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rtp: h264: Move parse_sprop_parameter_sets parsing to a function

This commit is contained in:
Luca Barbato 2015-02-13 23:38:14 +01:00
parent b8df0b71c5
commit a9a0b8d6c1
1 changed files with 55 additions and 45 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

100
libavformat/rtpdec_h264.c
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@ -93,6 +93,60 @@ static void parse_profile_level_id(AVFormatContext *s,
h264_data->level_idc = level_idc;
}
static int parse_sprop_parameter_sets(AVFormatContext *s,
AVCodecContext *codec,
char *value)
{
char base64packet[1024];
uint8_t decoded_packet[1024];
int packet_size;
while (*value) {
char *dst = base64packet;
while (*value && *value != ','
&& (dst - base64packet) < sizeof(base64packet) - 1) {
*dst++ = *value++;
}
*dst++ = '\0';
if (*value == ',')
value++;
packet_size = av_base64_decode(decoded_packet, base64packet,
sizeof(decoded_packet));
if (packet_size > 0) {
uint8_t *dest = av_malloc(packet_size + sizeof(start_sequence) +
codec->extradata_size +
FF_INPUT_BUFFER_PADDING_SIZE);
if (!dest) {
av_log(s, AV_LOG_ERROR,
"Unable to allocate memory for extradata!\n");
return AVERROR(ENOMEM);
}
if (codec->extradata_size) {
memcpy(dest, codec->extradata, codec->extradata_size);
av_free(codec->extradata);
}
memcpy(dest + codec->extradata_size, start_sequence,
sizeof(start_sequence));
memcpy(dest + codec->extradata_size + sizeof(start_sequence),
decoded_packet, packet_size);
memset(dest + codec->extradata_size + sizeof(start_sequence) +
packet_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
codec->extradata = dest;
codec->extradata_size += sizeof(start_sequence) + packet_size;
}
}
av_log(s, AV_LOG_DEBUG, "Extradata set to %p (size: %d)\n",
codec->extradata, codec->extradata_size);
return 0;
}
static int sdp_parse_fmtp_config_h264(AVFormatContext *s,
AVStream *stream,
PayloadContext *h264_data,
@ -121,51 +175,7 @@ static int sdp_parse_fmtp_config_h264(AVFormatContext *s,
} else if (!strcmp(attr, "sprop-parameter-sets")) {
codec->extradata_size = 0;
av_freep(&codec->extradata);
while (*value) {
char base64packet[1024];
uint8_t decoded_packet[1024];
int packet_size;
char *dst = base64packet;
while (*value && *value != ','
&& (dst - base64packet) < sizeof(base64packet) - 1) {
*dst++ = *value++;
}
*dst++ = '\0';
if (*value == ',')
value++;
packet_size = av_base64_decode(decoded_packet, base64packet,
sizeof(decoded_packet));
if (packet_size > 0) {
uint8_t *dest = av_malloc(packet_size + sizeof(start_sequence) +
codec->extradata_size +
FF_INPUT_BUFFER_PADDING_SIZE);
if (!dest) {
av_log(s, AV_LOG_ERROR,
"Unable to allocate memory for extradata!\n");
return AVERROR(ENOMEM);
}
if (codec->extradata_size) {
memcpy(dest, codec->extradata, codec->extradata_size);
av_free(codec->extradata);
}
memcpy(dest + codec->extradata_size, start_sequence,
sizeof(start_sequence));
memcpy(dest + codec->extradata_size + sizeof(start_sequence),
decoded_packet, packet_size);
memset(dest + codec->extradata_size + sizeof(start_sequence) +
packet_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
codec->extradata = dest;
codec->extradata_size += sizeof(start_sequence) + packet_size;
}
}
av_log(s, AV_LOG_DEBUG, "Extradata set to %p (size: %d)!\n",
codec->extradata, codec->extradata_size);
return parse_sprop_parameter_sets(s, codec, value);
}
return 0;
}