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-rw-r--r--rmenc.c498
1 files changed, 0 insertions, 498 deletions
diff --git a/rmenc.c b/rmenc.c
deleted file mode 100644
index 60a3b2a3ad..0000000000
--- a/rmenc.c
+++ /dev/null
@@ -1,498 +0,0 @@
-/*
- * RV 1.0 compatible encoder.
- * Copyright (c) 2000 Gerard Lantau.
- *
- * This program 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.
- *
- * This program 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-#include <stdlib.h>
-#include <stdio.h>
-#include <netinet/in.h>
-#include <string.h>
-#include "mpegenc.h"
-#include "mpegvideo.h"
-
-/* in ms */
-#define BUFFER_DURATION 0
-
-typedef struct {
- int nb_packets;
- int packet_total_size;
- int packet_max_size;
- /* codec related output */
- int bit_rate;
- float frame_rate;
- int nb_frames; /* current frame number */
- int total_frames; /* total number of frames */
- int num;
- AVEncodeContext *enc;
-} StreamInfo;
-
-typedef struct {
- StreamInfo streams[2];
- StreamInfo *audio_stream, *video_stream;
- int nb_streams;
- int data_pos; /* position of the data after the header */
-} RMContext;
-
-static void put_long(PutByteContext *s, unsigned int val)
-{
- put_byte(s, val >> 24);
- put_byte(s, val >> 16);
- put_byte(s, val >> 8);
- put_byte(s, val);
-}
-
-static void put_short(PutByteContext *s, unsigned int val)
-{
- put_byte(s, val >> 8);
- put_byte(s, val);
-}
-
-static void put_str(PutByteContext *s, const char *tag)
-{
- put_short(s,strlen(tag));
- while (*tag) {
- put_byte(s, *tag++);
- }
-}
-
-static void put_str8(PutByteContext *s, const char *tag)
-{
- put_byte(s, strlen(tag));
- while (*tag) {
- put_byte(s, *tag++);
- }
-}
-
-int find_tag(const char *tag, char *buf, int buf_size, const char *str)
-{
- int len = strlen(tag);
- char *q;
-
- buf[0] = '\0';
- while (*str) {
- if (*str == '+' && !strncmp(str + 1, tag, len) && str[len+1] == '=') {
- str += len + 2;
- q = buf;
- while (*str && *str != '+' && (q - buf) < (buf_size - 1)) {
- *q++ = *str++;
- }
- /* remove trailing spaces */
- while (q > buf && q[-1] == ' ') q--;
- *q = '\0';
- return 1;
- }
- str++;
- }
- return 0;
-}
-
-static void rv10_write_header(AVFormatContext *ctx,
- int data_size, int index_pos)
-{
- RMContext *rm = ctx->priv_data;
- PutByteContext *s = &ctx->pb;
- StreamInfo *stream;
- unsigned char *data_offset_ptr, *start_ptr;
- char title[1024], author[1024], copyright[1024], comment[1024];
- 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_long(s,18); /* header size */
- put_short(s,0);
- put_long(s,0);
- put_long(s,4 + rm->nb_streams); /* num headers */
-
- put_tag(s,"PROP");
- put_long(s, 50);
- put_short(s, 0);
- packet_max_size = 0;
- packet_total_size = 0;
- nb_packets = 0;
- bit_rate = 0;
- duration = 0;
- for(i=0;i<rm->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_long(s, bit_rate); /* max bit rate */
- put_long(s, bit_rate); /* avg bit rate */
- put_long(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_long(s, packet_avg_size); /* avg packet size */
- put_long(s, nb_packets); /* num packets */
- put_long(s, duration); /* duration */
- put_long(s, BUFFER_DURATION); /* preroll */
- put_long(s, index_pos); /* index offset */
- /* computation of data the data offset */
- data_offset_ptr = s->buf_ptr;
- put_long(s, 0); /* data offset : will be patched after */
- put_short(s, rm->nb_streams); /* num streams */
- flags = 1 | 2; /* save allowed & perfect play */
- if (ctx->is_streamed)
- flags |= 4; /* live broadcast */
