 20; |
||||
} |
||||
|
||||
static int gxf_write_umf_packet(ByteIOContext *pb, GXFContext *ctx) |
||||
{ |
||||
offset_t pos = url_ftell(pb); |
||||
|
||||
gxf_write_packet_header(pb, PKT_UMF); |
||||
|
||||
/* preamble */ |
||||
put_byte(pb, 3); /* first and last (only) packet */ |
||||
put_be32(pb, ctx->umf_length); /* data length */ |
||||
|
||||
ctx->umf_start_offset = url_ftell(pb); |
||||
gxf_write_umf_payload(pb, ctx); |
||||
gxf_write_umf_material_description(pb, ctx); |
||||
ctx->umf_track_size = gxf_write_umf_track_description(pb, ctx); |
||||
ctx->umf_media_size = gxf_write_umf_media_description(pb, ctx); |
||||
ctx->umf_user_data_size = gxf_write_umf_user_data(pb, ctx); |
||||
ctx->umf_length = url_ftell(pb) - ctx->umf_start_offset; |
||||
return updatePacketSize(pb, pos); |
||||
} |
||||
|
||||
static int gxf_write_header(AVFormatContext *s) |
||||
{ |
||||
ByteIOContext *pb = &s->pb; |
||||
GXFContext *gxf = s->priv_data; |
||||
int i; |
||||
|
||||
gxf->fc = s; |
||||
gxf->flags |= 0x00080000; /* material is simple clip */ |
||||
for (i = 0; i < s->nb_streams; ++i) { |
||||
AVStream *st = s->streams[i]; |
||||
GXFStreamContext *sc = &gxf->streams[i]; |
||||
|
||||
sc->codec = st->codec; |
||||
sc->index = i; |
||||
sc->media_type = codec_get_tag(gxf_media_types, sc->codec->codec_id); |
||||
if (st->codec->codec_type == CODEC_TYPE_AUDIO) { |
||||
if (st->codec->codec_id != CODEC_ID_PCM_S16LE) { |
||||
av_log(s, AV_LOG_ERROR, "only 16 BIT PCM LE allowed for now\n"); |
||||
return -1; |
||||
} |
||||
if (st->codec->sample_rate != 48000) { |
||||
av_log(s, AV_LOG_ERROR, "only 48000hz sampling rate is allowed\n"); |
||||
return -1; |
||||
} |
||||
if (st->codec->channels != 1) { |
||||
av_log(s, AV_LOG_ERROR, "only mono tracks are allowed\n"); |
||||
return -1; |
||||
} |
||||
sc->track_type = 2; |
||||
sc->sample_rate = st->codec->sample_rate; |
||||
sc->sample_size = 16; |
||||
sc->frame_rate_index = -2; |
||||
sc->lines_index = -2; |
||||
sc->fields = -2; |
||||
gxf->audio_tracks++; |
||||
gxf->flags |= 0x04000000; /* audio is 16 bit pcm */ |
||||
fifo_init(&sc->audio_buffer, 3*GXF_AUDIO_PACKET_SIZE); |
||||
} else if (sc->codec->codec_type == CODEC_TYPE_VIDEO) { |
||||
/* FIXME check from time_base ? */ |
||||
if (sc->codec->height == 480 || sc->codec->height == 512) { /* NTSC or NTSC+VBI */ |
||||
sc->frame_rate_index = 5; |
||||
sc->sample_rate = 60; |
||||
gxf->flags |= 0x00000080; |
||||
} else { /* assume PAL */ |
||||
sc->frame_rate_index = 6; |
||||
sc->media_type++; |
||||
sc->sample_rate = 50; |
||||
gxf->flags |= 0x00000040; |
||||
} |
||||
gxf->sample_rate = sc->sample_rate; |
||||
if (gxf_find_lines_index(sc) < 0) |
||||
sc->lines_index = -1; |
||||
sc->sample_size = st->codec->bit_rate; |
||||
sc->fields = 2; /* interlaced */ |
||||
switch (sc->codec->codec_id) { |
||||
case CODEC_ID_MPEG2VIDEO: |
||||
sc->track_type = 4; |
||||
gxf->mpeg_tracks++; |
||||
gxf->flags |= 0x00008000; |
||||
break; |
||||
case CODEC_ID_DVVIDEO: |
||||
if (sc->codec->pix_fmt == PIX_FMT_YUV422P) { |
||||
sc->media_type += 2; |
