#include "avformat.h"
#include "internal.h"
#include "avc.h"
+#include "hevc.h"
#include "rtp.h"
#if CONFIG_NETWORK
#include "network.h"
const uint8_t *r;
static const char pset_string[] = "; sprop-parameter-sets=";
static const char profile_string[] = "; profile-level-id=";
- uint8_t *orig_extradata = NULL;
- int orig_extradata_size = 0;
+ uint8_t *extradata = c->extradata;
+ int extradata_size = c->extradata_size;
+ uint8_t *tmpbuf = NULL;
const uint8_t *sps = NULL, *sps_end;
if (c->extradata_size > MAX_EXTRADATA_SIZE) {
return NULL;
}
if (c->extradata[0] == 1) {
- uint8_t *dummy_p;
- int dummy_int;
- AVBitStreamFilterContext *bsfc= av_bitstream_filter_init("h264_mp4toannexb");
-
- if (!bsfc) {
- av_log(c, AV_LOG_ERROR, "Cannot open the h264_mp4toannexb BSF!\n");
-
+ if (ff_avc_write_annexb_extradata(c->extradata, &extradata,
+ &extradata_size))
return NULL;
- }
-
- orig_extradata_size = c->extradata_size;
- orig_extradata = av_mallocz(orig_extradata_size +
- FF_INPUT_BUFFER_PADDING_SIZE);
- if (!orig_extradata) {
- av_bitstream_filter_close(bsfc);
- return NULL;
- }
- memcpy(orig_extradata, c->extradata, orig_extradata_size);
- av_bitstream_filter_filter(bsfc, c, NULL, &dummy_p, &dummy_int, NULL, 0, 0);
- av_bitstream_filter_close(bsfc);
+ tmpbuf = extradata;
}
psets = av_mallocz(MAX_PSET_SIZE);
if (!psets) {
av_log(c, AV_LOG_ERROR, "Cannot allocate memory for the parameter sets.\n");
- av_free(orig_extradata);
+ av_free(tmpbuf);
return NULL;
}
memcpy(psets, pset_string, strlen(pset_string));
p = psets + strlen(pset_string);
- r = ff_avc_find_startcode(c->extradata, c->extradata + c->extradata_size);
- while (r < c->extradata + c->extradata_size) {
+ r = ff_avc_find_startcode(extradata, extradata + extradata_size);
+ while (r < extradata + extradata_size) {
const uint8_t *r1;
uint8_t nal_type;
while (!*(r++));
nal_type = *r & 0x1f;
- r1 = ff_avc_find_startcode(r, c->extradata + c->extradata_size);
+ r1 = ff_avc_find_startcode(r, extradata + extradata_size);
if (nal_type != 7 && nal_type != 8) { /* Only output SPS and PPS */
r = r1;
continue;
if (!av_base64_encode(p, MAX_PSET_SIZE - (p - psets), r, r1 - r)) {
av_log(c, AV_LOG_ERROR, "Cannot Base64-encode %"PTRDIFF_SPECIFIER" %"PTRDIFF_SPECIFIER"!\n", MAX_PSET_SIZE - (p - psets), r1 - r);
av_free(psets);
+ av_free(tmpbuf);
return NULL;
}
ff_data_to_hex(p, sps + 1, 3, 0);
p[6] = '\0';
}
- if (orig_extradata) {
- av_free(c->extradata);
- c->extradata = orig_extradata;
- c->extradata_size = orig_extradata_size;
+ av_free(tmpbuf);
+
+ return psets;
+}
+
+static char *extradata2psets_hevc(AVCodecContext *c)
+{
+ char *psets;
+ uint8_t *extradata = c->extradata;
+ int extradata_size = c->extradata_size;
+ uint8_t *tmpbuf = NULL;
+ int ps_pos[3] = { 0 };
+ static const char * const ps_names[3] = { "vps", "sps", "pps" };
+ int num_arrays, num_nalus;
+ int pos, i, j;
+
+ // Convert to hvcc format. Since we need to group multiple NALUs of
+ // the same type, and we might need to convert from one format to the
+ // other anyway, we get away with a little less work by using the hvcc
+ // format.
