int nb_au_headers;
int au_headers_length_bytes;
int cur_au_index;
+
+ uint8_t buf[RTP_MAX_PACKET_LENGTH];
+ int buf_pos, buf_size;
};
typedef struct {
return 0;
}
-static int rtp_parse_mp4_au(PayloadContext *data, const uint8_t *buf)
+static int rtp_parse_mp4_au(PayloadContext *data, const uint8_t *buf, int len)
{
int au_headers_length, au_header_size, i;
GetBitContext getbitcontext;
+ if (len < 2)
+ return AVERROR_INVALIDDATA;
+
/* decode the first 2 bytes where the AUHeader sections are stored
length in bits */
au_headers_length = AV_RB16(buf);
/* skip AU headers length section (2 bytes) */
buf += 2;
+ len -= 2;
+
+ if (len < data->au_headers_length_bytes)
+ return AVERROR_INVALIDDATA;
init_get_bits(&getbitcontext, buf, data->au_headers_length_bytes * 8);
if (!data->au_headers || data->au_headers_allocated < data->nb_au_headers) {
av_free(data->au_headers);
data->au_headers = av_malloc(sizeof(struct AUHeaders) * data->nb_au_headers);
+ if (!data->au_headers)
+ return AVERROR(ENOMEM);
data->au_headers_allocated = data->nb_au_headers;
}
- /* XXX: We handle multiple AU Section as only one (need to fix this for interleaving)
- In my test, the FAAD decoder does not behave correctly when sending each AU one by one
- but does when sending the whole as one big packet... */
- data->au_headers[0].size = 0;
- data->au_headers[0].index = 0;
for (i = 0; i < data->nb_au_headers; ++i) {
- data->au_headers[0].size += get_bits_long(&getbitcontext, data->sizelength);
- data->au_headers[0].index = get_bits_long(&getbitcontext, data->indexlength);
+ data->au_headers[i].size = get_bits_long(&getbitcontext, data->sizelength);
+ data->au_headers[i].index = get_bits_long(&getbitcontext, data->indexlength);
}
- data->nb_au_headers = 1;
-
return 0;
}
const uint8_t *buf, int len, uint16_t seq,
int flags)
{
- if (rtp_parse_mp4_au(data, buf))
+ int ret;
+
+ if (!buf) {
+ if (data->cur_au_index > data->nb_au_headers)
+ return AVERROR_INVALIDDATA;
+ if (data->buf_size - data->buf_pos < data->au_headers[data->cur_au_index].size)
+ return AVERROR_INVALIDDATA;
+ if ((ret = av_new_packet(pkt, data->au_headers[data->cur_au_index].size)) < 0)
+ return ret;
+ memcpy(pkt->data, &data->buf[data->buf_pos], data->au_headers[data->cur_au_index].size);
+ data->buf_pos += data->au_headers[data->cur_au_index].size;
+ pkt->stream_index = st->index;
+ data->cur_au_index++;
+ return data->cur_au_index < data->nb_au_headers;
+ }
+
+ if (rtp_parse_mp4_au(data, buf, len))
return -1;
buf += data->au_headers_length_bytes + 2;
len -= data->au_headers_length_bytes + 2;
- /* XXX: Fixme we only handle the case where rtp_parse_mp4_au define
- one au_header */
- av_new_packet(pkt, data->au_headers[0].size);
+ if (len < data->au_headers[0].size)
+ return AVERROR_INVALIDDATA;
+ if ((ret = av_new_packet(pkt, data->au_headers[0].size)) < 0)
+ return ret;
memcpy(pkt->data, buf, data->au_headers[0].size);
-
+ len -= data->au_headers[0].size;
+ buf += data->au_headers[0].size;
pkt->stream_index = st->index;
+
+ if (len > 0 && data->nb_au_headers > 1) {
+ data->buf_size = FFMIN(len, sizeof(data->buf));
+ memcpy(data->buf, buf, data->buf_size);
+ data->cur_au_index = 1;
+ data->buf_pos = 0;
+ return 1;
+ }
+
return 0;
}
return 0;
}
+static int init_video(AVFormatContext *s, int st_index, PayloadContext *data)
+{
+ if (st_index < 0)
+ return 0;
+ s->streams[st_index]->need_parsing = AVSTREAM_PARSE_FULL;
+ return 0;
+}
+
RTPDynamicProtocolHandler ff_mp4v_es_dynamic_handler = {
.enc_name = "MP4V-ES",
.codec_type = AVMEDIA_TYPE_VIDEO,
.codec_id = AV_CODEC_ID_MPEG4,
+ .init = init_video,
.parse_sdp_a_line = parse_sdp_line,
};