/*
* GXF muxer.
- * Copyright (c) 2006 SmartJog S.A., Baptiste Coudurier <baptiste dot coudurier at smartjog dot com>.
+ * Copyright (c) 2006 SmartJog S.A., Baptiste Coudurier <baptiste dot coudurier at smartjog dot com>
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
*
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+#include "libavutil/intfloat.h"
+#include "libavutil/mathematics.h"
#include "avformat.h"
+#include "internal.h"
#include "gxf.h"
-#include "riff.h"
-#include "fifo.h"
+#include "audiointerleave.h"
#define GXF_AUDIO_PACKET_SIZE 65536
typedef struct GXFStreamContext {
- AVCodecContext *codec;
- AVFifoBuffer audio_buffer;
+ AudioInterleaveContext aic;
uint32_t track_type;
uint32_t sample_size;
uint32_t sample_rate;
uint16_t media_type;
uint16_t media_info;
- uint8_t index;
int frame_rate_index;
int lines_index;
int fields;
int pframes;
int bframes;
int p_per_gop;
- int b_per_gop;
+ int b_per_i_or_p; ///< number of B-frames per I-frame or P-frame
int first_gop_closed;
- int64_t current_dts;
+ unsigned order; ///< interleaving order
} GXFStreamContext;
typedef struct GXFContext {
- uint32_t nb_frames;
- uint32_t material_flags;
+ uint32_t nb_fields;
uint16_t audio_tracks;
uint16_t mpeg_tracks;
int64_t creation_time;
uint32_t umf_start_offset;
uint32_t umf_track_offset;
uint32_t umf_media_offset;
- uint32_t umf_user_data_offset;
- uint32_t umf_user_data_size;
uint32_t umf_length;
uint16_t umf_track_size;
uint16_t umf_media_size;
- int audio_written;
- int sample_rate;
+ AVRational time_base;
int flags;
- AVFormatContext *fc;
- GXFStreamContext streams[48];
+ GXFStreamContext timecode_track;
+ unsigned *flt_entries; ///< offsets of packets /1024, starts after 2nd video field
+ unsigned flt_entries_nb;
+ uint64_t *map_offsets; ///< offset of map packets
+ unsigned map_offsets_nb;
+ unsigned packet_count;
} GXFContext;
-typedef struct GXF_Lines {
- int height;
- int index;
-} GXF_Lines;
-
-
-/* FIXME check if it is relevant */
-static const GXF_Lines gxf_lines_tab[] = {
+static const struct {
+ int height, index;
+} gxf_lines_tab[] = {
{ 480, 1 }, /* NTSC */
{ 512, 1 }, /* NTSC + VBI */
{ 576, 2 }, /* PAL */
{ 720, 6 },
};
-static const CodecTag gxf_media_types[] = {
- { CODEC_ID_MJPEG , 3 }, /* NTSC */
- { CODEC_ID_MJPEG , 4 }, /* PAL */
- { CODEC_ID_PCM_S24LE , 9 },
- { CODEC_ID_PCM_S16LE , 10 },
- { CODEC_ID_MPEG2VIDEO, 11 }, /* NTSC */
- { CODEC_ID_MPEG2VIDEO, 12 }, /* PAL */
- { CODEC_ID_DVVIDEO , 13 }, /* NTSC */
- { CODEC_ID_DVVIDEO , 14 }, /* PAL */
- { CODEC_ID_DVVIDEO , 15 }, /* 50M NTSC */
- { CODEC_ID_DVVIDEO , 16 }, /* 50M PAL */
- { CODEC_ID_AC3 , 17 },
- //{ CODEC_ID_NONE, , 18 }, /* Non compressed 24 bit audio */
- { CODEC_ID_MPEG2VIDEO, 20 }, /* MPEG HD */
- { CODEC_ID_MPEG1VIDEO, 22 }, /* NTSC */
- { CODEC_ID_MPEG1VIDEO, 23 }, /* PAL */
- { 0, 0 },
+static const AVCodecTag gxf_media_types[] = {
+ { AV_CODEC_ID_MJPEG , 3 }, /* NTSC */
+ { AV_CODEC_ID_MJPEG , 4 }, /* PAL */
+ { AV_CODEC_ID_PCM_S24LE , 9 },
+ { AV_CODEC_ID_PCM_S16LE , 10 },
+ { AV_CODEC_ID_MPEG2VIDEO, 11 }, /* NTSC */
+ { AV_CODEC_ID_MPEG2VIDEO, 12 }, /* PAL */
+ { AV_CODEC_ID_DVVIDEO , 13 }, /* NTSC */
+ { AV_CODEC_ID_DVVIDEO , 14 }, /* PAL */
+ { AV_CODEC_ID_DVVIDEO , 15 }, /* 50M NTSC */
+ { AV_CODEC_ID_DVVIDEO , 16 }, /* 50M PAL */
+ { AV_CODEC_ID_AC3 , 17 },
+ //{ AV_CODEC_ID_NONE, , 18 }, /* Non compressed 24 bit audio */
+ { AV_CODEC_ID_MPEG2VIDEO, 20 }, /* MPEG HD */
+ { AV_CODEC_ID_MPEG1VIDEO, 22 }, /* NTSC */
+ { AV_CODEC_ID_MPEG1VIDEO, 23 }, /* PAL */
+ { AV_CODEC_ID_NONE, 0 },
};
-#define SERVER_PATH "/space/"
-#define ES_NAME_PATTERN "ES."
+#define SERVER_PATH "EXT:/PDR/default/"
+#define ES_NAME_PATTERN "EXT:/PDR/default/ES."