+ if (c->extradata[0] != 1) {
+ AVIOContext *pb;
+ if (avio_open_dyn_buf(&pb) < 0)
+ return NULL;
+ if (ff_isom_write_hvcc(pb, c->extradata, c->extradata_size, 0) < 0) {
+ avio_close_dyn_buf(pb, &tmpbuf);
+ goto err;
+ }
+ extradata_size = avio_close_dyn_buf(pb, &extradata);
+ tmpbuf = extradata;
+ }
+
+ if (extradata_size < 23)
+ goto err;
+
+ num_arrays = extradata[22];
+ pos = 23;
+ for (i = 0; i < num_arrays; i++) {
+ int num_nalus, nalu_type;
+ if (pos + 3 > extradata_size)
+ goto err;
+ nalu_type = extradata[pos] & 0x3f;
+ // Not including libavcodec/hevc.h to avoid confusion between
+ // NAL_* with the same name for both H264 and HEVC.
+ if (nalu_type == 32) // VPS
+ ps_pos[0] = pos;
+ else if (nalu_type == 33) // SPS
+ ps_pos[1] = pos;
+ else if (nalu_type == 34) // PPS
+ ps_pos[2] = pos;
+ num_nalus = AV_RB16(&extradata[pos + 1]);
+ pos += 3;
+ for (j = 0; j < num_nalus; j++) {
+ int len;
+ if (pos + 2 > extradata_size)
+ goto err;
+ len = AV_RB16(&extradata[pos]);
+ pos += 2;
+ if (pos + len > extradata_size)
+ goto err;
+ pos += len;
+ }
+ }
+ if (!ps_pos[0] || !ps_pos[1] || !ps_pos[2])
+ goto err;
+
+ psets = av_mallocz(MAX_PSET_SIZE);
+ if (!psets)
+ goto err;
+ psets[0] = '\0';
+
+ for (i = 0; i < 3; i++) {
+ pos = ps_pos[i];
+
+ if (i > 0)
+ av_strlcat(psets, "; ", MAX_PSET_SIZE);
+ av_strlcatf(psets, MAX_PSET_SIZE, "sprop-%s=", ps_names[i]);
+
+ // Skipping boundary checks in the input here; we've already traversed
+ // the whole hvcc structure above without issues
+ num_nalus = AV_RB16(&extradata[pos + 1]);
+ pos += 3;
+ for (j = 0; j < num_nalus; j++) {
+ int len = AV_RB16(&extradata[pos]);
+ int strpos;
+ pos += 2;
+ if (j > 0)
+ av_strlcat(psets, ",", MAX_PSET_SIZE);
+ strpos = strlen(psets);
+ if (!av_base64_encode(psets + strpos, MAX_PSET_SIZE - strpos,
+ &extradata[pos], len)) {
+ av_free(psets);
+ goto err;
+ }
+ pos += len;
+ }
}
+ av_free(tmpbuf);
return psets;
+
+err:
+ av_free(tmpbuf);
+ return NULL;
}
static char *extradata2config(AVCodecContext *c)
payload_type,
payload_type, c->width, c->height);
break;
+ case AV_CODEC_ID_HEVC:
+ if (c->extradata_size)
+ config = extradata2psets_hevc(c);
+ av_strlcatf(buff, size, "a=rtpmap:%d H265/90000\r\n", payload_type);
+ if (config)
+ av_strlcatf(buff, size, "a=fmtp:%d %s\r\n",
+ payload_type, config);
+ break;
case AV_CODEC_ID_MPEG4:
if (c->extradata_size) {
config = extradata2config(c);
}
break;
case AV_CODEC_ID_OPUS:
- av_strlcatf(buff, size, "a=rtpmap:%d opus/48000\r\n",
+ /* The opus RTP draft says that all opus streams MUST be declared
+ as stereo, to avoid negotiation failures. The actual number of
+ channels can change on a packet-by-packet basis. The number of
+ channels a receiver prefers to receive or a sender plans to send
+ can be declared via fmtp parameters (both default to mono), but
+ receivers MUST be able to receive and process stereo packets. */
+ av_strlcatf(buff, size, "a=rtpmap:%d opus/48000/2\r\n",
payload_type);
+ if (c->channels == 2) {
+ av_strlcatf(buff, size, "a=fmtp:%d sprop-stereo:1\r\n",
+ payload_type);
+ }
break;
default:
/* Nothing special to do here... */
repositories / deb_ffmpeg.git / blobdiff