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x264enc: adaptive x264 header NAL layout handling

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Fixes #615410.
This commit is contained in:
Mark Nauwelaerts 2010-04-16 21:10:58 +02:00
parent aa2a7bdda2
commit d17388afa9
1 changed files with 23 additions and 19 deletions
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42
ext/x264/gstx264enc.c
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@ -716,10 +716,7 @@ gst_x264_enc_header_buf (GstX264Enc * encoder)
#endif
guint8 *buffer, *sps;
gulong buffer_size;
#define SEI_NI 0
#define SPS_NI 1
#define PPS_NI 2
gint sei_ni = 2, sps_ni = 0, pps_ni = 1;
if (G_UNLIKELY (encoder->x264enc == NULL))
return NULL;
@ -733,29 +730,36 @@ gst_x264_enc_header_buf (GstX264Enc * encoder)
return NULL;
}
/* old x264 returns SEI, SPS and PPS, newer one has SEI last */
if (i_nal == 3 && nal[sps_ni].i_type != 7) {
sei_ni = 0;
sps_ni = 1;
pps_ni = 2;
}
/* x264 is expected to return an SEI (some identification info),
* followed by an SPS and PPS */
if (i_nal != 3 || nal[SPS_NI].i_type != 7 || nal[PPS_NI].i_type != 8 ||
nal[SPS_NI].i_payload < 4 || nal[PPS_NI].i_payload < 1) {
* and SPS and PPS */
if (i_nal != 3 || nal[sps_ni].i_type != 7 || nal[pps_ni].i_type != 8 ||
nal[sps_ni].i_payload < 4 || nal[pps_ni].i_payload < 1) {
GST_ELEMENT_ERROR (encoder, STREAM, ENCODE, (NULL),
("Unexpected x264 header."));
return NULL;
}
GST_MEMDUMP ("SEI", nal[SEI_NI].p_payload, nal[SEI_NI].i_payload);
GST_MEMDUMP ("SPS", nal[SPS_NI].p_payload, nal[SPS_NI].i_payload);
GST_MEMDUMP ("PPS", nal[PPS_NI].p_payload, nal[PPS_NI].i_payload);
GST_MEMDUMP ("SEI", nal[sei_ni].p_payload, nal[sei_ni].i_payload);
GST_MEMDUMP ("SPS", nal[sps_ni].p_payload, nal[sps_ni].i_payload);
GST_MEMDUMP ("PPS", nal[pps_ni].p_payload, nal[pps_ni].i_payload);
/* nal payloads with emulation_prevention_three_byte, and some header data */
buffer_size = (nal[SPS_NI].i_payload + nal[PPS_NI].i_payload) * 4 + 100;
buffer_size = (nal[sps_ni].i_payload + nal[pps_ni].i_payload) * 4 + 100;
buffer = g_malloc (buffer_size);
/* old style API: nal's are not encapsulated, and have no sync/size prefix,
* new style API: nal's are encapsulated, and have 4-byte size prefix */
#ifndef X264_ENC_NALS
sps = nal[SPS_NI].p_payload;
sps = nal[sps_ni].p_payload;
#else
sps = nal[SPS_NI].p_payload + 4;
sps = nal[sps_ni].p_payload + 4;
/* skip NAL unit type */
sps++;
#endif
@ -772,10 +776,10 @@ gst_x264_enc_header_buf (GstX264Enc * encoder)
#ifndef X264_ENC_NALS
i_data = buffer_size - i_size - 2;
nal_size = x264_nal_encode (buffer + i_size + 2, &i_data, 0, &nal[SPS_NI]);
nal_size = x264_nal_encode (buffer + i_size + 2, &i_data, 0, &nal[sps_ni]);
#else
nal_size = nal[SPS_NI].i_payload - 4;
memcpy (buffer + i_size + 2, nal[SPS_NI].p_payload + 4, nal_size);
nal_size = nal[sps_ni].i_payload - 4;
memcpy (buffer + i_size + 2, nal[sps_ni].p_payload + 4, nal_size);
#endif
GST_WRITE_UINT16_BE (buffer + i_size, nal_size);
i_size += nal_size + 2;
@ -784,10 +788,10 @@ gst_x264_enc_header_buf (GstX264Enc * encoder)
#ifndef X264_ENC_NALS
i_data = buffer_size - i_size - 2;
nal_size = x264_nal_encode (buffer + i_size + 2, &i_data, 0, &nal[PPS_NI]);
nal_size = x264_nal_encode (buffer + i_size + 2, &i_data, 0, &nal[pps_ni]);
#else
nal_size = nal[PPS_NI].i_payload - 4;
memcpy (buffer + i_size + 2, nal[PPS_NI].p_payload + 4, nal_size);
nal_size = nal[pps_ni].i_payload - 4;
memcpy (buffer + i_size + 2, nal[pps_ni].p_payload + 4, nal_size);
#endif
GST_WRITE_UINT16_BE (buffer + i_size, nal_size);
i_size += nal_size + 2;