-static int gxf_find_lines_index(GXFStreamContext *ctx)
+static int gxf_find_lines_index(AVStream *st)
{
+ GXFStreamContext *sc = st->priv_data;
int i;
for (i = 0; i < 6; ++i) {
- if (ctx->codec->height == gxf_lines_tab[i].height) {
- ctx->lines_index = gxf_lines_tab[i].index;
+ if (st->codecpar->height == gxf_lines_tab[i].height) {
+ sc->lines_index = gxf_lines_tab[i].index;
return 0;
}
}
return -1;
}
-static void gxf_write_padding(ByteIOContext *pb, offset_t to_pad)
+static void gxf_write_padding(AVIOContext *pb, int64_t to_pad)
{
for (; to_pad > 0; to_pad--) {
- put_byte(pb, 0);
+ avio_w8(pb, 0);
}
}
-static offset_t updatePacketSize(ByteIOContext *pb, offset_t pos)
+static int64_t updatePacketSize(AVIOContext *pb, int64_t pos)
{
- offset_t curpos;
+ int64_t curpos;
int size;
- size = url_ftell(pb) - pos;
+ size = avio_tell(pb) - pos;
if (size % 4) {
gxf_write_padding(pb, 4 - size % 4);
- size = url_ftell(pb) - pos;
+ size = avio_tell(pb) - pos;
}
- curpos = url_ftell(pb);
- url_fseek(pb, pos + 6, SEEK_SET);
- put_be32(pb, size);
- url_fseek(pb, curpos, SEEK_SET);
+ curpos = avio_tell(pb);
+ avio_seek(pb, pos + 6, SEEK_SET);
+ avio_wb32(pb, size);
+ avio_seek(pb, curpos, SEEK_SET);
return curpos - pos;
}
-static offset_t updateSize(ByteIOContext *pb, offset_t pos)
+static int64_t updateSize(AVIOContext *pb, int64_t pos)
{
- offset_t curpos;
+ int64_t curpos;
- curpos = url_ftell(pb);
- url_fseek(pb, pos, SEEK_SET);
- put_be16(pb, curpos - pos - 2);
- url_fseek(pb, curpos, SEEK_SET);
+ curpos = avio_tell(pb);
+ avio_seek(pb, pos, SEEK_SET);
+ avio_wb16(pb, curpos - pos - 2);
+ avio_seek(pb, curpos, SEEK_SET);
return curpos - pos;
}
-static void gxf_write_packet_header(ByteIOContext *pb, pkt_type_t type)
+static void gxf_write_packet_header(AVIOContext *pb, GXFPktType type)
{
- put_be32(pb, 0); /* packet leader for synchro */
- put_byte(pb, 1);
- put_byte(pb, type); /* map packet */
- put_be32(pb, 0); /* size */
- put_be32(pb, 0); /* reserved */
- put_byte(pb, 0xE1); /* trailer 1 */
- put_byte(pb, 0xE2); /* trailer 2 */
+ avio_wb32(pb, 0); /* packet leader for synchro */
+ avio_w8(pb, 1);
+ avio_w8(pb, type); /* map packet */
+ avio_wb32(pb, 0); /* size */
+ avio_wb32(pb, 0); /* reserved */
+ avio_w8(pb, 0xE1); /* trailer 1 */
+ avio_w8(pb, 0xE2); /* trailer 2 */
}
-static int gxf_write_mpeg_auxiliary(ByteIOContext *pb, GXFStreamContext *ctx)
+static int gxf_write_mpeg_auxiliary(AVIOContext *pb, AVStream *st)
{
+ GXFStreamContext *sc = st->priv_data;
char buffer[1024];
- int size;
-
- if (ctx->iframes) {
- ctx->p_per_gop = ctx->pframes / ctx->iframes;
- if (ctx->pframes % ctx->iframes)
- ctx->p_per_gop++;
- if (ctx->pframes)
- ctx->b_per_gop = ctx->bframes / ctx->pframes;
- if (ctx->p_per_gop > 9)
- ctx->p_per_gop = 9; /* ensure value won't take more than one char */
- if (ctx->b_per_gop > 9)
- ctx->b_per_gop = 9; /* ensure value won't take more than one char */
+ int size, starting_line;
+
+ if (sc->iframes) {
+ sc->p_per_gop = sc->pframes / sc->iframes;
+ if (sc->pframes % sc->iframes)
+ sc->p_per_gop++;
+ if (sc->pframes) {
+ sc->b_per_i_or_p = sc->bframes / sc->pframes;
+ if (sc->bframes % sc->pframes)
+ sc->b_per_i_or_p++;
+ }
+ if (sc->p_per_gop > 9)
+ sc->p_per_gop = 9; /* ensure value won't take more than one char */
+ if (sc->b_per_i_or_p > 9)
+ sc->b_per_i_or_p = 9; /* ensure value won't take more than one char */
}
+ if (st->codecpar->height == 512 || st->codecpar->height == 608)
+ starting_line = 7; // VBI
+ else if (st->codecpar->height == 480)
+ starting_line = 20;
+ else
+ starting_line = 23; // default PAL
+
size = snprintf(buffer, 1024, "Ver 1\nBr %.6f\nIpg 1\nPpi %d\nBpiop %d\n"
- "Pix 0\nCf %d\nCg %d\nSl 7\nnl16 %d\nVi 1\nf1 1\n",
- (float)ctx->codec->bit_rate, ctx->p_per_gop, ctx->b_per_gop,
- ctx->codec->pix_fmt == PIX_FMT_YUV422P ? 2 : 1, ctx->first_gop_closed == 1,
- ctx->codec->height / 16);
- put_byte(pb, 0x4F);
- put_byte(pb, size + 1);
- put_buffer(pb, (uint8_t *)buffer, size + 1);
+ "Pix 0\nCf %d\nCg %d\nSl %d\nnl16 %d\nVi 1\nf1 1\n",
+ (float)st->codecpar->bit_rate, sc->p_per_gop, sc->b_per_i_or_p,
+ st->codecpar->format == AV_PIX_FMT_YUV422P ? 2 : 1, sc->first_gop_closed == 1,
+ starting_line, (st->codecpar->height + 15) / 16);
+ avio_w8(pb, TRACK_MPG_AUX);
+ avio_w8(pb, size + 1);
+ avio_write(pb, (uint8_t *)buffer, size + 1);
return size + 3;
}
-static int gxf_write_timecode_auxiliary(ByteIOContext *pb, GXFStreamContext *ctx)
+static int gxf_write_timecode_auxiliary(AVIOContext *pb, GXFStreamContext *sc)
{
- /* FIXME implement that */
- put_byte(pb, 0); /* fields */
- put_byte(pb, 0); /* seconds */
- put_byte(pb, 0); /* minutes */
- put_byte(pb, 0); /* flags + hours */
+ avio_w8(pb, 0); /* fields */
+ avio_w8(pb, 0); /* seconds */
+ avio_w8(pb, 0); /* minutes */
+ avio_w8(pb, 0); /* flags + hours */