- put_short(s, flags);
-
- /* comments */
- find_tag("title", title, sizeof(title), comment_string);
- find_tag("author", author, sizeof(author), comment_string);
- find_tag("copyright", copyright, sizeof(copyright), comment_string);
- find_tag("comment", comment, sizeof(comment), comment_string);
-
- put_tag(s,"CONT");
- size = strlen(title) + strlen(author) + strlen(copyright) + strlen(comment) +
- 4 * 2 + 10;
- put_long(s,size);
- put_short(s,0);
- put_str(s, title);
- put_str(s, author);
- put_str(s, copyright);
- put_str(s, comment);
-
- for(i=0;i<rm->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_long(s, size);
- put_short(s, 0);
-
- put_short(s, i); /* stream number */
- put_long(s, stream->bit_rate); /* max bit rate */
- put_long(s, stream->bit_rate); /* avg bit rate */
- put_long(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_long(s, packet_avg_size); /* avg packet size */
- put_long(s, 0); /* start time */
- put_long(s, BUFFER_DURATION); /* preroll */
- /* duration */
- put_long(s, (int)(stream->total_frames * 1000 / stream->frame_rate));
- put_str8(s, desc);
- put_str8(s, mimetype);
- put_long(s, codec_data_size);
-
- if (stream->enc->codec->type == CODEC_TYPE_AUDIO) {
- int coded_frame_size, fscode, sample_rate;
- sample_rate = stream->enc->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_long(s, 0x00040000); /* version */
- put_tag(s, ".ra4");
- put_long(s, 0x01b53530); /* stream length */
- put_short(s, 4); /* unknown */
- put_long(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_short(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_long(s, coded_frame_size); /* frame length */
- put_long(s, 0x51540); /* unknown */
- put_long(s, 0x249f0); /* unknown */
- put_long(s, 0x249f0); /* unknown */
- put_short(s, 0x01);
- /* frame length : seems to be very important */
- put_short(s, coded_frame_size);
- put_long(s, 0); /* unknown */
- put_short(s, stream->enc->rate); /* sample rate */
- put_long(s, 0x10); /* unknown */
- put_short(s, stream->enc->channels);
- put_str8(s, "Int0"); /* codec name */
- put_str8(s, "dnet"); /* codec name */
- put_short(s, 0); /* title length */
- put_short(s, 0); /* author length */
- put_short(s, 0); /* copyright length */
- put_byte(s, 0); /* end of header */
- } else {
- /* video codec info */
- put_long(s,34); /* size */
- put_tag(s,"VIDORV10");
- put_short(s, stream->enc->width);
- put_short(s, stream->enc->height);
- put_short(s, 24); /* frames per seconds ? */
- put_long(s,0); /* unknown meaning */
- put_short(s, 12); /* unknown meaning */
- put_long(s,0); /* unknown meaning */
- put_short(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 */
- put_long(s,0x10000000);
- //put_long(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_long(s,data_size + 10 + 8);
- put_short(s,0);
-
- put_long(s, nb_packets); /* number of packets */
- put_long(s,0); /* next data header */
-}
-
-static void write_packet_header(AVFormatContext *ctx, StreamInfo *stream,
- int length, int key_frame)
-{
- int timestamp;
- PutByteContext *s = &ctx->pb;
-
- stream->nb_packets++;
- stream->packet_total_size += length;
- if (length > stream->packet_max_size)
- stream->packet_max_size = length;
-
- put_short(s,0); /* version */
- put_short(s,length + 12);
- put_short(s, stream->num); /* stream number */
- timestamp = (1000 * (float)stream->nb_frames) / stream->frame_rate;
- put_long(s, timestamp); /* timestamp */
- put_byte(s, 0); /* reserved */
- put_byte(s, key_frame ? 2 : 0); /* flags */
-}
-
