int write_avcc(avcc_t* avcc, h264_stream_t* h, bs_t* b)
{
bs_write_u8(b, 1); // configurationVersion = 1;
bs_write_u8(b, avcc->AVCProfileIndication);
bs_write_u8(b, avcc->profile_compatibility);
bs_write_u8(b, avcc->AVCLevelIndication);
bs_write_u(b, 6, 0x3F); // reserved = '111111'b;
bs_write_u(b, 2, avcc->lengthSizeMinusOne);
bs_write_u(b, 3, 0x07); // reserved = '111'b;
bs_write_u(b, 5, avcc->numOfSequenceParameterSets);
int i;
for (i = 0; i < avcc->numOfSequenceParameterSets; i++)
{
int max_len = 1024; // FIXME
uint8_t* buf = (uint8_t*)malloc(max_len);
h->nal->nal_ref_idc = 3; // NAL_REF_IDC_PRIORITY_HIGHEST;
h->nal->nal_unit_type = NAL_UNIT_TYPE_SPS;
h->sps = avcc->sps_table[i];
int len = write_nal_unit(h, buf, max_len);
if (len < 0) { free(buf); continue; } // TODO report errors
int sequenceParameterSetLength = len;
bs_write_u(b, 16, sequenceParameterSetLength);
bs_write_bytes(b, buf, len);
free(buf);
}
bs_write_u(b, 8, avcc->numOfPictureParameterSets);
for (i = 0; i < avcc->numOfPictureParameterSets; i++)
{
int max_len = 1024; // FIXME
uint8_t* buf = (uint8_t*)malloc(max_len);
h->nal->nal_ref_idc = 3; // NAL_REF_IDC_PRIORITY_HIGHEST;
h->nal->nal_unit_type = NAL_UNIT_TYPE_PPS;
h->pps = avcc->pps_table[i];
int len = write_nal_unit(h, buf, max_len);
if (len < 0) { free(buf); continue; } // TODO report errors
int pictureParameterSetLength = len;
bs_write_u(b, 16, pictureParameterSetLength);
bs_write_bytes(b, buf, len);
free(buf);
}
if (bs_overrun(b)) { return -1; }
return bs_pos(b);
}
int main()
{
h264_stream_t* h = h264_new();
int bufsiz = fread(filebuf, 1, sizeof(filebuf), stdin);
uint8_t* e;
uint8_t* p = filebuf;
uint8_t* end = filebuf + bufsiz;
for (int pp[2]; find_nal_unit(p, end-p, pp, pp+1) > 0; p = e) {
e = p + pp[1];
p += pp[0];
if (FILE* fp = fopen("sps.0","w")) {
fwrite(p, 1, e-p, fp);
fclose(fp);
}
read_nal_unit(h, p, e-p);
debug_nal(h, h->nal);
printf("\n");
//h->sps->profile_idc = 0x42;
//h->sps->level_idc = 0x33;
//h->sps->log2_max_frame_num_minus4 = 0x05;
//h->sps->log2_max_pic_order_cnt_lsb_minus4 = 0x06;
//h->sps->num_ref_frames = 0x01;
//h->sps->profile_idc = 66;
//h->sps->level_idc = 10;
h->sps->num_ref_frames = 0;
//h->sps->log2_max_frame_num_minus4 = 0x05;
//h->sps->log2_max_pic_order_cnt_lsb_minus4 = 0x06;
//h->sps->direct_8x8_inference_flag = 0;
#if 1
h->sps->vui_parameters_present_flag = 1;
h->sps->vui.bitstream_restriction_flag = 1;
//h->sps->vui.motion_vectors_over_pic_boundaries_flag = 1;
//h->sps->vui.log2_max_mv_length_horizontal = 10;
//h->sps->vui.log2_max_mv_length_vertical = 10;
h->sps->vui.num_reorder_frames = 1;
h->sps->vui.max_dec_frame_buffering = 2;
#endif
debug_nal(h, h->nal);
uint8_t out[1024];
int outlen = write_nal_unit(h, out, sizeof(out));
if (FILE* fp = fopen("sps.1","w")) {
fwrite(out+1, outlen-1, 1, fp);
fclose(fp);
}
if (h->nal->nal_unit_type == NAL_UNIT_TYPE_SPS)
break;
p = e;
}
}
static void ProcessSpsNalu(unsigned char* data, int length) {
const char naluHeader[] = {0x00, 0x00, 0x00, 0x01};
h264_stream_t* stream = h264_new();
// Read the old NALU
read_nal_unit(stream, &data[sizeof(naluHeader)], length-sizeof(naluHeader));
// Fixup the SPS to what OS X needs to use hardware acceleration
stream->sps->num_ref_frames = 1;
stream->sps->vui.max_dec_frame_buffering = 1;
// Copy the NALU prefix over from the original SPS
memcpy(s_LastSps, naluHeader, sizeof(naluHeader));
// Copy the modified NALU data
s_LastSpsLength = sizeof(naluHeader) + write_nal_unit(stream,
&s_LastSps[sizeof(naluHeader)],
sizeof(s_LastSps)-sizeof(naluHeader));
