uint8_t endbyte;
int endbyte_bits;
uint32_t timestamp;
+ int newformat;
};
static PayloadContext *h263_new_context(void)
AVStream *st, AVPacket *pkt, uint32_t *timestamp,
const uint8_t *buf, int len, int flags)
{
- int f, p, i, sbit, ebit; /* Corresponding to header fields in the RFC */
+ /* Corresponding to header fields in the RFC */
+ int f, p, i, sbit, ebit, src, r;
int header_size;
+ if (data->newformat)
+ return ff_h263_handle_packet(ctx, data, st, pkt, timestamp, buf, len,
+ flags);
+
if (data->buf && data->timestamp != *timestamp) {
/* Dropping old buffered, unfinished data */
uint8_t *p;
/* Mode A */
header_size = 4;
i = buf[1] & 0x10;
+ r = ((buf[1] & 0x01) << 3) | ((buf[2] & 0xe0) >> 5);
} else if (!p) {
/* Mode B */
header_size = 8;
len, header_size);
return AVERROR_INVALIDDATA;
}
+ r = buf[3] & 0x03;
i = buf[4] & 0x80;
} else {
/* Mode C */
len, header_size);
return AVERROR_INVALIDDATA;
}
+ r = buf[3] & 0x03;
i = buf[4] & 0x80;
}
sbit = (buf[0] >> 3) & 0x7;
ebit = buf[0] & 0x7;
+ src = (buf[1] & 0xe0) >> 5;
+ if (!(buf[0] & 0xf8)) { /* Reserved bits in RFC 2429/4629 are zero */
+ if ((src == 0 || src >= 6) && r) {
+ /* Invalid src for this format, and bits that should be zero
+ * according to RFC 2190 aren't zero. */
+ av_log(ctx, AV_LOG_WARNING,
+ "Interpreting H263 RTP data as RFC 2429/4629 even though "
+ "signalled with a static payload type.\n");
+ data->newformat = 1;
+ return ff_h263_handle_packet(ctx, data, st, pkt, timestamp, buf,
+ len, flags);
+ }
+ }
buf += header_size;
len -= header_size;
if (!data->buf) {
/* Check the picture start code, only start buffering a new frame
* if this is correct */
- if (!f && len > 4 && AV_RB32(buf) >> 10 == 0x20) {
+ if (len > 4 && AV_RB32(buf) >> 10 == 0x20) {
int ret = avio_open_dyn_buf(&data->buf);
if (ret < 0)
return ret;
RTPDynamicProtocolHandler ff_h263_rfc2190_dynamic_handler = {
.codec_type = AVMEDIA_TYPE_VIDEO,
- .codec_id = CODEC_ID_H263,
+ .codec_id = AV_CODEC_ID_H263,
.parse_packet = h263_handle_packet,
.alloc = h263_new_context,
.free = h263_free_context,