/* reserved */
- put_be32(pb, 0);
+ avio_wb32(pb, 0);
return 8;
}
-static int gxf_write_track_description(ByteIOContext *pb, GXFStreamContext *stream)
+static int gxf_write_track_description(AVFormatContext *s, GXFStreamContext *sc, int index)
{
- offset_t pos;
+ AVIOContext *pb = s->pb;
+ int64_t pos;
+ int mpeg = sc->track_type == 4 || sc->track_type == 9;
/* track description section */
- put_byte(pb, stream->media_type + 0x80);
- put_byte(pb, stream->index + 0xC0);
+ avio_w8(pb, sc->media_type + 0x80);
+ avio_w8(pb, index + 0xC0);
- pos = url_ftell(pb);
- put_be16(pb, 0); /* size */
+ pos = avio_tell(pb);
+ avio_wb16(pb, 0); /* size */
/* media file name */
- put_byte(pb, 0x4C);
- put_byte(pb, strlen(ES_NAME_PATTERN) + 3);
- put_tag(pb, ES_NAME_PATTERN);
- put_be16(pb, stream->media_info);
- put_byte(pb, 0);
+ avio_w8(pb, TRACK_NAME);
+ avio_w8(pb, strlen(ES_NAME_PATTERN) + 3);
+ avio_write(pb, ES_NAME_PATTERN, sizeof(ES_NAME_PATTERN) - 1);
+ avio_wb16(pb, sc->media_info);
+ avio_w8(pb, 0);
- if (stream->codec->codec_id != CODEC_ID_MPEG2VIDEO) {
+ if (!mpeg) {
/* auxiliary information */
- put_byte(pb, 0x4D);
- put_byte(pb, 8);
- if (stream->codec->codec_id == CODEC_ID_NONE)
- gxf_write_timecode_auxiliary(pb, stream);
+ avio_w8(pb, TRACK_AUX);
+ avio_w8(pb, 8);
+ if (sc->track_type == 3)
+ gxf_write_timecode_auxiliary(pb, sc);
else
- put_le64(pb, 0);
+ avio_wl64(pb, 0);
}
/* file system version */
- put_byte(pb, 0x4E);
- put_byte(pb, 4);
- put_be32(pb, 0);
+ avio_w8(pb, TRACK_VER);
+ avio_w8(pb, 4);
+ avio_wb32(pb, 0);
- if (stream->codec->codec_id == CODEC_ID_MPEG2VIDEO)
- gxf_write_mpeg_auxiliary(pb, stream);
+ if (mpeg)
+ gxf_write_mpeg_auxiliary(pb, s->streams[index]);
/* frame rate */
- put_byte(pb, 0x50);
- put_byte(pb, 4);
- put_be32(pb, stream->frame_rate_index);
+ avio_w8(pb, TRACK_FPS);
+ avio_w8(pb, 4);
+ avio_wb32(pb, sc->frame_rate_index);
/* lines per frame */
- put_byte(pb, 0x51);
- put_byte(pb, 4);
- put_be32(pb, stream->lines_index);
+ avio_w8(pb, TRACK_LINES);
+ avio_w8(pb, 4);
+ avio_wb32(pb, sc->lines_index);
/* fields per frame */
- put_byte(pb, 0x52);
- put_byte(pb, 4);
- put_be32(pb, stream->fields);
+ avio_w8(pb, TRACK_FPF);
+ avio_w8(pb, 4);
+ avio_wb32(pb, sc->fields);
return updateSize(pb, pos);
}
-static int gxf_write_material_data_section(ByteIOContext *pb, GXFContext *ctx)
+static int gxf_write_material_data_section(AVFormatContext *s)
{
- offset_t pos;
- const char *filename = strrchr(ctx->fc->filename, '/');
+ GXFContext *gxf = s->priv_data;
+ AVIOContext *pb = s->pb;
+ int64_t pos;
+ int len;
+ const char *filename = strrchr(s->filename, '/');
- pos = url_ftell(pb);
- put_be16(pb, 0); /* size */
+ pos = avio_tell(pb);
+ avio_wb16(pb, 0); /* size */
/* name */
if (filename)
filename++;
else
- filename = ctx->fc->filename;
- put_byte(pb, 0x40);
- put_byte(pb, strlen(SERVER_PATH) + strlen(filename) + 1);
- put_tag(pb, SERVER_PATH);
- put_tag(pb, filename);
- put_byte(pb, 0);
+ filename = s->filename;
+ len = strlen(filename);
+
+ avio_w8(pb, MAT_NAME);
+ avio_w8(pb, strlen(SERVER_PATH) + len + 1);
+ avio_write(pb, SERVER_PATH, sizeof(SERVER_PATH) - 1);
+ avio_write(pb, filename, len);
+ avio_w8(pb, 0);
/* first field */
- put_byte(pb, 0x41);
- put_byte(pb, 4);
- put_be32(pb, 0);
+ avio_w8(pb, MAT_FIRST_FIELD);
+ avio_w8(pb, 4);
+ avio_wb32(pb, 0);
/* last field */
- put_byte(pb, 0x42);
- put_byte(pb, 4);
- put_be32(pb, ctx->nb_frames);
+ avio_w8(pb, MAT_LAST_FIELD);
+ avio_w8(pb, 4);
+ avio_wb32(pb, gxf->nb_fields);
/* reserved */
- put_byte(pb, 0x43);
- put_byte(pb, 4);
- put_be32(pb, 0);
+ avio_w8(pb, MAT_MARK_IN);
+ avio_w8(pb, 4);
+ avio_wb32(pb, 0);
- put_byte(pb, 0x44);
- put_byte(pb, 4);
- put_be32(pb, ctx->nb_frames);
+ avio_w8(pb, MAT_MARK_OUT);
+ avio_w8(pb, 4);
+ avio_wb32(pb, gxf->nb_fields);
/* estimated size */
- put_byte(pb, 0x45);
- put_byte(pb, 4);
- put_be32(pb, url_fsize(pb) / 1024);
+ avio_w8(pb, MAT_SIZE);
+ avio_w8(pb, 4);
+ avio_wb32(pb, avio_size(pb) / 1024);
return updateSize(pb, pos);
}
-static int gxf_write_track_description_section(ByteIOContext *pb, GXFContext *ctx)
+static int gxf_write_track_description_section(AVFormatContext *s)
{
- offset_t pos;
+ GXFContext *gxf = s->priv_data;
+ AVIOContext *pb = s->pb;
+ int64_t pos;
int i;
- pos = url_ftell(pb);
- put_be16(pb, 0); /* size */
- for (i = 0; i < ctx->fc->nb_streams; ++i)
- gxf_write_track_description(pb, &ctx->streams[i]);
+ pos = avio_tell(pb);
+ avio_wb16(pb, 0); /* size */
+ for (i = 0; i < s->nb_streams; ++i)
+ gxf_write_track_description(s, s->streams[i]->priv_data, i);
+
+ gxf_write_track_description(s, &gxf->timecode_track, s->nb_streams);
+
return updateSize(pb, pos);
}
-static int gxf_write_map_packet(ByteIOContext *pb, GXFContext *ctx)
+static int gxf_write_map_packet(AVFormatContext *s, int rewrite)