-static int rm_write_header(AVFormatContext *s)
-{
- StreamInfo *stream;
- RMContext *rm;
- int n;
-
- rm = malloc(sizeof(RMContext));
- if (!rm)
- return -1;
- memset(rm, 0, sizeof(RMContext));
- s->priv_data = rm;
- n = 0;
- if (s->audio_enc) {
- stream = &rm->streams[n];
- memset(stream, 0, sizeof(StreamInfo));
- stream->num = n;
- rm->audio_stream = stream;
- stream->bit_rate = s->audio_enc->bit_rate;
- stream->frame_rate = (float)s->audio_enc->rate / (float)s->audio_enc->frame_size;
- stream->enc = s->audio_enc;
- /* XXX: dummy values */
- stream->packet_max_size = 1024;
- stream->nb_packets = 1000;
- stream->total_frames = stream->nb_packets;
- n++;
- }
- if (s->video_enc) {
- stream = &rm->streams[n];
- memset(stream, 0, sizeof(StreamInfo));
- stream->num = n;
- rm->video_stream = stream;
- stream->bit_rate = s->video_enc->bit_rate;
- stream->frame_rate = s->video_enc->rate;
- stream->enc = s->video_enc;
- /* XXX: dummy values */
- stream->packet_max_size = 4096;
- stream->nb_packets = 1000;
- stream->total_frames = stream->nb_packets;
- n++;
- }
- rm->nb_streams = n;
-
- rv10_write_header(s, 0, 0);
- put_flush_packet(&s->pb);
- return 0;
-}
-
-static int rm_write_audio(AVFormatContext *s, UINT8 *buf, int size)
-{
- UINT8 buf1[size];
- RMContext *rm = s->priv_data;
- PutByteContext *pb = &s->pb;
- StreamInfo *stream = rm->audio_stream;
- int i;
-
- write_packet_header(s, stream, size, stream->enc->key_frame);
-
- /* 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++;
- return 0;
-}
-
-static int rm_write_video(AVFormatContext *s, UINT8 *buf, int size)
-{
- RMContext *rm = s->priv_data;
- PutByteContext *pb = &s->pb;
- StreamInfo *stream = rm->video_stream;
- int key_frame = stream->enc->key_frame;
-
- /* 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, 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);
- }
- put_short(pb, 0x4000 | (size)); /* total frame size */
- put_short(pb, 0x4000 | (size)); /* offset from the start or the end */
-#else
- /* seems to be used for prefetch/error correction. Help me ! */
- write_packet_header(s, size + 6);
- put_byte(pb, 0xc0);
- put_short(pb, 0x4000 | size); /* total frame size */
- put_short(pb, 0x4000 + packet_number * 126);
-#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_trailer(AVFormatContext *s)
-{
- RMContext *rm = s->priv_data;
- int data_size, index_pos, i;
- PutByteContext *pb = &s->pb;
-
- if (!s->is_streamed) {
- /* end of file: finish to write header */
- index_pos = put_seek(pb, 0, SEEK_CUR);
- data_size = index_pos - rm->data_pos;
-
- /* index */
- put_tag(pb, "INDX");
- put_long(pb, 10 + 10 * rm->nb_streams);
- put_short(pb, 0);
-
- for(i=0;i<rm->nb_streams;i++) {
- put_long(pb, 0); /* zero indices */
- put_short(pb, i); /* stream number */
- put_long(pb, 0); /* next index */
- }
- /* undocumented end header */
- put_long(pb, 0);
- put_long(pb, 0);
-
- put_seek(pb, 0, SEEK_SET);
- for(i=0;i<rm->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_long(pb, 0);
- put_long(pb, 0);
- }
- put_flush_packet(pb);
-
- free(rm);
- return 0;
-}
-
-AVFormat rm_format = {
- "rm",
- "rm format",
- "audio/x-pn-realaudio",
- "rm,ra",
- CODEC_ID_AC3,
- CODEC_ID_RV10,
- rm_write_header,
- rm_write_audio,
- rm_write_video,
- rm_write_trailer,
-};
-
-AVFormat ra_format = {
- "ra",
- "ra format",
- "audio/x-pn-realaudio",
- "ra",
- CODEC_ID_AC3,
- CODEC_ID_NONE,
- rm_write_header,
- rm_write_audio,
- NULL,
- rm_write_trailer,
-};
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