diff options
author | Ronald S. Bultje <rsbultje@gmail.com> | 2010-07-27 02:21:14 +0400 |
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committer | Ronald S. Bultje <rsbultje@gmail.com> | 2010-07-27 02:21:14 +0400 |
commit | 540ab68c645aff0edffed3c0d3480ffd473f41d8 (patch) | |
tree | d7bdbbec4656669d6bbbbf3b10e6570ccf46180c /libavformat | |
parent | ab4d031889adfa15e9dbeb89ea4a601fcab3118d (diff) |
Use av_log(.., AV_LOG_ERROR) instead of dprintf() for logging errors. This
should help in making mmst a little more userfriendly, or at least debuggable.
Also use helpful error return values instead of -1.
Originally committed as revision 24515 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavformat')
-rw-r--r-- | libavformat/mmst.c | 97 |
1 files changed, 64 insertions, 33 deletions
diff --git a/libavformat/mmst.c b/libavformat/mmst.c index f0f4217e1e..84a06fb41e 100644 --- a/libavformat/mmst.c +++ b/libavformat/mmst.c @@ -170,8 +170,11 @@ static int send_command_packet(MMSContext *mms) // write it out. write_result= url_write(mms->mms_hd, mms->out_buffer, exact_length); if(write_result != exact_length) { - dprintf(NULL, "url_write returned: %d != %d\n", - write_result, exact_length); + av_log(NULL, AV_LOG_ERROR, + "Failed to write data of length %d: %d (%s)\n", + exact_length, write_result, + write_result < 0 ? strerror(write_result) : + "The server closed the connection"); return AVERROR_IO; } @@ -277,26 +280,37 @@ static MMSSCPacketType get_tcp_server_response(MMSContext *mms) // read the rest of the packet. if (length_remaining < 0 || length_remaining > sizeof(mms->in_buffer) - 12) { - dprintf(NULL, "Incoming message len %d exceeds buffer len %d\n", - length_remaining, sizeof(mms->in_buffer) - 12); - return -1; + av_log(NULL, AV_LOG_ERROR, + "Incoming packet length %d exceeds bufsize %zu\n", + length_remaining, sizeof(mms->in_buffer) - 12); + return AVERROR_INVALIDDATA; } read_result = url_read_complete(mms->mms_hd, mms->in_buffer + 12, length_remaining) ; if (read_result == length_remaining) { packet_type= AV_RL16(mms->in_buffer+36); } else { - dprintf(NULL, "read for packet type failed%d!\n", read_result); - return -1; + av_log(NULL, AV_LOG_ERROR, + "Reading pkt data (length=%d) failed: %d (%s)\n", + length_remaining, read_result, + read_result < 0 ? strerror(read_result) : + "The server closed the connection"); + return read_result < 0 ? read_result : AVERROR_IO; } hr = AV_RL32(mms->in_buffer + 40); if (hr) { - dprintf(NULL, "The server side send back error code:0x%x\n", hr); - return -1; + av_log(NULL, AV_LOG_ERROR, + "Server sent an error status code: 0x%08x\n", + hr); + return AVERROR_UNKNOWN; } } else { - dprintf(NULL, "read for length remaining failed%d!\n", read_result); - return -1; + av_log(NULL, AV_LOG_ERROR, + "Reading command packet length failed: %d (%s)\n", + read_result, + read_result < 0 ? strerror(read_result) : + "The server closed the connection"); + return read_result < 0 ? read_result : AVERROR_IO; } } else { int length_remaining; @@ -313,17 +327,21 @@ static MMSSCPacketType get_tcp_server_response(MMSContext *mms) if (length_remaining < 0 || length_remaining > sizeof(mms->in_buffer) - 8) { - dprintf(NULL, "Incoming data len %d exceeds buffer len %d\n", - length_remaining, sizeof(mms->in_buffer)); - return -1; + av_log(NULL, AV_LOG_ERROR, + "Data length %d is invalid or too large (max=%zu)\n", + length_remaining, sizeof(mms->in_buffer)); + return AVERROR_INVALIDDATA; } mms->remaining_in_len = length_remaining; mms->read_in_ptr = mms->in_buffer; read_result= url_read_complete(mms->mms_hd, mms->in_buffer, length_remaining); if(read_result != length_remaining) { - dprintf(NULL, "read_bytes result: %d asking for %d\n", - read_result, length_remaining); - return -1; + av_log(NULL, AV_LOG_ERROR, + "Failed to read packet data of size %d: %d (%s)\n", + length_remaining, read_result, + read_result < 0 ? strerror(read_result) : + "The server closed the connection"); + return read_result < 0 ? read_result : AVERROR_IO; } else { // if we successfully read everything. if(packet_id_type == mms->header_packet_id) { @@ -367,10 +385,13 @@ static MMSSCPacketType get_tcp_server_response(MMSContext *mms) return packet_type; } else { if(read_result<0) { - dprintf(NULL, "Read error (or cancelled) returned %d!