{
- offset_t pos = url_ftell(pb);
+ GXFContext *gxf = s->priv_data;
+ AVIOContext *pb = s->pb;
+ int64_t pos = avio_tell(pb);
+
+ if (!rewrite) {
+ if (!(gxf->map_offsets_nb % 30)) {
+ int err;
+ if ((err = av_reallocp_array(&gxf->map_offsets,
+ gxf->map_offsets_nb + 30,
+ sizeof(*gxf->map_offsets))) < 0) {
+ gxf->map_offsets_nb = 0;
+ av_log(s, AV_LOG_ERROR, "could not realloc map offsets\n");
+ return err;
+ }
+ }
+ gxf->map_offsets[gxf->map_offsets_nb++] = pos; // do not increment here
+ }
gxf_write_packet_header(pb, PKT_MAP);
/* preamble */
- put_byte(pb, 0xE0); /* version */
- put_byte(pb, 0xFF); /* reserved */
+ avio_w8(pb, 0xE0); /* version */
+ avio_w8(pb, 0xFF); /* reserved */
- gxf_write_material_data_section(pb, ctx);
- gxf_write_track_description_section(pb, ctx);
+ gxf_write_material_data_section(s);
+ gxf_write_track_description_section(s);
return updatePacketSize(pb, pos);
}
-#if 0
-static int gxf_write_flt_packet(ByteIOContext *pb, GXFContext *ctx)
+static int gxf_write_flt_packet(AVFormatContext *s)
{
- offset_t pos = url_ftell(pb);
- int i;
+ GXFContext *gxf = s->priv_data;
+ AVIOContext *pb = s->pb;
+ int64_t pos = avio_tell(pb);
+ int fields_per_flt = (gxf->nb_fields+1) / 1000 + 1;
+ int flt_entries = gxf->nb_fields / fields_per_flt;
+ int i = 0;
gxf_write_packet_header(pb, PKT_FLT);
- put_le32(pb, 1000); /* number of fields */
- put_le32(pb, 0); /* number of active flt entries */
+ avio_wl32(pb, fields_per_flt); /* number of fields */
+ avio_wl32(pb, flt_entries); /* number of active flt entries */
- for (i = 0; i < 1000; ++i) {
- put_le32(pb, 0);
+ if (gxf->flt_entries) {
+ for (i = 0; i < flt_entries; i++)
+ avio_wl32(pb, gxf->flt_entries[(i*fields_per_flt)>>1]);
}
+
+ for (; i < 1000; i++)
+ avio_wl32(pb, 0);
+
return updatePacketSize(pb, pos);
}
-#endif
-static int gxf_write_umf_material_description(ByteIOContext *pb, GXFContext *ctx)
+static int gxf_write_umf_material_description(AVFormatContext *s)
{
- put_le32(pb, ctx->flags);
- put_le32(pb, ctx->nb_frames); /* length of the longest track */
- put_le32(pb, ctx->nb_frames); /* length of the shortest track */
- put_le32(pb, 0); /* mark in */
- put_le32(pb, ctx->nb_frames); /* mark out */
- put_le32(pb, 0); /* timecode mark in */
- put_le32(pb, ctx->nb_frames); /* timecode mark out */
- put_le64(pb, ctx->fc->timestamp); /* modification time */
- put_le64(pb, ctx->fc->timestamp); /* creation time */
- put_le16(pb, 0); /* reserved */
- put_le16(pb, 0); /* reserved */
- put_le16(pb, ctx->audio_tracks);
- put_le16(pb, 0); /* timecode track count */
- put_le16(pb, 0); /* reserved */
- put_le16(pb, ctx->mpeg_tracks);
+ GXFContext *gxf = s->priv_data;
+ AVIOContext *pb = s->pb;
+ int timecode_base = gxf->time_base.den == 60000 ? 60 : 50;
+ int64_t timestamp = 0;
+ AVDictionaryEntry *t;
+ uint32_t timecode;
+
+ if (t = av_dict_get(s->metadata, "creation_time", NULL, 0))
+ timestamp = ff_iso8601_to_unix_time(t->value);
+
+ // XXX drop frame
+ timecode =
+ gxf->nb_fields / (timecode_base * 3600) % 24 << 24 | // hours
+ gxf->nb_fields / (timecode_base * 60) % 60 << 16 | // minutes
+ gxf->nb_fields / timecode_base % 60 << 8 | // seconds
+ gxf->nb_fields % timecode_base; // fields
+
+ avio_wl32(pb, gxf->flags);
+ avio_wl32(pb, gxf->nb_fields); /* length of the longest track */
+ avio_wl32(pb, gxf->nb_fields); /* length of the shortest track */
+ avio_wl32(pb, 0); /* mark in */
+ avio_wl32(pb, gxf->nb_fields); /* mark out */
+ avio_wl32(pb, 0); /* timecode mark in */
+ avio_wl32(pb, timecode); /* timecode mark out */
+ avio_wl64(pb, timestamp); /* modification time */
+ avio_wl64(pb, timestamp); /* creation time */
+ avio_wl16(pb, 0); /* reserved */
+ avio_wl16(pb, 0); /* reserved */
+ avio_wl16(pb, gxf->audio_tracks);
+ avio_wl16(pb, 1); /* timecode track count */
+ avio_wl16(pb, 0); /* reserved */
+ avio_wl16(pb, gxf->mpeg_tracks);
return 48;
}
-static int gxf_write_umf_payload(ByteIOContext *pb, GXFContext *ctx)
+static int gxf_write_umf_payload(AVFormatContext *s)
{
- put_le32(pb, ctx->umf_length); /* total length of the umf data */
- put_le32(pb, 3); /* version */
- put_le32(pb, ctx->fc->nb_streams);
- put_le32(pb, ctx->umf_track_offset); /* umf track section offset */
- put_le32(pb, ctx->umf_track_size);
- put_le32(pb, ctx->fc->nb_streams);
- put_le32(pb, ctx->umf_media_offset);
- put_le32(pb, ctx->umf_media_size);
- put_le32(pb, ctx->umf_user_data_offset); /* user data offset */
- put_le32(pb, ctx->umf_user_data_size); /* user data size */
- put_le32(pb, 0); /* reserved */
- put_le32(pb, 0); /* reserved */
+ GXFContext *gxf = s->priv_data;
+ AVIOContext *pb = s->pb;
+
+ avio_wl32(pb, gxf->umf_length); /* total length of the umf data */
+ avio_wl32(pb, 3); /* version */
+ avio_wl32(pb, s->nb_streams+1);
+ avio_wl32(pb, gxf->umf_track_offset); /* umf track section offset */
