*/
/**
- * @file libavformat/rtmpproto.c
+ * @file
* RTMP protocol
*/
#include "libavutil/lfg.h"
#include "libavutil/sha.h"
#include "avformat.h"
+#include "internal.h"
#include "network.h"
#define LOG_CONTEXT s
#endif
+//#define DEBUG
+
/** RTMP protocol handler state */
typedef enum {
STATE_START, ///< client has not done anything yet
STATE_READY, ///< client has sent all needed commands and waits for server reply
STATE_PLAYING, ///< client has started receiving multimedia data from server
STATE_PUBLISHING, ///< client has started sending multimedia data to server (for output)
+ STATE_STOPPED, ///< the broadcast has been stopped
} ClientState;
/** protocol handler context */
int flv_size; ///< current buffer size
int flv_off; ///< number of bytes read from current buffer
RTMPPacket out_pkt; ///< rtmp packet, created from flv a/v or metadata (for output)
+ uint32_t client_report_size; ///< number of bytes after which client should report to server
+ uint32_t bytes_read; ///< number of bytes read from server
+ uint32_t last_bytes_read; ///< number of bytes read last reported to server
} RTMPContext;
#define PLAYER_KEY_OPEN_PART_LEN 30 ///< length of partial key used for first client digest signing
};
/**
- * Generates 'connect' call and sends it to the server.
+ * Generate 'connect' call and send it to the server.
*/
static void gen_connect(URLContext *s, RTMPContext *rt, const char *proto,
const char *host, int port)
ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE, 0, 4096);
p = pkt.data;
- snprintf(tcurl, sizeof(tcurl), "%s://%s:%d/%s", proto, host, port, rt->app);
+ ff_url_join(tcurl, sizeof(tcurl), proto, NULL, host, port, "/%s", rt->app);
ff_amf_write_string(&p, "connect");
ff_amf_write_number(&p, 1.0);
ff_amf_write_object_start(&p);
ff_amf_write_string(&p, rt->app);
if (rt->is_input) {
- snprintf(ver, sizeof(ver), "%s %d,%d,%d,%d", RTMP_CLIENT_PLATFORM, RTMP_CLIENT_VER1,
- RTMP_CLIENT_VER2, RTMP_CLIENT_VER3, RTMP_CLIENT_VER4);
+ snprintf(ver, sizeof(ver), "%s %d,%d,%d,%d", RTMP_CLIENT_PLATFORM, RTMP_CLIENT_VER1,
+ RTMP_CLIENT_VER2, RTMP_CLIENT_VER3, RTMP_CLIENT_VER4);
} else {
snprintf(ver, sizeof(ver), "FMLE/3.0 (compatible; %s)", LIBAVFORMAT_IDENT);
ff_amf_write_field_name(&p, "type");
ff_amf_write_field_name(&p, "tcUrl");
ff_amf_write_string(&p, tcurl);
if (rt->is_input) {
- ff_amf_write_field_name(&p, "fpad");
- ff_amf_write_bool(&p, 0);
- ff_amf_write_field_name(&p, "capabilities");
- ff_amf_write_number(&p, 15.0);
- ff_amf_write_field_name(&p, "audioCodecs");
- ff_amf_write_number(&p, 1639.0);
- ff_amf_write_field_name(&p, "videoCodecs");
- ff_amf_write_number(&p, 252.0);
- ff_amf_write_field_name(&p, "videoFunction");
- ff_amf_write_number(&p, 1.0);
+ ff_amf_write_field_name(&p, "fpad");
+ ff_amf_write_bool(&p, 0);
+ ff_amf_write_field_name(&p, "capabilities");
+ ff_amf_write_number(&p, 15.0);
+ ff_amf_write_field_name(&p, "audioCodecs");
+ ff_amf_write_number(&p, 1639.0);
+ ff_amf_write_field_name(&p, "videoCodecs");
+ ff_amf_write_number(&p, 252.0);
+ ff_amf_write_field_name(&p, "videoFunction");
+ ff_amf_write_number(&p, 1.0);
}
ff_amf_write_object_end(&p);
pkt.data_size = p - pkt.data;
ff_rtmp_packet_write(rt->stream, &pkt, rt->chunk_size, rt->prev_pkt[1]);
+ ff_rtmp_packet_destroy(&pkt);
}
/**
- * Generates 'releaseStream' call and sends it to the server. It should make
+ * Generate 'releaseStream' call and send it to the server. It should make
* the server release some channel for media streams.
*/
static void gen_release_stream(URLContext *s, RTMPContext *rt)
}
/**
- * Generates 'FCPublish' call and sends it to the server. It should make
+ * Generate 'FCPublish' call and send it to the server. It should make
* the server preapare for receiving media streams.
