* "Real" compatible muxer.
* Copyright (c) 2000, 2001 Fabrice Bellard
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avformat.h"
+#include "avio_internal.h"
#include "rm.h"
+#include "libavutil/dict.h"
-typedef struct {
+typedef struct StreamInfo {
int nb_packets;
int packet_total_size;
int packet_max_size;
int nb_frames; /* current frame number */
int total_frames; /* total number of frames */
int num;
- AVCodecContext *enc;
+ AVCodecParameters *par;
} StreamInfo;
-typedef struct {
+typedef struct RMMuxContext {
StreamInfo streams[2];
StreamInfo *audio_stream, *video_stream;
int data_pos; /* position of the data after the header */
/* in ms */
#define BUFFER_DURATION 0
+/* the header needs at most 7 + 4 + 12 B */
+#define MAX_HEADER_SIZE (7 + 4 + 12)
+/* UINT16_MAX is the maximal chunk size */
+#define MAX_PACKET_SIZE (UINT16_MAX - MAX_HEADER_SIZE)
static void put_str(AVIOContext *s, const char *tag)
{
- put_be16(s,strlen(tag));
+ avio_wb16(s,strlen(tag));
while (*tag) {
- put_byte(s, *tag++);
+ avio_w8(s, *tag++);
}
}
static void put_str8(AVIOContext *s, const char *tag)
{
- put_byte(s, strlen(tag));
+ avio_w8(s, strlen(tag));
while (*tag) {
- put_byte(s, *tag++);
+ avio_w8(s, *tag++);
}
}
const char *desc, *mimetype;
int nb_packets, packet_total_size, packet_max_size, size, packet_avg_size, i;
int bit_rate, v, duration, flags, data_pos;
- AVMetadataTag *tag;
+ AVDictionaryEntry *tag;
start_ptr = s->buf_ptr;
- put_tag(s, ".RMF");
- put_be32(s,18); /* header size */
- put_be16(s,0);
- put_be32(s,0);
- put_be32(s,4 + ctx->nb_streams); /* num headers */
+ ffio_wfourcc(s, ".RMF");
+ avio_wb32(s,18); /* header size */
+ avio_wb16(s,0);
+ avio_wb32(s,0);
+ avio_wb32(s,4 + ctx->nb_streams); /* num headers */
- put_tag(s,"PROP");
- put_be32(s, 50);
- put_be16(s, 0);
+ ffio_wfourcc(s,"PROP");
+ avio_wb32(s, 50);
+ avio_wb16(s, 0);
packet_max_size = 0;
packet_total_size = 0;
nb_packets = 0;
if (v > duration)
duration = v;
}
- put_be32(s, bit_rate); /* max bit rate */
- put_be32(s, bit_rate); /* avg bit rate */
- put_be32(s, packet_max_size); /* max packet size */
+ avio_wb32(s, bit_rate); /* max bit rate */
+ avio_wb32(s, bit_rate); /* avg bit rate */
+ avio_wb32(s, packet_max_size); /* max packet size */
if (nb_packets > 0)
packet_avg_size = packet_total_size / nb_packets;
else
packet_avg_size = 0;
- put_be32(s, packet_avg_size); /* avg packet size */
- put_be32(s, nb_packets); /* num packets */
- put_be32(s, duration); /* duration */
- put_be32(s, BUFFER_DURATION); /* preroll */
- put_be32(s, index_pos); /* index offset */
+ avio_wb32(s, packet_avg_size); /* avg packet size */
+ avio_wb32(s, nb_packets); /* num packets */
+ avio_wb32(s, duration); /* duration */
+ avio_wb32(s, BUFFER_DURATION); /* preroll */
+ avio_wb32(s, index_pos); /* index offset */
/* computation of data the data offset */
data_offset_ptr = s->buf_ptr;
- put_be32(s, 0); /* data offset : will be patched after */
- put_be16(s, ctx->nb_streams); /* num streams */
+ avio_wb32(s, 0); /* data offset : will be patched after */
+ avio_wb16(s, ctx->nb_streams); /* num streams */
flags = 1 | 2; /* save allowed & perfect play */
- if (url_is_streamed(s))
+ if (!s->seekable)
flags |= 4; /* live broadcast */
- put_be16(s, flags);
+ avio_wb16(s, flags);
/* comments */
- put_tag(s,"CONT");