+ avio_wl32(pb, gxf->umf_track_size);
+ avio_wl32(pb, s->nb_streams+1);
+ avio_wl32(pb, gxf->umf_media_offset);
+ avio_wl32(pb, gxf->umf_media_size);
+ avio_wl32(pb, gxf->umf_length); /* user data offset */
+ avio_wl32(pb, 0); /* user data size */
+ avio_wl32(pb, 0); /* reserved */
+ avio_wl32(pb, 0); /* reserved */
return 48;
}
-static int gxf_write_umf_track_description(ByteIOContext *pb, GXFContext *ctx)
+static int gxf_write_umf_track_description(AVFormatContext *s)
{
- offset_t pos = url_ftell(pb);
- int tracks[255]={0};
+ AVIOContext *pb = s->pb;
+ GXFContext *gxf = s->priv_data;
+ int64_t pos = avio_tell(pb);
int i;
- ctx->umf_track_offset = pos - ctx->umf_start_offset;
- for (i = 0; i < ctx->fc->nb_streams; ++i) {
- AVStream *st = ctx->fc->streams[i];
- GXFStreamContext *sc = &ctx->streams[i];
- int id = 0;
-
- switch (st->codec->codec_id) {
- case CODEC_ID_MPEG1VIDEO: id= 'L'; break;
- case CODEC_ID_MPEG2VIDEO: id= 'M'; break;
- case CODEC_ID_PCM_S16LE: id= 'A'; break;
- case CODEC_ID_DVVIDEO: id= sc->track_type == 6 ? 'E' : 'D'; break;
- case CODEC_ID_MJPEG: id= 'V'; break;
- default: break;
- }
- sc->media_info= id << 8;
- /* FIXME first 10 audio tracks are 0 to 9 next 22 are A to V */
- sc->media_info |= '0' + (tracks[id]++);
- put_le16(pb, sc->media_info);
- put_le16(pb, 1);
+ gxf->umf_track_offset = pos - gxf->umf_start_offset;
+ for (i = 0; i < s->nb_streams; ++i) {
+ GXFStreamContext *sc = s->streams[i]->priv_data;
+ avio_wl16(pb, sc->media_info);
+ avio_wl16(pb, 1);
}
- return url_ftell(pb) - pos;
+
+ avio_wl16(pb, gxf->timecode_track.media_info);
+ avio_wl16(pb, 1);
+
+ return avio_tell(pb) - pos;
}
-static int gxf_write_umf_media_mpeg(ByteIOContext *pb, GXFStreamContext *stream)
+static int gxf_write_umf_media_mpeg(AVIOContext *pb, AVStream *st)
{
- if (stream->codec->pix_fmt == PIX_FMT_YUV422P)
- put_le32(pb, 2);
+ GXFStreamContext *sc = st->priv_data;
+
+ if (st->codecpar->format == AV_PIX_FMT_YUV422P)
+ avio_wl32(pb, 2);
else
- put_le32(pb, 1); /* default to 420 */
- put_le32(pb, stream->first_gop_closed == 1); /* closed = 1, open = 0, unknown = 255 */
- put_le32(pb, 3); /* top = 1, bottom = 2, frame = 3, unknown = 0 */
- put_le32(pb, 1); /* I picture per GOP */
- put_le32(pb, stream->p_per_gop);
- put_le32(pb, stream->b_per_gop);
- if (stream->codec->codec_id == CODEC_ID_MPEG2VIDEO)
- put_le32(pb, 2);
- else if (stream->codec->codec_id == CODEC_ID_MPEG1VIDEO)
- put_le32(pb, 1);
+ avio_wl32(pb, 1); /* default to 420 */
+ avio_wl32(pb, sc->first_gop_closed == 1); /* closed = 1, open = 0, unknown = 255 */
+ avio_wl32(pb, 3); /* top = 1, bottom = 2, frame = 3, unknown = 0 */
+ avio_wl32(pb, 1); /* I picture per GOP */
+ avio_wl32(pb, sc->p_per_gop);
+ avio_wl32(pb, sc->b_per_i_or_p);
+ if (st->codecpar->codec_id == AV_CODEC_ID_MPEG2VIDEO)
+ avio_wl32(pb, 2);
+ else if (st->codecpar->codec_id == AV_CODEC_ID_MPEG1VIDEO)
+ avio_wl32(pb, 1);
else
- put_le32(pb, 0);
- put_le32(pb, 0); /* reserved */
+ avio_wl32(pb, 0);
+ avio_wl32(pb, 0); /* reserved */
return 32;
}
-static int gxf_write_umf_media_timecode(ByteIOContext *pb, GXFStreamContext *track)
+static int gxf_write_umf_media_timecode(AVIOContext *pb, GXFStreamContext *sc)
{
- /* FIXME implement */
- put_be32(pb, 0); /* drop frame flag */
- put_be32(pb, 0); /* reserved */
- put_be32(pb, 0); /* reserved */
- put_be32(pb, 0); /* reserved */
- put_be32(pb, 0); /* reserved */
- put_be32(pb, 0); /* reserved */
- put_be32(pb, 0); /* reserved */
- put_be32(pb, 0); /* reserved */
+ avio_wl32(pb, 1); /* non drop frame */
+ avio_wl32(pb, 0); /* reserved */
+ avio_wl32(pb, 0); /* reserved */
+ avio_wl32(pb, 0); /* reserved */
+ avio_wl32(pb, 0); /* reserved */
+ avio_wl32(pb, 0); /* reserved */
+ avio_wl32(pb, 0); /* reserved */
+ avio_wl32(pb, 0); /* reserved */
return 32;
}
-static int gxf_write_umf_media_dv(ByteIOContext *pb, GXFStreamContext *track)
+static int gxf_write_umf_media_dv(AVIOContext *pb, GXFStreamContext *sc)
{
int i;
for (i = 0; i < 8; i++) {
- put_be32(pb, 0);
+ avio_wb32(pb, 0);
}
return 32;
}
-static int gxf_write_umf_media_audio(ByteIOContext *pb, GXFStreamContext *track)
-{
- put_le64(pb, av_dbl2int(1)); /* sound level to begin to */
- put_le64(pb, av_dbl2int(1)); /* sound level to begin to */
- put_le32(pb, 0); /* number of fields over which to ramp up sound level */
- put_le32(pb, 0); /* number of fields over which to ramp down sound level */
- put_le32(pb, 0); /* reserved */
- put_le32(pb, 0); /* reserved */
- return 32;
-}
-
-#if 0
-static int gxf_write_umf_media_mjpeg(ByteIOContext *pb, GXFStreamContext *track)
+static int gxf_write_umf_media_audio(AVIOContext *pb, GXFStreamContext *sc)
{
- put_be64(pb, 0); /* FIXME FLOAT max chroma quant level */
- put_be64(pb, 0); /* FIXME FLOAT max luma quant level */