h264_free(stream);
}
PLENTRY gs_sps_fix(PLENTRY *head, int flags) {
PLENTRY entry = *head;
const char naluHeader[] = {0x00, 0x00, 0x00, 0x01};
if (replay_sps == 1) {
PLENTRY replay_entry = (PLENTRY) malloc(sizeof(*replay_entry) + 128);
if (replay_entry == NULL)
return NULL;
replay_entry->data = (char *) (entry + 1);
memcpy(replay_entry->data, naluHeader, sizeof(naluHeader));
h264_stream->sps->profile_idc = H264_PROFILE_HIGH;
replay_entry->length = write_nal_unit(h264_stream, replay_entry->data+4, 124) + 4;
replay_entry->next = entry;
entry = replay_entry;
replay_sps = 2;
} else if ((entry->data[4] & 0x1F) == NAL_UNIT_TYPE_SPS) {
read_nal_unit(h264_stream, entry->data+4, entry->length-4);
// Some decoders rely on H264 level to decide how many buffers are needed
// Since we only need one frame buffered, we'll set level as low as we can
// for known resolution combinations. Otherwise leave the profile alone (currently 5.0)
if (initial_width == 1280 && initial_height == 720)
h264_stream->sps->level_idc = 32; // Max 5 buffered frames at 1280x720x60
else if (initial_width = 1920 && initial_height == 1080)
h264_stream->sps->level_idc = 42; // Max 4 buffered frames at 1920x1080x60
// Some decoders requires a reference frame count of 1 to decode successfully.
h264_stream->sps->num_ref_frames = 1;
// GFE 2.5.11 changed the SPS to add additional extensions
// Some devices don't like these so we remove them here.
h264_stream->sps->vui.video_signal_type_present_flag = 0;
h264_stream->sps->vui.chroma_loc_info_present_flag = 0;
if ((flags & GS_SPS_BITSTREAM_FIXUP) == GS_SPS_BITSTREAM_FIXUP) {
// The SPS that comes in the current H264 bytestream doesn't set the bitstream_restriction_flag
// or the max_dec_frame_buffering which increases decoding latency on some devices
// log2_max_mv_length_horizontal and log2_max_mv_length_vertical are set to more
// conservite values by GFE 25.11. We'll let those values stand.
if (!h264_stream->sps->vui.bitstream_restriction_flag) {
h264_stream->sps->vui.bitstream_restriction_flag = 1;
h264_stream->sps->vui.motion_vectors_over_pic_boundaries_flag = 1;
h264_stream->sps->vui.max_bits_per_mb_denom = 1;
h264_stream->sps->vui.log2_max_mv_length_horizontal = 16;
h264_stream->sps->vui.log2_max_mv_length_vertical = 16;
h264_stream->sps->vui.num_reorder_frames = 0;
}
// Some devices throw errors if max_dec_frame_buffering < num_ref_frames
h264_stream->sps->vui.max_dec_frame_buffering = 1;
// These values are the default for the fields, but they are more aggressive
// than what GFE sends in 2.5.11, but it doesn't seem to cause picture problems.
h264_stream->sps->vui.max_bytes_per_pic_denom = 2;
h264_stream->sps->vui.max_bits_per_mb_denom = 1;
} else // Devices that didn't/couldn't get bitstream restrictions before GFE 2.5.11 will continue to not receive them now
h264_stream->sps->vui.bitstream_restriction_flag = 0;
if ((flags & GS_SPS_BASELINE_HACK) == GS_SPS_BASELINE_HACK && !replay_sps)
h264_stream->sps->profile_idc = H264_PROFILE_BASELINE;
PLENTRY sps_entry = (PLENTRY) malloc(sizeof(*sps_entry) + 128);
if (sps_entry == NULL)
return NULL;
PLENTRY next = entry->next;
free(entry);
sps_entry->data = (char*) (sps_entry + 1);
memcpy(sps_entry->data, naluHeader, sizeof(naluHeader));
sps_entry->length = write_nal_unit(h264_stream, sps_entry->data+4, 124) + 4;
sps_entry->next = next;
entry = sps_entry;
} else if ((entry->data[4] & 0x1F) == NAL_UNIT_TYPE_PPS) {
if ((flags & GS_SPS_BASELINE_HACK) == GS_SPS_BASELINE_HACK && !replay_sps)
replay_sps = 1;
}
*head = entry;
return entry;
}
