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Diffstat (limited to 'ffmpeg1/libavformat/vivo.c')
-rw-r--r--ffmpeg1/libavformat/vivo.c313
1 files changed, 0 insertions, 313 deletions
diff --git a/ffmpeg1/libavformat/vivo.c b/ffmpeg1/libavformat/vivo.c
deleted file mode 100644
index e0a1814..0000000
--- a/ffmpeg1/libavformat/vivo.c
+++ /dev/null
@@ -1,313 +0,0 @@
-/*
- * Vivo stream demuxer
- * Copyright (c) 2009 Daniel Verkamp <daniel at drv.nu>
- *
- * 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
- */
-
-/**
- * @file
- * @brief Vivo stream demuxer
- * @author Daniel Verkamp <daniel at drv.nu>
- * @sa http://wiki.multimedia.cx/index.php?title=Vivo
- */
-
-#include "libavutil/parseutils.h"
-#include "avformat.h"
-#include "internal.h"
-
-typedef struct VivoContext {
- int version;
-
- int type;
- int sequence;
- int length;
-
- uint8_t text[1024 + 1];
-} VivoContext;
-
-static int vivo_probe(AVProbeData *p)
-{
- const unsigned char *buf = p->buf;
- unsigned c, length = 0;
-
- // stream must start with packet of type 0 and sequence number 0
- if (*buf++ != 0)
- return 0;
-
- // read at most 2 bytes of coded length
- c = *buf++;
- length = c & 0x7F;
- if (c & 0x80) {
- c = *buf++;
- length = (length << 7) | (c & 0x7F);
- }
- if (c & 0x80 || length > 1024 || length < 21)
- return 0;
-
- if (memcmp(buf, "\r\nVersion:Vivo/", 15))
- return 0;
- buf += 15;
-
- if (*buf < '0' && *buf > '2')
- return 0;
-
- return AVPROBE_SCORE_MAX;
-}
-
-static int vivo_get_packet_header(AVFormatContext *s)
-{
- VivoContext *vivo = s->priv_data;
- AVIOContext *pb = s->pb;
- unsigned c, get_length = 0;
-
- if (url_feof(pb))
- return AVERROR_EOF;
-
- c = avio_r8(pb);
- if (c == 0x82) {
- get_length = 1;
- c = avio_r8(pb);
- }
-
- vivo->type = c >> 4;
- vivo->sequence = c & 0xF;
-
- switch (vivo->type) {
- case 0: get_length = 1; break;
- case 1: vivo->length = 128; break;
- case 2: get_length = 1; break;
- case 3: vivo->length = 40; break;
- case 4: vivo->length = 24; break;
- default:
- av_log(s, AV_LOG_ERROR, "unknown packet type %d\n", vivo->type);
- return AVERROR_INVALIDDATA;
- }
-
- if (get_length) {
- c = avio_r8(pb);
- vivo->length = c & 0x7F;
- if (c & 0x80) {
- c = avio_r8(pb);
- vivo->length = (vivo->length << 7) | (c & 0x7F);
-
- if (c & 0x80) {
- av_log(s, AV_LOG_ERROR, "coded length is more than two bytes\n");
- return AVERROR_INVALIDDATA;
- }
- }
- }
-
- return 0;
-}
-
-static int vivo_read_header(AVFormatContext *s)
-{
- VivoContext *vivo = s->priv_data;
- AVRational fps = { 1, 25};
- AVStream *ast, *vst;
- unsigned char *line, *line_end, *key, *value;
- long value_int;
- int ret, value_used;
- int64_t duration = 0;
- char *end_value;
-
- vst = avformat_new_stream(s, NULL);
- ast = avformat_new_stream(s, NULL);
- if (!ast || !vst)
- return AVERROR(ENOMEM);
-
- ast->codec->sample_rate = 8000;
-
- while (1) {
- if ((ret = vivo_get_packet_header(s)) < 0)
- return ret;
-
- // done reading all text header packets?