*/
static void gen_fcpublish_stream(URLContext *s, RTMPContext *rt)
}
/**
- * Generates 'FCUnpublish' call and sends it to the server. It should make
+ * Generate 'FCUnpublish' call and send it to the server. It should make
* the server destroy stream.
*/
static void gen_fcunpublish_stream(URLContext *s, RTMPContext *rt)
}
/**
- * Generates 'createStream' call and sends it to the server. It should make
+ * Generate 'createStream' call and send it to the server. It should make
* the server allocate some channel for media streams.
*/
static void gen_create_stream(URLContext *s, RTMPContext *rt)
/**
- * Generates 'deleteStream' call and sends it to the server. It should make
+ * Generate 'deleteStream' call and send it to the server. It should make
* the server remove some channel for media streams.
*/
static void gen_delete_stream(URLContext *s, RTMPContext *rt)
}
/**
- * Generates 'play' call and sends it to the server, then pings the server
+ * Generate 'play' call and send it to the server, then ping the server
* to start actual playing.
*/
static void gen_play(URLContext *s, RTMPContext *rt)
}
/**
- * Generates 'publish' call and sends it to the server.
+ * Generate 'publish' call and send it to the server.
*/
static void gen_publish(URLContext *s, RTMPContext *rt)
{
}
/**
- * Generates ping reply and sends it to the server.
+ * Generate ping reply and send it to the server.
*/
static void gen_pong(URLContext *s, RTMPContext *rt, RTMPPacket *ppkt)
{
ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL, RTMP_PT_PING, ppkt->timestamp + 1, 6);
p = pkt.data;
bytestream_put_be16(&p, 7);
- bytestream_put_be32(&p, AV_RB32(ppkt->data+2) + 1);
+ bytestream_put_be32(&p, AV_RB32(ppkt->data+2));
+ ff_rtmp_packet_write(rt->stream, &pkt, rt->chunk_size, rt->prev_pkt[1]);
+ ff_rtmp_packet_destroy(&pkt);
+}
+
+/**
+ * Generate report on bytes read so far and send it to the server.
+ */
+static void gen_bytes_read(URLContext *s, RTMPContext *rt, uint32_t ts)
+{
+ RTMPPacket pkt;
+ uint8_t *p;
+
+ ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL, RTMP_PT_BYTES_READ, ts, 4);
+ p = pkt.data;
+ bytestream_put_be32(&p, rt->bytes_read);
ff_rtmp_packet_write(rt->stream, &pkt, rt->chunk_size, rt->prev_pkt[1]);
ff_rtmp_packet_destroy(&pkt);
}
#define HMAC_OPAD_VAL 0x5C
/**
- * Calculates HMAC-SHA2 digest for RTMP handshake packets.
+ * Calculate HMAC-SHA2 digest for RTMP handshake packets.
*
* @param src input buffer
* @param len input buffer length (should be 1536)
}
/**
- * Puts HMAC-SHA2 digest of packet data (except for the bytes where this digest
+ * Put HMAC-SHA2 digest of packet data (except for the bytes where this digest
* will be stored) into that packet.
*
* @param buf handshake data (1536 bytes)
}
/**
- * Verifies that the received server response has the expected digest value.
+ * Verify that the received server response has the expected digest value.
*
* @param buf handshake data received from the server (1536 bytes)
* @param off position to search digest offset from
}
/**
- * Performs handshake with the server by means of exchanging pseudorandom data
+ * Perform handshake with the server by means of exchanging pseudorandom data
* signed with HMAC-SHA2 digest.
