* RTMP input format
* Copyright (c) 2009 Kostya Shishkov
*
- * 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 "libavcodec/bytestream.h"
#include "libavutil/avstring.h"
+#include "libavutil/intfloat.h"
#include "avformat.h"
#include "rtmppkt.h"
#include "flv.h"
+#include "url.h"
void ff_amf_write_bool(uint8_t **dst, int val)
{
void ff_amf_write_number(uint8_t **dst, double val)
{
bytestream_put_byte(dst, AMF_DATA_TYPE_NUMBER);
- bytestream_put_be64(dst, av_dbl2int(val));
+ bytestream_put_be64(dst, av_double2int(val));
}
void ff_amf_write_string(uint8_t **dst, const char *str)
int channel_id, timestamp, data_size, offset = 0;
uint32_t extra = 0;
enum RTMPPacketType type;
+ int size = 0;
- if (url_read(h, &hdr, 1) != 1)
+ if (ffurl_read(h, &hdr, 1) != 1)
return AVERROR(EIO);
+ size++;
channel_id = hdr & 0x3F;
if (channel_id < 2) { //special case for channel number >= 64
buf[1] = 0;
- if (url_read_complete(h, buf, channel_id + 1) != channel_id + 1)
+ if (ffurl_read_complete(h, buf, channel_id + 1) != channel_id + 1)
return AVERROR(EIO);
+ size += channel_id + 1;
channel_id = AV_RL16(buf) + 64;
}
data_size = prev_pkt[channel_id].data_size;
hdr >>= 6;
if (hdr == RTMP_PS_ONEBYTE) {
- timestamp = prev_pkt[channel_id].timestamp;
+ timestamp = prev_pkt[channel_id].ts_delta;
} else {
- if (url_read_complete(h, buf, 3) != 3)
+ if (ffurl_read_complete(h, buf, 3) != 3)
return AVERROR(EIO);
+ size += 3;
timestamp = AV_RB24(buf);
if (hdr != RTMP_PS_FOURBYTES) {
- if (url_read_complete(h, buf, 3) != 3)
+ if (ffurl_read_complete(h, buf, 3) != 3)
return AVERROR(EIO);
+ size += 3;
data_size = AV_RB24(buf);
- if (url_read_complete(h, &type, 1) != 1)
+ if (ffurl_read_complete(h, buf, 1) != 1)
return AVERROR(EIO);
+ size++;
+ type = buf[0];
if (hdr == RTMP_PS_TWELVEBYTES) {
- if (url_read_complete(h, buf, 4) != 4)
+ if (ffurl_read_complete(h, buf, 4) != 4)
return AVERROR(EIO);
+ size += 4;
extra = AV_RL32(buf);
}
}
+ if (timestamp == 0xFFFFFF) {
+ if (ffurl_read_complete(h, buf, 4) != 4)
+ return AVERROR(EIO);
+ timestamp = AV_RB32(buf);
+ }
}
+ if (hdr != RTMP_PS_TWELVEBYTES)
+ timestamp += prev_pkt[channel_id].timestamp;
+
if (ff_rtmp_packet_create(p, channel_id, type, timestamp, data_size))
return -1;
p->extra = extra;
prev_pkt[channel_id].channel_id = channel_id;
prev_pkt[channel_id].type = type;
prev_pkt[channel_id].data_size = data_size;
+ prev_pkt[channel_id].ts_delta = timestamp - prev_pkt[channel_id].timestamp;
prev_pkt[channel_id].timestamp = timestamp;
prev_pkt[channel_id].extra = extra;
while (data_size > 0) {
int toread = FFMIN(data_size, chunk_size);
- if (url_read_complete(h, p->data + offset, toread) != toread) {
+ if (ffurl_read_complete(h, p->data + offset, toread) != toread) {
ff_rtmp_packet_destroy(p);
return AVERROR(EIO);
}
data_size -= chunk_size;
offset += chunk_size;
+ size += chunk_size;
if (data_size > 0) {
- url_read_complete(h, &t, 1); //marker
+ ffurl_read_complete(h, &t, 1); //marker
+ size++;
if (t != (0xC0 + channel_id))
return -1;
}
}
- return 0;
+ return size;
}
int ff_rtmp_packet_write(URLContext *h, RTMPPacket *pkt,
uint8_t pkt_hdr[16], *p = pkt_hdr;
int mode = RTMP_PS_TWELVEBYTES;
int off = 0;
+ int size = 0;
+
+ pkt->ts_delta = pkt->timestamp - prev_pkt[pkt->channel_id].timestamp;
+
+ //if channel_id = 0, this is first presentation of prev_pkt, send full hdr.