- put_be64(pb, 0); /* FIXME FLOAT min chroma quant level */
- put_be64(pb, 0); /* FIXME FLOAT min luma quant level */
+ avio_wl64(pb, av_double2int(1)); /* sound level to begin to */
+ avio_wl64(pb, av_double2int(1)); /* sound level to begin to */
+ avio_wl32(pb, 0); /* number of fields over which to ramp up sound level */
+ avio_wl32(pb, 0); /* number of fields over which to ramp down sound level */
+ avio_wl32(pb, 0); /* reserved */
+ avio_wl32(pb, 0); /* reserved */
return 32;
}
-#endif
-static int gxf_write_umf_media_description(ByteIOContext *pb, GXFContext *ctx)
+static int gxf_write_umf_media_description(AVFormatContext *s)
{
- offset_t pos;
- int i;
-
- 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);
-
- memset(buffer, 0, 88);
- 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:
+ GXFContext *gxf = s->priv_data;
+ AVIOContext *pb = s->pb;
+ int64_t pos;
+ int i, j;
+
+ pos = avio_tell(pb);
+ gxf->umf_media_offset = pos - gxf->umf_start_offset;
+ for (i = 0; i <= s->nb_streams; ++i) {
+ GXFStreamContext *sc;
+ int64_t startpos, curpos;
+
+ if (i == s->nb_streams)
+ sc = &gxf->timecode_track;
+ else
+ sc = s->streams[i]->priv_data;
+
+ startpos = avio_tell(pb);
+ avio_wl16(pb, 0); /* length */
+ avio_wl16(pb, sc->media_info);
+ avio_wl16(pb, 0); /* reserved */
+ avio_wl16(pb, 0); /* reserved */
+ avio_wl32(pb, gxf->nb_fields);
+ avio_wl32(pb, 0); /* attributes rw, ro */
+ avio_wl32(pb, 0); /* mark in */
+ avio_wl32(pb, gxf->nb_fields); /* mark out */
+ avio_write(pb, ES_NAME_PATTERN, strlen(ES_NAME_PATTERN));
+ avio_wb16(pb, sc->media_info);
+ for (j = strlen(ES_NAME_PATTERN)+2; j < 88; j++)
+ avio_w8(pb, 0);
+ avio_wl32(pb, sc->track_type);
+ avio_wl32(pb, sc->sample_rate);
+ avio_wl32(pb, sc->sample_size);
+ avio_wl32(pb, 0); /* reserved */
+
+ if (sc == &gxf->timecode_track)
gxf_write_umf_media_timecode(pb, sc); /* 8 0bytes */
+ else {
+ AVStream *st = s->streams[i];
+ switch (st->codecpar->codec_id) {
+ case AV_CODEC_ID_MPEG1VIDEO:
+ case AV_CODEC_ID_MPEG2VIDEO:
+ gxf_write_umf_media_mpeg(pb, st);
+ break;
+ case AV_CODEC_ID_PCM_S16LE:
+ gxf_write_umf_media_audio(pb, sc);
+ break;
+ case AV_CODEC_ID_DVVIDEO:
+ gxf_write_umf_media_dv(pb, sc);
+ break;
+ }
}
- 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;
+ curpos = avio_tell(pb);
+ avio_seek(pb, startpos, SEEK_SET);
+ avio_wl16(pb, curpos - startpos);
+ avio_seek(pb, curpos, SEEK_SET);
+ }
+ return avio_tell(pb) - pos;
}
-static int gxf_write_umf_packet(ByteIOContext *pb, GXFContext *ctx)
+static int gxf_write_umf_packet(AVFormatContext *s)
{
- offset_t pos = url_ftell(pb);
+ GXFContext *gxf = s->priv_data;
+ AVIOContext *pb = s->pb;
+ int64_t pos = avio_tell(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;
+ avio_w8(pb, 3); /* first and last (only) packet */
+ avio_wb32(pb, gxf->umf_length); /* data length */
+
+ gxf->umf_start_offset = avio_tell(pb);
+ gxf_write_umf_payload(s);
+ gxf_write_umf_material_description(s);
+ gxf->umf_track_size = gxf_write_umf_track_description(s);
+ gxf->umf_media_size = gxf_write_umf_media_description(s);
+ gxf->umf_length = avio_tell(pb) - gxf->umf_start_offset;
return updatePacketSize(pb, pos);
}
+static const int GXF_samples_per_frame[] = { 32768, 0 };
+
+static void gxf_init_timecode_track(GXFStreamContext *sc, GXFStreamContext *vsc)
+{
+ if (!vsc)
+ return;
+
+ sc->media_type = vsc->sample_rate == 60 ? 7 : 8;
+ sc->sample_rate = vsc->sample_rate;
+ sc->media_info = ('T'<<8) | '0';
+ sc->track_type = 3;
+ sc->frame_rate_index = vsc->frame_rate_index;
+ sc->lines_index = vsc->lines_index;
+ sc->sample_size = 16;
+ sc->fields = vsc->fields;
+}
+
static int gxf_write_header(AVFormatContext *s)
{
- ByteIOContext *pb = &s->pb;
+ AVIOContext *pb = s->pb;
GXFContext *gxf = s->priv_data;
- int i;
+ GXFStreamContext *vsc = NULL;
+ uint8_t tracks[255] = {0};
+ int i, media_info = 0;
+
+ if (!pb->seekable) {
+ av_log(s, AV_LOG_ERROR, "gxf muxer does not support streamed output, patch welcome");
+ return -1;
+ }
- 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) {
+ GXFStreamContext *sc = av_mallocz(sizeof(*sc));
+ if (!sc)
+ return AVERROR(ENOMEM);
+ st->priv_data = sc;
+
+ sc->media_type = ff_codec_get_tag(gxf_media_types, st->codecpar->codec_id);
+ if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
+ if (st->codecpar->codec_id != AV_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) {
+ if (st->codecpar->sample_rate != 48000) {
av_log(s, AV_LOG_ERROR, "only 48000hz sampling rate is allowed\n");
return -1;
}
- if (st->codec->channels != 1) {
+ if (st->codecpar->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;
- av_set_pts_info(st, 64, 1, sc->sample_rate);
+ sc->sample_rate = st->codecpar->sample_rate;
+ avpriv_set_pts_info(st, 64, 1, sc->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 */
