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Diffstat (limited to 'contrib/ffmpeg/libavformat/rmenc.c')
-rw-r--r--contrib/ffmpeg/libavformat/rmenc.c444
1 files changed, 0 insertions, 444 deletions
diff --git a/contrib/ffmpeg/libavformat/rmenc.c b/contrib/ffmpeg/libavformat/rmenc.c
deleted file mode 100644
index 3a3525d96..000000000
--- a/contrib/ffmpeg/libavformat/rmenc.c
+++ /dev/null
@@ -1,444 +0,0 @@
-/*
- * "Real" compatible muxer.
- * Copyright (c) 2000, 2001 Fabrice Bellard.
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg 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,
- * 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
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-#include "avformat.h"
-#include "rm.h"
-
-/* in ms */
-#define BUFFER_DURATION 0
-
-
-static void put_str(ByteIOContext *s, const char *tag)
-{
- put_be16(s,strlen(tag));
- while (*tag) {
- put_byte(s, *tag++);
- }
-}
-
-static void put_str8(ByteIOContext *s, const char *tag)
-{
- put_byte(s, strlen(tag));
- while (*tag) {
- put_byte(s, *tag++);
- }
-}
-
-static void rv10_write_header(AVFormatContext *ctx,
- int data_size, int index_pos)
-{
- RMContext *rm = ctx->priv_data;
- ByteIOContext *s = ctx->pb;
- StreamInfo *stream;
- unsigned char *data_offset_ptr, *start_ptr;
- 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;
-
- 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 */
-
- put_tag(s,"PROP");
- put_be32(s, 50);
- put_be16(s, 0);
- packet_max_size = 0;
- packet_total_size = 0;
- nb_packets = 0;
- bit_rate = 0;
- duration = 0;
- for(i=0;i<ctx->nb_streams;i++) {
- StreamInfo *stream = &rm->streams[i];
- bit_rate += stream->bit_rate;
- if (stream->packet_max_size > packet_max_size)
- packet_max_size = stream->packet_max_size;
- nb_packets += stream->nb_packets;
- packet_total_size += stream->packet_total_size;
- /* select maximum duration */
- v = (int) (1000.0 * (float)stream->total_frames / stream->frame_rate);
- 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 */
- 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 */
- /* 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 */
- flags = 1 | 2; /* save allowed & perfect play */
- if (url_is_streamed(s))
- flags |= 4; /* live broadcast */
- put_be16(s, flags);
-
- /* comments */
-
- put_tag(s,"CONT");
- size = strlen(ctx->title) + strlen(ctx->author) + strlen(ctx->copyright) +
- strlen(ctx->comment) + 4 * 2 + 10;
- put_be32(s,size);
- put_be16(s,0);
- put_str(s, ctx->title);
- put_str(s, ctx->author);
- put_str(s, ctx->copyright);
- put_str(s, ctx->comment);
-
- for(i=0;i<ctx->nb_streams;i++) {
- int codec_data_size;
-
- stream = &rm->streams[i];
-
- if (stream->enc->codec_type == CODEC_TYPE_AUDIO) {
- desc = "The Audio Stream";
- mimetype = "audio/x-pn-realaudio";
- codec_data_size = 73;
- } else {
- desc = "The Video Stream";
- mimetype = "video/x-pn-realvideo";
- codec_data_size = 34;
- }
-
- put_tag(s,"MDPR");
- size = 10 + 9 * 4 + strlen(desc) + strlen(mimetype) + codec_data_size;
- put_be32(s, size);
- put_be16(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 */
- 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 */
- /* duration */
- if (url_is_streamed(s) || !stream->total_frames)
- put_be32(s, (int)(3600 * 1000));
- else
- put_be32(s, (int)(stream->total_frames * 1000 / stream->frame_rate));
- put_str8(s, desc);
- put_str8(s, mimetype);
- put_be32(s, codec_data_size);
-
- if (stream->enc->codec_type == CODEC_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);
- /* 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 */
-
- switch(sample_rate) {
- case 48000:
- case 24000:
- case 12000:
- fscode = 1;
- break;
- default:
- case 44100:
- case 22050:
- case 11025:
- fscode = 2;
- break;
- case 32000:
- case 16000:
- case 8000:
- fscode = 3;
- }
- put_be16(s, fscode); /* codec additional info, for AC3, 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);
- /* 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);
- put_str8(s, "Int0"); /* codec name */
- put_str8(s, "dnet"); /* codec name */
- 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 */
- } else {
- /* video codec info */
- put_be32(s,34); /* size */
- if(stream->enc->codec_id == CODEC_ID_RV10)
- put_tag(s,"VIDORV10");
- 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);
- else
- put_be32(s,0x20103001);
- //put_be32(s,0x10003000);
- }
- }
-
- /* patch data offset field */
- data_pos = s->buf_ptr - start_ptr;
- rm->data_pos = data_pos;
- data_offset_ptr[0] = data_pos >> 24;
