static void vaapi_encode_h264_write_sei(PutBitContext *pbc, VAAPIEncodeContext *ctx, VAAPIEncodePicture *pic) { VAAPIEncodeH264Context *priv = ctx->priv_data; PutBitContext payload_bits; char payload[256]; int payload_type, payload_size, i; void (*write_payload)(PutBitContext *pbc, VAAPIEncodeContext *ctx, VAAPIEncodePicture *pic) = NULL; vaapi_encode_h264_write_nal_header(pbc, NAL_SEI, 0); for (payload_type = 0; payload_type < 64; payload_type++) { switch (payload_type) { case SEI_TYPE_BUFFERING_PERIOD: if (!priv->send_timing_sei || pic->type != PICTURE_TYPE_IDR) continue; write_payload = &vaapi_encode_h264_write_buffering_period; break; case SEI_TYPE_PIC_TIMING: if (!priv->send_timing_sei) continue; write_payload = &vaapi_encode_h264_write_pic_timing; break; case SEI_TYPE_USER_DATA_UNREGISTERED: if (pic->encode_order != 0) continue; write_payload = &vaapi_encode_h264_write_identifier; break; default: continue; } init_put_bits(&payload_bits, payload, sizeof(payload)); write_payload(&payload_bits, ctx, pic); if (put_bits_count(&payload_bits) & 7) { write_u(&payload_bits, 1, 1, bit_equal_to_one); while (put_bits_count(&payload_bits) & 7) write_u(&payload_bits, 1, 0, bit_equal_to_zero); } payload_size = put_bits_count(&payload_bits) / 8; flush_put_bits(&payload_bits); u(8, payload_type, last_payload_type_byte); u(8, payload_size, last_payload_size_byte); for (i = 0; i < payload_size; i++) u(8, payload[i] & 0xff, sei_payload); } vaapi_encode_h264_write_trailing_rbsp(pbc); }