- if (vivo->sequence || vivo->type)
- break;
-
- if (vivo->length <= 1024) {
- avio_read(s->pb, vivo->text, vivo->length);
- vivo->text[vivo->length] = 0;
- } else {
- av_log(s, AV_LOG_WARNING, "too big header, skipping\n");
- avio_skip(s->pb, vivo->length);
- continue;
- }
-
- line = vivo->text;
- while (*line) {
- line_end = strstr(line, "\r\n");
- if (!line_end)
- break;
-
- *line_end = 0;
- key = line;
- line = line_end + 2; // skip \r\n
-
- if (line_end == key) // skip blank lines
- continue;
-
- value = strchr(key, ':');
- if (!value) {
- av_log(s, AV_LOG_WARNING, "missing colon in key:value pair '%s'\n",
- value);
- continue;
- }
-
- *value++ = 0;
-
- av_log(s, AV_LOG_DEBUG, "header: '%s' = '%s'\n", key, value);
-
- value_int = strtol(value, &end_value, 10);
- value_used = 0;
- if (*end_value == 0) { // valid integer
- av_log(s, AV_LOG_DEBUG, "got a valid integer (%ld)\n", value_int);
- value_used = 1;
- if (!strcmp(key, "Duration")) {
- duration = value_int;
- } else if (!strcmp(key, "Width")) {
- vst->codec->width = value_int;
- } else if (!strcmp(key, "Height")) {
- vst->codec->height = value_int;
- } else if (!strcmp(key, "TimeUnitNumerator")) {
- fps.num = value_int / 1000;
- } else if (!strcmp(key, "TimeUnitDenominator")) {
- fps.den = value_int;
- } else if (!strcmp(key, "SamplingFrequency")) {
- ast->codec->sample_rate = value_int;
- } else if (!strcmp(key, "NominalBitrate")) {
- } else if (!strcmp(key, "Length")) {
- // size of file
- } else {
- value_used = 0;
- }
- }
-
- if (!strcmp(key, "Version")) {
- if (sscanf(value, "Vivo/%d.", &vivo->version) != 1)
- return AVERROR_INVALIDDATA;
- value_used = 1;
- } else if (!strcmp(key, "FPS")) {
- AVRational tmp;
-
- value_used = 1;
- if (!av_parse_ratio(&tmp, value, 10000, AV_LOG_WARNING, s))
- fps = av_inv_q(tmp);
- }
-
- if (!value_used)
- av_dict_set(&s->metadata, key, value, 0);
- }
- }
-
- avpriv_set_pts_info(ast, 64, 1, ast->codec->sample_rate);
- avpriv_set_pts_info(vst, 64, fps.num, fps.den);
- if (duration)
- s->duration = av_rescale(duration, 1000, 1);
-
- vst->start_time = 0;
- vst->codec->codec_tag = 0;
- vst->codec->codec_type = AVMEDIA_TYPE_VIDEO;
-
- if (vivo->version == 1) {
- vst->codec->codec_id = AV_CODEC_ID_H263;
- ast->codec->codec_id = AV_CODEC_ID_G723_1;
- ast->codec->bits_per_coded_sample = 8;
- ast->codec->block_align = 24;
- ast->codec->bit_rate = 6400;
- }
-
- ast->start_time = 0;
- ast->codec->codec_tag = 0;
- ast->codec->codec_type = AVMEDIA_TYPE_AUDIO;
- ast->codec->channels = 1;
-
- return 0;
-}
-
-static int vivo_read_packet(AVFormatContext *s, AVPacket *pkt)
-{
- VivoContext *vivo = s->priv_data;
- AVIOContext *pb = s->pb;
- unsigned old_sequence = vivo->sequence, old_type = vivo->type;
- int stream_index, ret = 0;
-
-restart:
-
- if (url_feof(pb))
- return AVERROR_EOF;
-
- switch (vivo->type) {
- case 0:
- avio_skip(pb, vivo->length);
- if ((ret = vivo_get_packet_header(s)) < 0)
- return ret;
- goto restart;
- case 1:
- case 2: // video
- stream_index = 0;
- break;
- case 3:
- case 4: // audio
- stream_index = 1;
- break;
- default:
- av_log(s, AV_LOG_ERROR, "unknown packet type %d\n", vivo->type);
- return AVERROR_INVALIDDATA;
- }
-
- if ((ret = av_get_packet(pb, pkt, vivo->length)) < 0)
- goto fail;
-
- // get next packet header
- if ((ret = vivo_get_packet_header(s)) < 0)
- goto fail;
-
- while (vivo->sequence == old_sequence &&
- (((vivo->type - 1) >> 1) == ((old_type - 1) >> 1))) {
- if (url_feof(pb)) {
- ret = AVERROR_EOF;
- break;
- }
-
- if ((ret = av_append_packet(pb, pkt, vivo->length)) < 0)
- break;
-
- // get next packet header
- if ((ret = vivo_get_packet_header(s)) < 0)
- break;
- }
-
- pkt->stream_index = stream_index;
-
-fail:
- if (ret < 0)
- av_free_packet(pkt);
- return ret;
-}
-
-AVInputFormat ff_vivo_demuxer = {
- .name = "vivo",
- .long_name = NULL_IF_CONFIG_SMALL("Vivo"),
- .priv_data_size = sizeof(VivoContext),
- .read_probe = vivo_probe,
- .read_header = vivo_read_header,
- .read_packet = vivo_read_packet,
- .extensions = "viv",
-};
generated by cgit v1.2.3 (git 2.39.1) at 2025-12-06 20:16:26 +0000