||||
sc->track_type = 6; |
||||
gxf->flags |= 0x00002000; |
||||
} else { |
||||
sc->track_type = 5; |
||||
gxf->flags |= 0x00001000; |
||||
} |
||||
break; |
||||
default: |
||||
av_log(NULL, AV_LOG_ERROR, "video codec not supported\n"); |
||||
return -1; |
||||
} |
||||
} |
||||
} |
||||
gxf_write_map_packet(pb, gxf); |
||||
//gxf_write_flt_packet(pb, gxf);
|
||||
gxf_write_umf_packet(pb, gxf); |
||||
put_flush_packet(pb); |
||||
return 0; |
||||
} |
||||
|
||||
static int gxf_write_eos_packet(ByteIOContext *pb, GXFContext *ctx) |
||||
{ |
||||
offset_t pos = url_ftell(pb); |
||||
|
||||
gxf_write_packet_header(pb, PKT_EOS); |
||||
return updatePacketSize(pb, pos); |
||||
} |
||||
|
||||
static int gxf_write_trailer(AVFormatContext *s) |
||||
{ |
||||
ByteIOContext *pb = &s->pb; |
||||
GXFContext *gxf = s->priv_data; |
||||
offset_t end; |
||||
int i; |
||||
|
||||
for (i = 0; i < s->nb_streams; ++i) { |
||||
if (s->streams[i]->codec->codec_type == CODEC_TYPE_AUDIO) { |
||||
fifo_free(&gxf->streams[i].audio_buffer); |
||||
} |
||||
if (s->streams[i]->codec->frame_number > gxf->nb_frames) |
||||
gxf->nb_frames = 2 * s->streams[i]->codec->frame_number; |
||||
} |
||||
|
||||
gxf_write_eos_packet(pb, gxf); |
||||
end = url_ftell(pb); |
||||
url_fseek(pb, 0, SEEK_SET); |
||||
/* overwrite map and umf packets with new values */ |
||||
gxf_write_map_packet(pb, gxf); |
||||
//gxf_write_flt_packet(pb, gxf);
|
||||
gxf_write_umf_packet(pb, gxf); |
||||
url_fseek(pb, end, SEEK_SET); |
||||
return 0; |
||||
} |
||||
|
||||
static int gxf_write_media_preamble(ByteIOContext *pb, GXFContext *ctx, AVPacket *pkt, int size) |
||||
{ |
||||
GXFStreamContext *sc = &ctx->streams[pkt->stream_index]; |
||||
|
||||
put_byte(pb, sc->media_type); |
||||
put_byte(pb, sc->index); |
||||
put_be32(pb, ctx->field_number); |
||||
if (sc->codec->codec_type == CODEC_TYPE_AUDIO) { |
||||
put_be16(pb, 0); |
||||
put_be16(pb, size / 2); |
||||
} else if (sc->codec->codec_id == CODEC_ID_MPEG2VIDEO) { |
||||
if (pkt->flags & PKT_FLAG_KEY) { |
||||
put_byte(pb, 0x0d); |
||||
sc->iframes++; |
||||
} else if (pkt->pts != pkt->dts) { |
||||
put_byte(pb, 0x0f); |
||||
sc->bframes++; |
||||
} else { |
||||
put_byte(pb, 0x0e); |
||||
sc->pframes++; |
||||
} |
||||
put_be24(pb, size); |
||||
} else if (sc->codec->codec_id == CODEC_ID_DVVIDEO) { |
||||
put_byte(pb, size / 4096); |
||||
put_be24(pb, 0); |
||||
} else |
||||
put_be32(pb, size); |
||||
put_be32(pb, ctx->field_number); |
||||
put_byte(pb, 1); /* flags */ |
||||
put_byte(pb, 0); /* reserved */ |
||||
return 16; |
||||
} |
||||
|
||||
static int gxf_write_media_packet(ByteIOContext *pb, GXFContext *ctx, AVPacket *pkt) |
||||
{ |
||||
GXFStreamContext *sc = &ctx->streams[pkt->stream_index]; |
||||
offset_t pos = url_ftell(pb); |
||||
int padding = 0; |
||||
|
||||
gxf_write_packet_header(pb, PKT_MEDIA); |
||||
if (sc->codec->codec_id == CODEC_ID_MPEG2VIDEO && pkt->size % 4) /* MPEG-2 frames must be padded */ |
||||
padding = 4 - pkt->size % 4; |
||||
gxf_write_media_preamble(pb, ctx, pkt, pkt->size + padding); |
||||