- data_offset_ptr[1] = data_pos >> 16;
- data_offset_ptr[2] = data_pos >> 8;
- data_offset_ptr[3] = data_pos;
-
- /* data stream */
- put_tag(s,"DATA");
- put_be32(s,data_size + 10 + 8);
- put_be16(s,0);
-
- put_be32(s, nb_packets); /* number of packets */
- put_be32(s,0); /* next data header */
-}
-
-static void write_packet_header(AVFormatContext *ctx, StreamInfo *stream,
- int length, int key_frame)
-{
- int timestamp;
- ByteIOContext *s = ctx->pb;
-
- stream->nb_packets++;
- stream->packet_total_size += length;
- 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 */
- 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 */
-}
-
-static int rm_write_header(AVFormatContext *s)
-{
- RMContext *rm = s->priv_data;
- StreamInfo *stream;
- int n;
- AVCodecContext *codec;
-
- for(n=0;n<s->nb_streams;n++) {
- s->streams[n]->id = n;
- codec = s->streams[n]->codec;
- stream = &rm->streams[n];
- memset(stream, 0, sizeof(StreamInfo));
- stream->num = n;
- stream->bit_rate = codec->bit_rate;
- stream->enc = codec;
-
- switch(codec->codec_type) {
- case CODEC_TYPE_AUDIO:
- rm->audio_stream = stream;
- stream->frame_rate = (float)codec->sample_rate / (float)codec->frame_size;
- /* XXX: dummy values */
- stream->packet_max_size = 1024;
- stream->nb_packets = 0;
- stream->total_frames = stream->nb_packets;
- break;
- case CODEC_TYPE_VIDEO:
- rm->video_stream = stream;
- stream->frame_rate = (float)codec->time_base.den / (float)codec->time_base.num;
- /* XXX: dummy values */
- stream->packet_max_size = 4096;
- stream->nb_packets = 0;
- stream->total_frames = stream->nb_packets;
- break;
- default:
- return -1;
- }
- }
-
- rv10_write_header(s, 0, 0);
- put_flush_packet(s->pb);
- return 0;
-}
-
-static int rm_write_audio(AVFormatContext *s, const uint8_t *buf, int size, int flags)
-{
- uint8_t *buf1;
- RMContext *rm = s->priv_data;
- ByteIOContext *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 & PKT_FLAG_KEY));
-
- /* for AC3, the words seems to be reversed */
- for(i=0;i<size;i+=2) {
- buf1[i] = buf[i+1];
- buf1[i+1] = buf[i];
- }
- put_buffer(pb, buf1, size);
- put_flush_packet(pb);
- stream->nb_frames++;
- av_free(buf1);
- return 0;
-}
-
-static int rm_write_video(AVFormatContext *s, const uint8_t *buf, int size, int flags)
-{
- RMContext *rm = s->priv_data;
- ByteIOContext *pb = s->pb;
- StreamInfo *stream = rm->video_stream;
- int key_frame = !!(flags & PKT_FLAG_KEY);
-
- /* XXX: this is incorrect: should be a parameter */
-
- /* Well, I spent some time finding the meaning of these bits. I am
- not sure I understood everything, but it works !! */
-#if 1
- 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
- frame starting from 1 */
- if (key_frame) {
- put_byte(pb, 0x81);
- } else {
- put_byte(pb, 0x01);
- }
- if(size >= 0x4000){
- put_be32(pb, size); /* total frame size */
- put_be32(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 */
- }
-#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 */
-#endif
- put_byte(pb, stream->nb_frames & 0xff);
-
- put_buffer(pb, buf, size);
- put_flush_packet(pb);
-
- stream->nb_frames++;
- return 0;
-}
-
-static int rm_write_packet(AVFormatContext *s, AVPacket *pkt)
-{
- if (s->streams[pkt->stream_index]->codec->codec_type ==
- CODEC_TYPE_AUDIO)
- return rm_write_audio(s, pkt->data, pkt->size, pkt->flags);
- else
- return rm_write_video(s, pkt->data, pkt->size, pkt->flags);
-}
-
-static int rm_write_trailer(AVFormatContext *s)
-{
- RMContext *rm = s->priv_data;
- int data_size, index_pos, i;
- ByteIOContext *pb = s->pb;
-
- if (!url_is_streamed(s->pb)) {
- /* end of file: finish to write header */
- index_pos = url_fseek(pb, 0, SEEK_CUR);
- data_size = index_pos - rm->data_pos;
-
- /* index */
- put_tag(pb, "INDX");
- put_be32(pb, 10 + 10 * s->nb_streams);
- put_be16(pb, 0);
-
- for(i=0;i<s->nb_streams;i++) {
- put_be32(pb, 0); /* zero indices */
- put_be16(pb, i); /* stream number */
- put_be32(pb, 0); /* next index */
- }
- /* undocumented end header */
- put_be32(pb, 0);
- put_be32(pb, 0);
-
- url_fseek(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, index_pos);
- } else {
- /* undocumented end header */
- put_be32(pb, 0);
- put_be32(pb, 0);
- }
- put_flush_packet(pb);
- return 0;
-}
-
-
-AVOutputFormat rm_muxer = {
- "rm",
- "rm format",
- "application/vnd.rn-realmedia",
- "rm,ra",
- sizeof(RMContext),
- CODEC_ID_AC3,
- CODEC_ID_RV10,
- rm_write_header,
- rm_write_packet,
- rm_write_trailer,
-};
generated by cgit v1.2.3 (git 2.25.1) at 2025-05-01 17:58:10 +0000