+ if (prev_pkt[pkt->channel_id].channel_id &&
+ pkt->extra == prev_pkt[pkt->channel_id].extra) {
+ if (pkt->type == prev_pkt[pkt->channel_id].type &&
+ pkt->data_size == prev_pkt[pkt->channel_id].data_size) {
+ mode = RTMP_PS_FOURBYTES;
+ if (pkt->ts_delta == prev_pkt[pkt->channel_id].ts_delta)
+ mode = RTMP_PS_ONEBYTE;
+ } else {
+ mode = RTMP_PS_EIGHTBYTES;
+ }
+ }
- //TODO: header compression
- bytestream_put_byte(&p, pkt->channel_id | (mode << 6));
+ if (pkt->channel_id < 64) {
+ bytestream_put_byte(&p, pkt->channel_id | (mode << 6));
+ } else if (pkt->channel_id < 64 + 256) {
+ bytestream_put_byte(&p, 0 | (mode << 6));
+ bytestream_put_byte(&p, pkt->channel_id - 64);
+ } else {
+ bytestream_put_byte(&p, 1 | (mode << 6));
+ bytestream_put_le16(&p, pkt->channel_id - 64);
+ }
if (mode != RTMP_PS_ONEBYTE) {
- bytestream_put_be24(&p, pkt->timestamp);
+ uint32_t timestamp = pkt->timestamp;
+ if (mode != RTMP_PS_TWELVEBYTES)
+ timestamp = pkt->ts_delta;
+ bytestream_put_be24(&p, timestamp >= 0xFFFFFF ? 0xFFFFFF : timestamp);
if (mode != RTMP_PS_FOURBYTES) {
bytestream_put_be24(&p, pkt->data_size);
bytestream_put_byte(&p, pkt->type);
if (mode == RTMP_PS_TWELVEBYTES)
bytestream_put_le32(&p, pkt->extra);
}
+ if (timestamp >= 0xFFFFFF)
+ bytestream_put_be32(&p, timestamp);
+ }
+ // save history
+ prev_pkt[pkt->channel_id].channel_id = pkt->channel_id;
+ prev_pkt[pkt->channel_id].type = pkt->type;
+ prev_pkt[pkt->channel_id].data_size = pkt->data_size;
+ prev_pkt[pkt->channel_id].timestamp = pkt->timestamp;
+ if (mode != RTMP_PS_TWELVEBYTES) {
+ prev_pkt[pkt->channel_id].ts_delta = pkt->ts_delta;
+ } else {
+ prev_pkt[pkt->channel_id].ts_delta = pkt->timestamp;
}
- url_write(h, pkt_hdr, p-pkt_hdr);
+ prev_pkt[pkt->channel_id].extra = pkt->extra;
+
+ ffurl_write(h, pkt_hdr, p-pkt_hdr);
+ size = p - pkt_hdr + pkt->data_size;
while (off < pkt->data_size) {
int towrite = FFMIN(chunk_size, pkt->data_size - off);
- url_write(h, pkt->data + off, towrite);
+ ffurl_write(h, pkt->data + off, towrite);
off += towrite;
if (off < pkt->data_size) {
uint8_t marker = 0xC0 | pkt->channel_id;
- url_write(h, &marker, 1);
+ ffurl_write(h, &marker, 1);
+ size++;
}
}
- return 0;
+ return size;
}
int ff_rtmp_packet_create(RTMPPacket *pkt, int channel_id, RTMPPacketType type,
int timestamp, int size)
{
- pkt->data = av_malloc(size);
- if (!pkt->data)
- return AVERROR(ENOMEM);
+ if (size) {
+ pkt->data = av_malloc(size);
+ if (!pkt->data)
+ return AVERROR(ENOMEM);
+ }
pkt->data_size = size;
pkt->channel_id = channel_id;
pkt->type = type;
pkt->timestamp = timestamp;
pkt->extra = 0;
+ pkt->ts_delta = 0;
return 0;
}
int namelen = strlen(name);
int len;
+ while (*data != AMF_DATA_TYPE_OBJECT && data < data_end) {
+ len = ff_amf_tag_size(data, data_end);
+ if (len < 0)
+ len = data_end - data;
+ data += len;
+ }
if (data_end - data < 3)
return -1;
- if (*data++ != AMF_DATA_TYPE_OBJECT)
- return -1;
+ data++;
for (;;) {
int size = bytestream_get_be16(&data);
if (!size)
if (size == namelen && !memcmp(data-size, name, namelen)) {
switch (*data++) {
case AMF_DATA_TYPE_NUMBER:
- snprintf(dst, dst_size, "%g", av_int2dbl(AV_RB64(data)));
+ snprintf(dst, dst_size, "%g", av_int2double(AV_RB64(data)));
break;
case AMF_DATA_TYPE_BOOL:
snprintf(dst, dst_size, "%s", *data ? "true" : "false");