+ ffio_wfourcc(s,"CONT");
size = 4 * 2 + 10;
for(i=0; i<FF_ARRAY_ELEMS(ff_rm_metadata); i++) {
- tag = av_metadata_get(ctx->metadata, ff_rm_metadata[i], NULL, 0);
+ tag = av_dict_get(ctx->metadata, ff_rm_metadata[i], NULL, 0);
if(tag) size += strlen(tag->value);
}
- put_be32(s,size);
- put_be16(s,0);
+ avio_wb32(s,size);
+ avio_wb16(s,0);
for(i=0; i<FF_ARRAY_ELEMS(ff_rm_metadata); i++) {
- tag = av_metadata_get(ctx->metadata, ff_rm_metadata[i], NULL, 0);
+ tag = av_dict_get(ctx->metadata, ff_rm_metadata[i], NULL, 0);
put_str(s, tag ? tag->value : "");
}
stream = &rm->streams[i];
- if (stream->enc->codec_type == AVMEDIA_TYPE_AUDIO) {
+ if (stream->par->codec_type == AVMEDIA_TYPE_AUDIO) {
desc = "The Audio Stream";
mimetype = "audio/x-pn-realaudio";
codec_data_size = 73;
codec_data_size = 34;
}
- put_tag(s,"MDPR");
+ ffio_wfourcc(s,"MDPR");
size = 10 + 9 * 4 + strlen(desc) + strlen(mimetype) + codec_data_size;
- put_be32(s, size);
- put_be16(s, 0);
+ avio_wb32(s, size);
+ avio_wb16(s, 0);
- put_be16(s, i); /* stream number */
- put_be32(s, stream->bit_rate); /* max bit rate */
- put_be32(s, stream->bit_rate); /* avg bit rate */
- put_be32(s, stream->packet_max_size); /* max packet size */
+ avio_wb16(s, i); /* stream number */
+ avio_wb32(s, stream->bit_rate); /* max bit rate */
+ avio_wb32(s, stream->bit_rate); /* avg bit rate */
+ avio_wb32(s, stream->packet_max_size); /* max packet size */
if (stream->nb_packets > 0)
packet_avg_size = stream->packet_total_size /
stream->nb_packets;
else
packet_avg_size = 0;
- put_be32(s, packet_avg_size); /* avg packet size */
- put_be32(s, 0); /* start time */
- put_be32(s, BUFFER_DURATION); /* preroll */
+ avio_wb32(s, packet_avg_size); /* avg packet size */
+ avio_wb32(s, 0); /* start time */
+ avio_wb32(s, BUFFER_DURATION); /* preroll */
/* duration */
- if (url_is_streamed(s) || !stream->total_frames)
- put_be32(s, (int)(3600 * 1000));
+ if (!s->seekable || !stream->total_frames)
+ avio_wb32(s, (int)(3600 * 1000));
else
- put_be32(s, (int)(stream->total_frames * 1000 / stream->frame_rate));
+ avio_wb32(s, (int)(stream->total_frames * 1000 / stream->frame_rate));
put_str8(s, desc);
put_str8(s, mimetype);
- put_be32(s, codec_data_size);
+ avio_wb32(s, codec_data_size);
- if (stream->enc->codec_type == AVMEDIA_TYPE_AUDIO) {
+ if (stream->par->codec_type == AVMEDIA_TYPE_AUDIO) {
int coded_frame_size, fscode, sample_rate;
- sample_rate = stream->enc->sample_rate;
- coded_frame_size = (stream->enc->bit_rate *
- stream->enc->frame_size) / (8 * sample_rate);
+ int frame_size = av_get_audio_frame_duration2(stream->par, 0);
+ sample_rate = stream->par->sample_rate;
+ coded_frame_size = (stream->par->bit_rate *
+ frame_size) / (8 * sample_rate);
/* audio codec info */
- put_tag(s, ".ra");
- put_byte(s, 0xfd);
- put_be32(s, 0x00040000); /* version */
- put_tag(s, ".ra4");
- put_be32(s, 0x01b53530); /* stream length */
- put_be16(s, 4); /* unknown */
- put_be32(s, 0x39); /* header size */
+ avio_write(s, ".ra", 3);
+ avio_w8(s, 0xfd);
+ avio_wb32(s, 0x00040000); /* version */
+ ffio_wfourcc(s, ".ra4");
+ avio_wb32(s, 0x01b53530); /* stream length */
+ avio_wb16(s, 4); /* unknown */
+ avio_wb32(s, 0x39); /* header size */
switch(sample_rate) {
case 48000:
case 8000:
fscode = 3;
}
- put_be16(s, fscode); /* codec additional info, for AC-3, seems