if (sc->codec->codec_type == CODEC_TYPE_AUDIO) |
||||
put_buffer(pb, pkt->data, GXF_AUDIO_PACKET_SIZE); |
||||
else { |
||||
ctx->field_number += 2; |
||||
put_buffer(pb, pkt->data, pkt->size); |
||||
} |
||||
gxf_write_padding(pb, padding); |
||||
return updatePacketSize(pb, pos); |
||||
} |
||||
|
||||
static int gxf_write_packet(AVFormatContext *s, AVPacket *pkt) |
||||
{ |
||||
GXFContext *gxf = s->priv_data; |
||||
|
||||
gxf_write_media_packet(&s->pb, gxf, pkt); |
||||
put_flush_packet(&s->pb); |
||||
return 0; |
||||
} |
||||
|
||||
static int gxf_interleave_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush) |
||||
{ |
||||
AVPacketList *pktl, **next_point, *this_pktl; |
||||
GXFContext *gxf = s->priv_data; |
||||
GXFStreamContext *sc; |
||||
int i; |
||||
|
||||
if (pkt) { |
||||
sc = &gxf->streams[pkt->stream_index]; |
||||
if (sc->codec->codec_type == CODEC_TYPE_AUDIO) { |
||||
fifo_write(&sc->audio_buffer, pkt->data, pkt->size, NULL); |
||||
} else { |
||||
this_pktl = av_mallocz(sizeof(AVPacketList)); |
||||
this_pktl->pkt = *pkt; |
||||
if(pkt->destruct == av_destruct_packet) |
||||
pkt->destruct = NULL; // non shared -> must keep original from being freed
|
||||
else |
||||
av_dup_packet(&this_pktl->pkt); //shared -> must dup
|
||||
next_point = &s->packet_buffer; |
||||
while(*next_point){ |
||||
AVStream *st= s->streams[ pkt->stream_index]; |
||||
AVStream *st2= s->streams[ (*next_point)->pkt.stream_index]; |
||||
int64_t left= st2->time_base.num * (int64_t)st ->time_base.den; |
||||
int64_t right= st ->time_base.num * (int64_t)st2->time_base.den; |
||||
if((*next_point)->pkt.dts * left > pkt->dts * right) //FIXME this can overflow
|
||||
break; |
||||
next_point= &(*next_point)->next; |
||||
} |
||||
this_pktl->next = *next_point; |
||||
*next_point = this_pktl; |
||||
} |
||||
} |
||||
|
||||
if (gxf->audio_written == gxf->audio_tracks) { |
||||
if (!s->packet_buffer) { |
||||
gxf->audio_written = 0; |
||||
return 0; |
||||
} |
||||
pktl = s->packet_buffer; |
||||
*out = pktl->pkt; |
||||
s->packet_buffer = pktl->next; |
||||
av_freep(&pktl); |
||||
return 1; |
||||
} else { |
||||
for (i = 0; i < s->nb_streams; i++) { |
||||
sc = &gxf->streams[i]; |
||||
if (sc->codec->codec_type == CODEC_TYPE_AUDIO && |
||||
(flush || fifo_size(&sc->audio_buffer, NULL) >= GXF_AUDIO_PACKET_SIZE)) { |
||||
int size = flush ? fifo_size(&sc->audio_buffer, NULL) : GXF_AUDIO_PACKET_SIZE; |
||||
av_new_packet(out, GXF_AUDIO_PACKET_SIZE); |
||||
fifo_read(&sc->audio_buffer, out->data, size, NULL); |
||||
gxf->audio_written++; |
||||
out->stream_index = i; |
||||
out->size = size; |
||||
return 1; |
||||
} |
||||
} |
||||
} |
||||
av_init_packet(out); |
||||
return 0; |
||||
} |
||||
|
||||
AVOutputFormat gxf_muxer = { |
||||
"gxf", |
||||
"GXF format", |
||||
NULL, |
||||
"gxf", |
||||
sizeof(GXFContext), |
||||
CODEC_ID_PCM_S16LE, |
||||
CODEC_ID_MPEG2VIDEO, |
||||
gxf_write_header, |
||||
gxf_write_packet, |
||||
gxf_write_trailer, |
||||
0, |
||||
NULL, |
||||
gxf_interleave_packet, |
||||
}; |
Loading…
Reference in new issue