- av_fifo_init(&sc->audio_buffer, 3*GXF_AUDIO_PACKET_SIZE);
- } else if (sc->codec->codec_type == CODEC_TYPE_VIDEO) {
+ media_info = 'A';
+ } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
+ if (i != 0) {
+ av_log(s, AV_LOG_ERROR, "video stream must be the first track\n");
+ return -1;
+ }
/* FIXME check from time_base ? */
- if (sc->codec->height == 480 || sc->codec->height == 512) { /* NTSC or NTSC+VBI */
+ if (st->codecpar->height == 480 || st->codecpar->height == 512) { /* NTSC or NTSC+VBI */
sc->frame_rate_index = 5;
sc->sample_rate = 60;
gxf->flags |= 0x00000080;
- } else { /* assume PAL */
+ gxf->time_base = (AVRational){ 1001, 60000 };
+ } else if (st->codecpar->height == 576 || st->codecpar->height == 608) { /* PAL or PAL+VBI */
sc->frame_rate_index = 6;
sc->media_type++;
sc->sample_rate = 50;
gxf->flags |= 0x00000040;
+ gxf->time_base = (AVRational){ 1, 50 };
+ } else {
+ av_log(s, AV_LOG_ERROR, "unsupported video resolution, "
+ "gxf muxer only accepts PAL or NTSC resolutions currently\n");
+ return -1;
}
- gxf->sample_rate = sc->sample_rate;
- av_set_pts_info(st, 64, 1, sc->sample_rate);
- if (gxf_find_lines_index(sc) < 0)
+ avpriv_set_pts_info(st, 64, gxf->time_base.num, gxf->time_base.den);
+ if (gxf_find_lines_index(st) < 0)
sc->lines_index = -1;
- sc->sample_size = st->codec->bit_rate;
+ sc->sample_size = st->codecpar->bit_rate;
sc->fields = 2; /* interlaced */
- switch (sc->codec->codec_id) {
- case CODEC_ID_MPEG2VIDEO:
+
+ vsc = sc;
+
+ switch (st->codecpar->codec_id) {
+ case AV_CODEC_ID_MJPEG:
+ sc->track_type = 1;
+ gxf->flags |= 0x00004000;
+ media_info = 'J';
+ break;
+ case AV_CODEC_ID_MPEG1VIDEO:
+ sc->track_type = 9;
+ gxf->mpeg_tracks++;
+ media_info = 'L';
+ break;
+ case AV_CODEC_ID_MPEG2VIDEO:
sc->first_gop_closed = -1;
sc->track_type = 4;
gxf->mpeg_tracks++;
gxf->flags |= 0x00008000;
+ media_info = 'M';
break;
- case CODEC_ID_DVVIDEO:
- if (sc->codec->pix_fmt == PIX_FMT_YUV422P) {
+ case AV_CODEC_ID_DVVIDEO:
+ if (st->codecpar->format == AV_PIX_FMT_YUV422P) {
sc->media_type += 2;
sc->track_type = 6;
gxf->flags |= 0x00002000;
+ media_info = 'E';
} else {
sc->track_type = 5;
gxf->flags |= 0x00001000;
+ media_info = 'D';
}
break;
default:
- av_log(NULL, AV_LOG_ERROR, "video codec not supported\n");
+ av_log(s, AV_LOG_ERROR, "video codec not supported\n");
return -1;
}
}
+ /* FIXME first 10 audio tracks are 0 to 9 next 22 are A to V */
+ sc->media_info = media_info<<8 | ('0'+tracks[media_info]++);
+ sc->order = s->nb_streams - st->index;
}
- gxf_write_map_packet(pb, gxf);
- //gxf_write_flt_packet(pb, gxf);
- gxf_write_umf_packet(pb, gxf);
- put_flush_packet(pb);
+
+ if (ff_audio_interleave_init(s, GXF_samples_per_frame, (AVRational){ 1, 48000 }) < 0)
+ return -1;
+
+ gxf_init_timecode_track(&gxf->timecode_track, vsc);
+ gxf->flags |= 0x200000; // time code track is non-drop frame
+
+ gxf_write_map_packet(s, 0);
+ gxf_write_flt_packet(s);
+ gxf_write_umf_packet(s);
+
+ gxf->packet_count = 3;
+
+ avio_flush(pb);
return 0;
}
-static int gxf_write_eos_packet(ByteIOContext *pb, GXFContext *ctx)
+static int gxf_write_eos_packet(AVIOContext *pb)
{
- offset_t pos = url_ftell(pb);
+ int64_t pos = avio_tell(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;
+ AVIOContext *pb = s->pb;
+ int64_t end;
int i;
- for (i = 0; i < s->nb_streams; ++i) {
- if (s->streams[i]->codec->codec_type == CODEC_TYPE_AUDIO) {
- av_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;
+ ff_audio_interleave_close(s);
+
+ gxf_write_eos_packet(pb);
+ end = avio_tell(pb);
+ avio_seek(pb, 0, SEEK_SET);
+ /* overwrite map, flt and umf packets with new values */
+ gxf_write_map_packet(s, 1);
+ gxf_write_flt_packet(s);
+ gxf_write_umf_packet(s);
+ avio_flush(pb);
+ /* update duration in all map packets */
+ for (i = 1; i < gxf->map_offsets_nb; i++) {
+ avio_seek(pb, gxf->map_offsets[i], SEEK_SET);
+ gxf_write_map_packet(s, 1);
+ avio_flush(pb);
}
- 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);
+ avio_seek(pb, end, SEEK_SET);
+
+ av_freep(&gxf->flt_entries);
+ av_freep(&gxf->map_offsets);
+
return 0;
}
return (buf[i+1]>>3)&7;
}
-static int gxf_write_media_preamble(ByteIOContext *pb, GXFContext *ctx, AVPacket *pkt, int size)
+static int gxf_write_media_preamble(AVFormatContext *s, AVPacket *pkt, int size)
{
- GXFStreamContext *sc = &ctx->streams[pkt->stream_index];
- int64_t dts = av_rescale(pkt->dts, ctx->sample_rate, sc->sample_rate);
-
- put_byte(pb, sc->media_type);
- put_byte(pb, sc->index);
- put_be32(pb, dts);
- 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) {
+ GXFContext *gxf = s->priv_data;
+ AVIOContext *pb = s->pb;
+ AVStream *st = s->streams[pkt->stream_index];
+ GXFStreamContext *sc = st->priv_data;
+ unsigned field_nb;
+ /* If the video is frame-encoded, the frame numbers shall be represented by
+ * even field numbers.