+ avio_wb16(s, fscode); /* codec additional info, for AC-3, seems
to be a frequency code */
/* special hack to compensate rounding errors... */
if (coded_frame_size == 557)
coded_frame_size--;
- put_be32(s, coded_frame_size); /* frame length */
- put_be32(s, 0x51540); /* unknown */
- put_be32(s, 0x249f0); /* unknown */
- put_be32(s, 0x249f0); /* unknown */
- put_be16(s, 0x01);
+ avio_wb32(s, coded_frame_size); /* frame length */
+ avio_wb32(s, 0x51540); /* unknown */
+ avio_wb32(s, 0x249f0); /* unknown */
+ avio_wb32(s, 0x249f0); /* unknown */
+ avio_wb16(s, 0x01);
/* frame length : seems to be very important */
- put_be16(s, coded_frame_size);
- put_be32(s, 0); /* unknown */
- put_be16(s, stream->enc->sample_rate); /* sample rate */
- put_be32(s, 0x10); /* unknown */
- put_be16(s, stream->enc->channels);
+ avio_wb16(s, coded_frame_size);
+ avio_wb32(s, 0); /* unknown */
+ avio_wb16(s, stream->par->sample_rate); /* sample rate */
+ avio_wb32(s, 0x10); /* unknown */
+ avio_wb16(s, stream->par->channels);
put_str8(s, "Int0"); /* codec name */
- if (stream->enc->codec_tag) {
- put_byte(s, 4); /* tag length */
- put_le32(s, stream->enc->codec_tag);
+ if (stream->par->codec_tag) {
+ avio_w8(s, 4); /* tag length */
+ avio_wl32(s, stream->par->codec_tag);
} else {
av_log(ctx, AV_LOG_ERROR, "Invalid codec tag\n");
return -1;
}
- put_be16(s, 0); /* title length */
- put_be16(s, 0); /* author length */
- put_be16(s, 0); /* copyright length */
- put_byte(s, 0); /* end of header */
+ avio_wb16(s, 0); /* title length */
+ avio_wb16(s, 0); /* author length */
+ avio_wb16(s, 0); /* copyright length */
+ avio_w8(s, 0); /* end of header */
} else {
/* video codec info */
- put_be32(s,34); /* size */
- if(stream->enc->codec_id == CODEC_ID_RV10)
- put_tag(s,"VIDORV10");
+ avio_wb32(s,34); /* size */
+ ffio_wfourcc(s, "VIDO");
+ if(stream->par->codec_id == AV_CODEC_ID_RV10)
+ ffio_wfourcc(s,"RV10");
else
- put_tag(s,"VIDORV20");
- put_be16(s, stream->enc->width);
- put_be16(s, stream->enc->height);
- put_be16(s, (int) stream->frame_rate); /* frames per seconds ? */
- put_be32(s,0); /* unknown meaning */
- put_be16(s, (int) stream->frame_rate); /* unknown meaning */
- put_be32(s,0); /* unknown meaning */
- put_be16(s, 8); /* unknown meaning */
- /* Seems to be the codec version: only use basic H263. The next
- versions seems to add a diffential DC coding as in
- MPEG... nothing new under the sun */
- if(stream->enc->codec_id == CODEC_ID_RV10)
- put_be32(s,0x10000000);
+ ffio_wfourcc(s,"RV20");
+ avio_wb16(s, stream->par->width);
+ avio_wb16(s, stream->par->height);
+ avio_wb16(s, (int) stream->frame_rate); /* frames per seconds ? */
+ avio_wb32(s,0); /* unknown meaning */
+ avio_wb16(s, (int) stream->frame_rate); /* unknown meaning */
+ avio_wb32(s,0); /* unknown meaning */
+ avio_wb16(s, 8); /* unknown meaning */
+ /* Seems to be the codec version: only use basic H.263. The next
+ versions seems to add a differential DC coding as in
+ MPEG... nothing new under the sun. */
+ if(stream->par->codec_id == AV_CODEC_ID_RV10)
+ avio_wb32(s,0x10000000);
else
- put_be32(s,0x20103001);
- //put_be32(s,0x10003000);
+ avio_wb32(s,0x20103001);
+ //avio_wb32(s,0x10003000);
}
}
data_offset_ptr[3] = data_pos;
/* data stream */
- put_tag(s,"DATA");
- put_be32(s,data_size + 10 + 8);
