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rtpdec_hevc: Share the implementation of fragmented packets with h264

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Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö 2015-02-23 23:28:34 +02:00
parent f3449062a8
commit 3567b91e49
3 changed files with 29 additions and 35 deletions
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3
libavformat/rtpdec_formats.h
View File

@ -42,6 +42,9 @@ int ff_h264_handle_aggregated_packet(AVFormatContext *ctx, AVPacket *pkt,
const uint8_t *buf, int len,
int start_skip, int *nal_counters,
int nal_mask);
int ff_h264_handle_frag_packet(AVPacket *pkt, const uint8_t *buf, int len,
int start_bit, const uint8_t *nal_header,
int nal_header_len);
void ff_h264_parse_framesize(AVCodecContext *codec, const char *p);
extern RTPDynamicProtocolHandler ff_ac3_dynamic_handler;

41
libavformat/rtpdec_h264.c
View File

@ -257,12 +257,32 @@ int ff_h264_handle_aggregated_packet(AVFormatContext *ctx, AVPacket *pkt,
return 0;
}
int ff_h264_handle_frag_packet(AVPacket *pkt, const uint8_t *buf, int len,
int start_bit, const uint8_t *nal_header,
int nal_header_len)
{
int ret;
int tot_len = len;
int pos = 0;
if (start_bit)
tot_len += sizeof(start_sequence) + nal_header_len;
if ((ret = av_new_packet(pkt, tot_len)) < 0)
return ret;
if (start_bit) {
memcpy(pkt->data + pos, start_sequence, sizeof(start_sequence));
pos += sizeof(start_sequence);
memcpy(pkt->data + pos, nal_header, nal_header_len);
pos += nal_header_len;
}
memcpy(pkt->data + pos, buf, len);
return 0;
}
static int h264_handle_packet_fu_a(AVFormatContext *ctx, AVPacket *pkt,
const uint8_t *buf, int len,
int *nal_counters, int nal_mask)
{
uint8_t fu_indicator, fu_header, start_bit, nal_type, nal;
int ret;
if (len < 3) {
av_log(ctx, AV_LOG_ERROR, "Too short data for FU-A H264 RTP packet\n");
@ -279,22 +299,9 @@ static int h264_handle_packet_fu_a(AVFormatContext *ctx, AVPacket *pkt,
buf += 2;
len -= 2;
if (start_bit) {
if (nal_counters)
nal_counters[nal_type & nal_mask]++;
/* copy in the start sequence, and the reconstructed nal */
if ((ret = av_new_packet(pkt, sizeof(start_sequence) + sizeof(nal) + len)) < 0)
return ret;
memcpy(pkt->data, start_sequence, sizeof(start_sequence));
pkt->data[sizeof(start_sequence)] = nal;
memcpy(pkt->data + sizeof(start_sequence) + sizeof(nal), buf, len);
} else {
if ((ret = av_new_packet(pkt, len)) < 0)
return ret;
memcpy(pkt->data, buf, len);
}
return 0;
if (start_bit && nal_counters)
nal_counters[nal_type & nal_mask]++;
return ff_h264_handle_frag_packet(pkt, buf, len, start_bit, &nal, 1);
}
// return 0 on packet, no more left, 1 on packet, 1 on partial packet

20
libavformat/rtpdec_hevc.c
View File

@ -331,24 +331,8 @@ static int hevc_handle_packet(AVFormatContext *ctx, PayloadContext *rtp_hevc_ctx
new_nal_header[0] = (rtp_pl[0] & 0x81) | (fu_type << 1);
new_nal_header[1] = rtp_pl[1];
/* start fragment vs. subsequent fragments */
if (first_fragment) {
/* create A/V packet which is big enough */
if ((res = av_new_packet(pkt, sizeof(start_sequence) + sizeof(new_nal_header) + len)) < 0)
return res;
/* A/V packet: copy start sequence */
memcpy(pkt->data, start_sequence, sizeof(start_sequence));
/* A/V packet: copy new NAL header */
memcpy(pkt->data + sizeof(start_sequence), new_nal_header, sizeof(new_nal_header));
/* A/V packet: copy NAL unit data */
memcpy(pkt->data + sizeof(start_sequence) + sizeof(new_nal_header), buf, len);
} else {
/* create A/V packet */
if ((res = av_new_packet(pkt, len)) < 0)
return res;
/* A/V packet: copy NAL unit data */
memcpy(pkt->data, buf, len);
}
res = ff_h264_handle_frag_packet(pkt, buf, len, first_fragment,
new_nal_header, sizeof(new_nal_header));
break;
/* PACI packet */