*
* @return 0 if handshake succeeds, negative value otherwise
av_log(LOG_CONTEXT, AV_LOG_DEBUG, "Server version %d.%d.%d.%d\n",
serverdata[5], serverdata[6], serverdata[7], serverdata[8]);
- if (rt->is_input) {
- server_pos = rtmp_validate_digest(serverdata + 1, 772);
- if (!server_pos) {
- server_pos = rtmp_validate_digest(serverdata + 1, 8);
+ if (rt->is_input && serverdata[5] >= 3) {
+ server_pos = rtmp_validate_digest(serverdata + 1, 772);
if (!server_pos) {
- av_log(LOG_CONTEXT, AV_LOG_ERROR, "Server response validating failed\n");
- return -1;
+ server_pos = rtmp_validate_digest(serverdata + 1, 8);
+ if (!server_pos) {
+ av_log(LOG_CONTEXT, AV_LOG_ERROR, "Server response validating failed\n");
+ return -1;
+ }
}
- }
- rtmp_calc_digest(tosend + 1 + client_pos, 32, 0,
- rtmp_server_key, sizeof(rtmp_server_key),
- digest);
- rtmp_calc_digest(clientdata, RTMP_HANDSHAKE_PACKET_SIZE-32, 0,
- digest, 32,
- digest);
- if (memcmp(digest, clientdata + RTMP_HANDSHAKE_PACKET_SIZE - 32, 32)) {
- av_log(LOG_CONTEXT, AV_LOG_ERROR, "Signature mismatch\n");
- return -1;
- }
-
- for (i = 0; i < RTMP_HANDSHAKE_PACKET_SIZE; i++)
- tosend[i] = av_lfg_get(&rnd) >> 24;
- rtmp_calc_digest(serverdata + 1 + server_pos, 32, 0,
- rtmp_player_key, sizeof(rtmp_player_key),
- digest);
- rtmp_calc_digest(tosend, RTMP_HANDSHAKE_PACKET_SIZE - 32, 0,
- digest, 32,
- tosend + RTMP_HANDSHAKE_PACKET_SIZE - 32);
+ rtmp_calc_digest(tosend + 1 + client_pos, 32, 0,
+ rtmp_server_key, sizeof(rtmp_server_key),
+ digest);
+ rtmp_calc_digest(clientdata, RTMP_HANDSHAKE_PACKET_SIZE-32, 0,
+ digest, 32,
+ digest);
+ if (memcmp(digest, clientdata + RTMP_HANDSHAKE_PACKET_SIZE - 32, 32)) {
+ av_log(LOG_CONTEXT, AV_LOG_ERROR, "Signature mismatch\n");
+ return -1;
+ }
- // write reply back to the server
- url_write(rt->stream, tosend, RTMP_HANDSHAKE_PACKET_SIZE);
+ for (i = 0; i < RTMP_HANDSHAKE_PACKET_SIZE; i++)
+ tosend[i] = av_lfg_get(&rnd) >> 24;
+ rtmp_calc_digest(serverdata + 1 + server_pos, 32, 0,
+ rtmp_player_key, sizeof(rtmp_player_key),
+ digest);
+ rtmp_calc_digest(tosend, RTMP_HANDSHAKE_PACKET_SIZE - 32, 0,
+ digest, 32,
+ tosend + RTMP_HANDSHAKE_PACKET_SIZE - 32);
+
+ // write reply back to the server
+ url_write(rt->stream, tosend, RTMP_HANDSHAKE_PACKET_SIZE);
} else {
url_write(rt->stream, serverdata+1, RTMP_HANDSHAKE_PACKET_SIZE);
}
}
/**
- * Parses received packet and may perform some action depending on
+ * Parse received packet and possibly perform some action depending on
* the packet contents.
* @return 0 for no errors, negative values for serious errors which prevent
* further communications, positive values for uncritical errors
int i, t;
const uint8_t *data_end = pkt->data + pkt->data_size;
+#ifdef DEBUG
+ ff_rtmp_packet_dump(LOG_CONTEXT, pkt);
+#endif
+
switch (pkt->type) {
case RTMP_PT_CHUNK_SIZE:
if (pkt->data_size != 4) {
if (t == 6)
gen_pong(s, rt, pkt);
break;
+ case RTMP_PT_CLIENT_BW:
+ if (pkt->data_size < 4) {
+ av_log(LOG_CONTEXT, AV_LOG_ERROR,
+ "Client bandwidth report packet is less than 4 bytes long (%d)\n",
+ pkt->data_size);
+ return -1;
+ }
+ av_log(LOG_CONTEXT, AV_LOG_DEBUG, "Client bandwidth = %d\n", AV_RB32(pkt->data));
+ rt->client_report_size = AV_RB32(pkt->data) >> 1;
+ break;
case RTMP_PT_INVOKE:
//TODO: check for the messages sent for wrong state?
if (!memcmp(pkt->data, "\002\000\006_error", 9)) {
if (pkt_id == 4)
rt->state = STATE_CONNECTING;
}
- if(rt->state != STATE_CONNECTING)
+ if (rt->state != STATE_CONNECTING)
break;
case STATE_CONNECTING:
//extract a number from the result
rt->main_channel_id = (int) av_int2dbl(AV_RB64(pkt->data + 21));
}
if (rt->is_input) {
- gen_play(s, rt);
+ gen_play(s, rt);
} else {
gen_publish(s, rt);
}
t = ff_amf_get_field_value(ptr, data_end,
"code", tmpstr, sizeof(tmpstr));
if (!t && !strcmp(tmpstr, "NetStream.Play.Start")) rt->state = STATE_PLAYING;
+ if (!t && !strcmp(tmpstr, "NetStream.Play.Stop")) rt->state = STATE_STOPPED;
+ if (!t && !strcmp(tmpstr, "NetStream.Play.UnpublishNotify")) rt->state = STATE_STOPPED;
if (!t && !strcmp(tmpstr, "NetStream.Publish.Start")) rt->state = STATE_PUBLISHING;
}
break;
}
/**
- * Interacts with the server by receiving and sending RTMP packets until
+ * Interact with the server by receiving and sending RTMP packets until
* there is some significant data (media data or expected status notification).