- put_be16(s,0);
+ ffio_wfourcc(s, "DATA");
+ avio_wb32(s,data_size + 10 + 8);
+ avio_wb16(s,0);
- put_be32(s, nb_packets); /* number of packets */
- put_be32(s,0); /* next data header */
+ avio_wb32(s, nb_packets); /* number of packets */
+ avio_wb32(s,0); /* next data header */
return 0;
}
if (length > stream->packet_max_size)
stream->packet_max_size = length;
- put_be16(s,0); /* version */
- put_be16(s,length + 12);
- put_be16(s, stream->num); /* stream number */
+ avio_wb16(s,0); /* version */
+ avio_wb16(s,length + 12);
+ avio_wb16(s, stream->num); /* stream number */
timestamp = (1000 * (float)stream->nb_frames) / stream->frame_rate;
- put_be32(s, timestamp); /* timestamp */
- put_byte(s, 0); /* reserved */
- put_byte(s, key_frame ? 2 : 0); /* flags */
+ avio_wb32(s, timestamp); /* timestamp */
+ avio_w8(s, 0); /* reserved */
+ avio_w8(s, key_frame ? 2 : 0); /* flags */
}
static int rm_write_header(AVFormatContext *s)
RMMuxContext *rm = s->priv_data;
StreamInfo *stream;
int n;
- AVCodecContext *codec;
+ AVCodecParameters *par;
for(n=0;n<s->nb_streams;n++) {
+ AVStream *st = s->streams[n];
+ int frame_size;
+
s->streams[n]->id = n;
- codec = s->streams[n]->codec;
+ par = s->streams[n]->codecpar;
stream = &rm->streams[n];
memset(stream, 0, sizeof(StreamInfo));
stream->num = n;
- stream->bit_rate = codec->bit_rate;
- stream->enc = codec;
+ stream->bit_rate = par->bit_rate;
+ stream->par = par;
- switch(codec->codec_type) {
+ switch (par->codec_type) {
case AVMEDIA_TYPE_AUDIO:
rm->audio_stream = stream;
- stream->frame_rate = (float)codec->sample_rate / (float)codec->frame_size;
+ frame_size = av_get_audio_frame_duration2(par, 0);
+ stream->frame_rate = (float)par->sample_rate / (float)frame_size;
/* XXX: dummy values */
stream->packet_max_size = 1024;
stream->nb_packets = 0;
break;
case AVMEDIA_TYPE_VIDEO:
rm->video_stream = stream;
- stream->frame_rate = (float)codec->time_base.den / (float)codec->time_base.num;
+ // TODO: should be avg_frame_rate
+ stream->frame_rate = (float)st->time_base.den / (float)st->time_base.num;
/* XXX: dummy values */
stream->packet_max_size = 4096;
stream->nb_packets = 0;
if (rv10_write_header(s, 0, 0))
return AVERROR_INVALIDDATA;
- put_flush_packet(s->pb);
+ avio_flush(s->pb);
return 0;
}
static int rm_write_audio(AVFormatContext *s, const uint8_t *buf, int size, int flags)
{
- uint8_t *buf1;
RMMuxContext *rm = s->priv_data;
AVIOContext *pb = s->pb;
StreamInfo *stream = rm->audio_stream;
int i;
- /* XXX: suppress this malloc */
- buf1= (uint8_t*) av_malloc( size * sizeof(uint8_t) );
-
write_packet_header(s, stream, size, !!(flags & AV_PKT_FLAG_KEY));
- if (stream->enc->codec_id == CODEC_ID_AC3) {
+ if (stream->par->codec_id == AV_CODEC_ID_AC3) {
/* for AC-3, the words seem to be reversed */
- for(i=0;i<size;i+=2) {
- buf1[i] = buf[i+1];
- buf1[i+1] = buf[i];
+ for (i = 0; i < size; i += 2) {
+ avio_w8(pb, buf[i + 1]);
+ avio_w8(pb, buf[i]);
}
- put_buffer(pb, buf1, size);
} else {
- put_buffer(pb, buf, size);
+ avio_write(pb, buf, size);
}
- put_flush_packet(pb);
stream->nb_frames++;
- av_free(buf1);
return 0;
}
/* Well, I spent some time finding the meaning of these bits. I am
not sure I understood everything, but it works !! */
#if 1
+ if (size > MAX_PACKET_SIZE) {
+ avpriv_report_missing_feature(s, "Muxing packets larger than 64 kB");