+ * see SMPTE360M-2004 6.4.2.1.3 Media field number */
+ if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
+ field_nb = gxf->nb_fields;
+ } else {
+ field_nb = av_rescale_rnd(pkt->dts, gxf->time_base.den,
+ (int64_t)48000*gxf->time_base.num, AV_ROUND_UP);
+ }
+
+ avio_w8(pb, sc->media_type);
+ avio_w8(pb, st->index);
+ avio_wb32(pb, field_nb);
+ if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
+ avio_wb16(pb, 0);
+ avio_wb16(pb, size / 2);
+ } else if (st->codecpar->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
int frame_type = gxf_parse_mpeg_frame(sc, pkt->data, pkt->size);
- if (frame_type == FF_I_TYPE) {
- put_byte(pb, 0x0d);
+ if (frame_type == AV_PICTURE_TYPE_I) {
+ avio_w8(pb, 0x0d);
sc->iframes++;
- } else if (frame_type == FF_B_TYPE) {
- put_byte(pb, 0x0f);
+ } else if (frame_type == AV_PICTURE_TYPE_B) {
+ avio_w8(pb, 0x0f);
sc->bframes++;
} else {
- put_byte(pb, 0x0e);
+ avio_w8(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);
+ avio_wb24(pb, size);
+ } else if (st->codecpar->codec_id == AV_CODEC_ID_DVVIDEO) {
+ avio_w8(pb, size / 4096);
+ avio_wb24(pb, 0);
} else
- put_be32(pb, size);
- put_be32(pb, dts);
- put_byte(pb, 1); /* flags */
- put_byte(pb, 0); /* reserved */
+ avio_wb32(pb, size);
+ avio_wb32(pb, field_nb);
+ avio_w8(pb, 1); /* flags */
+ avio_w8(pb, 0); /* reserved */
return 16;
}
-static int gxf_write_media_packet(ByteIOContext *pb, GXFContext *ctx, AVPacket *pkt)
+static int gxf_write_packet(AVFormatContext *s, AVPacket *pkt)
{
- GXFStreamContext *sc = &ctx->streams[pkt->stream_index];
- offset_t pos = url_ftell(pb);
+ GXFContext *gxf = s->priv_data;
+ AVIOContext *pb = s->pb;
+ AVStream *st = s->streams[pkt->stream_index];
+ int64_t pos = avio_tell(pb);
int padding = 0;
+ int packet_start_offset = avio_tell(pb) / 1024;
gxf_write_packet_header(pb, PKT_MEDIA);
- if (sc->codec->codec_id == CODEC_ID_MPEG2VIDEO && pkt->size % 4) /* MPEG-2 frames must be padded */
+ if (st->codecpar->codec_id == AV_CODEC_ID_MPEG2VIDEO && pkt->size % 4) /* MPEG-2 frames must be padded */
padding = 4 - pkt->size % 4;
- else if (sc->codec->codec_type == CODEC_TYPE_AUDIO)
+ else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
padding = GXF_AUDIO_PACKET_SIZE - pkt->size;
- gxf_write_media_preamble(pb, ctx, pkt, pkt->size + padding);
- put_buffer(pb, pkt->data, pkt->size);
+ gxf_write_media_preamble(s, pkt, pkt->size + padding);
+ avio_write(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;
+ if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
+ if (!(gxf->flt_entries_nb % 500)) {
+ int err;
+ if ((err = av_reallocp_array(&gxf->flt_entries,
+ gxf->flt_entries_nb + 500,
+ sizeof(*gxf->flt_entries))) < 0) {
+ gxf->flt_entries_nb = 0;
+ av_log(s, AV_LOG_ERROR, "could not reallocate flt entries\n");
+ return err;
+ }
+ }
+ gxf->flt_entries[gxf->flt_entries_nb++] = packet_start_offset;
+ gxf->nb_fields += 2; // count fields
+ }
- gxf_write_media_packet(&s->pb, gxf, pkt);
- put_flush_packet(&s->pb);
- return 0;
-}
+ updatePacketSize(pb, pos);
-static int gxf_new_audio_packet(GXFContext *gxf, GXFStreamContext *sc, AVPacket *pkt, int flush)
-{
- int size = flush ? av_fifo_size(&sc->audio_buffer) : GXF_AUDIO_PACKET_SIZE;
-
- if (!size)
- return 0;
- av_new_packet(pkt, size);
- av_fifo_read(&sc->audio_buffer, pkt->data, size);
- pkt->stream_index = sc->index;
- pkt->dts = sc->current_dts;
- sc->current_dts += size / 2; /* we only support 16 bit pcm mono for now */
- return size;
+ gxf->packet_count++;
+ if (gxf->packet_count == 100) {
+ gxf_write_map_packet(s, 0);
+ gxf->packet_count = 0;
+ }
+
+ return 0;
}
-static int gxf_interleave_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
+static int gxf_compare_field_nb(AVFormatContext *s, AVPacket *next, AVPacket *cur)
{
GXFContext *gxf = s->priv_data;
- AVPacket new_pkt;
- int i;
-
- for (i = 0; i < s->nb_streams; i++) {
- if (s->streams[i]->codec->codec_type == CODEC_TYPE_AUDIO) {
- GXFStreamContext *sc = &gxf->streams[i];
- if (pkt && pkt->stream_index == i) {
- av_fifo_write(&sc->audio_buffer, pkt->data, pkt->size);
- pkt = NULL;
- }
- if (flush || av_fifo_size(&sc->audio_buffer) >= GXF_AUDIO_PACKET_SIZE) {
- if (!pkt && gxf_new_audio_packet(gxf, sc, &new_pkt, flush) > 0) {
- pkt = &new_pkt;
- break; /* add pkt right now into list */
- }
- }
- }
+ AVPacket *pkt[2] = { cur, next };
+ int i, field_nb[2];
+ GXFStreamContext *sc[2];
+
+ for (i = 0; i < 2; i++) {
+ AVStream *st = s->streams[pkt[i]->stream_index];
+ sc[i] = st->priv_data;
+ if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
+ field_nb[i] = av_rescale_rnd(pkt[i]->dts, gxf->time_base.den,
+ (int64_t)48000*gxf->time_base.num, AV_ROUND_UP);
+ field_nb[i] &= ~1; // compare against even field number because audio must be before video
+ } else
+ field_nb[i] = pkt[i]->dts; // dts are field based
}
- return av_interleave_packet_per_dts(s, out, pkt, flush);
+
+ return field_nb[1] > field_nb[0] ||
+ (field_nb[1] == field_nb[0] && sc[1]->order > sc[0]->order);
}
-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,
+static int gxf_interleave_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
+{
+ if (pkt && s->streams[pkt->stream_index]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
+ pkt->duration = 2; // enforce 2 fields
+ return ff_audio_rechunk_interleave(s, out, pkt, flush,
+ ff_interleave_packet_per_dts, gxf_compare_field_nb);
+}
+
+AVOutputFormat ff_gxf_muxer = {
+ .name = "gxf",
+ .long_name = NULL_IF_CONFIG_SMALL("GXF (General eXchange Format)"),
+ .extensions = "gxf",
+ .priv_data_size = sizeof(GXFContext),
+ .audio_codec = AV_CODEC_ID_PCM_S16LE,
+ .video_codec = AV_CODEC_ID_MPEG2VIDEO,
+ .write_header = gxf_write_header,
+ .write_packet = gxf_write_packet,
+ .write_trailer = gxf_write_trailer,
+ .interleave_packet = gxf_interleave_packet,
};
projects / ffmpeg / blobdiff