*
* @param s reading context
{
RTMPContext *rt = s->priv_data;
int ret;
+ uint8_t *p;
+ const uint8_t *next;
+ uint32_t data_size;
+ uint32_t ts, cts, pts=0;
+
+ if (rt->state == STATE_STOPPED)
+ return AVERROR_EOF;
- for(;;) {
+ for (;;) {
RTMPPacket rpkt;
if ((ret = ff_rtmp_packet_read(rt->stream, &rpkt,
- rt->chunk_size, rt->prev_pkt[0])) != 0) {
- if (ret > 0) {
+ rt->chunk_size, rt->prev_pkt[0])) <= 0) {
+ if (ret == 0) {
return AVERROR(EAGAIN);
} else {
return AVERROR(EIO);
}
}
+ rt->bytes_read += ret;
+ if (rt->bytes_read > rt->last_bytes_read + rt->client_report_size) {
+ av_log(LOG_CONTEXT, AV_LOG_DEBUG, "Sending bytes read report\n");
+ gen_bytes_read(s, rt, rpkt.timestamp + 1);
+ rt->last_bytes_read = rt->bytes_read;
+ }
ret = rtmp_parse_result(s, rt, &rpkt);
if (ret < 0) {//serious error in current packet
ff_rtmp_packet_destroy(&rpkt);
return -1;
}
+ if (rt->state == STATE_STOPPED) {
+ ff_rtmp_packet_destroy(&rpkt);
+ return AVERROR_EOF;
+ }
if (for_header && (rt->state == STATE_PLAYING || rt->state == STATE_PUBLISHING)) {
ff_rtmp_packet_destroy(&rpkt);
return 0;
}
if (rpkt.type == RTMP_PT_VIDEO || rpkt.type == RTMP_PT_AUDIO ||
(rpkt.type == RTMP_PT_NOTIFY && !memcmp("\002\000\012onMetaData", rpkt.data, 13))) {
- uint8_t *p;
- uint32_t ts = rpkt.timestamp;
+ ts = rpkt.timestamp;
// generate packet header and put data into buffer for FLV demuxer
rt->flv_off = 0;
rt->flv_off = 0;
rt->flv_size = rpkt.data_size;
rt->flv_data = av_realloc(rt->flv_data, rt->flv_size);
+ /* rewrite timestamps */
+ next = rpkt.data;
+ ts = rpkt.timestamp;
+ while (next - rpkt.data < rpkt.data_size - 11) {
+ next++;
+ data_size = bytestream_get_be24(&next);
+ p=next;
+ cts = bytestream_get_be24(&next);
+ cts |= bytestream_get_byte(&next) << 24;
+ if (pts==0)
+ pts=cts;
+ ts += cts - pts;
+ pts = cts;
+ bytestream_put_be24(&p, ts);
+ bytestream_put_byte(&p, ts >> 24);
+ next += data_size + 3 + 4;
+ }
memcpy(rt->flv_data, rpkt.data, rpkt.data_size);
ff_rtmp_packet_destroy(&rpkt);
return 0;
{
RTMPContext *rt = h->priv_data;
- if(!rt->is_input) {
+ if (!rt->is_input) {
rt->flv_data = NULL;
if (rt->out_pkt.data_size)
ff_rtmp_packet_destroy(&rt->out_pkt);
- gen_fcunpublish_stream(h, rt);
+ if (rt->state > STATE_FCPUBLISH)
+ gen_fcunpublish_stream(h, rt);
}
- gen_delete_stream(h, rt);
+ if (rt->state > STATE_HANDSHAKED)
+ gen_delete_stream(h, rt);
av_freep(&rt->flv_data);
url_close(rt->stream);
}
/**
- * Opens RTMP connection and verifies that the stream can be played.
+ * Open RTMP connection and verify that the stream can be played.