+ return AVERROR(ENOSYS);
+ }
write_packet_header(s, stream, size + 7 + (size >= 0x4000)*4, key_frame);
/* bit 7: '1' if final packet of a frame converted in several packets */
- put_byte(pb, 0x81);
- /* bit 7: '1' if I frame. bits 6..0 : sequence number in current
+ avio_w8(pb, 0x81);
+ /* bit 7: '1' if I-frame. bits 6..0 : sequence number in current
frame starting from 1 */
if (key_frame) {
- put_byte(pb, 0x81);
+ avio_w8(pb, 0x81);
} else {
- put_byte(pb, 0x01);
+ avio_w8(pb, 0x01);
}
if(size >= 0x4000){
- put_be32(pb, size); /* total frame size */
- put_be32(pb, size); /* offset from the start or the end */
+ avio_wb32(pb, size); /* total frame size */
+ avio_wb32(pb, size); /* offset from the start or the end */
}else{
- put_be16(pb, 0x4000 | size); /* total frame size */
- put_be16(pb, 0x4000 | size); /* offset from the start or the end */
+ avio_wb16(pb, 0x4000 | size); /* total frame size */
+ avio_wb16(pb, 0x4000 | size); /* offset from the start or the end */
}
#else
/* full frame */
write_packet_header(s, size + 6);
- put_byte(pb, 0xc0);
- put_be16(pb, 0x4000 + size); /* total frame size */
- put_be16(pb, 0x4000 + packet_number * 126); /* position in stream */
+ avio_w8(pb, 0xc0);
+ avio_wb16(pb, 0x4000 + size); /* total frame size */
+ avio_wb16(pb, 0x4000 + packet_number * 126); /* position in stream */
#endif
- put_byte(pb, stream->nb_frames & 0xff);
+ avio_w8(pb, stream->nb_frames & 0xff);
- put_buffer(pb, buf, size);
- put_flush_packet(pb);
+ avio_write(pb, buf, size);
stream->nb_frames++;
return 0;
static int rm_write_packet(AVFormatContext *s, AVPacket *pkt)
{
- if (s->streams[pkt->stream_index]->codec->codec_type ==
+ if (s->streams[pkt->stream_index]->codecpar->codec_type ==
AVMEDIA_TYPE_AUDIO)
return rm_write_audio(s, pkt->data, pkt->size, pkt->flags);
else
int data_size, index_pos, i;
AVIOContext *pb = s->pb;
- if (!url_is_streamed(s->pb)) {
+ if (s->pb->seekable) {
/* end of file: finish to write header */
- index_pos = url_fseek(pb, 0, SEEK_CUR);
+ index_pos = avio_tell(pb);
data_size = index_pos - rm->data_pos;
/* FIXME: write index */
/* undocumented end header */
- put_be32(pb, 0);
- put_be32(pb, 0);
+ avio_wb32(pb, 0);
+ avio_wb32(pb, 0);
- url_fseek(pb, 0, SEEK_SET);
+ avio_seek(pb, 0, SEEK_SET);
for(i=0;i<s->nb_streams;i++)
rm->streams[i].total_frames = rm->streams[i].nb_frames;
rv10_write_header(s, data_size, 0);
} else {
/* undocumented end header */
- put_be32(pb, 0);
- put_be32(pb, 0);
+ avio_wb32(pb, 0);
+ avio_wb32(pb, 0);
}
- put_flush_packet(pb);
+
return 0;
}
AVOutputFormat ff_rm_muxer = {
- "rm",
- NULL_IF_CONFIG_SMALL("RealMedia format"),
- "application/vnd.rn-realmedia",
- "rm,ra",
- sizeof(RMMuxContext),
- CODEC_ID_AC3,
- CODEC_ID_RV10,
- rm_write_header,
- rm_write_packet,
- rm_write_trailer,
- .codec_tag= (const AVCodecTag* const []){ff_rm_codec_tags, 0},
+ .name = "rm",
+ .long_name = NULL_IF_CONFIG_SMALL("RealMedia"),
+ .mime_type = "application/vnd.rn-realmedia",
+ .extensions = "rm,ra",
+ .priv_data_size = sizeof(RMMuxContext),
+ .audio_codec = AV_CODEC_ID_AC3,
+ .video_codec = AV_CODEC_ID_RV10,
+ .write_header = rm_write_header,
+ .write_packet = rm_write_packet,
+ .write_trailer = rm_write_trailer,
+ .codec_tag = (const AVCodecTag* const []){ ff_rm_codec_tags, 0 },
};
projects / ffmpeg / blobdiff