}
return -1;
}
+
+static const char* rtmp_packet_type(int type)
+{
+ switch (type) {
+ case RTMP_PT_CHUNK_SIZE: return "chunk size";
+ case RTMP_PT_BYTES_READ: return "bytes read";
+ case RTMP_PT_PING: return "ping";
+ case RTMP_PT_SERVER_BW: return "server bandwidth";
+ case RTMP_PT_CLIENT_BW: return "client bandwidth";
+ case RTMP_PT_AUDIO: return "audio packet";
+ case RTMP_PT_VIDEO: return "video packet";
+ case RTMP_PT_FLEX_STREAM: return "Flex shared stream";
+ case RTMP_PT_FLEX_OBJECT: return "Flex shared object";
+ case RTMP_PT_FLEX_MESSAGE: return "Flex shared message";
+ case RTMP_PT_NOTIFY: return "notification";
+ case RTMP_PT_SHARED_OBJ: return "shared object";
+ case RTMP_PT_INVOKE: return "invoke";
+ case RTMP_PT_METADATA: return "metadata";
+ default: return "unknown";
+ }
+}
+
+static void ff_amf_tag_contents(void *ctx, const uint8_t *data, const uint8_t *data_end)
+{
+ int size;
+ char buf[1024];
+
+ if (data >= data_end)
+ return;
+ switch (*data++) {
+ case AMF_DATA_TYPE_NUMBER:
+ av_log(ctx, AV_LOG_DEBUG, " number %g\n", av_int2double(AV_RB64(data)));
+ return;
+ case AMF_DATA_TYPE_BOOL:
+ av_log(ctx, AV_LOG_DEBUG, " bool %d\n", *data);
+ return;
+ case AMF_DATA_TYPE_STRING:
+ case AMF_DATA_TYPE_LONG_STRING:
+ if (data[-1] == AMF_DATA_TYPE_STRING) {
+ size = bytestream_get_be16(&data);
+ } else {
+ size = bytestream_get_be32(&data);
+ }
+ size = FFMIN(size, 1023);
+ memcpy(buf, data, size);
+ buf[size] = 0;
+ av_log(ctx, AV_LOG_DEBUG, " string '%s'\n", buf);
+ return;
+ case AMF_DATA_TYPE_NULL:
+ av_log(ctx, AV_LOG_DEBUG, " NULL\n");
+ return;
+ case AMF_DATA_TYPE_ARRAY:
+ data += 4;
+ case AMF_DATA_TYPE_OBJECT:
+ av_log(ctx, AV_LOG_DEBUG, " {\n");
+ for (;;) {
+ int size = bytestream_get_be16(&data);
+ int t;
+ memcpy(buf, data, size);
+ buf[size] = 0;
+ if (!size) {
+ av_log(ctx, AV_LOG_DEBUG, " }\n");
+ data++;
+ break;
+ }
+ if (data + size >= data_end || data + size < data)
+ return;
+ data += size;
+ av_log(ctx, AV_LOG_DEBUG, " %s: ", buf);
+ ff_amf_tag_contents(ctx, data, data_end);
+ t = ff_amf_tag_size(data, data_end);
+ if (t < 0 || data + t >= data_end)
+ return;
+ data += t;
+ }
+ return;
+ case AMF_DATA_TYPE_OBJECT_END:
+ av_log(ctx, AV_LOG_DEBUG, " }\n");
+ return;
+ default:
+ return;
+ }
+}
+
+void ff_rtmp_packet_dump(void *ctx, RTMPPacket *p)
+{
+ av_log(ctx, AV_LOG_DEBUG, "RTMP packet type '%s'(%d) for channel %d, timestamp %d, extra field %d size %d\n",
+ rtmp_packet_type(p->type), p->type, p->channel_id, p->timestamp, p->extra, p->data_size);
+ if (p->type == RTMP_PT_INVOKE || p->type == RTMP_PT_NOTIFY) {
+ uint8_t *src = p->data, *src_end = p->data + p->data_size;
+ while (src < src_end) {
+ int sz;
+ ff_amf_tag_contents(ctx, src, src_end);
+ sz = ff_amf_tag_size(src, src_end);
+ if (sz < 0)
+ break;
+ src += sz;
+ }
+ } else if (p->type == RTMP_PT_SERVER_BW){
+ av_log(ctx, AV_LOG_DEBUG, "Server BW = %d\n", AV_RB32(p->data));
+ } else if (p->type == RTMP_PT_CLIENT_BW){
+ av_log(ctx, AV_LOG_DEBUG, "Client BW = %d\n", AV_RB32(p->data));
+ } else if (p->type != RTMP_PT_AUDIO && p->type != RTMP_PT_VIDEO && p->type != RTMP_PT_METADATA) {
+ int i;
+ for (i = 0; i < p->data_size; i++)
+ av_log(ctx, AV_LOG_DEBUG, " %02X", p->data[i]);
+ av_log(ctx, AV_LOG_DEBUG, "\n");
+ }
+}
projects / ffmpeg / blobdiff