*
* URL syntax: rtmp://server[:port][/app][/playpath]
* where 'app' is first one or two directories in the path
s->priv_data = rt;
rt->is_input = !(flags & URL_WRONLY);
- url_split(proto, sizeof(proto), NULL, 0, hostname, sizeof(hostname), &port,
- path, sizeof(path), s->filename);
+ av_url_split(proto, sizeof(proto), NULL, 0, hostname, sizeof(hostname), &port,
+ path, sizeof(path), s->filename);
if (port < 0)
port = RTMP_DEFAULT_PORT;
- snprintf(buf, sizeof(buf), "tcp://%s:%d", hostname, port);
+ ff_url_join(buf, sizeof(buf), "tcp", NULL, hostname, port, NULL);
if (url_open(&rt->stream, buf, URL_RDWR) < 0) {
av_log(LOG_CONTEXT, AV_LOG_ERROR, "Cannot open connection %s\n", buf);
goto fail;
}
- rt->state = STATE_START;
- if (rtmp_handshake(s, rt))
- return -1;
+ rt->state = STATE_START;
+ if (rtmp_handshake(s, rt))
+ return -1;
- rt->chunk_size = 128;
- rt->state = STATE_HANDSHAKED;
- //extract "app" part from path
- if (!strncmp(path, "/ondemand/", 10)) {
- fname = path + 10;
- memcpy(rt->app, "ondemand", 9);
+ rt->chunk_size = 128;
+ rt->state = STATE_HANDSHAKED;
+ //extract "app" part from path
+ if (!strncmp(path, "/ondemand/", 10)) {
+ fname = path + 10;
+ memcpy(rt->app, "ondemand", 9);
+ } else {
+ char *p = strchr(path + 1, '/');
+ if (!p) {
+ fname = path + 1;
+ rt->app[0] = '\0';
} else {
- char *p = strchr(path + 1, '/');
- if (!p) {
- fname = path + 1;
- rt->app[0] = '\0';
+ char *c = strchr(p + 1, ':');
+ fname = strchr(p + 1, '/');
+ if (!fname || c < fname) {
+ fname = p + 1;
+ av_strlcpy(rt->app, path + 1, p - path);
} else {
- char *c = strchr(p + 1, ':');
- fname = strchr(p + 1, '/');
- if (!fname || c < fname) {
- fname = p + 1;
- av_strlcpy(rt->app, path + 1, p - path);
- } else {
- fname++;
- av_strlcpy(rt->app, path + 1, fname - path - 1);
- }
+ fname++;
+ av_strlcpy(rt->app, path + 1, fname - path - 1);
}
}
- if (!strchr(fname, ':') &&
- (!strcmp(fname + strlen(fname) - 4, ".f4v") ||
- !strcmp(fname + strlen(fname) - 4, ".mp4"))) {
- memcpy(rt->playpath, "mp4:", 5);
- } else {
- rt->playpath[0] = 0;
- }
- strncat(rt->playpath, fname, sizeof(rt->playpath) - 5);
+ }
+ if (!strchr(fname, ':') &&
+ (!strcmp(fname + strlen(fname) - 4, ".f4v") ||
+ !strcmp(fname + strlen(fname) - 4, ".mp4"))) {
+ memcpy(rt->playpath, "mp4:", 5);
+ } else {
+ rt->playpath[0] = 0;
+ }
+ strncat(rt->playpath, fname, sizeof(rt->playpath) - 5);
- av_log(LOG_CONTEXT, AV_LOG_DEBUG, "Proto = %s, path = %s, app = %s, fname = %s\n",
- proto, path, rt->app, rt->playpath);
- gen_connect(s, rt, proto, hostname, port);
+ rt->client_report_size = 1048576;
+ rt->bytes_read = 0;
+ rt->last_bytes_read = 0;
- do {
- ret = get_packet(s, 1);
- } while (ret == EAGAIN);
- if (ret < 0)
- goto fail;
+ av_log(LOG_CONTEXT, AV_LOG_DEBUG, "Proto = %s, path = %s, app = %s, fname = %s\n",
+ proto, path, rt->app, rt->playpath);
+ gen_connect(s, rt, proto, hostname, port);
+
+ do {
+ ret = get_packet(s, 1);
+ } while (ret == EAGAIN);
+ if (ret < 0)
+ goto fail;
if (rt->is_input) {
// generate FLV header for demuxer
buf += data_left;
size -= data_left;
rt->flv_off = rt->flv_size;
+ return data_left;
}
if ((ret = get_packet(s, 0)) < 0)
return ret;
return orig_size;
}
-static int rtmp_write(URLContext *h, uint8_t *buf, int size)
+static int rtmp_write(URLContext *h, const uint8_t *buf, int size)
{
RTMPContext *rt = h->priv_data;
int size_temp = size;