\n", read_result); + av_log(NULL, AV_LOG_ERROR, + "Error reading packet header: %d (%s)\n", + read_result, strerror(read_result)); packet_type = SC_PKT_CANCEL; } else { - dprintf(NULL, "Read result of zero?!\n"); + av_log(NULL, AV_LOG_ERROR, + "The server closed the connection\n"); packet_type = SC_PKT_NO_DATA; } return packet_type; @@ -392,8 +413,10 @@ static int mms_safe_send_recv(MMSContext *mms, } if ((type = get_tcp_server_response(mms)) != expect_type) { - dprintf(NULL,"Unexpected packet type %d with type %d\n", type, expect_type); - return -1; + av_log(NULL, AV_LOG_ERROR, + "Corrupt stream (unexpected packet type 0x%x, expected 0x%x)\n", + type, expect_type); + return AVERROR_INVALIDDATA; } else { return 0; } @@ -446,8 +469,12 @@ static int asf_header_parser(MMSContext *mms) mms->stream_num = 0; if (mms->asf_header_size < sizeof(ff_asf_guid) * 2 + 22 || - memcmp(p, ff_asf_header, sizeof(ff_asf_guid))) - return -1; + memcmp(p, ff_asf_header, sizeof(ff_asf_guid))) { + av_log(NULL, AV_LOG_ERROR, + "Corrupt stream (invalid ASF header, size=%d)\n", + mms->asf_header_size); + return AVERROR_INVALIDDATA; + } end = mms->asf_header + mms->asf_header_size; @@ -455,17 +482,20 @@ static int asf_header_parser(MMSContext *mms) while(end - p >= sizeof(ff_asf_guid) + 8) { uint64_t chunksize = AV_RL64(p + sizeof(ff_asf_guid)); if (!chunksize || chunksize > end - p) { - dprintf(NULL, "chunksize is exceptional value:%"PRId64"!\n", chunksize); - return -1; + av_log(NULL, AV_LOG_ERROR, + "Corrupt stream (header chunksize %"PRId64" is invalid)\n", + chunksize); + return AVERROR_INVALIDDATA; } if (!memcmp(p, ff_asf_file_header, sizeof(ff_asf_guid))) { /* read packet size */ if (end - p > sizeof(ff_asf_guid) * 2 + 68) { mms->asf_packet_len = AV_RL32(p + sizeof(ff_asf_guid) * 2 + 64); if (mms->asf_packet_len <= 0 || mms->asf_packet_len > sizeof(mms->in_buffer)) { - dprintf(NULL,"Too large packet len:%d" - " may overwrite in_buffer when padding", mms->asf_packet_len); - return -1; + av_log(NULL, AV_LOG_ERROR, + "Corrupt stream (too large pkt_len %d)\n", + mms->asf_packet_len); + return AVERROR_INVALIDDATA; } } } else if (!memcmp(p, ff_asf_stream_header, sizeof(ff_asf_guid))) { @@ -479,8 +509,9 @@ static int asf_header_parser(MMSContext *mms) mms->streams[mms->stream_num].id = stream_id; mms->stream_num++; } else { - dprintf(NULL, "Too many streams.\n"); - return -1; + av_log(NULL, AV_LOG_ERROR, + "Corrupt stream (too many A/V streams)\n"); + return AVERROR_INVALIDDATA; } } else if (!memcmp(p, ff_asf_head1_guid, sizeof(ff_asf_guid))) { chunksize = 46; // see references [2] section 3.4. This should be set 46. @@ -546,9 +577,9 @@ static int read_mms_packet(MMSContext *mms, uint8_t *buf, int buf_size) int err = mms_safe_send_recv(mms, NULL, SC_PKT_ASF_MEDIA); if (err == 0) { if(mms->remaining_in_len>mms->asf_packet_len) { - dprintf(NULL, "Incoming packet" - "larger than the asf packet size stated (%d>%d)\n", - mms->remaining_in_len, mms->asf_packet_len); + av_log(NULL, AV_LOG_ERROR, + "Incoming pktlen %d is larger than ASF pktsize %d\n", + mms->remaining_in_len, mms->asf_packet_len); result= AVERROR_IO; } else { // copy the data to the packet buffer. |